铸造技术2017，Vol.38Issue(10)：2484-2487,4.DOI:10.16410/j.issn1000-8365.2017.10.045
智能型建筑耐火钢Q420FRE焊接性能研究
Welding Performance of Intelligent Building Refractory Steel Q420FRE
摘要
Abstract
The construction of intelligent Q420FRE refractory steel as the research object,using Gleeble3800 thermal simulation testing machine on the microstructure transformation and weldability,welding heat affected zone,and Q420FRE of 40 and 60 mm thick steel plate inclined Y groove welding crack tests had been carried out.The results show that the Q420FRE intelligent retractory steel,in a larger range of cooling rate (3～600 s),the microstructure mainly for granular bainite,hardness value ranges are HV0.2186.7～207.4.Within the large energy input welding,the welding heat affected zone coarse grain zone group stability,stable performance,can adapt to the large heat input welding.The thickness with 40 and 60 mm steel plate of Q420FRE are gas shielded are welding with the BHG-2 wire,and the preheating temperature is 50 ℃ and 75 ℃ for preventing the welding cold cracking,respectively.关键词
耐火钢/热影响区/焊接性能Key words
refractory steel/heat affected zone/welding performance分类
矿业与冶金引用本文复制引用
解立远..智能型建筑耐火钢Q420FRE焊接性能研究[J].铸造技术,2017,38(10):2484-2487,4.基金项目
四川省教育厅科研资助项目(14ZB0356) （14ZB0356）
