In general, there will be a variety of errors in precision parts processing or precision mold processing, such as shrinkage, dents are a very common phenomenon, if there is always a dent in the processing of parts or molds, it is necessary to pay attention to these, the following precision parts processing manufacturers will tell you how to prevent the occurrence of dents in processing.

First, the situation of precision parts processing dents

1. When precision parts are processed, if the cooling time is short, there will be deformation of parts;

2. If there is insufficient pressure inside the precision mold processing, it is easy to cause deformation of the mold or parts;

3. The thickness of each part of the product is different, in this case, the overall treatment: reduce the temperature of the barrel and the mold, force cooling at the dent, fill the flow edge at the dent, and control the thickness difference of the design product;

4. Because the place is too coarse and large, there is a depression. Method: By increasing stress, increasing stay time, depression can be reduced or even eliminated, depending on their depression level, the manufacturer, and whether they are willing (staying too long will reduce productivity).

In summary, the dent that can be produced in the development process of plastic mold injection molding is mainly solved as follows:

1. Improve energy injection: pressure, speed, time and amount, and increase back pressure to fill the mold;

2. Make the temperature flow of the material smoother during processing, reduce the shrinkage, and appropriately increase the mold temperature;

3. The gate is arranged on the thick part of the workpiece to improve the flow condition of the nozzle, runner and gate and reduce the consumption of press material;

4. Improve mold exhaust.