9173| 18
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求助工艺,老板接的单,一看有点懵 |
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点评
淬火后回火其实应该算是一道(正常淬火包括回火处理),但是要求的硬度偏高,40Cr一般52-60HRC
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点评
明白人
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点评
应该干不出这么窄的硬度范围(除非运气好)
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