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The water cooled screw chiller is a crucial piece of equipment in industries with strict cooling requirements, such as industrial production and commercial buildings. It combines advanced refrigeration technology with efficient heat exchange systems, offering a range of unique advantages. Hengde's water cooled screw chiller has become a benchmark for quality in the industry.   1. Efficient and Stable Compressor Performance Hengde’s water-cooled screw chiller uses imported semi-hermetic twin-screw compressors, which offer significant advantages over traditional reciprocating compressors. These screw compressors provide efficient compression, quickly and steadily compressing refrigerant gas to provide powerful cooling. During operation, the compressor runs quietly, significantly reducing noise pollution in the workplace. The simple operation minimizes technical requirements and workload for operators. Additionally, the internal structure is designed for minimal wear on moving parts, ensuring a long service life and reducing maintenance and replacement costs, thus offering reliable long-term cooling performance.   2. High-Quality and Reliable Refrigeration Valves Hengde’s water-cooled screw chillers use refrigeration valves from renowned brands such as Emerson (USA), Danfoss (Denmark), and Carel (Italy). These high-quality valves are known for their excellent performance and durability. They provide precise flow control and pressure regulation, ensuring efficient and stable refrigerant circulation within the system. The accuracy of these valves not only ensures stable cooling performance but also optimizes energy usage, contributing to energy-saving, efficient operation. Additionally, the reliability of these components reduces the risk of downtime due to valve failures, ensuring continuous system operation.   3. Efficient Heat Exchange System The evaporator and condenser of Hengde’s water cooled screw chiller are equipped with the latest high-efficiency spiral heat exchange copper tubes, which have a high heat transfer coefficient. In the evaporator, these copper tubes quickly absorb heat from the cooled medium, causing the refrigerant to evaporate rapidly, achieving efficient cooling. In the condenser, they efficiently transfer heat from the refrigerant to the cooling water, speeding up the condensation process. This high-efficiency heat exchange ensures superior cooling performance, allowing Hengde’s water cooled screw chiller to handle larger heat loads within a shorter time, making it suitable for various scale refrigeration requirements.   4. Advanced and Intelligent Control System Hengde’s water cooled screw chiller adopts an imported microcomputer control system, with an optional Siemens PLC control system. The advanced control system continuously monitors critical parameters such as temperature, pressure, and flow rate, adjusting the operation mode based on real-time needs. By using precise control algorithms, the system can coordinate the operation of compressors, water pumps, cooling towers, and other components, ensuring the chiller operates at peak performance. An optional RS485 communication function allows the unit to be integrated into an automation management system for remote monitoring, fault alarms, and data analysis, improving operational efficiency and convenience.   5. Independent and Convenient Refrigeration Circuits The water cooled screw chiller features independent refrigeration circuits, meaning each circuit can be maintained and serviced separately without affecting the overall operation. If one circuit fails, the other circuits will continue to function, ensuring uninterrupted cooling. This design greatly enhances the maintainability and flexibility of the equipment, reduces maintenance costs and downtime, and minimizes the impact on production.   6. Comprehensive Safety Protections and Energy-Efficient Operation The chiller is equipped with multiple safety protection features, including thermal protection, power protection, water flow protection, antifreeze protection, high-pressure protection, low-pressure protection, overload protection, phase loss protection, and voltage protection. All fault alerts are displayed in both English and Chinese on the operation screen for easy identification and troubleshooting. These protections prevent damage to the chiller in harsh operating conditions, ensuring safe operation and extending the unit’s lifespan. Additionally, through intelligent control and optimized design, the chiller operates at maximum efficiency with minimal energy consumption, providing a reliable and energy-saving solution that helps users reduce operational costs.   7. High-Quality Electrical Components and Protective Design The chiller uses high-quality electrical components from international brands such as Siemens, Schneider, and LS, which are known for their stability and reliability. The control panel is rated at IPX22 for protection against dust and water droplets, and higher protection ratings are available to suit more demanding environments. This protective design ensures that the chiller operates safely and reliably in complex working conditions, safeguarding the internal electrical components from potential damage.   The water cooled screw chiller, with its efficient cooling performance, stable operation, easy maintenance, and advanced control technology, is an ideal choice for industrial and commercial refrigeration needs. Hengde’s water cooled screw chiller excels in key components selection, system design, and safety features, providing users with high-quality, reliable, and energy-efficient cooling solutions. Its reputation for quality and performance has earned it widespread recognition in the market.   Choose Hengde, Choose Perfect Industrial Chillers!

