起重机轻量化用Q890级高强钢焊接材料优化

摘要

AMC 20, ERM and BHG-5 high strength steel welding wires with diameter of 1.2 mm are used for welding test on Q890 steel , showing that ERM welding wire is comparatively better. Thus, the ERM welding wire is selected to evaluate welding process of Q890 high strength steel. The results indicate that welded joints obtained by welding with ERM welding wire at process parameters used in this test satisfy relevant performance requirements.%采用直径为1.2 mm的AMC 20、ERM、BHG-5三种高强钢焊丝,对Q890钢材进行焊接试验,试验结果显示ERM焊丝具有相对较优的性能.采用优选焊丝ERM进行Q890高强钢焊接工艺评定.结果显示,在本试验所用工艺参数下焊接,采用ERM焊丝能够获得满足相关使用性能要求的焊接接头.