| 特厚压力容器钢板SA- 516 Gr.70探伤不合原因分析 |
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| 引用本文： | 孙殿东,张立芬,颜秉宇,王勇,王长顺,苏春霞.特厚压力容器钢板SA- 516 Gr.70探伤不合原因分析[J].轧钢,2017,34(3):81-82. |
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| 作者姓名： | 孙殿东 张立芬 颜秉宇 王勇 王长顺 苏春霞 |
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| 作者单位： | 鞍山钢铁股份有限公司，辽宁鞍山114001 |
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| 摘 要： | 利用光学金相显微镜对某钢铁公司生产的特厚规格压力容器钢板SA- 516 Gr.70探伤不合原因进行了分析研究。发现造成钢板探伤不合的原因是成分偏析造成碳富集，轧后组织转变中得到贝氏体+马氏体组织，应力没有及时释放产生了中间裂纹。
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| 关 键 词： | 压力容器钢板 探伤不合 马氏体组织 |
| 收稿时间： | 2016-05-23 |
Cause analysis of ultrasonic inspection disqualification of extra- heavy pressure vessel steel plate SA- 516 Gr.70 |
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| SUN Dian- dong,ZHANG Li- fen,YAN Bing- yu,WANG Yong,WANG Chang- shun,SU Chun- xia.Cause analysis of ultrasonic inspection disqualification of extra- heavy pressure vessel steel plate SA- 516 Gr.70[J].Steel Rolling,2017,34(3):81-82. |
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| Authors: | SUN Dian- dong ZHANG Li- fen YAN Bing- yu WANG Yong WANG Chang- shun SU Chun- xia |
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| Affiliation: | Technology Center of Anshan Iron & Steel Co.,Ltd.,Anshan 114001,China |
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| Abstract: | Optical metallographic microscope was used to analyse the detection flaw of extra- heavy pressure vessel steel SA- 516 Gr.70 in one iron and steel company.It was found that the flaw detection was caused by the bainite+martensite microstructure after rolling as carbon enrichment due to segregation,and then stress was not released in time to cause the intermediate crack. |
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| Keywords: | pressure vessel steel plate flaw detection Martensite |
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