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dong -75/54 che jia mao ding de gai jin
Author(s): ZHAO Lian
Pages: 30
Year: 1992
Issue:
6
Journal: Farm Machinery
Keyword: 锻造工序;
Abstract: <正>30多年来,各修造厂在修理东方红-75/54拖拉机车架时,采用的铆钉一直是无头的。这种铆钉是用φ19毫米的圆钢锻造制成的。近几年生产的钢材规格大多是偶数尺寸的,奇数尺寸的很少,修造厂经常因待料影响生产。我们通过实验,改用φ20~φ22毫米的圆钢锻制圆头铆钉。这样不但省去了锻造工序,而且
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