Blog

As a pioneer in the field of industrial temperature control, Hengde has always been committed to developing and providing advanced temperature control solutions. In the field of composite mold die casting, which is full of challenges and opportunities, Hengde has provided key mold temperature controller products to many companies with its outstanding technical strength and rich industry experience, helping companies improve production efficiency and product quality.   The head of a well-known aerospace parts production company that has cooperated with us for many years gave feedback: "Before using Hengde composite material compression molding temperature controller, we often had quality problems such as bubbles and uneven strength in the products during filament winding and compression molding processes due to unstable temperature control, and the scrap rate remained high. Since the introduction of Hengde temperature controller, these problems have been solved. Its temperature control accuracy is extremely high, and it can be accurately regulated according to the temperature curve we set, which greatly improves the quality stability of the product. Moreover, its efficient heating and cooling system has shortened our production cycle by nearly 30% and significantly reduced production costs. Hengde temperature controller is really a powerful assistant for us to improve production efficiency!"   The following are common and key application scenarios of mold temperature controllers in composite material molding processes: 1. Filament winding: In the filament winding molding process, the fiber is first fully impregnated with resin through the resin glue tank, and then wound on the continuously rotating core mold according to a carefully designed rule. After winding, the glue needs to be heated to solidify and mold. In this process, Hengde mold temperature controller can accurately control the heating temperature to ensure that the glue is uniformly cured under suitable temperature conditions, thereby improving the strength and stability of the winding products and meeting the stringent requirements of high-end fields such as aerospace for material performance.   2. Pultrusion: For the pultrusion process, the carbon fiber roving or its fabric is pulled by external force and goes through the steps of dipping, extrusion molding, heating and curing, and fixed-length cutting in sequence. Hengde composite material mold temperature controller plays a key role in the heating mold link. Through precise temperature control, it can significantly speed up the curing time, greatly improve production efficiency while ensuring product quality, and meet the needs of large-scale production in industries such as automobile manufacturing.   3. Resin transfer molding (RTM): In the resin transfer molding process, the reinforcement material is first made into a preform and placed in a closed mold, and then the resin is injected into the mold under the dual action of vacuum and pressure to cure it. Hengde mold temperature controller effectively speeds up the curing speed by accurately heating the mold, greatly improving production efficiency, and has been widely used in fields such as electronic equipment component manufacturing.   4. Compression molding: Compression molding is a process in which the molding material is placed in a metal mold and solidified under specific pressure and temperature conditions. In many compression molding processes, such as short fiber compression molding, felt compression molding, rag compression molding, lamination compression molding, winding compression molding, fabric compression molding, directional laying compression molding, preformed embryo compression molding, sheet molding compound compression molding (SMC compression molding), etc., Hengde mold temperature controller plays an indispensable role. It can accurately adjust the mold temperature according to different process requirements to ensure that the quality of the molded products is stable and meets high standards.     Through its wide application in these key molding processes, Hengde composite compression mold temperature controller plays a vital role in aerospace, automobile, electronics and other fields with extremely high material performance requirements. It not only helps companies manufacture high-quality composite products, but also promotes the technological progress and development of the entire industry. Hengde will continue to uphold the spirit of innovation, continuously optimize product performance, provide better temperature control solutions for more industries, and work with customers to create a brilliant future.   Choose Hengde，Choose Perfect Mold Temperature Controller！

Chillers achieve cooling primarily through the refrigeration cycle, where four key components—compressor, condenser, expansion valve, and evaporator—work in close coordination. Below is a detailed explanation of how chillers create an effective cooling process:   1.Compressor Pressurization The compressor, as the heart of the chiller, plays a crucial role in converting low-temperature, low-pressure refrigerant gas into high-temperature, high-pressure gas. During the compression process, the temperature and pressure of the refrigerant gas both rise. This change in state sets the stage for the subsequent condensation process, as refrigerant gas at higher pressures is more effective at transferring heat to the cooling medium, leading to a phase change.   2.Condenser Heat Exchange Once the high-temperature, high-pressure refrigerant gas enters the condenser, it undergoes heat exchange with the surrounding environment. In air cooled chillers, a fan drives air through the condenser to carry away heat, while water-cooled chillers utilize circulating water to absorb heat. During this process, the refrigerant gas cools down and condenses into a high-pressure liquid. Condensers are typically equipped with high-efficiency heat dissipation devices, such as variable-speed fans or enhanced heat exchange tubes, to improve heat transfer efficiency and speed up the refrigerant condensation process.   3.Expansion Valve Throttling and Pressure Drop When the high-pressure liquid passes through the expansion valve, there is a significant drop in both pressure and temperature. The primary function of the expansion valve is to regulate the flow of refrigerant, ensuring that it can fully evaporate in the evaporator, thereby achieving an effective cooling effect. This flow control is critical for maintaining the stable operation of the refrigeration system and optimizing its cooling efficiency.   4.Evaporator Heat Absorption The low-pressure, low-temperature refrigerant liquid enters the evaporator, where it quickly absorbs heat from the surrounding environment. In practical applications, chillers primarily absorb heat from cooling water, causing the refrigerant to vaporize into a low-temperature, low-pressure gas. During this process, the water inside the evaporator is cooled and then pumped to the equipment or systems that need cooling, transferring the heat and meeting the cooling demands of the system.   Through the continuous cycle of these four steps, chillers can reliably supply low-temperature cooling water to equipment or systems, ensuring stable operation under optimal temperature conditions. Compressor: Increases refrigerant pressure and temperature. Condenser: Dissipates heat, causing refrigerant to liquefy. Expansion Valve: Reduces refrigerant pressure. Evaporator: Absorbs heat, achieving cooling.   In summary, industrial chillers rely on the seamless cooperation of the compressor, condenser, expansion valve, and evaporator, as well as the continuous flow of refrigerant through these components, to achieve cooling. This process ensures the circulation of cooled water for various industrial applications and research experiments, providing reliable cooling support.    Hengde, with years of expertise in the chiller industry, is committed to continually optimizing product performance. Our chillers not only offer high cooling efficiency but are also equipped with intelligent control systems that precisely adjust cooling capacity to meet the diverse needs of different industries. With exceptional quality and comprehensive after-sales service, Hengde has built a strong reputation in the market, making it a trusted choice for companies seeking reliable refrigeration equipment.   Choose Hengde-Choose Perfect Chillers!

