LJG315型掘进机从动链轮焊接性能研究  

Study on the Weldability of the Driven Sprocket of LJG315 Heading Machine

作　　者：郑喜平 赵富军 郝平凯 刘朝旭[2] 

机构地区：[1]林州重机集团股份有限公司技术处,安阳456550 [2]河南省科学技术信息研究院,郑州450003

出　　处：《价值工程》2014年第15期42-43,共2页Value Engineering

摘　　要：LJG315型掘进机从动链轮是由35CrMo钢和27SiMn钢焊接而成的,在220℃预热的情况下,利用气体保护对35CrMo钢和27SiMn钢进行了焊接,观察了焊接接头的显微组织并测量了硬度。经生产验证,其焊接性能满足了从动链轮的力学性能要求。LJG315 roadheader driven sprocket is welded by 35CrMo and 27SiMn steel. With mixed gas protection and 220℃preheated, 35CrMo steel and 27SiMn steel were welded. The microstructure of welded joints was observed and the hardness was tested. The production showed that the welded joints can meet the requirements of mechanical properties of driven sprocket.

关 键 词：35CRMO钢 27SIMN钢 从动链轮 焊接性能 

分 类 号：U455.31[建筑科学—桥梁与隧道工程] TG407[交通运输工程—道路与铁道工程]