压力容器
壓力容器
압력용기
2015年
4期
22-28
,共7页
田志杰%熊林玉%李延民%周庆%杜岩峰%李鸣钺
田誌傑%熊林玉%李延民%週慶%杜巖峰%李鳴鉞
전지걸%웅림옥%리연민%주경%두암봉%리명월
冷金属过渡%5A06铝合金%拉伸性能%无垫板焊接%曲线焊缝%薄板
冷金屬過渡%5A06鋁閤金%拉伸性能%無墊闆銲接%麯線銲縫%薄闆
랭금속과도%5A06려합금%랍신성능%무점판한접%곡선한봉%박판
cold metal transfer(CMT)%5 A06 aluminium alloy%tensile performance%no-liner plate%curve weld%thin sheet
针对薄板铝合金三维曲线焊缝较大的残余应力和焊接变形，进行了冷金属过渡（CMT）无垫板自动焊试验研究，分析了电流、焊接速度、弧长修正、保护气流量对焊接过程的影响，进行了接头拉伸性能试验及焊缝微观组织研究，并焊接了变形小的产品。结果表明，利用合理的焊接参数，可实现厚度1．5 mm的5 A06铝合金的无垫板CMT焊接，焊缝成形稳定均匀，焊接接头抗拉强度值达到347 MPa，接头断裂位置在热影响区。无垫板CMT焊接技术可用于薄板铝合金空间曲线焊缝的焊接。
針對薄闆鋁閤金三維麯線銲縫較大的殘餘應力和銲接變形，進行瞭冷金屬過渡（CMT）無墊闆自動銲試驗研究，分析瞭電流、銲接速度、弧長脩正、保護氣流量對銲接過程的影響，進行瞭接頭拉伸性能試驗及銲縫微觀組織研究，併銲接瞭變形小的產品。結果錶明，利用閤理的銲接參數，可實現厚度1．5 mm的5 A06鋁閤金的無墊闆CMT銲接，銲縫成形穩定均勻，銲接接頭抗拉彊度值達到347 MPa，接頭斷裂位置在熱影響區。無墊闆CMT銲接技術可用于薄闆鋁閤金空間麯線銲縫的銲接。
침대박판려합금삼유곡선한봉교대적잔여응력화한접변형，진행료랭금속과도（CMT）무점판자동한시험연구，분석료전류、한접속도、호장수정、보호기류량대한접과정적영향，진행료접두랍신성능시험급한봉미관조직연구，병한접료변형소적산품。결과표명，이용합리적한접삼수，가실현후도1．5 mm적5 A06려합금적무점판CMT한접，한봉성형은정균균，한접접두항랍강도치체도347 MPa，접두단렬위치재열영향구。무점판CMT한접기술가용우박판려합금공간곡선한봉적한접。
For the higher residual stress and distortion of aluminium alloy sheet with three-dimensional curve weld,no-liner plate auto-welding was studied.The effect of current,speed,arc voltage,gas flux were investigated.The tensile performance and microstructure of joint were determined.The product with little weld distortion was manufactured.The results show that 1 .5 mm thick 5 A06 aluminium alloy three-dimen-sional curve weld can be achieved by reasonable no-liner plate CMT parameters.The weld shape is stable and uniform,tensile strength reached 347 MPa,fracture occurred in HAZ.No-liner plate CMT welding technology can be used in space curve welding for the aluminium alloy sheet.
