| 轿车接地螺钉的断裂原因及预防 |
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| 引用本文： | 丁裕青,崔厚学,许世亮,宋莹真.轿车接地螺钉的断裂原因及预防[J].热处理,2013(6):69-71. |
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| 作者姓名： | 丁裕青 崔厚学 许世亮 宋莹真 |
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| 作者单位： | [1]神龙汽车有限公司质量部,湖北武汉430056 [2]东风汽车有限公司制造规划总部,湖北武汉430056 [3]台湾春雨集团上海统盛贸易有限公司（武汉）,湖北武汉430023 |
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| 摘 要： | 某型轿车10B21钢接地螺钉发生小批量断裂。检测了断裂螺钉的尺寸和力学性能，对断口进行了扫描电镜分析．结果表明，螺钉断裂是氢脆所致、提出了加强生产管理，改造去氢设备及改进去氢处理时的装料方式等预防措施。
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| 关 键 词： | 接地螺钉 氢脆 去氢 |
Auto Earth Screw Fracture and Precautions |
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| DING Yuqing,CUI Houxue,XU Shiliang,SONG Yingzhen.Auto Earth Screw Fracture and Precautions[J].Heat Treatment,2013(6):69-71. |
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| Authors: | DING Yuqing CUI Houxue XU Shiliang SONG Yingzhen |
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| Affiliation: | 1. Dongfeng Peugeot Citroen Automobile Co., l,td., Wuhan 430056, Hubei China; 2. Dongfeng Motor Co., l,td., Wuhan 430056, Hubei China; 3. Shanghai Tongsheng Commercial Co., Ltd., Taiwan Chunyu Group,Wuhan 430023, Hubei China) |
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| Abstract: | The earth screw of some type of auto, made of 10B21 steel, broke in small numbers. The size and mechanical properties of failed screws were measured, and thefracture was analyzed by SEM. The results indicate that the screw thilure is attributed to hydrogen brittleness. The precautions were put forward, such as more effective production management, reformation of dehydrogenation unit, improvement on loading during hydrogenizing, etc. |
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| Keywords: | earth screw hydrogen brittleness hydrogenizing |
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