In modern manufacturing, achieving precise temperature control is no longer a luxury—it is a necessity. Whether it is in injection molding, extrusion, or high-precision plastic processing, the performance of a mold temperature controller (MTC) directly impacts product quality, production efficiency, and energy consumption. Traditional controllers have relied on fixed PID loops and manual adjustments, but these methods often fall short in complex and dynamic production environments. Enter Artificial Intelligence (AI), which is transforming how manufacturers optimize temperature control for maximum precision.     1. The Challenge of Traditional Mold Temperature Control A water mold temperature controller or an oil mold temperature controller circulates a heating or cooling medium to maintain a set mold temperature. While effective, traditional systems often face several limitations: （1）Temperature fluctuations: Minor deviations can cause inconsistent product quality, surface defects, or warping. （2）Energy inefficiency: Overcompensation by heaters or pumps wastes energy. （3）Manual tuning: PID parameters require frequent adjustments based on mold geometry, material type, and environmental factors. （4）Predictive limitations: Traditional controllers cannot anticipate process deviations before they happen.   These challenges highlight the need for smarter, adaptive control solutions that can learn from process data and adjust dynamically.   2. How AI Enhances Mold Temperature Controller Performance AI brings several advantages to mold temperature controllers, including predictive control, adaptive PID optimization, and fault detection. By analyzing real-time operational data, AI models can anticipate temperature changes, optimize control parameters, and detect anomalies before they escalate.   2.1 Predictive Temperature Control By collecting data from both water mold temperature controllers and oil mold temperature controllers—including temperature, pressure, flow rate, ambient conditions, and production parameters—AI can build predictive models that forecast future mold temperatures.   For example, in injection molding, AI models can analyze current injection speed, material properties, and initial mold temperature to forecast the next production cycles. This allows proactive adjustments to heating or cooling strategies, reducing temperature deviations and improving product consistency.   2.2 Adaptive PID Control Traditional PID control relies heavily on manual tuning, which is time-consuming and often inaccurate when molds or production conditions change. AI-enabled controllers automatically optimize PID parameters based on real-time data.   When production conditions change—such as switching molds, adjusting injection speed, or using different materials—AI algorithms sense the changes and dynamically adjust PID settings. This ensures stable temperature control with minimal human intervention.   2.3 Fault Detection and Predictive Maintenance AI can identify potential failures by continuously monitoring operational data. Abnormal patterns, such as pump current spikes, temperature fluctuations, or flow irregularities, are quickly detected.   For instance, if a pump current unexpectedly rises, AI can determine whether it is due to pipeline blockage, impeller wear, or other issues, and alert maintenance staff before critical failures occur. This predictive capability reduces downtime, prevents production losses, and extends the lifespan of both water mold temperature controllers and oil mold temperature controllers. 3. FAQ Q1: Can AI work with existing mold temperature controllers?  Yes. AI can integrate with current water or oil mold temperature controllers via sensors and data collection systems to enhance predictive and adaptive control.   Q2: Will AI reduce energy consumption? Absolutely. By optimizing heating and cooling strategies based on predictive models, AI minimizes unnecessary energy use.   Q3: How does AI improve product quality? AI ensures precise temperature control, reduces fluctuations, and adapts quickly to changing molds or materials, resulting in more consistent production.   Q4: Can AI reduce maintenance costs for mold temperature controllers? Yes. By predicting potential failures and providing early warnings, AI reduces unexpected downtime, prevents major breakdowns, and helps schedule maintenance efficiently for both water mold temperature controllers and oil mold temperature controllers.   Q5: Is AI compatible with different types of molds and materials？ Absolutely. AI learns from historical production data, including mold type, material properties, and process conditions, to optimize control strategies for a wide range of molds and materials.   Q6: Do AI-enabled mold temperature controllers require special training? Not necessarily. Most AI systems are designed with intuitive interfaces. Operators can monitor data, receive alerts, and make adjustments without extensive training.   4. Smart Mold Temperature Controllers from Nanjing Hengde Nanjing Hengde is actively researching and developing the integration of AI technology with mold temperature controllers, aiming to create a new generation of intelligent MTC products. These upcoming products are designed to maintain the high-precision temperature control of traditional mold temperature controllers, while leveraging AI to operate more efficiently and intelligently.   Hengde’s intelligent MTCs under development will provide comprehensive equipment operation data analysis and reports, helping manufacturers optimize production processes, improve efficiency, and reduce operational costs. As AI technology continues to evolve, Nanjing Hengde will continue exploring innovative applications to drive intelligent upgrades in industrial production.  

