Q890CFD液压支架用高强度结构钢焊接性能研究  

Study on Weldability of Q890CFD High Strength Steel for Powered Support

作　　者：徐亚军[1,2] 王国法[1,2] 刘国柱[3] 姚连登[4] 屈朝霞[4] 

机构地区：[1]天地科技股份有限公司开采设计事业部,北京100013 [2]煤炭科学研究总院开采设计研究分院,北京100013 [3]中煤北京煤矿机械有限责任公司,北京102400 [4]宝山钢铁股份有限公司,上海210900

出　　处：《煤矿机械》2016年第2期52-54,共3页Coal Mine Machinery

基　　金：国家重点基础研究发展计划(973)资助项目(2014CB046302);国家高技术研究发展计划(863计划)基金资助项目(2012AA06A407);天地科技工艺技术创新基金(KJ-2014-TDKC-06)

摘　　要：通过热切割试验、斜Y坡口对接裂纹试验、焊接接头试验和最高热影响区硬度试验,对Q890CFD液压支架用高强度钢结构钢焊接性进行了研究,结果表明,该高强度钢有一定淬硬倾向,需预热切割,焊接时要预热同时进行焊后回火,预热温度不低于120℃,回火温度不低于480℃。Through thermal cutting test, Y-groove weld cracks test, welding joints test and the highest thermal influence zone hardness test, the welding performance of the Q890CFD high strength structural steel used for powered support were studied. The results show that the Q890CFD high strength steel has some hardened tendency and should be preheating cutting, welding to preheat and post weld tempering. The preheating temperature should be controlled not less than 120 ℃ and tempering temperature not less than 480 ℃.

关 键 词：液压支架 高强度结构钢 焊接性能 

分 类 号：TD355[矿业工程—矿井建设] TG113.26[金属学及工艺—物理冶金]