| 发动机12.9级连杆螺栓的材料与工艺 |
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| 引用本文： | 高伟.发动机12.9级连杆螺栓的材料与工艺[J].汽车技术,2005(11):28-30. |
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| 作者姓名： | 高伟 |
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| 作者单位： | 第一汽车集团公司技术中心 |
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| 摘 要： | 为实现12．9级螺栓的国产化，以发动机连杆螺栓为对象，研究了12．9连杆螺栓的材料和工艺。研究结果表明，35CrMo钢是发动机12．9级连杆螺栓的优良材料，可满足12．9级螺栓材料的力学性能要求。对12．9级连杆螺栓采取氮气保护热处理、杆部缩细冷镦、热处理后滚丝是可行的工艺方法，可生产出高质量、高精度螺栓，而且满足批量生产要求。
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| 关 键 词： | 发动机 连杆螺栓 材料 工艺 |
| 文章编号： | 1000-3703(2005)11-0028-03 |
| 收稿时间： | 2005-08-16 |
| 修稿时间： | 2005-08-16 |
Material and Process of the 12.9-Grade Con Rod Bolts |
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| Gao Wei.Material and Process of the 12.9-Grade Con Rod Bolts[J].Automobile Technology,2005(11):28-30. |
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| Authors: | Gao Wei |
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| Institution: | FAW R&D Center |
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| Abstract: | In order to localize the 12.9-grade bolts,with the engine con rod bolts as the objective, the material and process of the 12.9-grade con rod bolts are studied.It is shown that 35CrMo steel is the superior material for the con rod bolts,which meets the mechanical requirements of 12.9-grade bolts.Nitrogen heat treatment,thinning and cold heading of body of bolt and thread rolling after heat treatment are all effective processes to produce high quality,high accuracy 12.9- grade bolts and they meet requirements of mass production. |
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| Keywords: | Engine Con rod bolts Material Process |
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