高锰钢辙叉焊接工艺研究
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摘要
高锰钢辙叉与高碳钢钢轨焊接性能较差,且焊接工艺的要求区别很大,将两者直接进行焊接有较大难度,目前先进的技术是选择一种焊接性能好的材料作为中间介质,实现2种材料的焊接连接。本文采用单相不锈钢和双相不锈钢作为焊接介质,对采用2种不锈钢介质的焊接接头进行静弯强度和拉伸强度测试、无损探伤和显微组织检验,分析采用不同介质的焊接接头的各项力学性能和显微组织。试验结果表明:采用单相不锈钢介质焊接时可获得力学性能优良的高锰钢辙叉与高碳钢钢轨闪光对焊接头。
The welding performances of high manganese steel frog and high carbon steel rail are poor,and the requirements for welding procedures of these two components are very different. So it is diff icult to weld high manganese steel frog and high carbon steel rail directly. At present,the advanced technology is to choose a material with good welding performance as the intermediate medium to realize the welding connection of these two materials.In this paper,single phase stainless steel and double phase stainless steel were chosen as welding mediums. The welded joints with two different mediums were implemented static bending strength test,tensile strength test,nondestructive inspection and microstructure inspection,and their mechanical properties and microstructures were analyzed.The results showthat the flash butt welding joint of high manganese steel frog and high carbon steel rail with single phase stainless steel medium has good mechanical properties.
The welding performances of high manganese steel frog and high carbon steel rail are poor,and the requirements for welding procedures of these two components are very different. So it is diff icult to weld high manganese steel frog and high carbon steel rail directly. At present,the advanced technology is to choose a material with good welding performance as the intermediate medium to realize the welding connection of these two materials.In this paper,single phase stainless steel and double phase stainless steel were chosen as welding mediums. The welded joints with two different mediums were implemented static bending strength test,tensile strength test,nondestructive inspection and microstructure inspection,and their mechanical properties and microstructures were analyzed.The results showthat the flash butt welding joint of high manganese steel frog and high carbon steel rail with single phase stainless steel medium has good mechanical properties.
引文
[1]张福成.高锰钢辙叉材料研究进展[J].燕山大学学报,2010,34(3):189-193.
[2]张航.高锰钢辙叉机械冲击预硬化的研究[D].兰州:兰州理工大学,2018.
[3]廖宗喜.高锰钢的焊接性研究[J].科技与创新,2015(18):104.
[4]王仙利,闫旭辉.解决北美高锰钢辙叉生产瓶颈的工艺措施[J].机械,2012,39(增刊):92,106.
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[6]王振伟,姜志昆,刘振刚.高锰钢与钢轨的闪光焊接环状缺陷研究[J].金属加工(热加工),2015(12):64-66.
[7]裘荣鹏.高锰钢辙叉与U71Mn钢轨闪光对焊接头组织分析[J].热加工工艺,2014(23):57-60.
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[2]张航.高锰钢辙叉机械冲击预硬化的研究[D].兰州:兰州理工大学,2018.
[3]廖宗喜.高锰钢的焊接性研究[J].科技与创新,2015(18):104.
[4]王仙利,闫旭辉.解决北美高锰钢辙叉生产瓶颈的工艺措施[J].机械,2012,39(增刊):92,106.
[5]徐安友.高锰钢辙叉与钢轨的焊接[J].铁道工程学报,2003,20(3):86-89.
[6]王振伟,姜志昆,刘振刚.高锰钢与钢轨的闪光焊接环状缺陷研究[J].金属加工(热加工),2015(12):64-66.
[7]裘荣鹏.高锰钢辙叉与U71Mn钢轨闪光对焊接头组织分析[J].热加工工艺,2014(23):57-60.
[8]蔡开云,李念会.高锰钢辙叉焊接质量的主要影响因素及防范措施[J].中国设备工程,2012(11):32-33.
[9]国家铁路局.钢轨焊接第2部分闪光焊接:TB/T 1632. 2—2014[S].北京:中国铁道出版社,2014.