渗硼钢板焊接接头的耐磨性  

Boronizing wear resistance of steel welded joints

作　　者：赵霞[1] 王勃 刘兴[1] 

机构地区：[1]黑龙江科技大学材料科学与工程学院,哈尔滨150022 [2]平朔露天设备维修中心,山西朔州036006

出　　处：《黑龙江科技学院学报》2014年第5期476-479,491,共5页Journal of Heilongjiang Institute of Science and Technology

摘　　要：为提高渗硼Q235钢焊接后接头的耐磨性,选择三种焊条对渗硼钢进行焊接,分析所得到的渗硼层和焊接接头的金相组织、显微硬度和耐磨性。结果表明:渗硼Q235钢表面峰值显微硬度可达16.17 GPa,经D256、D107、J422焊条焊接后,接头内显微硬度最高分别为3.21、4.90、2.94 GPa,相对耐磨性分别为渗硼钢的2.50、0.96、0.46倍。D107和D256焊条适宜焊接渗硼Q235钢,其耐磨性近于或优于渗硼钢。In order to improve the wear resistance of steel after boronizing Q235 welded joints, a choice of three electrodes for welding steel boronizing analyze the microstructure boride layer and the re- sulting weld joints, micro-hardness and wear resistance. The results showed that the peak boronizing Q235 steel surface microhardness up to 16.17 GPa, by D256, D107, J422 electrode within the joint highest micro-hardness after welding 3.21, 4.90, 2.94 GPa, respectively, relative wear resistance of steel were boriding the 2.50, 0.96, 0.46 times. D107 and D256 electrode suitable for welding boroniz- ing Q235 steel, the wear resistance near to or better than boronizing steel.

关 键 词：钢板 渗硼 焊接接头 显微组织 显微硬度 耐磨性 

分 类 号：TG457.1[金属学及工艺—焊接]