Q460GJC高层建筑用钢焊接性能研究
Jiangxi Metallurgy（2017）
Abstract
对新钢生产的Q460GJC钢进行焊接工艺试验,了解460 MPa级高层建筑用钢焊接性能.首先对Q460GJC钢进行斜Y型抗裂性试验,确定预热温度,然后进行埋弧焊对接试验,再对焊后Q460GJC钢进行焊接接头力学性能试验及金相组织观察分析.结果表明:Q460GJC钢抗裂性较好,焊前可不进行预热;热影响区过热区晶粒粗大,硬度较高,但没有出现淬硬组织,热影响区综合力学性能良好.
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