Some tips about choosing plastic molds

As you all know,plastic mold is the abbreviation of a combined mold,which covers compression molding, extrusion molding, injection molding, blow molding and low foam molding. The coordinated changes of the mold convex, concave mold and auxiliary molding system,we can process a series of plastic parts with different shapes and sizes. In order to meet the demand of molding parts, here are some tips to help you choose a more suitable plastic mold:

ABS Car lamp holder (1)


1.Influenced less by heat treatment

In order to improve the hardness and abrasion-resistance, the plastic mold should be heat treated generally , but this treatment should change a bit for the size. Therefore, it is best to use pre-hardened steel that can be machined.


2.Easy to process

Die parts are mostly made of metal materials, and some of them have complex structures and shapes. In order to shorten the production cycle and improve efficiency, the mold materials should be easy to process into the shape and precision required by the drawings.


3.High corrosion resistance

Many resins and additives may corrode the surface of the cavity,which will make the quality of plastic parts worse. Therefore, it had better use the corrosion-resistant steel, or plate chrome,cymbal,nickel on the cavity surface.


4.Good stability

During plastic molding, the temperature of the plastic mold cavity should reach over 300℃. For this reason, it is best to choose tool steel (heat-treated steel) that has been properly tempered. Otherwise, it will cause changes in the micro structure of the material, and lead to the change of the plastic mold.


Post time: Apr-06-2022


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