Hengde Company, a renowned name in the industrial temperature control realm, has been committed to providing high quality mold temperature controllers for years. Our products are widely applied across various industries, characterized by their reliability, precision, and advanced technology. With a professional R & D team and excellent after - sales service, we ensure that every customer can make the most of our mold temperature controllers. Now, let's explore the professional debugging process of our mold temperature controllers.   Debugging Steps of the Oil Type Mold Temperature Controller 1. Preparation Before commencing the debugging, ensure the availability of a stable power supply and high quality thermal oil.    2. Power Connection Push the air switch and then turn on the power button. In case the air switch fails to be pushed up, check if the emergency stop button on the controller panel is pressed. If so, rotate the emergency stop button to its normal position. After turning on the power button, if the oil type mold temperature controller alarms, it is likely due to a phase - reversal issue. Immediately turn off the power supply and swap any two of the three incoming power lines. Once the phase - reversal problem is resolved, the controller can start normally.   3. Oil Filling After starting the machine, the oil mold temperature machine will trigger an oil shortage alarm. Gradually add thermal oil, until the entire pipeline is filled with oil and the oil shortage alarm in the oil tank ceases. Be cautious not to over fill the oil tank. As the oil heats up, the tank will release gas. Excessive oil may cause the gas to force the oil out of the tank. After oil filling, carefully inspect all pipelines of the oil mold temperature machine for any oil leaks. Once the pressure shown on the pressure gauge of the oil temperature machine stabilizes, the heating process can be initiated.   4. Heating Set the temperature on the controller for heating. Initially, set the temperature to 90℃ and closely monitor the stability of the pressure gauge. If the pressure gauge remains stable, it is safe to directly set the temperature to the required operating temperature.     Precautions Prior to starting the machine, always double - check whether the emergency stop button on the oil mold temperature controller panel is in the released state. A pressed emergency stop button will prevent the air switch from being closed. During the heating process, if there is a significant difference between the oil outlet temperature and the oil return temperature, with the oil outlet temperature rising rapidly, it is highly likely that the filter is blocked. Before further heating, remove and clean the filter to ensure normal oil circulation. If the oil mold temperature controller alarms for oil - shortage or lack of media, it may be caused by poor contact of the liquid level sensor (the cylindrical tube adjacent to the oil tank). Usually, a slight adjustment of the sensor can solve this problem. If the liquid level alarm function is not required, simply unplug the wire above the sensor.   After the debugging process is completed, it is crucial to record all the debugging parameters and the operating status of the mold temperature controller accurately. Compile these records into a detailed debugging report. Once the oil mold temperature controller is put into formal operation, regular maintenance and inspections should be carried out at fixed intervals. This ensures that the controller always operates in an optimal condition, providing reliable temperature control for your production processes.   At Hengde Company, we not only offer top - tier mold temperature controllers but also comprehensive support throughout the product lifecycle. Our professional team is always ready to assist you, ensuring that your investment in our products brings long - term benefits and efficient production.   Choose Hengde,Choose Perfect Mold Temperature Controller！

Industrial chillers are commonly used in modern industrial production to cool machinery and equipment through a circulating cooling water system. Whether an air-cooled industrial chiller can be placed outdoors requires consideration of various factors.   Theoretical and Design Considerations From a theoretical and design standpoint, air-cooled industrial chillers, which use air as the heat exchange medium, can be placed outdoors. Unlike water-cooled chillers, air-cooled chillers' biggest advantage is that they do not require an additional cooling water source, making them ideal for areas where water resources are limited. Air-cooled chillers work by using fans to drive air through the condenser, facilitating the heat exchange between the refrigerant and the outside air. As long as the airflow conditions are good, placing the chiller outdoors can meet its basic cooling needs. For instance, in spacious factory yards, an air-cooled industrial chiller can be placed outdoors, free from obstructions, allowing it to fully interact with the outside air and efficiently dissipate heat.   Challenges of Outdoor Placement However, placing the chiller outdoors comes with several challenges: Environmental Temperature Impact: In extremely high temperatures, the outside temperature may become too high, reducing the temperature difference for heat dissipation, which in turn lowers the cooling efficiency and affects the refrigeration performance. For example, during summer heatwaves, when the outdoor temperature reaches 38°C or higher, the chiller's cooling capacity may significantly decrease. Severe Weather Conditions: Weather events like heavy rain, dust storms, and heavy snow can damage the chiller's electrical components and outer casing. Rainwater could enter the electrical system and cause short circuits, dust may block the condenser fins and reduce heat exchange efficiency, and snow accumulation could damage the chiller's casing. Space and Security Issues: Installing the chiller outdoors requires ample space and additional security measures to prevent theft or vandalism. Noise Considerations: Air-cooled chillers, due to their built-in fans, produce noise during operation. If placed near residential or office areas, especially outdoors, the noise could cause disturbance to nearby residents or employees, impacting their work or quality of life.   