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自來水井蓋

自來水井蓋：良好的鑄造性能、良好的減振性、良好的切削加工性能、低的缺口敏感性 　　

灰鑄鐵井蓋的熱處理： 　　

1.自來水井蓋消除內應力退火 　　

2.自來水井蓋改善切削加工性退火 　　

3.自來水井蓋表面淬火

自來水井蓋.jpg

性色A∨人人爽网站
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