99久久精品国产一区二区三区,欧美黑人又大又粗XXXXX,WWW国产精品内射,男s严厉调教女m小说

歡迎進(jìn)入深圳市錦鴻宇實(shí)業(yè)有限公司官網(wǎng)!
News
NewsNews

How to prevent mold damage?

時(shí)間:2020-06-09瀏覽次數(shù):6104
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.

服務(wù)熱線:13631565136
手機(jī):18926579610
電話:0755-26740010
郵箱:senyuanmoju@126.com
地址:廣東省深圳市寶安區(qū)石巖街道水田工業(yè)區(qū)寶石東路123號(hào)7棟1樓

掃一掃關(guān)注我們

扒开她粉嫩的小缝的A片| 香港奇案之吸血贵利王| 中国A级毛片免费观看| 男男调教羞耻H扒开鞕臀海棠| 校花夹震蛋上课自慰爽死| 狠狠狠色丁香婷婷综合久久AV| 久久久久亚洲AV无码网站| 交换俱乐部娇妻奶呻吟啊视频| 亚洲av无码国产精品麻豆天美| 国产精品99亚发布| 毛片免费看| 韩国午夜理伦三级在线观看中文版| 男男GAYGAY无套GAY无套| 艳妇乳肉豪妇荡乳AV无码福利| 最近最新手机中文大全10| 国产精品久久久久乳精品爆| 国产精品毛片AV一区二区三区| 国产在线视频| 日本老熟妇maturebbw| 末成年女A片一区二区| 亚洲 中文字幕 日韩 无码| 久久桃花综合桃花七七网| 青楼男妓H高潮啊哈男男| 第一次进去丫头的身体怎么办| 在线永久看片免费的视频| 曰本女人与公拘交酡视频| 久久婷婷成人综合色| 国产97色在线 | 日韩| 日韩电影免费在线观看网址| 又硬又粗进去好爽A片天美APP| gogogo免费高清日本| 日本片在线看的免费网站| BL道具PLAY珠串震珠强迫 | 学生娇小嫩白紧小疼叫| 性饥渴老太XXXXXHD| 免费漫无遮挡画大全免费漫画| 精品丝袜人妻久久久久久| 仙踪林国精产品视频| 亲嘴揉胸口激烈视频| 亚洲制服师生 中文字幕| 国产一性一交一伦一A片|