March 6, 2024
Circulators (Thermolators, Temperature Controllers) are essential components in injection molding processes, primarily utilized for controlling the temperature of molds so that as the part cools after injection, it maintains dimension, shape and structure – ensuring consistent quality and efficiency. Controlling the mold temperature is critical to good parts. You can get good melt flow, and the cavity can fill quickly and fully, but if the part is not cooled properly then a good melt flow means nothing.
Circulators need to be compatible with the injection molding machinery and seamlessly integrated into the overall manufacturing setup for efficient operation. Regular maintenance and monitoring of circulators are essential to ensure they continue to function optimally, thereby avoiding downtime and production delays. In advanced setups, circulators may be integrated into the overall automation system of the injection molding process, allowing for real-time monitoring and control of temperature parameters.
Here’s how circulators are typically used in injection molding:
- Cooling: Cools the molds after each cycle. Rapid cooling is essential for improving cycle times and overall productivity.
- Heating: In some cases, circulators may also be used for heating the molds to specific temperatures.
- Thermal Stability: Ensure thermal stability throughout the injection molding process, which is crucial for preventing defects and maintaining part quality.
- Energy Efficiency: Modern circulators often come with energy-saving features to optimize energy consumption during the temperature control process, contributing to cost-effectiveness and sustainability.
- Process Optimization: By precisely controlling the temperature of molds, circulators play a vital role in optimizing the process for different materials and product specifications.
Overall, circulators play a critical role in maintaining temperature control and ensuring the quality, efficiency, and reliability of injection molding operations. Their proper selection, installation, and maintenance are essential considerations for any injection molding facility.
IMS offers several options for temperature control needs: Circulators, Mold Temperature Controllers
You May Also Need:
Heat Transfer Fluids
A Quick Comparison Of Heat Transfer Mediums
• Water — Limited use range: 32° to 212°F. Encourages corrosion.
• Uninhibited Glycols — Allow temperatures to 250°F, but 2½ times more corrosive than water, if not neutralized.
• Automotive antifreeze — Contains corrosion inhibitors, but can foul heat transfer surfaces in less turbulent systems.
• UG-10 Ethylene Glycol — Low silicate formula provides good corrosion protection at a relatively low price.
• EG-17 Ethylene Glycol — Industrial inhibitors coat surfaces and impact pH for maximum corrosion protection.
• Pro-17 Inhibited Propylene Glycol — Non-Toxic Heat Transfer Fluid With Maximum Protection Against Acidity and Corrosion.
• PG-1 Hi-Heat Transfer Fluid — The Ultimate, Non-Toxic Fluid For Non-Pressurized Heating To 600°F.
• FF-1 Oil System Flushing Fluid — Improves heat transfer for faster cycles.
• PSC Plus Oil System Cleaner — Maximizes heat transfer for more parts and increased quality.
In addition, how efficiently any of the above units work is directly tied to how clean your mold passages are. Any buildup of scale can affect the transfer of heat. The passages need to be checked and maintained regularly. To help with that, IMS offers the Limebuster which helps remove the scale buildup in mold passages. Just 1/64″ of scale can reduce the heat transfer rate up to 40%. Using an acid/water mixture, the fluid is circulated by a low pressure pump. The fluid helps dissolve the scale slowly so good heat transfer can return. This type of unit also is used to clean heat exchangers.
While the above is basic in its presentation, the message is clear; IMS understands and can help. IMS has the expertise and the equipment to help maintain and even improve your process. Good parts and reduced scrap means you make money.
That is what we are here to help with. Call IMS Today for all your Injection Molding needs.
IMS Company Blog 
Leave a comment