| 焊后热处理对特厚板20MnNiMo焊接残余应力的影响 |
| |
| 引用本文： | 迟露鑫,陈重毅,麻永林,邢淑清,方立新.焊后热处理对特厚板20MnNiMo焊接残余应力的影响[J].材料热处理学报,2012,33(4):96-99. |
| |
| 作者姓名： | 迟露鑫 陈重毅 麻永林 邢淑清 方立新 |
| |
| 作者单位： | 1. 重庆理工大学材料科学与工程学院,重庆400050／内蒙古科技大学材料与冶金学院,内蒙古包头014010
2. 内蒙古科技大学材料与冶金学院,内蒙古包头,014010 |
| |
| 基金项目： | 科技重大专项子课题项目 |
| |
| 摘 要： | 为了研究焊后热处理对8万吨模锻压机主缸材料20MnNiMo焊接接头残余应力的影响,制定了窄间隙焊接方案和15 h×(550±10)℃焊后热处理方案,并通过盲孔法对焊接接头表面残余应力进行了测定和记录。得到了15 h×(550±10)℃焊后热处理对20MnNiMo厚板焊接接头残余应力场分布的影响。结果表明:15 h×(550±10)℃去应力退火可以很好的减小20MnNiMo厚板焊接残余应力,去应力效果显著,可以很好地改善20MnNiMo焊接残余应力的分布,该热处理方案满足实际产品需要,可以用于实际焊接生产中。
|
| 关 键 词： | 20MnNiMo 残余应力 焊后热处理 盲孔法 |
Effect of post-weld heat treatment on residual stress in submerged-arc welds of 20MnNiMo steel heavy plate |
| |
| CHI Lu-xin,CHEN Zhong-yi,MA Yong-lin,XING Shu-qing,FANG Li-xin.Effect of post-weld heat treatment on residual stress in submerged-arc welds of 20MnNiMo steel heavy plate[J].Transactions of Materials and Heat Treatment,2012,33(4):96-99. |
| |
| Authors: | CHI Lu-xin CHEN Zhong-yi MA Yong-lin XING Shu-qing FANG Li-xin |
| |
| Affiliation: | 1.College of Materials Science and Engineering,Chongqing University of Technology,Chongqing 400050,China; 2.College of Materials and Metallurgy,Inner Mongolia University of Science and Technology,Baotou 014010,China) |
| |
| Abstract: | In order to study the effect of post-weld heat treatment(PWHT) on welding residual stress of 20MnNiMo steel heavy plate used as master cylinder material in 80,000 tons forging press,a welding experiment program and PWHT process were developed.The residual stress of the heavy plate joints of 20MnNiMo steel was measured by blind hole drilling method.The effect of PWHT at 550 ℃ for 15 h on welding residual stress in 20MnNiMo steel joints was obtained.The results show that the PWHT can significantly release the residual stress of the 20MnNiMo steel joints.The residual stress distribution in the joints is well improved.A satisfactory result for eliminoation of residual stress in the heavy plate joints by the PWHT is obtained,and the PWHT process can be used in engineering. |
| |
| Keywords: | 20MnNiMo steel residual stress post-weld heat treatment blind hole drilling method |
| 本文献已被 CNKI 万方数据 等数据库收录！ |
|
