中国机械工程2017，Vol.28Issue(9)：1097-1100,4.DOI:10.3969/j.issn.1004-132X.2017.09.016
曲面冲击头随焊冲击旋转挤压法控制40Cr钢冷裂纹
Research on Preventing Weld Cold Crack of 40Cr by Impact Revolution Curved Rod
摘要
Abstract
Weld cold cracks of 40Cr under the conditions of strong constraint degrees were con-trolled by the method of welding with impact revolution.In order to increase the plastic deformations of the action zones,the geometrical shapes of the impacting rod were designed to curved shapes.The residual stresses of the workpieces with and without the impact revolution effect were measured.The distances between the welding torch and impacting rod were as 80 mm,100 mm and 110 mm respec-tively.The residual stresses at the j oints were measured by small hole method.The experimental re-sults show that the residual stress may be reduced by the method.The new method may prove the possibility on preventing weld cold cracks by reducing residual stresses.关键词
随焊冲击旋转挤压/冷裂纹/残余应力/曲面冲击头Key words
welding with impact revolution/cold crack/residual stress/curved surface impact rod分类
矿业与冶金引用本文复制引用
张勇,孙琳琳,綦秀玲..曲面冲击头随焊冲击旋转挤压法控制40Cr钢冷裂纹[J].中国机械工程,2017,28(9):1097-1100,4.基金项目
辽宁工程技术大学生产技术问题创新研究基金资助项目(20160002T) （20160002T）
