Tips of Selection of Plastic Injection Mold Materials
Injection mold is an important process equipment for producing all kinds of industrial products, a complete set of molds has various parts. The positions and functions of each part in the mould are different, and the performance requirements of the materials are different. Reasonable selection of materials for mold parts is the basis for producing high quality molds, improving efficiency and reducing costs. Creatingway has much experience in injection mold and provided various plastic projects for our global customers, we would like to support more and enlarge our injection mold service. Here let’s talk something about the basic requirements of plastic injection mold materials first.
Below are some requirements of plastic injection mold materials
Good mechanical processing performance
Good machining performance is necessary for high speed machining. Good machining performance can extend the life of machining tool, improve the cutting performance and reduce the surface roughness to obtain the high precision die parts.
Sufficient surface hardness and abrasion resistance
The surface roughness and dimension accuracy of plastic products and the service life of mold are directly related to the roughness, hardness and abrasion resistance of the mould surface. Therefore, the molding surface of plastic injection mould is required to have sufficient hardness, and its quenching hardness should not be lower than 55 HRC, so as to obtain high abrasion resistance and prolong the mold service life.
Good polishing performance
In order to obtain the plastic products of high gloss surface, the surface roughness of the parts is required to be small. Therefore, the surface roughness of the molding parts is required to be polished to reduce the surface roughness value. In order to ensure the polishing effect, the mould materials should not have the pores, impurities and other defects.
Good heat treatment manufacturability
Mold materials often rely on heat treatment to achieve the necessary hardness, which requires good hardening and hardenability. Plastic injection mold parts shape is complex, it’s difficult even could not processed after quenching process, so the mould parts should choose materials with small deformation of heat treatment, to reduce the processing capacity after heat treatment.
Good corrosion resistance
Some plastic and its additives in molding would produce corrosive gas, so the selection of mold material should have certain corrosion resistance, also can use the methods such as nickel, chromium plating to improve corrosion resistance on the surface of the mold cavity.
Injection molding method is one of the fast speed, high efficiency method to meet your large project demand. Contact Creatingway to offer more volume production with high quality parts and short lead time.
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