Why should the mould be polishing?
Why should the mould be polishing?
Extrusion molds are mostly surface nitrided
and hardened, which can prolong the service life of the mold and increase the
hardness of the mold surface.
● Reduce frictional resistance
Mold polishing mainly increases the flow of
plastic and reduces frictional resistance.
If polishing is used at the beginning of
contact with the plastic area on the surface of the feed mold, the frictional
resistance between the plastic and the mold surface can be reduced, the flow
distance can be further extended, and the yield can be improved.
● The product surface is smooth and good
After the polishing, the surface of the
mold and the surface of the plastic product are cooled, and the finished
product surface can have the same corresponding smooth quality.
●Increase mold life
The well-polished and timed mold tempering
or homogenizing heat treatment molds can improve the long-term production of
plastic, and repeatedly flow over the surface of the mold, just like the
sandpaper-like friction and constant repetitive shrinkage and thermal expansion
production, easy to produce stress or thermal cracks, so that plastic
infiltration Micro-cracking inside the mold
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