Analysis of the causes of dents and bleaching in the processing of Guangzhou Ideal plastic mold
Do you have any understanding of injection mold processing, and many people may basically have no understanding. In fact, in recent years, the development of injection mold processing industry in China is relatively good, and the space for the development of injection mold processing products is also relatively large, which has changed the processing method and brought great convenience to production. Therefore, people may not be exposed to it, but there is still a need to understand some of its knowledge, at least not to appear insular. Next, I will take you to understand the relevant knowledge of Guangzhou Ideal plastic injection mold processing in the form of questions and answers.
1. What factors should be considered when choosing the parting surface of Guangzhou Ideal plastic injection mold? The parting surface is selected mainly considering the convenience of draft and core pulling.
2. What are the basic components of Guangzhou Ideal plastic injection mold? The basic components of Guangzhou Ideal plastic injection mold are: mold base, mold cavity, mold core, pressure plate, positioning guide column, and water cooling system components.
3. What are the commonly used materials for Guangzhou Adil plastic injection mold mold frame? The commonly used materials of the mold base are: S55, S45, S50, etc
4. What heat treatment process does Guangzhou Ideal plastic injection mold generally need to go through? Injection mold processing generally needs to go through heat treatment processes such as quenching, tempering and nitriding and so on.
5. What is a release agent? What are the commonly used release agents? What is the role? The release agent is an oil agent coated on the surface of the mold, which can make the workpiece easy to draft off after glue. Commonly used mold release agents are dry, neutral, oily, the higher the oil, the greater the impact on the surface effect of the workpiece.
The operating conditions and failure modes of plastic molds are greatly related to the basic requirements of plastic injection molding processing parts for mold processing. First of all, the appearance requirements of plastic injection molding parts are high, and the requirements of injection molding products are higher, so the surface roughness value of the mold processing surface is very small, usually in R3 0. 2-0. 0255m or less, a small amount of wear or corrosion will make it ineffective. Therefore, it is necessary to polish from scratch in order to continue to use. Secondly, the dimensional accuracy and mutual matching accuracy of the molded parts processed by the mold are required to ensure that the seams are tightly fitted, and to prevent the moisture or the appearance of the plastic injection molded parts showing seam marks. Because if there are traces, it may also affect the subsequent normal use. Plastic mold processing plants also pay special attention to these aspects when producing such products.
When the plastic mold has dents, it is mainly caused by the following three reasons:
First, the mold cooling is insufficient, and the lack of cooling time will cause severe deformation;
Second, the lack of mold connotation pressure will also present this situation;
Third, the thickness of each part of the product is not the same, in the case of such a situation, the usual treatment method is to reduce the barrel temperature and mold temperature, forcibly cool the place where the dent occurs, make up the dent locally, and control the difference in the thickness of the planned product.
When plastic products are whitened, there are mainly the following reasons:
First, excessive fitting pressure;
Second, the mold release is poor. In this case, the overall treatment method is to pay attention to the slope of the demolding to meet when planning the plastic mold, and when manufacturing the mold, it is necessary to ensure that the cavity of the mold remains bright, and the real-time processing should immediately reduce the injection pressure.