焊管
銲管
한관
Welded Pipe and Tube
2015年
8期
6-10
,共5页
工程机械用钢%无预热焊接%冷裂纹敏感性%气体保护焊接%焊接材料
工程機械用鋼%無預熱銲接%冷裂紋敏感性%氣體保護銲接%銲接材料
공정궤계용강%무예열한접%랭렬문민감성%기체보호한접%한접재료
engineering machinery steel%welding without preheating%cold cracking sensitivity%gas shielded welding%welding material
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，对20 mm和40 mm规格HG785钢的冷裂纹敏感性、焊接工艺性能、焊接材料及焊接热影响区、焊缝性能变化规律进行了试验研究。研究结果表明，20 mm规格以下HG785钢可实现无预热焊接，等强匹配WER80焊丝气体保护焊接接头力学性能亦达到该钢种工程技术要求。
為瞭檢驗武鋼研髮的高彊度級彆工程機械用鋼HG785的銲接性能是否滿足工程技術要求，加快該鋼種的推廣應用，對20 mm和40 mm規格HG785鋼的冷裂紋敏感性、銲接工藝性能、銲接材料及銲接熱影響區、銲縫性能變化規律進行瞭試驗研究。研究結果錶明，20 mm規格以下HG785鋼可實現無預熱銲接，等彊匹配WER80銲絲氣體保護銲接接頭力學性能亦達到該鋼種工程技術要求。
위료검험무강연발적고강도급별공정궤계용강HG785적한접성능시부만족공정기술요구，가쾌해강충적추엄응용，대20 mm화40 mm규격HG785강적랭렬문민감성、한접공예성능、한접재료급한접열영향구、한봉성능변화규률진행료시험연구。연구결과표명，20 mm규격이하HG785강가실현무예열한접，등강필배WER80한사기체보호한접접두역학성능역체도해강충공정기술요구。
In order to verify whether the weldability of high strength steel HG785 used for engineering machinery can meet the requirements of engineering technology, it should speed up the popularization and application of this steel grade. In this article, it studied 20 mm and 40 mm HG785 steel from several aspects, including cold cracking sensitivity, welding process performance, welding material, change rule of HAZ and weld properties. The results indicated that HG785 steel below 20 mm can realize welding without preheating, and the mechanical properties of welded joints by adopting gas shielded welding with same strength matching WER80 wire also reach the requirements of this steel engineering technology.
