BMW 3 Series Door Handle Plastic Mould

BMW 3 Series Door Handle Plastic MouldProblems with injection molds should be checked from hereIf you do not pay attention to injection molds, various problems will always occur, such as cracks, inclu

BMW 3 Series Door Handle Plastic Mould


BMW 3 Series Door Handle Plastic Mould


Problems with injection molds should be checked from here


If you do not pay attention to injection molds, various problems will always occur, such as cracks, including surface filiform cracks, micro-cracks, cracks, and due to parts sticking, runner sticking or traumatic crisis. Cracking time and application deformation cracking. There are several main reasons:


1. Processing aspects:


(1) Excessive pressure, too fast processing speed, and too much punching when processing the mold will cause the internal pressure to be too large and cause rupture.


(2) Adjusting the speed and pressure of mold opening can prevent the enterprise from pulling the parts quickly and causing the influence of mold release and cracking.


(3) Properly increase the mold temperature to make the parts easy to demold, and appropriately reduce the material temperature to prevent rot.


(4) Prevent plastic degradation caused by fusion marks and reduced mechanical strength.


(5) A release agent can be used according to the situation, and excessive impurities attached to the surface of the mold should be removed.


(6) Annealing heat treatment immediately after forming can eliminate the residual stress in the workpiece and reduce the formation of cracks.




2. Material aspect:

(1) The recycled material is too high, which leads to the low strength of the mold, leading to quality problems.

(2) Excessive humidity causes a chemical reaction between the material and water vapor, resulting in too low mold strength.

(3) Poor quality of the material itself, poor processing quality, or contamination will cause the material to crack.