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Surface treatment and service life of injection molding machine screw
We have emphasized many times that the screw barrel is the most critical and soul part of the injection molding machine. During the injection molding process, plastic raw materials enter the barrel of the injection molding machine from the tail. The screw rotates in the barrel, extrudes and pushes the plastic particles and their fillers, blends and plasticizes in the advance, and injects the screw head into the mold cavity. At this time, the barrel and screw bear certain high temperature and high pressure of different plastics, and the working temperature of the screw of the injection molding machine is also different.
We have emphasized many times that the screw barrel is the most critical and soul part of the injection molding machine. During the injection molding process, plastic raw materials enter the barrel of the injection molding machine from the tail. The screw rotates in the barrel, extrudes and pushes the plastic particles and their fillers, blends and plasticizes in the advance, and injects the screw head into the mold cavity. At this time, the barrel and screw bear certain high temperature and high pressure of different plastics, and the working temperature of the screw of the injection molding machine is also different.
Screw barrel is often scrapped due to excessive clearance caused by wear and can not be squeezed or injected normally. The wear increases the clearance between the cylinders of the screw edging machine, which leads to the reduction of the melting rate and the pumping capacity, resulting in uneven material temperature and pressure fluctuations, resulting in a decline in product quality, a reduction in productivity and an increase in energy consumption. Compared with the barrel, the screw is more prone to damage and failure.
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