Protection Measures for Outdoor Installation If a company decides to place an air-cooled industrial chiller outdoors, several protection measures are necessary. For instance: * Building a Protective Shelter: This shelter can shield the chiller from rain, dust, and direct sunlight while ensuring good airflow. * Installing Wind Shields: To prevent damage from strong winds, protective covers should be installed. * Regular Maintenance and Inspection: After harsh weather events, it’s essential to clean the chiller’s surface, check for debris, and inspect electrical connections to ensure everything is in working order.   Hengde's Air-Cooled Industrial Chillers for Outdoor Use Hengde’s air-cooled industrial chillers are specifically designed with outdoor use in mind. The chiller's casings are made from high-strength, corrosion-resistant materials that can withstand certain levels of harsh weather. Additionally, Hengde provides professional guidance on outdoor installation and protection solutions, ensuring that the equipment runs reliably in outdoor environments.   If you want to learn more about Hengde’s air-cooled industrial chillers or have any questions, feel free to contact us anytime at www.hengdechiller.com.   Choose Hengde, Choose Perfect Chillers!

As a high-efficiency plastic processing equipment, extruders hold a vital position in industrial production due to their continuous production capabilities. This versatile machine can meet the molding needs of various materials, making it widely used in industries such as packaging films, construction pipes, automotive seals and parts, and cable sheaths. By accurately controlling temperature and pressure, extruders can flexibly produce diverse products, ranging from micron-level films to complex structural components. This not only ensures high-quality output but significantly enhances production efficiency. With the development of new materials and technologies, the application scope of extruders continues to expand.   Common Applications of Extruder Mold Temperature Controllers in the Extrusion Industry： 1. Plastic Extrusion Field * Pipe Extrusion: In the production of plastic pipes, mold temperature controllers regulate the temperature of the molds, ensuring that the molten plastic flows evenly and cools properly. This results in pipes with uniform wall thickness, stable dimensions, and smooth surfaces. The reduced ovality and wall thickness deviations improve the pipe's pressure resistance and aesthetic quality, making it suitable for applications in construction water supply and drainage, gas transmission, and electrical cable conduits.   * Profile Extrusion: In the production of plastic profiles for doors, windows, and decorative materials, mold temperature controllers ensure that the molds maintain an appropriate temperature. This allows the plastic to fill the mold cavities more effectively, achieving precise shapes and dimensions. The temperature control also enhances the profile's surface quality and physical properties, such as rigidity and flexibility.   * Sheet Extrusion: For plastic sheet extrusion, precise mold temperature control ensures even distribution of internal stress in the sheet, preventing warping or deformation. It also guarantees the flatness and smoothness of the sheet's surface. High-quality plastic sheets are produced for industries such as construction, furniture manufacturing, and advertising displays.   *  Film Extrusion: In plastic film production, mold temperature controllers help regulate cooling rates and crystallinity. This results in films with excellent transparency, tensile strength, and flexibility, as well as uniform thickness. The controlled temperature improves film quality, making it ideal for use in packaging, agriculture, and electronics industries.   2. Rubber Extrusion Field * Rubber Hose Extrusion: During the production of rubber hoses, mold temperature controllers create a suitable environment that ensures the rubber has excellent flowability and plasticity during extrusion. This results in hoses with precise dimensions and smooth surfaces, enhancing performance in terms of pressure resistance, abrasion resistance, and aging resistance. These hoses are widely used in industries such as automotive, machinery, and chemical engineering for oil, water, and gas transmission.   * Rubber Strip Extrusion: In the extrusion of rubber sealing strips, mold temperature controllers ensure stable extrusion processes, maintaining consistent cross-sectional shapes and stable dimensions. This improves the sealing performance and elasticity of rubber strips, which are crucial for automotive door seals and window seals in construction.   * Rubber Sole Extrusion: For rubber sole extrusion, mold temperature controllers ensure that rubber materials are extruded at optimal temperatures, achieving excellent forming effects and physical properties such as elasticity, abrasion resistance, and slip resistance. This leads to higher quality and comfort in rubber footwear soles.   A rubber products manufacturer that previously used a natural gas boiler for heating faced significant energy waste during equipment downtime. The primary production equipment was a flat vulcanizing machine with heating plates measuring 1.2 meters by 1 meter by 40 millimeters, with six plates in total. The process required that the temperature of each heating plate be precisely controlled at 160°C.   