来源：http://www.jnhjgs.cn 发布时间：2021-02-22 15:47:50 点击：
Shandong Aluminum alloy die casting manufacturers in the official website to provide you with solutions, today's main explanation is the wrong type and pockmarked problem.
There are four types of malocclusion: dislocation, misalignment, stagger seam and stagger thread. The main performance of malocclusion is the relative displacement of the die casting on the parting surface, that is, the malocclusion of the thread. Aluminum alloy die-casting manufacturers explore the reasons, which can be summarized into three points: the displacement of the insert used in processing; the wear of the guide part of the die; the manufacturing error of the insert of the two half dies; in order to avoid the wrong type, the manufacturer needs to adjust or repair the insert in time, fasten and eliminate the error, and replace the guide post and guide sleeve in time.
Pockmarked surface is also a quality problem in the production of aluminum alloy castings. It is also called pockmarked surface. It is a small pockmarked distribution area formed on the surface of castings under similar under pressure conditions due to too low mold temperature or alloy liquid temperature during mold filling. The reason of pitted surface may be that the thickness of inner gate is too small, or the metal is dispersed into dense droplets when filling by aluminum alloy die casting factory, which impacts the mold wall at high speed. The corresponding solution is to adjust the thickness of the inner gate properly, or design the gating system correctly before production, try to avoid the splashing of liquid metal, improve the exhaust conditions, avoid the liquid metal involved in too much gas, reduce the speed of the inner gate, and increase the mold temperature.