Failure Analysis of 34CrMoA Bolt in Water Cooler
摘 要
经对断裂的常减压水冷器小浮头螺栓的宏观和微观的观察和分析,结果表明:螺栓材料为35CrMoA低合金钢,经过淬火和低温回火处理,强度达1 000 MPa,HRC达36,对氢致开裂(HIC)敏感,螺栓属HIC脆性断裂.
Abstract
The bolt in oil water cooler of refinery vacuum tower fractured after operation for twenty days,by means of macro and microanalysis the results showed that the fracture was caused by hydrogen induce cracking(HIC).The cracking mechanism was discussed and proposal was mentioned for protection of similar failure.
中图分类号 TG172.9
所属栏目 失效分析
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收稿日期 2007/9/20
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引用该论文: ZHANG Xian-jiang,ZHENG Wen-long. Failure Analysis of 34CrMoA Bolt in Water Cooler[J]. Corrosion & Protection, 2008, 29(3): 160~162
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