In plastic mold injection molding, what effects will the excessive temperature of the injection molding machine cause?
In plastic mold injection molding, temperature is an important factor affecting the quality of injection molded products, whether it is the mold temperature or the injection molding machine temperature. So in plastic mold injection molding, what kind of impact will it have if the temperature of the injection molding machine is too high?
1) Due to the small matching clearance of the plastic mold, the moving parts with different thermal expansion coefficients in the hydraulic components are stuck, resulting in failure of the plastic mold movement, affecting the transmission accuracy of the hydraulic system, and thus 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 moving parts such as sliding valves becomes thinner and cut, the friction resistance increases, and the performance of the lubricating oil deteriorates.
3) The temperature of the injection molding machine increases, causing the seal to deform, reducing the sealing performance and service life, and causing leakage.
4) The increase in the temperature of the injection molding machine will lead to the deterioration of the workpiece quality, and the gas decomposed in the oil will reduce the working performance of the hydraulic system. It will affect the working parts of the system. Excessive temperature will accelerate the aging of the seal and cause the seal to crack, etc.
Therefore, during the plastic mold injection molding process, it is necessary to always pay attention to the changes in injection molding process parameters and make timely adjustments.
