The injection molding machine is the use of plastic processing machinery industry's largest production, not only have a direct injection molding machine a large number of products available, key equipment and composition of injection stretch blow moulding. In the injection process, many enterprises will find the injection molding machine temperature rise phenomenon is too high, and in fact, injection molding machinery and equipment is very harmful, specifically will bring the following five hazards:
One of the hazards: lead to mechanical deformation. The difference of thermal expansion coefficient of motion components of hydraulic components because of its smaller and stuck with probation, causing failure, affect the transmission precision of hydraulic system, resulting in poor quality components.
Harm two: cause the oil viscosity decreased. The temperature of the injection molding machine that is too high will lead to oil viscosity decrease, leakage increases, the efficiency of the pump's volumetric efficiency and the entire system will be significantly decreased. Because the oil viscosity is reduced, the oil film spool and other mobile elements and thinning is cut, the friction resistance increases, resulting in increased wear.
Hazard three: lead to rubber seal shape change. Injection molding machine temperature too high will lead to rubber seal deformation, accelerate aging failure, reduce sealing performance and lead to use time, cause leakage.
Harm four: accelerating oil oxidation. Injection molding machine temperature rise too high will accelerate oil oxidation deterioration, precipitation asphalt material, reduce hydraulic oil lead time. Precipitation blockage damping orifice and slit valve port, resulting in pressure valve stuck but not action, metal pipe elongation and bending, and even rupture.
Hazard five: lead to component quality decline. Injection molding machine temperature rise too high will lead to lower quality work elements, dissolved air escapes, oil induced cavitation occurs, res