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.
针对45钢件的淬火开裂现象，从理论和实践两方面分析了产生淬火开裂的原因，提出防止45钢件淬火开裂的方法和工艺措施。该工艺在实践中被证明是切实可行的。
Directed 45 steel part's crack under quenching process, the reason has been analyzed practically and theoretically, and measures 45 steel parts from cracking, which have been proved to be feasible.
针对45钢件的淬火开裂现象，从理论和实践两方面分析了产生淬火开裂的原因，提出防止45钢件淬火开裂的方法和工艺措施。该工艺在实践中被证明是切实可行的。
Directed 45 steel part's crack under quenching process, the reason has been analyzed practically and theoretically, and measures 45 steel parts from cracking, which have been proved to be feasible.
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