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In the injection molding of plastic molds, what are the effects of the high temperature of the injec

Issuing time:2022-03-31 21:49

In plastic mold injection molding, temperature is an important factor affecting the quality of injection molded products, whether it is mold temperature or injection molding machine temperature. So in the injection molding of plastic molds, what kind of impact will be caused if the temperature of the injection molding machine is too high?

1) Due to the small fitting clearance of the plastic mold, the moving parts with different thermal expansion coefficients in the hydraulic components are stuck, resulting in the failure of the plastic mold movement, affecting the transmission accuracy of the hydraulic system, thereby deteriorating the working performance of the hydraulic system. The working quality of the components.

2) Reduce the viscosity of the lubricating oil. If the temperature of the injection molding machine is too high, the viscosity of the oil will decrease, the leakage will increase, and the efficiency of the entire system will decrease. As the viscosity of the lubricating oil decreases, the oil film of the sliding valve and other moving parts becomes thinner and cut, and the frictional resistance increases, resulting in the deterioration of the performance of the lubricating oil.

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3) The temperature of the injection molding machine increases, which causes the deformation of the seal, reduces the sealing performance and service life, and causes leakage.

4) The increase of the temperature of the injection molding machine will lead to the deterioration of the quality of the workpiece, and the gas decomposed in the oil will reduce the working performance of the hydraulic system. Affects the working parts of the system. Excessive temperature will accelerate the aging of the seal, crack the seal, etc.

Therefore, in the injection molding process of plastic molds, it is necessary to always pay attention to the changes of injection molding process parameters and make adjustments in time.


Kefen is speciliazing in precision mold making and injection moulding. We are a high-tech enterprise specializing in the manufacture and sales of tooling and fixtures for aviation products, automobiles and locomotives; aircraft blade molds and measuring tools!The company is mainly engaged in precision molds for various parts of aero-engines, and has 20 years of design and production experience in the field of lost wax molds. Welcome all distinguished customers to visit our company!

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