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为了检验武钢研发的高强度级别工程机械用钢HG785的焊接性能是否满足工程技术要求,加快该钢种的推广应用,本文对20 mm规格的HG785钢焊接工艺性能、焊接材料及焊接热影响区、焊缝性能及组织变化规律进行了研究。结果表明,HG785钢等强匹配FK1000焊丝气保焊接头力学性能亦达到该钢种工程技术要求。
In order to test whether the welding performance of high strength steel HG785 developed by WISCO meets the engineering requirements and speed up the popularization and application of the steel, the welding performance of 20 mm HG785 steel, welding materials and HAZ, Weld performance and organizational changes were studied. The results show that the mechanical properties of HG785 steel and other FK1000 gas-welded joints also meet the technical requirements of the steel grades.