汽车拖拉机用钢--qsf999的安全生产小屋

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汽车拖拉机用钢 | 2012-3-9 16:13:00

汽车拖拉机用钢

汽车和拖拉机零件都承受动载荷。由于发动机功率的不断增大，热载荷增加，设计上要尽量降低单位功率的金属材料消耗量等。对不同零部件用钢有不同的性能要求。按其工艺特点和用途可大致分为：（1）渗碳钢，（2）调质钢，（3）高、中频感应加热淬水用钢，（4）弹簧钢，（5）冷冲压用钢，（6）冷镦、冷挤压用钢，（7）易切结构钢，（8）气阀用钢等。

By:qsf999 | 阅读全文 | 回复(15) | 引用通告 | 编辑

Re:在漫画中识别身边的违章 | 2017-2-17 22:43:58

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By:fkmqu(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章 | 2016-10-23 15:42:21

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Re:在漫画中识别身边的违章 | 2016-10-22 19:22:41

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Re:在漫画中识别身边的违章 | 2016-10-22 13:24:47

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Re:在漫画中识别身边的违章 | 2016-10-22 2:39:14

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Re:在漫画中识别身边的违章 | 2016-10-21 12:17:42

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Re:在漫画中识别身边的违章 | 2016-10-20 7:27:06

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Re:在漫画中识别身边的违章 | 2016-10-16 6:31:54

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By:dinpl(游客) | 个人主页 | 引用 | 返回 | 删除 | 回复

Re:在漫画中识别身边的违章 | 2016-10-8 14:38:38

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原创 | 2016-9-30 15:52:09

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原创 | 2016-9-28 21:09:13

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原创 | 2016-9-6 21:34:52

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