Failure analysis of blow molding machine temperature rise

Failure analysis of blow molding machine temperature rise
Extrusion blow molding machine manufacturer During the production and processing process, it is very important to do a good job in temperature control of the hollow blow molding machine. Extrusion blow molding machine manufacturer should not only let the blow molding machine reach the proper temperature, but also control the heating and cooling process of the blow molding machine.

1. Thermal deformation

Extrusion blow molding machine manufacturer If the temperature of the blow molding machine is too high, thermal deformation will occur. Since the thermal expansion coefficients of the moving parts in the hydraulic components are different, if the temperature of the blow molding machine is too high, the moving parts in the hydraulic components will not be able to cooperate well, and the fit gap between the moving parts will become smaller. It gets stuck during the movement and the moving parts fail to work. Failure of moving parts will affect the transmission accuracy of the hydraulic system of the hollow blow molding machine, resulting in poor working quality of the parts.

2. Decrease in oil viscosity

The volumetric efficiency of the pump and the efficiency of the overall system will be significantly reduced. As the viscosity of the oil decreases, the oil film of moving parts such as slide valves becomes thinner or cut, and the frictional resistance increases, resulting in increased wear.

3. Deformation of rubber seals

Extrusion blow molding machine manufacturer Improper temperature control will accelerate the aging and failure of seals, reduce sealing performance, shorten service life, and cause leakage. Accelerate the oxidative deterioration of oil. Once the oil is oxidized and deteriorated, asphaltic substances will be precipitated, reducing the service life of the hydraulic oil. The precipitated substance will block the small damping hole and the slit valve port, and the pressure valve will be stuck and unable to move.

4. Oil air separation pressure drop

The air dissolved in the oil escapes and creates pores, which affects the normal operation of the hydraulic system of the hollow blow molding machine.

Extrusion blow molding machine manufacturer The harm caused by excessive temperature rise of the blow molding machine mainly affects the hydraulic system and components of the hollow blow molding machine. However, the hydraulic system is also an important component system of the hollow blow molding machine. The normal operation of the Extrusion blow molding machine manufacturer blow molding machine is inseparable from the cooperation of any system and components.