slgsmjk 发表于 2021-6-22 18:26:02

60si2mn的金相请老师们看下哪里做的不好

http://www.rclbbs.com/data/attachment/album/202106/22/181449e18b5whtnuwb0365.jpghttp://www.rclbbs.com/data/attachment/album/202106/22/181315s1l6l6ndhlw1nfha.jpg

热处理老马 发表于 2021-6-27 10:17:26

:):):):):):);P;P:handshake
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