Mold temperature controllers(MTCs) play a critical role in maintaining precise and stable temperatures during industrial molding processes. However, during commissioning or daily operation, a mold temperature controller(MTC) may sometimes experience minor issues, and many operators can feel confused or anxious when the unit suddenly overheats.   Why is the mold temperature controller(MTC) overheating? How can this issue be resolved safely and efficiently? Here, Hengde shares a comprehensive guide to help you understand the common causes of mold temperature controller(MTC) overheating and the best ways to troubleshoot it.   Common Causes and Solutions of Mold Temperature Controller Overheating： Cause    Description   Solution Temperature Control System Malfunction Faulty sensors or control panel may cause continuous heating, leading to overheating of the mold temperature controller(MTC). Check temperature settings, inspect sensors, and replace damaged components. Heater or Heating Element Issues Damaged or oversized heaters, or dry-running due to low fluid levels, can overheat the mold temperature controller(MTC). Regularly inspect and clean heating elements, ensure proper fluid level, match heater power to process needs. Insufficient Fluid Flow Pump failure, clogged filters, or blocked piping reduces thermal circulation, causing uneven heating of the mold temperature controller(MTC). Verify pump function, clean filters, and ensure unobstructed piping for stable circulation. Inadequate Cooling Dusty fans, blocked heat exchangers, or low water flow reduce heat dissipation, increasing temperature of the mold temperature controller(MTC). Clean air or water cooling systems, ensure proper water flow and fan operation. Exceeding Load Capacity Operating beyond design limits or high ambient temperature may lead to mold temperature controller(MTC) overheating. Run the system within rated capacity; consider higher-power models for heavy-duty applications. Safety Device Failure Malfunctioning thermal switches or pressure sensors can prevent protective shutdowns of the mold temperature controller(MTC). Regularly test safety devices to ensure proper operation and timely alarms. Solenoid Valve Malfunction Solenoid valve plug Solenoid valve coil aging or damaged Clean the solenoid valve Need to change parts     Key Tips for Mold Temperature Controller Maintenance Maintain proper fluid (oil/water) levels before startup of the mold temperature controller(MTC). Avoid sudden power increases or pump shutdowns to prevent dry heating. Schedule annual inspections for temperature sensors, heaters, pumps, and safety devices of the mold temperature controller(MTC).   Conclusion   Regular maintenance and correct operation are essential to prevent mold temperature controller overheating. Understanding these causes and solutions ensures stable temperature control, consistent product quality, and prolonged equipment lifespan. In actual commissioning and operation, the most common causes of mold temperature controller(MTC) overheating include damaged cooling water solenoid valves (or other control valves), insufficient heater power, malfunctioning temperature controllers, and improperly configured electrical settings.   Have questions about your mold temperature controller(MTC), or want to find the best solution for your production line? Reach out to our technical team (www.hengdechiller.com) – we’d love to help!  Choose Hengde，Choose Perfect Mold Temperature Controller！

In the previous article, we already mentioned How To Maintenance The Mold Temperature Controller? Covering fundamental maintenance tips such as cleaning, inspecting electrical components, checking oil/water quality, and ensuring proper circulation.   Building on that foundation, this guide will show you how to extend your mold temperature controller’s life, improve its efficiency, and reduce downtime. Whether you are using an Oil Type Mold Temperature Controller or a Water Type Mold Temperature Controller, following these best practices can save your facility time and money.   Why Proper Maintenance Matters A Mold Temperature Controller plays a crucial role in precision temperature control for injection molding, extrusion, rubber, and other process manufacturing. A well-maintained controller can run reliably for 7–10 years or more, while neglected equipment may face frequent breakdowns within 1–3 years. Extending your mold temperature controller’s lifespan not only improves production stability but also reduces repair costs, energy consumption, and unplanned downtime.   Core Maintenance Principles for Mold Temperature Controllers Before exploring advanced lifespan-extension strategies, let's quickly review the core maintenance points from the previous article: Maintenance Item Summary Pipe & filter cleaning Prevents clogging and ensures efficient circulation Pump inspection Reduces noise, vibration, and flow issues Electrical component check Prevents short circuits and safety hazards Temperature monitoring  Maintains stable process parameters Medium selection (oil/water) Ensures proper heat transfer and system longevity   Following these steps consistently is the first step to achieving optimal performance. 1. Choose the Right Medium and Maintain It Properly Selecting the correct medium is essential for Mold Temperature Controller Maintenance: Water Type Mold Temperature Controller: Suitable for temperatures below 180°C（356˚F）. Pay attention to scaling and corrosion. Oil Type Mold Temperature Controller: Ideal for applications above 200°C（392˚F）. Use high-quality thermal oil to prevent oxidation and carbonization.   Note：If you use an oil mold temperature controller, please be aware of carbon build-up inside the heating tubes, as it is a key factor that reduces heating efficiency and shortens equipment life. Over time, high-temperature oil may deteriorate and form carbon deposits, which act as an insulating layer and prevent proper heat transfer. When heat cannot disperse effectively, the heating tubes are forced to work under higher load, increasing energy use and the risk of overheating or tube failure. To avoid this, perform routine checks, replace aged thermal oil in time, and clean the system when needed. This helps keep the heating tubes efficient, safe, and durable. 2. Maintain a Stable Operating Environment The installation and surrounding environment affect the lifespan of your mold temperature controller: Avoid humid, dusty, or corrosive conditions. Ensure proper ventilation and heat dissipation. Do not place near furnaces, hot mold surfaces, or machine exhaust outlets. A stable environment reduces stress on pumps, electrical components, and heating elements, helping improve mold temperature controller efficiency over time. 3. Avoid Frequent Heating and Cooling Cycles Frequent temperature changes accelerate metal fatigue, wear on seals, and electrical stress. To minimize this: Keep the process temperature as stable as possible. Gradually adjust temperatures when cooling down or heating up. Lower the temperature to a safe range before powering off. By reducing thermal shock, both oil and water type mold temperature controllers can maintain optimal performance longer.   