FV520B钢和Q235A钢焊接接头的维氏硬度试验  

Vickers Hardness Test of Welding Joints of FV520B Steel and Q235A Steel

作　　者：杜凯[1] 张忠和[1] 

机构地区：[1]沈阳鼓风机集团股份有限公司,沈阳110869

出　　处：《理化检验（物理分册）》2017年第1期24-28,共5页Physical Testing and Chemical Analysis(Part A:Physical Testing)

摘　　要：在没有x-y轴移动装置的HV-120型维氏硬度计上,仅增加简单的辅助工具,成功完成了FV520B马氏体沉淀硬化不锈钢和Q235A钢V型焊缝焊接接头的维氏硬度试验。结果表明:FV520B钢焊接接头的焊缝、熔合线、热影响区以及母材的维氏硬度差别较小,硬度分布比较均匀,焊接质量满意;Q235A钢焊接接头的焊缝、熔合线、热影响区以及母材的维氏硬度差别更小,硬度分布更加均匀,焊接质量更好。该试验方法操作简单、方便实用,可以完成V型焊缝焊接接头的维氏硬度测试,对使用没有x-y轴移动装置的维氏硬度计的企业进行焊缝质量评定具有借鉴作用。The Vickers hardness tests of V-type welding joints of FV520 Bsteel,a kind of martensitic precipitation hardening stainless steel,and Q235 A steel were successfully completed by HV-120 type Vickers hardness tester which had no x-ycoordinate bench and was equipped with some simple auxiliary tools.The results show that：the Vickers hardness difference among welding seam,fusion line,heat affected zone and base metal of the welding joint of FV520 Bsteel was small,the hardness was well distributed and the welding quality was desirable;the Vickers hardness difference among welding seam,fusion line,heat affected zone and base metal of the welding joint of Q235 Asteel was even smaller,the hardness was better distributed and the welding quality was better.The testing method was convenient,practical and easy to operate,and it was qualified to test the Vickers hardness of V-type welding joints and provide a reference for those who carried out the welding quality evaluation by Vickers hardness tester without x-ycoordinate bench.

关 键 词：FV520B钢 Q235A钢 焊接接头 V型焊缝 维氏硬度试验 

分 类 号：TG115.51[金属学及工艺—物理冶金] TG407[金属学及工艺—金属学]