近期在对公司内有些子公司或专业厂送检的感应淬火零件,进行感应淬火质量诸如硬度、层深、淬火范围、组织、断裂失效分析等项目检测时,发现因技术图纸标注存在严重的问题,如轴类零件淬硬层深及淬火区域未标注,感应淬火层深太浅、多台阶轴类零件中两轴颈之间的台阶处及截面变化处未要求感应淬火强化 Recently in some of the company’s subsidiaries or professional factory inspection of induction hardening parts, induction hardening quality, such as hardness, depth, quenching range, microstructure, fracture failure analysis of the project test and found that technical drawings have serious problems , Such as shaft parts hardened layer and the quenching area is not marked, the induction hardening layer is too shallow, multi-step shaft parts between the two journals neck and cross-section changes do not require induction hardening