4. Use Genuine Spare Parts and Quality Components Each component inside a mold temperature controller contributes to the overall stability of the system. Pumps, heating elements, control boards, relays, and sensors are exposed to constant temperature fluctuations and mechanical stress.Low-quality components often lead to chain failures. Choose reliable brands for: Temperature controllers(For example, Omron, WEST and etc) Relays(ABB / Fuji Electric  / Omron / Siemens / Eaton, etc) Pumps and motors Heating tubes Electrical components (Schneider / Siemens / Eaton / ABB,etc） While the initial cost may be higher, the long-term benefits include reduced downtime, consistent temperature control, and extended device life.  5. Implement Preventive Maintenance A structured preventive maintenance schedule is more cost-effective than reactive repairs. Recommended intervals: Interval Maintenance Tasks Weekly Check leaks, alarms, pump flow, and temperature accuracy Monthly Clean filters, inspect pump pressure, check wiring Semi-annual Test oil/water quality, calibrate controllers, inspect safety valves Annual Full system check, including electrical testing, seal replacement, and pressure testing Documenting maintenance actions helps identify trends, anticipate failures, and improves the extend mold temperature controller lifespan goal.   6. Train Operators to Avoid Misuse Many failures are caused by improper operation rather than product defects: Running dry without circulation Turning on heating before starting the pump Operating beyond temperature limits Providing operator training for proper start-up, shutdown, and emergency procedures ensures safety and reliability, while also protecting your mold temperature controller investment. 7. Troubleshooting and Performance Optimization Despite careful maintenance, issues may arise. Familiarity with Mold Temperature Controller Troubleshooting techniques is essential: * Temperature Fluctuations: Check for pump flow issues or sensor misalignment. * Pump Noise or Vibration: Inspect for air pockets, worn bearings, or blocked filters. * Heating/Cooling Inefficiency: Assess medium quality, heating element condition, or heat exchanger performance. * Early troubleshooting prevents minor issues from escalating, keeping production on schedule and maximizing controller lifespan.   Conclusion Extending the life of your Mold Temperature Controller requires more than routine cleaning—it involves a combination of correct medium use, stable operating environment, preventive maintenance, quality components, operator training, and smart monitoring. By following these strategies: You extend mold temperature controller lifespan. You improve mold temperature controller efficiency. You reduce the need for costly repairs through timely mold temperature controller troubleshooting. Whether you are using an Oil Type Mold Temperature Controller or a Water Type Mold Temperature Controller, a disciplined maintenance routine ensures your investment continues delivering reliable, precise temperature control for years.   For more detailed guidance, visit our previous article: How to maintenance the mold temperature controller?

Heat transfer rolls, also called chill rolls or converting rolls, are vital for maintaining quality and consistency in the converting industry. Hengde manufactures reliable temperature control units (TCUs) and industrial chillers that ensure precise thermal regulation, supporting smooth and efficient production. Whether you need controlled heating, cooling, or a combination of the two, our solutions are designed to meet your process demands with accuracy and dependability.    In the production of coating, laminating and printing, heat transfer rolls play a vital role in transferring heat uniformly. Achieving precise and stable roll temperature is crucial for consistent material thickness, smooth surface finishes, and high production efficiency. HENGDE offers advanced heat transfer rolls temperature control units (TCUs) to provide reliable thermal management, ensuring that each roll operates under optimal conditions.    How Hengde’s Temperature Control Units Operate Hengde’s temperature control units (TCUs) and industrial process chillers are engineered to maintain precise temperature management for heat transfer rolls.   Key Advantages of Our Temperature Control Unit Fluid Circulation: Water or oil flows through connected pipes or hoses, keeping the rolls at a stable temperature. Accurate Temperature Control: Easily adjustable to meet your specific process requirements for optimal efficiency. Flexible Application: Can be used for both heating and cooling, tailored to your production needs. PID Temperature Controllers – providing precise heat regulation within ±1°C Use Hengde’s temperature controller unit to choose the ideal temperature control solution for your converting process.   Applications for Heat Transfer Rolls Heat transfer rolls are used in a wide range of applications for precise temperature control in industrial processes like textile finishing, printing, laminating, and plastics manufacturing, particularly in coating, laminating, and printing. * Coating: Ensures uniform application of coatings on textiles, plastics, films, and metals for improved adhesion, texture, and durability. * Laminating: Maintains stable temperatures to bond layers in textiles, films, papers, and plastics efficiently. * Printing: Supports ink curing and finishing processes, improving print quality and reducing drying time.   These rolls are essential for consistent, high-quality results in a variety of industrial production settings.   Benefits of Hengde Temperature Control Using HENGDE Heat Transfer Rolls Temperature Control systems provides multiple advantages: Consistent Product Quality: Uniform temperature prevents defects such as wrinkles, uneven coatings, or delamination. Energy Efficiency: Intelligent controls optimize heating and cooling cycles to save power. Reduced Downtime: Faster stabilization of roll temperature reduces process delays. Extended Equipment Life: Stable temperatures reduce mechanical stress and wear on rolls.     Why Choose HENGDE Temperature Control Units for Heat Transfer Rolls? HENGDE has over 20 years of experience in industrial temperature control units and is a trusted partner for manufacturers worldwide. Our Heat Transfer Rolls Temperature Control Units are: Built with premium components from Schneider, Siemens, and Omron. Available in customizable configurations for both water mold temperature control units and oil mold temperature control units. Designed to meet rigorous industrial standards with long-term reliability. We focus on delivering solutions tailored to your production needs, ensuring precise control and optimal thermal performance for every roll.   Request a Custom Heat Transfer Roll Temperature Control Unit Quote Ready to improve your roll production process? Contact HENGDE today for a customized Heat Transfer Rolls Temperature Control Unit (TCU). Our engineering team can help you select the ideal water temperature control unit or oil temperature control unit for your specific application, ensuring consistent results, energy efficiency, and higher productivity.

