最新国产午夜精品视频不卡-精品偷自拍另类在线观看-久久性感视频-国产亚洲国产bv网站在线-亚洲精品成人7777在线观看-国内精品欧美久久精品-日韩福利午夜-国内精品久久久久久久星辰影视-激情五月在线观看-国产一在线精品一区在线观看-九九九九免费视频-国产中出在线观看-91精品视频免费-边摸边吃奶边做在线视频免费观看-91国产高清线在线观看不卡-av激情一区二区三区-亚洲欧洲在线播放-日本一区二区在线看-国产91免费观看-免费鲁丝片一级在线观看-九九精品热线免费观看6-国产+白浆+高潮-网色网站-伊人国产视频-欧美日韩国产电影一区二区-99精品成人在线视频-五月婷婷色视频-免播放器av少妇影院-日本一区二区三区视频在线观看-91高清国产在线观看

With the continuous development of industry, we can know the rapid development of various industries, then when used, it may cause certain damage, it may be caused when we use it, or it may be because of processing Caused, so how to prevent mold damage? Let's take a look below!

1. Good casting structure design

The wall thickness of the casting is as uniform as possible to avoid the occurrence of thermal joints to reduce the thermal fatigue caused by the local heat concentration of the mold. There should be proper rounded corners at the corners of the casting to avoid stress caused by sharp corners on the mold.

 

2. Reasonable mold structure design

 1) The components in the mold should have sufficient rigidity and strength to withstand the pressure without deformation. The mold wall thickness must be sufficient to reduce deformation.

2) The pouring system design minimizes impact and erosion on the core.

3) Correctly select the tolerance fit and surface roughness of each component.

4) Maintain mold thermal balance.

 

3. Standard heat treatment process

Through heat treatment, the metallographic structure of the material can be changed to ensure the necessary strength, hardness, dimensional stability at high temperature, thermal fatigue resistance and material cutting performance.

 The correct heat treatment process will get the best mold performance, and the performance of the steel is controlled by the quenching temperature and time, cooling rate and tempering temperature.