对开裂杯形螺母的力学性能和化学成分进行了检验分析，并进行了工艺试验。结果表明，毛坯尺寸偏短是造成开裂的主要原因。
Through mechanical test and chemical analysis and technological experiment of the cracked cap nut, it was concluded that the short size of nut blank caused surface crack.
对开裂杯形螺母的力学性能和化学成分进行了检验分析，并进行了工艺试验。结果表明，毛坯尺寸偏短是造成开裂的主要原因。
Through mechanical test and chemical analysis and technological experiment of the cracked cap nut, it was concluded that the short size of nut blank caused surface crack.
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