Let's take a look at what are the factors that lead to cracking in the processing of products?


First of all, from different angles to look at the problem of product cracking, whether from the injection molding process, or from the mold itself. From the glue itself to judge the cause of cracking products. Some slight can be seen at a glance, more serious need to open the mold and check the injection molding machine to find the problem.


From the perspective of injection molding, the following aspects may be the factors that lead to cracking of the product. We should know that the pressure of injection molding is too large, the speed is too fast, the more the material is flushed, the injection molding and the pressure holding time is too long, which will cause too much internal stress and lead to cracking. This is the problem of internal stress. Adjusting mold opening speed and pressure can effectively prevent product cracking caused by demoulding caused by fast drawing parts. Proper adjustment of speed can prevent cracking. In the process of injection molding, the temperature of the mold should be properly adjusted to make the product easy to demoulding. Properly reduce the material temperature, can also prevent decomposition. Different mold parts should be clearly distributed. Also need to prevent due to weld marks, plastic material degradation and product cracking factors, these are injection molding processing may cause several factors of product cracking. We should also pay attention to the production process, and try our best to avoid the occurrence of these cracking conditions.


From the perspective of the injection mold, the mold may have problems divided into the following points. Stress is prone to dry cracking, not only know but also understand how to effectively avoid cracking. Mold injection should be balanced, such as the number of ejection rods, cross-sectional area should be sufficient, and demoulding Angle should be reasonably designed. The cavity surface should be smooth enough. In this way, the residual stress concentration of ejection caused by external force can be effectively prevented from cracking. As long as we pay attention to the details in production, we can effectively avoid stress problems. Secondly, the product structure can not be designed too thin to avoid sharp corners and chamfering resulting in stress concentration.


These are several factors that may lead to cracking of injection molding products. If you have anything to add, you can also contact us at any time.