How to prevent weld marks during injection molding of metal inserts

In the previous article, the author has talked about several undesirable situations that may be caused by injection molding of metal inserts and the corresponding solutions. This article continues to introduce other undesirable problems, such as weld marks. Under normal circumstances, the weld mark mainly affects the appearance, electroplating and painting, and if it is serious, it will also seriously affect the strength of the finished injection molded part. This requires us to understand how to prevent this problem. 1. Adjust molding conditions to improve fluidity. For example, increase the resin temperature, increase the mold temperature, increase the injection pressure and speed, etc.; 2. Adding an exhaust groove, and setting a push rod at the place where the weld mark is generated is also conducive to exhaust; 3. Minimize the use of release agent; 4 , Set the process flash as the place where the weld mark is generated, and then cut and remove it after forming; 5. If it only affects the appearance, you can change the firing position to change the position of the weld mark, or treat the place where the weld mark is generated For dark glossy surface, etc., to be modified. [Related recommendation] Learn more: 精の corporate culture Learn more: Continuous improvement and innovation are the key factors for the survival of stamping companies Learn more: Why most stamping factories are unwilling to quote foreign trade companies