Plastic mold purchase can not ignore the 5 requirements

Plastic mold is an abbreviation for a combination mold used for compression molding, extrusion, injection, blow molding, and low foam molding. Mold convex, concave mold and auxiliary molding systems of coordinated changes can process a series of plastic parts of different shapes and different scales. In order to satisfy the needs of the molded parts, we need to pay attention to some matters when selecting plastic molds and put forward the corresponding needs. Here are 5 requirements for selecting a more suitable plastic mold.

White base mold

1, high corrosion resistance of many resins and additives to the cavity appearance has a corrosive effect, this corrosion makes the cavity appearance of metal dissolution corrosion, fall off, the appearance of bad conditions, and plastic parts quality deterioration. Therefore, it is best to use corrosion-resistant steel, or the cavity exterior chromium plating, cyanide nickel treatment.

2, good wear resistance plastic appearance of the gloss and precision and plastic mold cavity appearance of the wear resistance has a direct relationship, especially some plastics with glass fiber, inorganic fillers, and some pigments, they and the plastic melt together in the runner, mold cavity high-speed flow, the cavity appearance of the conflict is very large if the material is not wear-resistant, will soon wear so that the quality of plastic parts are damaged.

3, outstanding scale stability in plastic molding, plastic mold cavity temperature to reach 300 ℃ or more. For this reason, it is best to use the appropriate tempering treatment tool steel (heat treatment steel). Otherwise, it will cause a change in the microstructure of the material and then cause the plastic mold scale changes.

4, easy to process mold parts are mostly made of metal materials, and some of the structure of the shape is also very messy, in order to shorten the production cycle, improve power, require mold material easy to process into the shape and precision required by the drawings.

5, good polishing performance plastic parts usually require outstanding luster and appearance state, so the cavity surface roughness is very small so that the cavity surface is necessary for surface processing, such as polishing, grinding, etc.. Therefore, the steel selected should not contain rough impurities and porosity, etc.