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1-1. 2mm/ro6.2机较钢件冷却润滑为10-20%的乳化液,铜、铸件可用煤油冷却润滑。3较孔余量见表孔直径(mm) 80Co6.9 一般淬火件不做金相检验,但如工艺有规定,检验人员对本批淬火件质量发生怀疑、成批 产品变更工艺、新钢材、新工艺、新技术试验以及分析废品原因等等,应进行金相组织检验。7回火1将...