For this production demand, the company selected a rubber extruder mold temperature controller with the following technical specifications: heating power of 60KW, circulating flow rate of 16m³/h, and lift of 30 meters. After more than a year of practical operation, the temperature controller system proved stable and reliable, meeting the demand for continuous production, with each heating plate's temperature achieving the required precision.   With the implementation of mold temperature controller system, the company not only solved the energy waste issue during equipment downtime but also significantly improved product quality and reduced defective rates. This demonstrates the importance  of selecting compatible mold temperature control equipment in improving production efficiency and product quality in rubber manufacturing.   3. Cable Extrusion Field In cable production, extruder mold temperature controllers regulate the extrusion temperatures of cable insulation and sheath materials. By precisely controlling temperature, these systems ensure that insulation and sheath materials exhibit good flowability and uniformity during extrusion, guaranteeing consistent thickness and smooth surfaces. This improves both the electrical and mechanical properties of the cable, ensuring high quality and safety. These systems are widely applied in the production of power cables, communication cables, and various other types of cables.   4. Other Extrusion Applications * Food Industry: In the extrusion of food packaging films and food processing pipes, mold temperature controllers maintain the temperature within an ideal range. This ensures the safety and stability of food-contact materials, while also stabilizing product dimensions and surface smoothness, meeting food hygiene standards.   * Composite Material Extrusion: When producing fiber-reinforced composite materials, mold temperature controllers help regulate mold temperatures, allowing better integration of resin matrices with reinforcing materials. This improves the performance and quality of composite materials, ensuring that products meet mechanical and thermal requirements.   Nanjing Hengde Electrical Equipment Co., Ltd, a professional manufacturer specializing in mold temperature controllers, produces over 200 models tailored to different industries, including those for the extrusion sector. Hengde offers one-on-one customer service, available 24/7, to meet all your production needs. Hengde's efficient and durable mold temperature controllers can save your company significant maintenance and replacement costs, improving both production efficiency and product quality.   Choose Hengde，Choose Perfect Mold Temperature Controller！

Hengde Company, a leading enterprise in the industry, is dedicated to the research, development, and manufacturing of industrial temperature control equipment. Its mould temperature controller machines, with excellent performance and stable quality, play a crucial role in the plastic processing field.    Mould temperature controller machines have a wide range of applications in the plastic processing industry, such as injection molding, extrusion molding, blow molding and calendering.   * Injection Molding Injection molding, a process in which plastic materials are heated to a molten state and then injected into a mold, and formed into plastic products after cooling and solidification, has extremely high requirements for mold temperature control. Hengde's mould temperature controller machine can accurately control the melting state and fluidity of plastic materials by heating or cooling the mold precisely, ensuring that the plastic materials can fully fill the mold cavity. As a result, the plastic products have excellent quality and precise dimensional accuracy. At the same time, this mould temperature controller machine can significantly accelerate the cooling rate of products, effectively shorten the production cycle, and greatly improve production efficiency.   * Extrusion Molding In the extrusion molding process, the precise control of the mold temperature by Hengde's mould temperature controller machine ensures that the plastic materials have specific hardness, toughness, and appropriate tensile and bending properties during the molding process. This plays a decisive role in manufacturing plastic products with specific physical properties.   * Blow Molding During the blow molding process, Hengde's mould temperature controller machine can accurately control the mold temperature, enabling the plastic products to maintain a stable shape and size during the molding process. This is particularly crucial for the production of plastic products with complex shapes and sizes.   * Calendering During the calendering process, Hengde's mould temperature controller machine ensures that the plastic materials have appropriate fluidity and formability during the processing by accurately regulating the mold temperature, thereby obtaining high quality calendered products.   In summary, the application of Hengde Company's mould temperature controller machines in the plastic processing industry mainly involves precisely controlling the mold temperature to ensure that the plastic materials have suitable fluidity and formability during the molding process, so as to produce high quality and high precision plastic products. In addition, Hengde's mould temperature controller machines can significantly improve production efficiency, shorten the production cycle, and reduce production costs. They have already become an indispensable core equipment in the plastic processing industry, providing a solid guarantee for the efficient development of the industry.   Choose Hengde，Choose Perfect Mold Temperature Controller!

