热煨弯管产生裂纹的原因分析
Analysis on the Reasons Causing Cracks in Hot Bends
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- 引用格式:
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曹晓燕,李天雷,罗光文.热煨弯管产生裂纹的原因分析[J].天然气与石油,2011,29(1):0.doi:
.Analysis on the Reasons Causing Cracks in Hot Bends[J].Natural Gas and Oil,2011,29(1):0.doi:
- DOI:
- 作者:
- 曹晓燕1,2 李天雷1,2 罗光文3
- 作者单位:
- 1.中国石油集团工程设计有限责任公司西南分公司,2.中国石油天然气集团公司石油管力学和环境行为重点实验室四川研究室,3.中国石油天然气股份有限公司西南油气田公司川东北高含硫项目部
- 关键词:
- 热煨弯管;裂纹;能谱分析;铜脆
Hot bend; Crack; Energy spectrum analysis; Copper brittleness
- 摘要:
- 针对某容器厂在热煨弯管推制过程产生裂纹现象,进行裂纹产生原因分析。通过对弯管的化学成分、金相组织以及裂纹开裂处的微区能谱分析,发现由于弯管局部存在富Cu相,易发生铜脆现象,弯管产生裂纹。
Analyzed are causes of crack formation in hot bend fabrication of certain vessel plant. Through analysis on chemical composition and microstructure in bends and micro-area energy spectrum analysis on their cracks,it is found that cracks in hot bends result from local rich Cu phase and copper brittleness in the hot bends. Therefore,their local rich Cu phase and copper brittleness shall be reduced as far as possible in order to reduce or avoid cracking.