福建工程学院学报
福建工程學院學報
복건공정학원학보
JOURNAL OF FUJIAN UNIVERSITY OF TECHNOLOGY
2014年
4期
348-352
,共5页
BB503 钢板%气电立焊%埋弧自动横焊%焊接工艺%性能
BB503 鋼闆%氣電立銲%埋弧自動橫銲%銲接工藝%性能
BB503 강판%기전립한%매호자동횡한%한접공예%성능
BB503 steel%electro-gas welding%automatic submerged-arc welding%welding process%property
根据高炉炉壳生产实际，分别使用气电立焊和埋弧自动横焊两种焊接工艺对50 mm 厚的BB503型炉壳用钢板进行焊接，对焊缝进行外观检查、无损探伤，对焊接接头进行拉伸、侧弯、冲击、硬度等性能测试，并对焊接热影响区的显微组织进行了观察和分析。结果表明，BB503炉壳用钢的气电立焊和埋弧自动横焊焊接接头抗拉强度和冲击吸收功均大于母材，具有优良的综合力学性能；焊缝区及热影响区的显微维氏硬度分布和热影响区的组织均匀性均显著优于传统的 CO2气体保护焊和手工电弧焊接头。气电立焊和埋弧自动横焊工艺可以替代 CO2气体保护焊和手工电弧焊工艺用于高炉炉壳焊接制造。
根據高爐爐殼生產實際，分彆使用氣電立銲和埋弧自動橫銲兩種銲接工藝對50 mm 厚的BB503型爐殼用鋼闆進行銲接，對銲縫進行外觀檢查、無損探傷，對銲接接頭進行拉伸、側彎、遲擊、硬度等性能測試，併對銲接熱影響區的顯微組織進行瞭觀察和分析。結果錶明，BB503爐殼用鋼的氣電立銲和埋弧自動橫銲銲接接頭抗拉彊度和遲擊吸收功均大于母材，具有優良的綜閤力學性能；銲縫區及熱影響區的顯微維氏硬度分佈和熱影響區的組織均勻性均顯著優于傳統的 CO2氣體保護銲和手工電弧銲接頭。氣電立銲和埋弧自動橫銲工藝可以替代 CO2氣體保護銲和手工電弧銲工藝用于高爐爐殼銲接製造。
근거고로로각생산실제，분별사용기전립한화매호자동횡한량충한접공예대50 mm 후적BB503형로각용강판진행한접，대한봉진행외관검사、무손탐상，대한접접두진행랍신、측만、충격、경도등성능측시，병대한접열영향구적현미조직진행료관찰화분석。결과표명，BB503로각용강적기전립한화매호자동횡한한접접두항랍강도화충격흡수공균대우모재，구유우량적종합역학성능；한봉구급열영향구적현미유씨경도분포화열영향구적조직균균성균현저우우전통적 CO2기체보호한화수공전호한접두。기전립한화매호자동횡한공예가이체대 CO2기체보호한화수공전호한공예용우고로로각한접제조。
BB503 steel with thickness of 50 mm was welded by electro-gas welding technology and automatic submerged-arc welding technology.The welded joints were inspected by appearance and non-destructive inspections.The tensile,bending,impact properties and hardness of the joints were investigated,and the microstructures of heat affected zone were observed.The results show that the tensile strength and impact absorbing energy of the welded joints were higher than that of base met-al.The microhardness and microstructures distributions were more homogeneous than that of CO2 gas shield welding and manual arc welding.The electro-gas welding technology and automatic sub-merged-arc welding technology were suitable for welding production of blast furnace.