As a leading supplier of industrial temperature control solutions, Hengde Company has always been committed to providing high - quality and high performance temperature control equipment for various industries. Among many temperature control devices, the mold temperature controller is one of our core products, which is widely used in multiple fields such as plastics, rubber, and die - casting, helping numerous enterprises to improve production efficiency and product quality. Today, let's delve into how to select a suitable mold temperature controller.   In the plastics industry, the mold temperature controller is an indispensable device, playing a crucial role in optimizing the production process and ensuring product quality. Currently, the most commonly used mold temperature controllers in the plastics industry are mainly divided into two types: water type mold temperature controllers and oil type mold temperature controllers.   Water type Mold Temperature Controllers Water type mold temperature controllers use water as the heat medium and usually operate based on the principle of direct heating and cooling. Their common temperature ranges are three types: below 100°C (212°F), 120°C (248°F), and 180°C (356°F). Water, as a heat medium, has advantages such as low cost and no pollution, and is widely used in some production scenarios where the temperature requirements are not particularly high.   Oil type Mold Temperature Controllers Oil type mold temperature controllers use professional industrial oil that is not easily decomposed by high temperatures as the heat medium and work based on the principle of direct heating and indirect cooling. The commonly used temperature ranges by manufacturers are generally below 180°C (356°F), 200°C (392°F), and 300°C (572°F). Oil - type mold temperature controllers can reach higher temperatures and are suitable for production processes with high temperature requirements.   Application Advantages of Mold Temperature Controllers Accelerate the production process: By precisely controlling the mold temperature, the product molding cycle can be shortened, the production progress can be accelerated, thereby reducing production costs and minimizing the loss of production materials. Improve product quality: Effectively reduce the proportion of unqualified products, strictly control product quality, and ensure that products meet high - quality standards. Precise temperature control: The temperature can be controlled within the set range, so that the appearance quality of products can be strictly controlled, enhancing the aesthetics and market competitiveness of products. Increase production efficiency: Increase the molding time of neutral products, significantly improve production efficiency, and create more economic benefits for enterprises.   Selection Suggestions Water quality consideration: If the pH value and iron content in the water of the manufacturer's location are too high, or the water is not clean with too many impurities, it is not recommended to use a water - type mold temperature controller. Instead, an oil - type mold temperature controller should be selected to avoid equipment failures due to water quality problems. Product characteristics: If the products produced by the manufacturer are transparent or optical mirror products, since oil mist may affect the gloss of the products, it is not recommended to use an oil - type mold temperature controller. A water - type mold temperature controller is more suitable.   Important Technical Parameters to Pay Attention to When Purchasing Temperature control range: Refers to the maximum temperature control range that the mold temperature controller can achieve, and it needs to be selected according to the temperature requirements of the production process. Temperature control accuracy: That is, the temperature deviation of the mold temperature controller during stable operation. The higher the accuracy, the more beneficial it is to the control of product quality. Power supply and power data: Include the total power of the mold temperature controller, the power of the main components, the supply voltage, and frequency. These data are related to whether the equipment can operate normally under the existing power conditions of the enterprise. Heat transfer medium: Currently, the commonly used ones are heat - conducting oil and water, and it needs to be determined according to actual production needs and the above - mentioned selection suggestions. Cooling method: Oil - type temperature controllers use indirect cooling, and the commonly used cooling methods for water - type temperature controllers are direct cooling and indirect cooling. Different cooling methods are suitable for different production scenarios. Heating power: That is, the maximum heating power of the mold temperature machine, which determines the heating speed of the equipment. Circulating pump power: Involves the power specifications, size, and parameters of  the pump, affecting the circulation efficiency of the heat medium. Flow rate and pressure: It is necessary to ensure that the heat medium has sufficient flow rate and pressure to meet the heat exchange requirements and ensure the temperature control effect. Interface size/model: Include the inlet and outlet pipe diameters of the heat medium and the cooling water pipe diameter, etc. These sizes should match the existing pipeline system of the enterprise.   With years of R & D and production experience in the field of mold temperature controllers, Hengde Company can provide you with all - round selection guidance and high quality products. Our mold temperature controllers have won the trust of numerous customers with their excellent performance, stable quality, and precise temperature control capabilities. If you have any questions during the process of choosing a mold temperature controller, please feel free to contact Hengde Company. We will wholeheartedly serve you and help make your production process more efficient and of higher quality.   Choose Hengde, Choose Perfect Mold Temperature Controller !

As a leading enterprise in the industry, Hengde Company relies on the Industrial chiller to play a crucial role in various industrial production processes. It can precisely control the temperature and ensure the stable operation of production equipment, which is a key link in ensuring production efficiency and product quality. However, during long - term use, the compressor of the industrial chiller may issue some fault alarms, which not only affect the normal operation of the equipment but may also lead to production stagnation. To help you solve problems quickly and effectively, the following details the common high pressure alarm and low pressure alarm faults of the Industrial chiller compressors of Hengde Company and the corresponding solutions.     High - Pressure Alarm of Industrial chiller Compressor 1. The condenser is dirty and blocked. Solution: Clean the condenser, keep the air temperature below 40°C / keep the cooling water below 35°C.   2. The high - pressure switch trips. Solution: Press the reset button of the high - pressure switch and restart the compressor.   3. Over - charging of refrigerant. Solution: Check whether the refrigerant charging amount is excessive.   4. Cooling water pump failure. Solution: Repair or replace the water pump.   Low - Pressure Alarm of Industrial chiller Compressor 1. Insufficient refrigerant or refrigerant system leakage. Solution: Check whether the system lacks refrigerant or whether there is leakage in the system pipelines.   2. Insufficient water flow or system shortage causes the evaporator to freeze. Solution: Check whether the water tank is short of water and whether the valve is fully opened. If the evaporator freezes, drain the water completely and then add warm water to melt it. Do not knock the ice with hard objects, as piercing the copper tube will damage the compressor!   3. Chilled water pump failure or pipeline blockage. Solution: Check the chilled water pump and pipeline system.   Hengde Company has always been committed to providing customers with high quality Industrial chiller equipment and complete after - sales services. When your Industrial chiller encounters the above - mentioned faults, you can quickly troubleshoot and repair it according to the corresponding solutions. If you encounter any difficulties during the operation, please feel free to contact the professional technical team of Hengde Company(www.hengdechiller.com). We will serve you wholeheartedly to ensure that your Industrial chiller equipment returns to normal operation as soon as possible and to guarantee the smooth progress of your production work.   Choose Hengde, Choose Perfect Chillers !

