So what are the effects of high temperature during injection molding of pin header connectors?
1. Deformation of rubber seals: Experts from Shenzhen Tyco Hanze Co., Ltd. found in the actual test that the high temperature rise of the injection molding machine will deform the rubber seals, accelerate the aging failure, reduce the sealing performance and service life, and cause leakage.
2. Thermal deformation of the machine: The moving parts with different thermal expansion coefficients in the hydraulic components are stuck due to their smaller fitting clearances, causing action failure, affecting the transmission accuracy of the hydraulic system, and resulting in poor working quality of the components.
3. Accelerate the oxidative deterioration of the oil: if the temperature rise of the injection molding machine is too high, the oxidative deterioration of the oil will be accelerated, the asphalt material will be precipitated, and the service life of the hydraulic oil will be reduced. Precipitates block the damping holes and slit valve ports, causing the pressure valve to be stuck and unable to operate, the metal pipeline to stretch and bend, or even rupture.
4. Reduce the viscosity of the oil: If the temperature rise of the injection molding machine is too high, the viscosity of the oil will decrease, the leakage will increase, and the volumetric efficiency of the pump and the efficiency of the entire system will be significantly reduced. As the viscosity of the oil decreases, the oil film of the moving parts such as the spool valve is thinned and cut, and the frictional resistance increases, resulting in increased wear.
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