电焊机2018，Vol.48Issue(1)：115-120,6.DOI:10.7512/j.issn.1001-2303.2018.01.26
42CrMo转子轴与Q235B辐板焊接工艺
Welding technology of 42CrMo rotor spindle and Q235B plate
摘要
Abstract
The wind turbine rotor is alloy steel 42CrMo and Q235B dissimilar steel structure,the SMAW and MAG hybrid welding are used to perform the welding experiments.Through metallographic microscope,universal mechanical testing machine and scanning electron microscope analysis,the microstructure properties and appearance of fracture of the welded joints are observed and analyzed.The results show that the increase of welding heat input will reduce the bending properties and low temperature impact properties of welded joints of 42CrMo and Q235B,in the actual welding of motor,the welding heat input,preheat temperature and interpass temperature should be controlled;the microstructure,mechanical properties and the appearance of impact fracture and other technical indicators of welded joints in the 42CrMo and Q235B dissimilar steels prepared by a welding technology with a small heat input all meet the relevant standards,which provides strong technical support for the welding of motor rotor.关键词
42CrMo/Q235B/显微组织/力学性能Key words
42CrMo/Q235B/microscopic structure/mechanical property分类
矿业与冶金引用本文复制引用
朱建玮,庄明辉,王军,吕迎,连军,马振..42CrMo转子轴与Q235B辐板焊接工艺[J].电焊机,2018,48(1):115-120,6.基金项目
黑龙江省普通本科高等学校青年创新人才培养计(UNPYSCT-2016203) （UNPYSCT-2016203）
佳木斯大学科学技术校级项目(L2013-071) （L2013-071）