Selecting an appropriate roller mold temperature controller can be a daunting task for numerous users. An incorrect choice often leads to a host of issues, such as subpar temperature control, insufficient power, an ill - configured circulation pump, and a mismatched expansion tank. Today, we'll explore how to communicate effectively with suppliers of roller mold temperature controllers to ensure a precise and suitable selection.   1. Gain an In - Depth Understanding of the Roller Structure Before making a decision on a roller mold temperature controller, it's essential to have a clear comprehension of the roller structure. In the current market, the prevalent roller structures are hollow rollers and sandwich rollers. Irrespective of the type, when choosing a roller mold temperature controller, providing the supplier with accurate diameter and length data of the roller is crucial. These figures are instrumental in precisely calculating the volume of heat transfer oil required, which in turn helps determine the proper heating power. For instance, a roller with a larger diameter and greater length demands more heat transfer oil, thus necessitating a corresponding increase in heating power.     2. Thoroughly Consider the Height of the Composite Roller from the Ground The height of the composite roller from the ground is a significant factor in the selection of a roller mold temperature controller. When communicating with suppliers about the selection process, providing detailed information about this height enables the manufacturer to recommend either an oil temperature controller with an external oil tank or one with an internal oil tank, based on the actual situation. The difference between an internal and external oil tank setup should not be overlooked, as it directly impacts the convenience and comfort during subsequent usage. If the height from the ground is not suitable and the oil tank's position is ill - placed, it can pose numerous challenges during operation and maintenance.   3. Furnish Comprehensive Production Process Information A complete and accurate account of the production process is the linchpin in choosing the right roller mold temperature controller. For example, you need to clearly communicate to the manufacturer details such as the specific materials processed by the composite roller, the water content of those materials, and whether cooling is required during the production process. By providing this information in advance, the supplier can make customized selections tailored to your unique requirements, ensuring that the chosen roller mold temperature controller meets all production needs. For example, when processing materials with high water content, the roller mold temperature controller may need to have enhanced cooling capabilities.     In summary, when choosing a specialized roller mold temperature controller, it's necessary to calculate key parameters like heating power meticulously, based on actual production process requirements. Additionally, pay attention to details such as the compatibility of the pump flow rate and the appropriate size of the expansion tank. Information such as the roller's diameter, length, interface size, and the height of the rotary joint from the ground are all critical aspects to consider during the selection. Moreover, it's important to ascertain whether the roller is jacketed or hollow, its volume, or the diameter and length of the coil. Also, clarify how long it takes to heat the roller to a specific temperature, whether cooling is needed, and the specific heating temperature and time requirements. These are mainly determined by production capacity, that is, the weight of products produced per hour, along with the maximum temperature, the temperature to be maintained, and the product type. When determining the heating power according to roller specifications, the roller's weight is a primary consideration, and understanding the preheating time is essential. Since the roller is a fixed heating object, if possible, extending the preheating time can be beneficial. Additionally, the option of heating power group switching allows for flexible adjustment according to actual needs.   These are the key questions typically asked by roller mold temperature controller suppliers. By being aware of these technical parameters in advance, you can provide accurate information to the supplier in one go when sending an inquiry, avoiding the time - consuming process of repeated information confirmation during back - and - forth communication. We hope these tips will be of great assistance when you're in the market for a roller mold temperature controller.   Choose Hengde，Choose Perfect Mold Temperature Controller！

With the continuous advancement of technology, industrial chillers have found increasingly widespread applications in various industrial fields. They play a crucial role in ensuring the efficient operation of industrial production and enhancing product quality. However, as mechanical equipment, industrial chillers are inevitably prone to certain issues during long - term operation. One of the common problems is equipment corrosion. To effectively prevent the corrosion of industrial chillers and extend their service life, Hengde Company elaborates on the six major common causes of chiller corrosion and provides corresponding preventive measures.   1. Corrosion Issues Caused by Unreasonable Engineering Construction, Design, and Installation Some factories, especially when selling ordinary industrial chillers, cut corners to reduce costs and neglect essential anti - corrosion and anti - rust treatments. Once customers expose the chiller to the outdoor environment for an extended period, the equipment shell is highly susceptible to corrosion. This corrosion risk resulting from the neglect of anti - corrosion measures in the early construction and installation stages can severely affect the normal operation and service life of the chiller.   Preventive Measures: When purchasing equipment, choose suppliers with good reputations and quality guarantees to ensure that the chiller has undergone comprehensive anti - corrosion and anti - rust treatments before leaving the factory, such as spraying high - quality anti - corrosion paint and using corrosion - resistant materials for the shell. Before installation, assess the installation environment and avoid placing the equipment in humid, dusty, or corrosive gas environments. If outdoor installation is unavoidable, build a protective shed to shield the equipment.   