At HENGDE, we understand that every heat transfer roll system has unique temperature control needs. That’s why our Temperature Control Units (TCUs) are engineered with flexible design options, advanced control systems, and durable components to optimize both performance and energy efficiency.     How HENGDE Temperature Controller Units(TCUs) Improve Process Performance？ * Precise Temperature Regulation Our Temperature Controller Units(TCUs) maintain exact temperature levels to ensure uniform roll performance and eliminate temperature drift. * Fast Heating and Cooling Cycles Using efficient heat exchangers and high-flow pumps, HENGDE units shorten startup times and minimize process delays. * Energy-Efficient Operation Smart control algorithms adjust power usage dynamically, reducing unnecessary heating or cooling. * Customized Design for Any Industry HENGDE supports OEM/ODM customization — from compact water temperature control units for fast-acting systems to oil temperature control units for high-temperature stability. * Reliable Components and Safety Every unit integrates premium electrical and hydraulic parts from brands like Siemens and Schneider, ensuring long-lasting reliability.   Whether your operation requires fast response or high-temperature consistency, HENGDE provides the perfect balance of precision and durability. By integrating HENGDE Heat Transfer Rolls Temperature Control Units, you gain greater control, consistency, and confidence in your heat transfer processes.Our water temperature control unit and oil temperature control unit deliver unmatched reliability and customization to meet every industrial demand.   Learn more about HENGDE’s full range of Temperature Control Units (TCUs) and how we can support your specific production needs.

Heat transfer rolls — sometimes referred to as chill rolls or converting rolls — are essential components in many converting industry operations. Hengde offers premium temperature control units (TCUs) and industrial chillers engineered for accurate temperature management, helping your production run efficiently and without interruptions. Whether your application calls for precise heating, effective cooling, or both, our TCUs and chillers provide dependable performance customized to your process requirements.   1. The Importance of Consistent Temperature in Roll-Based Processes  In processes like coating, printing, and lamination, even minor temperature variations on a heat transfer roll can cause visible defects or material inconsistencies. That’s why a reliable Heat Transfer Rolls Temperature Control Unit (TCU) is essential to maintaining uniformity, efficiency, and quality.   2. The Risks of Poor Temperature Regulation Without proper temperature control:  * Coatings may become uneven or peel off * Films can stretch or wrinkle * Laminated layers may lose adhesion * Surface finish quality can decline These issues not only affect product appearance but also increase waste and downtime.   3. How Hengde Temperature Control Units (TCUs) Solve These Problems？ A well-designed Temperature Control Unit continuously circulates heated or cooled fluid (water or oil) through the roll, stabilizing the temperature throughout the production run. HENGDE’s Heat Transfer Rolls Temperature Control Units use intelligent control logic and PID precision to keep temperature fluctuations within ±1°C — ensuring each batch maintains identical quality.   4. Benefits of Consistent Temperature Control * Improved Product Uniformity Stable roll temperature produces smooth, consistent materials. * Reduced Energy Waste Efficient TCUs help maintain heat balance without excessive energy consumption. * Higher Productivity Fewer reworks and production interruptions. * Longer Equipment Lifespan Controlled heating reduces stress on mechanical parts and roll surfaces. Accurate and reliable temperature management is not optional — it’s essential. With HENGDE’s Heat Transfer Rolls Temperature Control solutions, you can achieve stable operation, superior quality, and long-term cost savings.    Want to know how these temperature controller units (TCUs) enhance system performance? Continue reading our next article: “How Temperature Controller Units Optimize Your Heat Transfer Roll System?”

Understanding the Role of TCUs in the Heat Transfer Roll Industry Heat transfer rolls, sometimes called chill rolls or converting rolls. In many industries-from film extrusion and coating to calendaring and lamination-heat transfer rolls are essential for achieving precise and uniform surface temperatures. To ensure stable roll performance, manufacturers rely on Heat Transfer Rolls Temperature Control Units (TCUs) that maintain consistent heating and cooling cycles during operation.   A Heat Transfer Rolls Temperature Control Unit precisely controls the roll’s surface temperature by circulating a thermal medium, typically water or oil (so, it also called heat transfer roll water temperature control unit and heat transfer roll oil temperature control unit), through the roll’s internal channels. This keeps the temperature uniform, preventing hot or cold spots that could affect product quality.   Types of Temperature Control Units (TCUs)   HENGDE offers two main categories of TCUs for different working conditions: Heat Transfer Roll Water Temperature Control Unit  Designed for medium-temperature operations that require rapid response and high heat transfer efficiency. Perfect for lamination, printing, and coating lines. Heat Transfer Roll Oil Temperature Control Unit Ideal for high-temperature applications. It ensures excellent thermal stability and prevents temperature overshoot even under heavy workloads.   Key Components of a HENGDE Heat Transfer Rolls Temperature Control Units Each HENGDE Temperature Control Unit features: Advanced PID temperature controllers. High-efficiency pumps and heat exchangers. Durable components from Schneider, Siemens, and Omron. Safety protections including overheat alarms and flow monitoring. Explosive device pipe. 304 stainless steel pipeline to reduce the tube group and rust. Imported microcomputer or PLC control. (Optional) RS485 communication function, automated management.(optional)   In short, Heat Transfer Rolls Temperature Control Units (TCUs) are the heart of every precision heating process. With HENGDE’s advanced water temperature control units and oil temperature control units, you can maintain consistent temperature, improve product quality, and extend the lifespan of your heat transfer rolls.   At Nanjing Hengde Electrical Equipment Co., Ltd, we specialize in manufacturing advanced temperature control units (TCUs) and industrial chillers that maintain consistent and accurate temperature levels throughout your production process. Our systems are built to handle heating, cooling, or integrated temperature control with outstanding reliability and efficiency, ensuring optimal performance for every application.   Next, explore why temperature control is so critical in heat transfer roll systems.

