内蒙古11选5走势图

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液压拉床拉削前的准备

文章出处:滕州市高地机床有限公司点击:903发表时间:2019/3/7 9:16:56

工件硬度在HB180~210之间时,经拉削后能得到较好的表面质量,如低于HB170或高于HB240JF,都必须进行预先热处理,改变硬度,改善切削性能。

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