公开(公告)号：US06559417B2

公开(公告)日：2003-05-06

申请号：US09867670

申请日：2001-05-31

申请人： Jongwon Kim ,  Chulgyu Park

发明人： Jongwon Kim ,  Chulgyu Park

IPC分类号： B23K3502

CPC分类号： B23K35/3086 ,  B23K35/3607 ,  B23K35/3608 ,  B23K35/368

摘要： The present invention discloses a flux cored wire for arc welding of austenitic stainless steel which can restrain bending and high temperature cracking, and prevent a bead from being drooped. A flux filled in a sheath consisting of 18-8 stainless steel(C≦0.03 wt %, N≦0.02 wt %) comprises an alkali metal compound in an oxide converted amount of 0.05 to 1.0 wt % by weight of the welding wire, a metal fluoride in a fluorine converted amount below 0.08 wt %, Bi oxide in an amount below 0.1 wt %, Mn in an amount of 0.1 to 1.8 wt %, Cr in an amount of 2.0 to 4.0 wt %, SiO2 in an amount of 0.5 to 3.0 wt %, Al2O3 in an amount of 0.1 to 2.0 wt %, and TiO2 and ZrO2 wherein a ratio of (TiO2+ZrO2)/SiO2 is 0.8 to 1.6. Here, an amount of the flux filled in the sheath ranges from 15 to 35 wt % by weight of the welding wire. Accordingly, the flux cored wire restrains bending and high temperature cracking of the stainless steel weld metal, prevents the bead from being drooped, and reduces an amount of fume generated, thereby improving the vertical-up weldability.

公开(公告)号：US06573476B2

公开(公告)日：2003-06-03

申请号：US09960369

申请日：2001-09-24

申请人： Jongwon Kim ,  Chulgyu Park

发明人： Jongwon Kim ,  Chulgyu Park

IPC分类号： B23K3534

CPC分类号： B23K35/368 ,  B23K35/3608

摘要： The flux cored wire comprises, with respect to the total weight of the wire, a Ti and a Ti oxide of 3.0 wt % to 8.0 wt % as calculated in terms of TiO2 content, a Si and a Si oxide of 0.5 wt % to 2.0 wt % as calculated in terms of SiO2 content, a metal Mn and an alloy of Mn of 1.5 wt % to 3.5 wt % as calculated in terms of Mn content, a carbon (C) of 0.02 wt % to 0.10 wt %, an Mg and an Mg oxide of 0.5 wt % to 1.5 wt % as calculated in terms of MgO content, a compound of Na2O and K2O of 0.2 wt % and less, a Zr and a Zr oxide of 0.1 wt % to 0.5 wt % as calculated in terms of ZrO2 content, and an Al and an Al oxide of 0.2 wt % to 0.8 wt % as calculated in terms of Al2O3 content.

摘要翻译： 药芯焊丝相对于导线的总重量包含以TiO 2含量计算的3.0重量％至8.0重量％的Ti和Ti氧化物，0.5重量％至2.0重量％的Si和Si氧化物 以Mn含量计算的Mn含量为1.5重量％〜3.5重量％的Mn的金属Mn和合金，碳量（C）为0.02重量％〜0.10重量％，Mg 和按MgO​​计算的0.5重量％〜1.5重量％的Mg氧化物，Na2O和K2O的化合物为0.2重量％以下，Zr和Zr氧化物为0.1重量％〜0.5重量％，计算公式如下： 以ZrO 2含量计，以Al 2 O 3含量计算的Al和Al氧化物为0.2重量％〜0.8重量％。