通过理化检测，对铆螺钢在冷镦时出现开裂的原因进行了分析。
These inclusions resulted in cracking of the cold forging steel during the cold heading process.
通过理化检测，对铆螺钢在冷镦时出现开裂的原因进行了分析。
The reason of cracking for the cold forging steal was analyzed by physical and chemical tests.
通过对铆螺钢的成分与组织检验，对铆螺钢在冷镦时出现开裂现象的原因进行了分析。
The reason of cracking phenomenon occurring of the cold forging steel was analyzed by the composition and microstructure tests.
通过对铆螺钢的成分与组织检验，对铆螺钢在冷镦时出现开裂现象的原因进行了分析。
The reason of cracking phenomenon occurring of the cold forging steel was analyzed by the composition and microstructure tests.
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