| 球磨铸铁传压套断裂原因分析与预防 |
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| 引用本文： | 孔学云,左凯,邵明仁,马认琦,于小龙,于海永. 球磨铸铁传压套断裂原因分析与预防[J]. 钢铁研究, 2011, 39(6): 23-25 |
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| 作者姓名： | 孔学云 左凯 邵明仁 马认琦 于小龙 于海永 |
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| 作者单位： | 1. 中海油能源发展监督监理技术公司,天津,300452
2. 中海油能源发展股份有限公司,北京,100000 |
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| 摘 要： | 针对球磨铸铁传压套在使用时发生的严重断裂问题,从传压套断裂宏观形貌、金相组织、化学成分、微观缺陷、热处理工艺等方面进行分析研究,结果表明：球磨铸铁中石墨的球化程度低和球化效果差是传压套断裂的直接原因。通过对原材料添加稀土元素La,采用等温淬火2次孕育工艺及提高球磨铸铁强度等措施,解决了球磨铸铁传压套断裂问题,并提出了预...
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| 关 键 词： | 球磨铸铁 脆性断裂 等温淬火 |
Analysis of cracking reason of ductile iron pressure sleeve and its preventive measures |
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| KONG Xue-yun,ZUO Kai,SHAO Ming-ren,MA Ren-qi,YU Xiao-long,YU Hai-yong. Analysis of cracking reason of ductile iron pressure sleeve and its preventive measures[J]. Research on Iron and Steel, 2011, 39(6): 23-25 |
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| Authors: | KONG Xue-yun ZUO Kai SHAO Ming-ren MA Ren-qi YU Xiao-long YU Hai-yong |
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| Affiliation: | KONG Xue-yun1,ZUO Kai1,SHAO Ming-ren1,MA Ren-qi1,YU Xiao-long1,YU Hai-yong2 (1.CNOOC Energy Technology & Services Supervision & Technology Co.,Tianjin 300452,China,2.CNOOC Energy Technology & Services Ltd.Co.,Beijing 100000,China) |
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| Abstract: | Serious cracking problem of ductile iron pressure sleeve is analyzed in macroscopical shape,metallographical structure,chemical composition,microscopic defect and heat treatment technology,etc.The results show that low nodularity and bad spheroidization of ductile iron pressure sleeve result in its cracking directly.Thank to measures,such as adding La element into the raw material,adopting isothermal quenching and second inoculation technology,and enhancing the strength of ductile iron,the cracking phenomen... |
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| Keywords: | ductile iron brittleness cracking isothermal quenching |
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