铁道科学与工程学报2016，Vol.13Issue(12)：2490-2495,6.
放热焊接钢轨温度分布及预热保温研究
Research on temperature distribution,preheating and heat preservation of rail under exothermic welding
摘要
Abstract
In the construction process of Rail transit lines,a lot of wire connectors will be welded on the rail. When heat treatment can not be handled properly,Martensite will exist in the rail,and that will make the rail structure embrittlement and poor toughness.At last,it will affect the safety of the vehicle.In this paper,experi-ment and simulation analysis are compared for mutual proof.After finite element model of rail has been built, temperature distribution of welded rail and the influence range of Martensite temperature point are got from differ-ent preheating condition.In this paper,the exothermic welding rail preheating and heat preservation measures are proposed.These findings can provide a theoretical basis for the rail transit line construction.关键词
放热焊接/钢轨/温度分布/预热/保温Key words
exothermic welding/rail/temperature distribution/preheating/heat preservation分类
交通工程引用本文复制引用
黄尊地,常宁,冯振富,余启智..放热焊接钢轨温度分布及预热保温研究[J].铁道科学与工程学报,2016,13(12):2490-2495,6.基金项目
江门市基础与理论科学研究类计划项目 （）