In the highly competitive plastic processing industry, how to improve production efficiency, ensure product quality and reduce costs is the focus of every enterprise. As a vital auxiliary equipment in the injection molding process, the water mold temperature controller machine for injection molding plays a key role in it. With years of technical accumulation and innovative spirit, Hengde Company has brought high quality water mold temperature controller machines for injection molding to the industry, helping enterprises to achieve efficient production. It has established a good reputation in plastic processing and has become a trusted partner of many companies.   Working principle of water mold temperature controller for injection molding The water mold temperature controller machine for injection molding uses water as a heat transfer medium and accurately controls the temperature of the mold through a heating and cooling system. During the injection molding process, the water mold temperature controller machine heats the water to the set temperature, and then delivers the hot water to the cooling channel of the mold through a circulating pump, so that the mold reaches and remains within the appropriate temperature range. When the mold temperature is too high, the water mold temperature controller machine can reduce the water temperature through the cooling system to ensure the stability of the mold temperature. This precise temperature control can ensure that the plastic material flows and forms evenly in the mold, and improve the quality and dimensional accuracy of the product.   Hengde's water mold temperature controller machine for injection molding adopts imported PC microcomputer touch control, European appearance, simple atmosphere. After starting up, it also has a unique automatic exhaust function, which can remove the air in the system and then heat it. The internal pipeline of the oil circulation heater adopts stainless steel one-piece molding technology, which heats evenly, is not easy to lose, and is resistant to high temperature and corrosion.   Advantages of Hengde injection molding dedicated water mold temperature controller machine 1. Accurate temperature control Hengde water mold temperature controller machine adopts advanced temperature sensors and intelligent control systems, which can monitor and adjust the water temperature in real time and control the mold temperature within the range of ±1℃. Whether it is small precision injection molding parts or large injection molding products, the stability and consistency of their quality can be guaranteed. For example, when producing plastic casings for electronic equipment, precise temperature control can avoid defects such as deformation and bubbles in the product and improve the yield rate of the product.   2. High efficiency and energy saving Hengde water mold temperature controller machine adopts efficient heating elements and optimized circulation systems, which can quickly heat and cool the mold and reduce the production cycle. At the same time, the intelligent energy-saving control system can automatically adjust the heating and cooling power according to the actual temperature requirements of the mold to reduce energy consumption. Compared with traditional temperature control equipment, Hengde water mold temperature controller machine can save 20% - 30% of energy costs and reduce production costs for enterprises.   3. Safe and reliable Hengde water mold temperature controller machine has multiple safety protection functions, such as overheat protection, overvoltage protection, leakage protection, etc., to ensure the safety of the equipment during operation. In addition, the equipment adopts high quality materials and exquisite manufacturing technology, has good corrosion resistance and stability, and reduces equipment failure and maintenance costs.   4. Easy to operate Hengde water mold temperature controller machine is equipped with an intuitive operation interface and a humanized control system. Operators can easily set and adjust parameters such as temperature and pressure. At the same time, the equipment also has fault alarm and diagnosis functions. When the equipment fails, it can promptly issue an alarm and display fault information, which is convenient for operators to repair and handle.   Application case Before using Hengde injection molding special water mold temperature controller machine, a well-known plastic product manufacturer had a low product yield and low production efficiency. After research and analysis by Hengde's professional team, a set of water mold temperature controller machine solutions suitable for its production process was customized for the company. After installing and using Hengde water mold temperature controller machine, the company's product yield increased by 15%, the production cycle was shortened by 20%, and energy consumption was reduced by 25%, achieving significant economic benefits.   In the plastic injection molding process, the injection molding dedicated water mold temperature controller machine is a key equipment to ensure product quality and production efficiency. When Hengde's injection molding dedicated water mold temperature controller machine is just started, the water source is introduced by the cooling circulation pipe, and the exhaust is automatically started. After the water in the whole system is replenished, observe whether the pressure gauge is stable. After the pointer is stable, the temperature value can be set. At this time, the heating device starts to work, and the temperature is detected by the temperature probe. If the temperature does not reach the set value, the heating device will continue to work until its temperature reaches the set value. After that, the temperature probe feeds back the signal to the computer board, and the computer board outputs a signal to stop heating. If the temperature exceeds the set value, the cooling solenoid valve is started, and some cold water is introduced for cooling until it reaches the set temperature and then closes. Hengde's injection molding dedicated water mold temperature controller machine provides an ideal temperature control solution for plastic processing companies with its advantages such as precise temperature control, high efficiency and energy saving, safety and reliability, and easy operation. In the future, Hengde will continue to uphold the concept of innovation, quality, and service, continuously improve product performance and service levels, and make greater contributions to the development of the plastic processing industry.   Choose Hengde, Choose Perfect Mold Temperature Controller!

