船舶起重机液压缸体断裂失效分析
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摘要
采用金相分析法及力学性能检测,对挖泥船的起重机液压缸体沿环焊缝区出现的脆性断裂进行了失效分析。结果表明,液压缸体与法兰体的环焊接工艺不是导致液压缸体发生断裂的诱因,而缸体材料的粗大晶粒才是液压缸体发生脆性断裂的主要原因。
Metallographic analysis and mechanical property examination were conducted to analyze the failure of the brittle fracture occurring around the welded zone along the ring of hydraulic cylinder. The results show that fracture of the hydraulic cylinder and flange was not caused by the circumferential welding process,but mainly caused by coarse grain structure of the cylinder material.
Metallographic analysis and mechanical property examination were conducted to analyze the failure of the brittle fracture occurring around the welded zone along the ring of hydraulic cylinder. The results show that fracture of the hydraulic cylinder and flange was not caused by the circumferential welding process,but mainly caused by coarse grain structure of the cylinder material.
引文
[1]李志群,孙梅红,张志远,等.魏氏组织形成机理及对钢管性能影响的分析研究[J].天津冶金,2008(5):8-124.
[2]李智超,赵立东,鲍泽斌.20g钢魏氏组织韧性及微观断口形貌研究[J].物理测试,2003(5):7-10.Li zhichao,Zhao Lidong,Bao Zebin.The study on the toughness and micro-fracture of wei orgnize[J].Physics Examination and Testing,2003(5):7-10.
[3]程里,林江.ZG25Cr Mn Ni焊补热影响区混晶魏氏组织的形成及改善[J].热加工工艺,2013,42(19):205-208.Cheng Li,Lin Jiang.Formation and improvement on Widmanstettan structure in welding heat affected zone of ZG25Cr Mn Ni steel[J].Hot Working Technology,2013,42(19):205-208.
[4]赵旭平,尹永晶,张勇.液压缸开裂失效分析[J].金属热处理,2005,30(10):86-88.Zhao Xuping,Yin Yongjing,Zhang Yong.Failure analysis on fracture of hydraulic pressure cylinder[J].Heat Treatment of Metals,2005,30(10):86-88.
[2]李智超,赵立东,鲍泽斌.20g钢魏氏组织韧性及微观断口形貌研究[J].物理测试,2003(5):7-10.Li zhichao,Zhao Lidong,Bao Zebin.The study on the toughness and micro-fracture of wei orgnize[J].Physics Examination and Testing,2003(5):7-10.
[3]程里,林江.ZG25Cr Mn Ni焊补热影响区混晶魏氏组织的形成及改善[J].热加工工艺,2013,42(19):205-208.Cheng Li,Lin Jiang.Formation and improvement on Widmanstettan structure in welding heat affected zone of ZG25Cr Mn Ni steel[J].Hot Working Technology,2013,42(19):205-208.
[4]赵旭平,尹永晶,张勇.液压缸开裂失效分析[J].金属热处理,2005,30(10):86-88.Zhao Xuping,Yin Yongjing,Zhang Yong.Failure analysis on fracture of hydraulic pressure cylinder[J].Heat Treatment of Metals,2005,30(10):86-88.