2. System Pipeline Corrosion Caused by Incorrect Installation or Abnormal Operation of the Water Processor In water cooled chillers, the cooling water pipeline is a key passage for cooling water circulation. The quality of the water directly determines whether scale and rust will form in the system pipelines. If the water processor is installed improperly or operates abnormally, it cannot effectively treat the water quality, thereby triggering pipeline rust. This not only reduces the heat exchange efficiency of the chiller but may also lead to pipeline blockages, affecting the stable operation of the entire system.   Preventive Measures: Before installing the water processor, strictly follow the product manual for correct installation and conduct debugging after installation to ensure its normal operation. Regularly maintain and service the water processor, checking whether all its functions, such as filtration, sterilization, and descaling, are normal. Meanwhile, regularly test the cooling water quality and adjust the operating parameters of the water processor or replace consumables like filter elements in a timely manner according to the water quality conditions.   3. Insufficient Filtration of Fine Impurities by Y - type Filters Currently, the commonly used dirt removers in industrial chillers are mostly Y - type filters. They have the advantages of easy installation and convenient dirt cleaning and can conduct preliminary rough filtration of mechanical impurities, iron filings, and sand grains. However, their filtration effect on tiny impurities is unsatisfactory. As the unit operates for a long time, the condenser is extremely likely to accumulate dirt, sludge, and other impurities. These deposits not only reduce the heat transfer performance of the condenser but may also accelerate the equipment's corrosion process due to the formation of a local corrosion environment.   Preventive Measures: Based on the Y - type filter, add a precision filter to conduct more refined filtration of tiny impurities. Regularly clean and maintain the Y - type filter and the precision filter, and promptly remove the impurities inside the filters. At the same time, regularly clean the condenser. Chemical cleaning or physical cleaning methods can be used to remove the dirt and deposits inside the condenser and maintain its good heat transfer performance.   4. Absence of a Quick Drain Valve in the Chilled Water System The quick drain valve plays an important role in draining in the chiller or chilled water system. It has a simple structure, good sealing performance, small size, and light weight, and is especially suitable for regular draining of the system. It also has the advantages of corrosion resistance, impact resistance, and long service life. However, currently, many industrial chiller end plates in enterprises do not have a quick drain valve installed, which is likely to cause system pipeline corrosion. During the daily operation of the chiller, it is recommended to open and close the drain valve three times a week to ensure smooth system drainage and maintain the good operation of the system.   Preventive Measures: For chilled water systems that have not installed a quick drain valve, install a quick drain valve that meets the system requirements as soon as possible. In daily use, strictly follow the recommended operation frequency to open and close the drain valve to ensure that impurities and dirt in the system are discharged in a timely manner. At the same time, regularly check the sealing performance and working status of the drain valve and replace it promptly if it is damaged.   5. Absence of a Water Meter in the Cooling System Makeup Water Pipeline In the water quality treatment process of the cooling system, chemicals and bactericides are usually used to kill fungi, microorganisms, and remove various dirt inside the pipeline. The dosage of the chemicals needs to be accurately adjusted according to the makeup water volume and the system water volume. If there is no water meter installed in the cooling system makeup water pipeline, it is impossible to accurately measure the makeup water volume, resulting in inaccurate chemical dosing. Excessive dosing may cause chemical corrosion of the pipeline, while insufficient dosing cannot effectively inhibit the growth of microorganisms and the formation of dirt, also triggering system pipeline corrosion problems.   Preventive Measures: Install a water meter with appropriate accuracy in the cooling system makeup water pipeline to accurately measure the makeup water volume. According to the system water volume and makeup water volume, accurately calculate the dosage of the chemicals according to the chemical usage instructions. At the same time, regularly test the water quality of the cooling system and adjust the dosage and type of the chemicals in a timely manner according to the test results to ensure that the water quality is in a good state.   6. Corrosion of the Equipment Surface by Acidic and Alkaline Gases in the Environment During factory production, some special gases, such as acidic and alkaline gases, are inevitably generated. These gases flowing in the environment can cause erosion damage to the equipment surface. Therefore, when selecting a chiller in an environment with such special gases, it is necessary to explain the situation in detail to professionals in advance so that explosion - proof and corrosion - resistant materials are preferentially selected for the production of the electrical control box or evaporator pipeline. This can effectively prevent the equipment from being corroded and damaged by acidic and alkaline gases during the later operation.   Preventive Measures: During the equipment selection stage, fully consider the gas components and concentrations in the working environment and choose chillers with corresponding protection levels and corrosion - resistant properties. For installed equipment, gas purification devices can be set up around the equipment to reduce the concentration of acidic and alkaline gases in the environment. Regularly inspect and maintain the equipment surface. If there are signs of corrosion, promptly carry out repair and protection treatments, such as repainting anti - corrosion paint.     With the rapid development of industry and the continuous emergence of new materials and new processes, the application scenarios of industrial chillers are becoming increasingly diverse, which increases the risk of equipment corrosion. Here, Hengde earnestly reminds industry friends that for industrial chiller equipment, real - time maintenance and customized servicing remain the keys to reducing corrosion and extending the service life. Only through scientific and reasonable maintenance measures can industrial chillers operate continuously and stably in complex industrial environments and provide reliable support for industrial production. When you plan to buy an industrial chiller, Hengde Company is your reliable choice. We offer high - quality products and professional services to meet all your needs.   Choose Hengde, Choose Perfect Industrial Chiller!

