| 铸造不锈钢阀体裂纹分析 |
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| 引用本文： | 孔祥夷,王家帮,赵晶,王焱. 铸造不锈钢阀体裂纹分析[J]. 压力容器, 2011, 0(11): 53-58 |
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| 作者姓名： | 孔祥夷 王家帮 赵晶 王焱 |
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| 作者单位： | 河南省锅炉压力容器安全检测研究院; |
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| 摘 要： | 对ZG08Cr18Ni9不锈钢阀体的化学成分、力学性能、裂纹特征、阀体内部残留物质物相及金相组织进行了分析。分析结果表明，应力腐蚀开裂是造成阀体产生裂纹的根本原因，阀体材料成分中个别元素偏离标准及铸件缩松、夹杂物多且缺陷尺寸过大加速了裂纹的产生与扩展。最后提出了相应的预防措施。
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| 关 键 词： | 铸造不锈钢 缩松 应力腐蚀开裂 裂纹分析 |
Crack Analysis on Casting Stainless Steel Valve Body |
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| KONG Xiang-yi,WANG Jia-bang,ZHAO Jing,WANG Yan. Crack Analysis on Casting Stainless Steel Valve Body[J]. Pressure Vessel Technology, 2011, 0(11): 53-58 |
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| Authors: | KONG Xiang-yi WANG Jia-bang ZHAO Jing WANG Yan |
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| Affiliation: | KONG Xiang-yi,WANG Jia-bang,ZHAO Jing,WANG Yan(Henan Province Institute of Boilers and Pressure Vessel Safety Testing,Zhengzhou 450016,China) |
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| Abstract: | The chemical composition,mechanical properties,crack characteristic,residual substance phase in valve body and microstructure of the ZG08Cr18Ni9 stainless steel valve were analyzed.The results indicated that SCC was the root causes of cracks,and materials composition deviation from the standards and the over size of casting shrinkage porosity accelerated cracks initiation and propagation.Finally,the relevant preventive measures have been put forward. |
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| Keywords: | casting stainless steel shrinkage porosity SCC crack analysis |
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