通过对回转齿轮淬火开裂原因的分析，列举了原材料铸造不合格存在的弊端。
This paper analyzed the cause of the reverse gears's cracking during the quenching process, and recited the damages of using unqualified raw materials in founding.
通过金相检验和扫描电镜等检测手段对齿轮淬火畸变与开裂进行了分析。
The quenching distortion and crack of the gears were analyzed by means of metallograph and SEM.
对淬火开裂的S45 C钢零件进行了化学成分、金相组织、断口分析及硬度检测。
The chemical composition, microstructure, fracture morphology and hardness of cracked S45C steel parts were tested and analyzed.
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