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一、塑料对注射设备的磨损作用在加工热固性塑料,尤其是加工玻璃纤维增强的塑料时,设备经常发生磨损。在用压塑成型或传递成型方法加工时,主要是模具发生磨损。在用注射成型方法加工时,除模具外,螺杆和料筒等也发生磨损。注射机这些部件发生磨损,不仅造成经济上的损失,而且还会影响塑料制品的质量。磨损下来的金属微粒掺入塑料制品,会直接影响制品性能;如螺杆发生磨损,会使螺杆与料筒之间的间隙增大,在将已塑化了的塑料注入模具时,就会增加回流,结果造成剂量不精确,温度不均匀,从而影响塑料制品质量。
First, plastic wear on the role of injection equipment In the processing of thermosetting plastics, especially glass fiber reinforced plastic processing, the equipment often wear. In the use of compression molding or transfer molding processing, the main mold wear. In the injection molding method of processing, in addition to the mold, the screw and barrel wear occurs. These parts of the injection machine wear and tear, not only cause economic losses, but also affect the quality of plastic products. Worn metal particles into the plastic products, will have a direct impact on product performance; such as the occurrence of wear and tear of the screw, the screw will increase the gap between the cartridge, plasticized plastic injection mold will increase reflux , Resulting in inaccurate dose, uneven temperature, thus affecting the quality of plastic products.