The air cooled screw chiller, a critical component in the refrigeration industry, stands out for its unique design and advanced technology. The air cooled screw chiller offers significant advantages in industrial production and commercial sectors. Below are the key features of the air-cooled screw chiller.   1. High-Efficiency Cooling Equipped with a screw compressor, the air cooled screw chiller uses a rotor structure that enables the refrigerant gas to be compressed efficiently and smoothly. It has a large compression ratio and a broad range of cooling capacity, making it suitable for medium to large-scale cooling needs. The screw chiller can quickly and steadily provide low-temperature cooling, meeting the requirements of various processes and spaces. Hengde has optimized the design of its screw compressors, choosing imported semi-hermetic twin-screw compressors. Compared to traditional rotary compressors, these offer high efficiency, quiet operation, simple operation, and long service life.    2. Air-Cooled Heat Exchange, No Water Source Required Unlike water cooled screw chillers, air cooled screw chillers use air as the heat exchange medium. A fan drives the airflow through the condenser, enabling the refrigerant to exchange heat with the external air. This feature eliminates the need for a complex cooling water system, making installation and use more convenient, especially in areas where water is scarce or where it is difficult to install water cooling pipes, such as remote industrial plants or commercial buildings in water-deficient regions. Hengde has innovated the design of the air ducts, employing high-efficiency, low-noise fans and optimized heat exchange fins, ensuring effective heat dissipation while reducing noise, thus providing users with a quieter and more comfortable environment.   3. Easy Installation With a compact overall structure and small footprint, the air-cooled screw chiller doesn’t require specialized cooling towers, water pumps, or water piping systems. Once the unit arrives at the site, it only needs simple positioning and electrical connections before being quickly put into operation. This greatly reduces installation time, costs, and engineering complexity. Hengde’s air-cooled screw chillers undergo strict pre-commissioning before leaving the factory to ensure the reliability and stability of all components. The company also provides detailed installation manuals and professional technical support, making it easy even for first-time users to install and start the unit.   4. Stable and Reliable Operation The unit uses internationally renowned refrigeration components to ensure quality and operational stability. The evaporator and condenser are made with the latest high-efficiency spiral heat exchange copper tubes, which have a high heat transfer coefficient, ensuring excellent cooling performance. The air-cooled chiller is controlled by a microcomputer programmable controller, and its compressor features a multi-stage energy adjustment system that precisely controls the matching of cooling capacity and load in real-time.   5. Convenient Maintenance The components of the air-cooled screw chiller are logically arranged, making them easy for maintenance personnel to access and operate. Major components, such as the compressor, condenser, and evaporator, have independent service spaces, making routine inspections, cleaning, and maintenance easier. Additionally, the intelligent control system can send fault alerts, helping maintenance personnel quickly identify and resolve issues, reducing maintenance difficulty and costs. Hengde's screw chillers feature independent refrigeration circuits that can be maintained and repaired separately without affecting the operation of the entire unit. The professional after-sales service team is always ready to respond to maintenance needs, ensuring the unit operates at its best.   6. Energy-Efficient and Environmentally Friendly With continuous technological advancements, modern air-cooled screw chillers incorporate high-efficiency heat exchangers and energy-saving compressors, improving energy utilization and reducing energy consumption. Their air-cooled heat exchange system also avoids environmental pollution caused by cooling water discharge, aligning with current trends in energy conservation and environmental protection. Hengde actively responds to national energy-saving and environmental protection policies by exploring and applying new energy-efficient materials and technologies during product development. As a result, Hengde’s air-cooled screw chillers achieve industry-leading energy efficiency, helping customers reduce operational costs while contributing positively to environmental conservation.   With features such as high-efficiency cooling, easy installation, stable operation, convenient maintenance, and energy efficiency, the air-cooled screw chiller is an ideal choice for refrigeration needs across various industries. Hengde, known for its technological innovation, product quality, and exceptional after-sales service, has become a trusted choice for customers when selecting air-cooled screw chillers. The company provides reliable cooling solutions that support production and everyday life across diverse sectors.   Choose Hengde, Choose Perfect Air Cooled Screw Chillers!

