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breakdown pass (【技】用于减小钢锭或钢坯的断面,为成品孔型提供合适的坯料。常用孔型有箱形、菱形、方形、三角形、六角形、椭圆形及圆形等。亦称开坯孔型。); breaking down pass; cogging-down pass; cogging pass; pinch pass; reducing pass; breaking-down pass; first pass | |||
bloom pass | |||
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cogging-down pass | |||
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cogging-down pass | |||
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pinch pass |
开 坯 孔型 : 4 phrases in 1 subject |
Metallurgy | 4 |