Hengde Company is a well - established leader in the industrial temperature control industry. With years of experience and a focus on innovation, we offer top - notch mould temperature controllers that are trusted by industries worldwide. Our mould temperature controllers are designed to ensure efficient and reliable temperature control, backed by excellent customer service.   Preparation before starting the mould temperature controller: 1. Turn on the power after opening the valves of cooling water, circulating water, and hot water inlet and outlet.   2. Set the temperature control meter to 0℃ and press the start button.Press the start button, and the following situations may occur: 1) The pump reversal indicator light is on and the buzzer alarms; Processing: Turn off the power, swap any two phases of the external three-phase power line, and connect them back. 2) The pump overload indicator light is on and the buzzer alarms; Processing: Please press the reset button of the pump thermal relay and check whether the three-phase power is missing. 3) The lack of media indicator light is on and the buzzer alarms; Processing (water mould temperature machine): Check whether the water source switch is turned on, or the water supply pressure is insufficient. The water supply pressure of the water mould temperature machine is required to be 1.5KG. If the water pressure is not convenient to adjust, the low-pressure limit pressure of the low-pressure switch can be adjusted. Processing (oil mould temperature machine): Add thermal oil.   3. Set the thermostat to the required temperature.   Start-up process of mould temperature controller: * Water mould temperature controller: 1. Set the temperature to 0℃ first, circulate for 2 minutes, and then set it to the required temperature. 2. If it is not used for a long time, please turn off the main power, remove the connecting pipe, and drain the circulating water in this machine.   * Oil mould temperature controller: Warning: For the first installation or replacement of piping, after heating to the middle position of 1/3 of the liquid level tube, you need to wait for ten minutes before turning it on, otherwise the heating tube may be damaged. Please note! 1. Set the temperature to 0℃ first, circulate for 2 minutes, then set the temperature to 80℃, circulate for 5 minutes, and then set the temperature to 120℃ (if the pressure is unstable at 120℃, please reduce the temperature to 110℃, wait for the pressure to stabilize, and then increase it to 120℃), wait for the pressure gauge pressure to stabilize, and then set it to the required temperature. 2. If it is not used for a long time, please turn off the main switch, remove the connecting pipe and drain the circulating oil in this machine.   Mould temperature controller shutdown process: 1. When shutting down, it is best to lower the temperature of the water mould temperature controller to below 40℃ first, and the oil mould temperature controller is best to lower the temperature to below 80℃ before shutting down, which can extend the service life of the pump and heating tube. 2. If not used for a long time, please turn off the main switch, open all ball valves, and discharge the circulating oil/water in the system.   At Hengde Company, we are committed to providing not only high - quality products but also continuous support. Our technical team is always ready to assist you, ensuring your production processes run smoothly with our mould temperature controllers.   Choose Hengde，Choose Perfect Mould Temperature Controller！

Hengde Company, a well - known enterprise in the refrigeration equipment R & D and production industry, has been committed to providing efficient and stable industrial chiller products for various fields for many years. With advanced technology and strict quality control, Hengde chillers have a good reputation in the market and are widely used in many scenarios such as industrial production and scientific research experiments, providing reliable refrigeration support for customers' production and operation. However, to ensure the safe and efficient operation of the industrial chiller, correct operation and maintenance are of utmost importance. The following are the precautions and warnings for Hengde chillers.   I. Operating Precautions for Chillers 1. The chilled water pump of the chiller must not operate when there is no water in the water tank. 2. Try to avoid continuous switching of the operation switch. 3. When the chilled water temperature of the chiller reaches the set temperature, the compressor will automatically stop running. This is a normal phenomenon. 4. The temperature switch should be set above 5°C to prevent the evaporator from freezing (except for low - temperature units). 5.To ensure the best cooling effect and keep the chiller in optimal condition, regularly clean the condenser, evaporator, and water filter of the industrial chiller.   II. Electrical Precautions 1. Only after the unit is shut down and the power is turned off can the industrial chiller be cleaned. Otherwise, there may be a risk of electric shock or injury. 2. Do not directly rinse the chiller with water, and do not perform maintenance when the chiller is in operation. 3. Do not use steel wire or copper wire to replace the circuit breaker. Use the correct - specification fuse to avoid damaging the industrial chiller. 4. If a fault alarm occurs, immediately shut down the unit. Restart it only after the fault is eliminated, or promptly notify the maintenance personnel for handling. Continuing to use the chiller in this situation may cause electric shock or fire accidents. 5. Warranty work can only be carried out by professionals. Before removing the electrical wiring device, all power sources must be cut off.   III. Warnings 1. Never twist or pull the wires of the controller to avoid damaging the controller and causing malfunctions. 2. Never wipe the controller with benzene, thinners, or chemicals. Otherwise, it may cause discoloration or component malfunctions. To clean it, first soak a cloth in water containing a neutral detergent, wring out the water, wipe the controller, and then dry it with a dry cloth. 3. Never apply excessive force to the operation screen or connection parts to avoid color changes.   Hengde Company always pays attention to the customer - use experience. In addition to providing high - quality chiller products, we also have a professional after - sales team to provide customers with all - round technical support and maintenance guidance. If you have any questions or need help during the use of Hengde chillers, please feel free to contact us (www.hengdechiller.com). We will wholeheartedly serve you to ensure that your equipment is always in the best operating condition.   Choose Hengde, Choose Perfect Chillers!