Sep 17, 2021
1, Adjustment content
After the die casting mold manufacturing is completed, it should be adjusted after the mold test to choose the correct die casting conditions in order to achieve stable die casting of qualified castings.
Before the mold test, mold test personnel should do die casting with alloy materials for inspection, to understand the characteristics of alloy materials and die casting characteristics; should also understand the mold structure, die casting machine performance, die casting conditions, and operating methods.
The correct choice of die casting formation conditions is the key to die test adjustment. Often encountered even if the mold design and manufacturing are correct, due to improper selection of die casting forming conditions, the same can not press qualified castings. On the contrary, in some cases, can be used to adjust the die casting forming conditions, to overcome the shortcomings of the mold, press out the qualified castings. For this reason, mold test personnel must be familiar with the role of the die casting molding conditions and the relationship between, mold action principles, in order to correctly select and reasonably adjust the die casting molding conditions.
Die casting molding conditions of the adjustment of the following points.
1) Material melting temperature, die temperature, and solution temperature during die casting.
2) The injection pressure of the die casting machine, clamping force, mold opening force, and the required injection ratio pressure, injection speed size, etc. according to the condition of the parts.
3) The condition of the die-cast product should be trimmed in order to get a perfect part.
2, Trial mold process
Mold test is the last part of the mold manufacturing, is in the die casting machine on the die casting mold molding effect of the field inspection process. The purpose of the mold test is not only to test the mold design and manufacturing but also to seek the best molding process conditions for formal production.
The process of mold trial is divided into three stages: mold loading, mold trial, and adjustment.
1) Mold assembly
Mold assembly includes pre-inspection, mold installation, and adjustment, etc.
2) Mold test
The main contents of mold trial are as follows: ① mold preheating ② the pouring temperature ③ select the ratio of pressure injection ④ to select the speed of pressure injection ⑤ to determine the filling time
3, Adjustment method
Possible defects, causes, and adjustment methods in die casting mold trial