金属加工（热加工）Issue(2)：55-60,6.
贝氏体合金钢道岔补焊工艺研究
Research on welding repair process of bainitic alloy steel turnouts
谢祖飞 1王振伟 1王建轩 1孙野 1崔琨喨 1李威1
作者信息
- 1. 中铁山桥集团有限公司 河北秦皇岛 066205
- 折叠
摘要
Abstract
In order to address the crack issues in the straight switch rail seat of bainitic steel railway turnouts for trams,a repair welding process for bainitic alloy steel turnouts was conducted using bainitic alloy steel blanks of the same material and specialized welding electrodes for alloy steel combined frog point rails(JD937).The results showed that after the repair welding process,the bonding between the base metal and the weld,as well as between weld layers,was satisfactory.The microstructure of the base metal was primarily bainitic,while the weld microstructure consisted mainly of bainite and retained austenite.The hardness of the weld matched well with that of the base metal,with a uniform hardness distribution across the welded joint.The impact toughness of the weld met the required service standards.Corresponding solutions were proposed for defects observed in the repair-welded specimens and technical issues encountered during field operations.This study provides valuable insights for both research and engineering applications of repair welding processes for bainitic alloy steel turnouts.关键词
贝氏体合金钢/补焊/JD937焊条/硬度/金相组织/线路作业Key words
bainitic alloy steel/welding repair/electrode JD937/hardness/metallographic structure/line operation引用本文复制引用
谢祖飞,王振伟,王建轩,孙野,崔琨喨,李威..贝氏体合金钢道岔补焊工艺研究[J].金属加工（热加工）,2026,(2):55-60,6.
