Long term high temperatures can indeed cause to wear and tear of injection machine components, based on the various negative effects that injection machines face when operating in high-temperature environments.
Firstly, excessively high temperatures in injection machines can cause molten plastic to overheat, cause to decomposition, oxidation, or burning. This not only affects the appearance and physical properties of the product, but may also produce harmful substances that can corrode or contaminate machine components. At the same time, high temperature environments can accelerate the wear of mechanical components inside injection machines, as high temperatures can alter the viscosity and performance of lubricating oil, cause to a decrease in lubrication effectiveness and increasing friction and wear between components.
Secondly, excessive temperature rise in injection machines can also have a serious impact on the hydraulic system. Moving parts with different coefficients of thermal expansion in hydraulic components may get stuck due to reduced clearance, causing malfunction and affecting the transmission accuracy and component quality of the hydraulic system. In addition, high temperatures can reduce the viscosity of oil, increase leakage, lower the volumetric efficiency of pumps, and overall system efficiency. The decrease in viscosity of oil can cause the oil film of moving parts such as slide valves to become thinner and cut, increasing frictional resistance and further exacerbating wear.
Furthermore, excessive temperature rise in injection machines can cause deformation of rubber seals, accelerate aging and failure, reduce sealing performance and service life, and cause to leakage. This not only affects the normal operation of the machine, but may also cause machine malfunctions or safety accidents due to leaks.
Finally, long-term high temperatures can accelerate the oxidation and deterioration of the oil inside the injection machine, resulting in the precipitation of harmful substances such as asphalt. These substances can block the damping small holes and gap type valve ports, cause to serious consequences such as pressure valve jamming, metal pipeline elongation and bending, or even rupture.