to define the material and quality requirements for forged steel pinion blanks supplied in the qnnealed condition,for the manufacture of gas carburised mill pinions and other pinion shafts over 350mm diameter at the largest section。
给定的图纸，齿轮轴，五段，最大直径800多，最小的也超过350，这个渗碳层深我没搞明白，求解？
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发表于 2009-7-23 23:21:49