Cast film calendering mold temperature controller is also called cast film calendering oil heater and cast film calendering electric heating oil furnace. It is a special mold temperature controller for cast film plastic thermoforming. Nowadays, in the process of temperature-controlled cast film forming, more and more customers tend to choose mold temperature controllers.   As a consumable part of the mold temperature controller, the heating tube is used to heat the heat transfer oil to ensure that the heat transfer oil can be heated to the preset temperature within a unit time. The selection of heating tubes mainly considers its power. The greater the heating power, the faster the heating speed. Of course, the higher the heating power, the better. The higher the heating power, the larger the specifications of cables and electrical components are required, which increases the cost of the mold temperature controller.   How to check whether the heating tube of the cast film calendering mold temperature controller is burned out? Since the mold temperature controller uses electric heating tubes, if there is a problem with the quality of the heating tubes, or the mold temperature controller manufacturer's design is unreasonable, the heating tubes will burn out and the mold temperature controller will not be able to heat. For the burnout of the mold temperature controller heating tube, we can use a multimeter to detect the resistance value and current value. If the data is abnormal, it is possible that the mold temperature controller heating tube is burnt out and needs to be replaced.   If the cast film calendering mold temperature controller heating tube is burnt out, what should we do at this time? The following are the steps and suggestions for solving the problem of heating tube burnout: 1. Shut down and cut off the power Immediately stop the equipment operation and disconnect the power supply to ensure safe operation. Turn off the heating and cooling system of the mold temperature controller to prevent further damage.   2. Check the cause of the burnout of the heating tube For the water mold temperature controller, it may be due to insufficient water inlet pressure and insufficient external water entering, causing the water-type mold temperature controller to be short of water. At this time, in order to protect the heating tube and the circulation pump, the mold temperature controller will alarm. Another reason may be that the pressure controller fails and cannot detect the system pressure normally, or a false alarm occurs. At this time, it is necessary to measure the current signal of the pressure controller.   3. Replace the heating tube Choose a suitable heating tube: According to the model and specifications of the mold temperature controller, choose a heating tube with the same power, size and material. Ensure that the temperature range and corrosion resistance of the heating tube meet the process requirements. Install a new heating tube: Install the heating tube correctly according to the equipment manual or the guidance of professionals. Ensure that the wiring of the heating tube is firm to avoid poor contact or short circuit. Test operation: After replacement, first perform a no-load test to check whether the heating tube is working properly. Gradually increase the temperature and observe whether the temperature control is stable.   The heating tubes of the cast film forming mold temperature controller equipped by Hengde for each customer are of high quality. Customers do not need to worry about their quality during use. If you buy a mold temperature controller from other manufacturers, remember to pay attention to the quality of the heating tube.   4. Check and repair other related components Check the temperature control system: confirm whether the temperature sensor, controller and relay are working properly. Calibrate or replace the temperature control element if necessary. Check the circulation system: ensure that the heat transfer medium is sufficient and the circulation pump is operating normally. Clean the filter or pipe to avoid blockage. Check the power supply and circuit: check whether the voltage is stable and the wiring is firm. Install a voltage stabilizer or replace damaged electrical components if necessary.   5. Preventive measures In order to avoid the heating tube from burning out again, the following preventive measures can be taken: Regular maintenance: Regularly check and clean the equipment pipeline. According to the usage, regularly clean the pipeline scale, carbon deposits, and impurities to avoid scale and carbon deposits blocking the pipeline and causing the heating tube to burn out, thereby affecting the service life of the heating tube. Monitoring operating parameters: Real-time monitoring of the temperature and current of the heating tube, and timely handling of abnormalities. Use high-quality heating tubes: Choose high-temperature and corrosion-resistant high-quality heating tubes to extend the service life. Optimize process parameters: Avoid long-term overload operation and set the heating temperature and time reasonably.   6. Seek professional support If the problem is complicated or cannot be solved by yourself, it is recommended to contact the equipment manufacturer or professional maintenance personnel for inspection and maintenance to ensure the safe and reliable operation of the equipment.   Through the above steps, the problem of burnout of the heating tube of the cast film calendering mold temperature controller can be effectively solved, and preventive measures can be taken to reduce the occurrence of similar failures and ensure the continuity of production and the stability of product quality. Hengde Company escorts your cast film calendering mold temperature controller.   Choose Hengde，Choose Perfect Mold Temperature Controller！

Water cooled chillers are essential equipment in the refrigeration industry, widely used in industrial production and commercial buildings. Water chillers are primarily composed of a compressor, condenser, evaporator, and expansion valve, working together in a refrigeration cycle to transfer heat and achieve cooling effects. In industrial production, water-cooled chillers precisely control process temperatures; in commercial buildings, they create a comfortable indoor environment.   However, the stable operation of a water-cooled chiller is closely related to water quality. Proper water quality is crucial for its efficient operation and extended lifespan. 1. pH Level The ideal pH range for water is between 6.5 and 8.5. Water with a pH below 6.5 is acidic and can corrode the chiller’s metal components. Water with a pH above 8.5 is alkaline and can lead to scaling, which affects the chiller's performance.   2. Water Hardness Water hardness is another critical factor. The total hardness should not exceed 200mg/L (calculated as calcium carbonate). High hardness levels can lead to the formation of scale, reducing cooling efficiency, increasing energy consumption, and even causing blockages in the pipes.   3. Turbidity Turbidity should be kept below 5 NTU. Higher turbidity can cause suspended particles to wear down equipment, clog filters, and reduce heat exchange efficiency.   4. Microorganisms Microbial content must also be carefully monitored. Excessive microbial growth can result in biological slime buildup, which corrodes equipment, decreases heat exchange efficiency, and causes blockages in pipes.   High quality water is crucial for the optimal performance of a water cooled chiller. Hengde, with its extensive experience in refrigeration equipment development and production, offers water cooled chillers that not only deliver excellent cooling performance but also consider water quality compatibility. We provide comprehensive water quality treatment advice and equipment maintenance plans, helping industries meet their cooling needs efficiently and reliably. Hengde has earned a strong reputation in the refrigeration market for its high-quality products and services.   Choose Hengde, Choose Perfect Chillers!