公开(公告)号：US10807177B2

公开(公告)日：2020-10-20

申请号：US16487523

申请日：2018-02-21

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Kazuaki Hosomi ,  Kouki Tomimura ,  Takefumi Nakako

IPC分类号： B23K1/19 ,  B23K1/20 ,  B23K35/28 ,  C22C18/04 ,  B23K103/08 ,  B23K103/10 ,  B23K101/18

摘要： The present invention provides a method for MIG brazing an Al alloy to a steel sheet so as to manufacture a lap joint member that excels in bonding strength with respect to the Al alloy. With the MIG brazing method, a bonding target sheet, specifically, an Al sheet or an Al alloy sheet is bonded to a hot dip Zn-based alloy coated steel sheet (1) whose coating layer contains Al in an amount of 1.0% by mass to 22.0% by mass. A target location of MIG brazing is a region between (i) an intersection (C) of one end of an end surface (6) of the bonding target sheet and the hot dip Zn-based alloy coated steel sheet and (ii) the other end (U) of the end surface of the bonding target sheet.

公开(公告)号：US20200055133A1

公开(公告)日：2020-02-20

申请号：US16487523

申请日：2018-02-21

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Kazuaki Hosomi ,  Kouki Tomimura ,  Takefumi Nakako

IPC分类号： B23K1/19 ,  B23K35/28 ,  C22C18/04 ,  B23K1/20

摘要： The present invention provides a method for MIG brazing an Al alloy to a steel sheet so as to manufacture a lap joint member that excels in bonding strength with respect to the Al alloy. With the MIG brazing method, a bonding target sheet, specifically, an Al sheet or an Al alloy sheet is bonded to a hot dip Zn-based alloy coated steel sheet (1) whose coating layer contains Al in an amount of 1.0% by mass to 22.0% by mass. A target location of MIG brazing is a region between (i) an intersection (C) of one end of an end surface (6) of the bonding target sheet and the hot dip Zn-based alloy coated steel sheet and (ii) the other end (U) of the end surface of the bonding target sheet.

公开(公告)号：US10792746B2

公开(公告)日：2020-10-06

申请号：US16487516

申请日：2018-02-21

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Kazuaki Hosomi ,  Kouki Tomimura ,  Takefumi Nakako

IPC分类号： B23K26/20 ,  B23K26/32 ,  B23K1/005 ,  B23K1/19 ,  C22C21/10 ,  C23C2/06

摘要： The present invention provides a method for laser brazing an Al alloy to a steel sheet so as to produce a lap joint member that excels in bonding strength with respect to the Al alloy. The laser brazing method includes a brazing step of forming a brazed part (9) for bonding an Al alloy (3) to a hot dip Zn-based alloy coated steel sheet (1) in which a coating layer (2) contains 1.0 to 22.0% by mass of Al and a coating weight per surface is 15 to 250 g/m2.

公开(公告)号：US20200023453A1

公开(公告)日：2020-01-23

申请号：US16487516

申请日：2018-02-21

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Kazuaki Hosomi ,  Kouki Tomimura ,  Takefumi Nakako

IPC分类号： B23K1/005 ,  B23K1/19 ,  C22C21/10 ,  C23C2/06

摘要： The present invention provides a method for laser brazing an Al alloy to a steel sheet so as to produce a lap joint member that excels in bonding strength with respect to the Al alloy. The laser brazing method includes a brazing step of forming a brazed part (9) for bonding an Al alloy (3) to a hot dip Zn-based alloy coated steel sheet (1) in which a coating layer (2) contains 1.0 to 22.0% by mass of Al and a coating weight per surface is 15 to 250 g/m2.

公开(公告)号：US10975899B2

公开(公告)日：2021-04-13

申请号：US16344435

申请日：2017-09-15

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Kazuaki Hosomi ,  Tomokazu Nobutoki ,  Takefumi Nakako

IPC分类号： C23C2/06 ,  C23C2/40 ,  C22C18/04 ,  B23K9/025 ,  F16B5/08 ,  B23K9/09 ,  B23K9/02 ,  B23K9/23 ,  B32B15/04 ,  B23K9/16 ,  C23C30/00 ,  B32B15/01 ,  B23K35/38 ,  C22C18/00 ,  B32B15/18 ,  B23K101/00 ,  B23K101/34

摘要： A welded member includes a hot dip Zn-based alloy coated steel sheet as a base material and has excellent corrosion resistance and weld bead shear strength. In the welded member in which a lower sheet and an upper sheet, which are hot dip Zn-based alloy coated steel sheets, are stacked and arc-welded together, a weld bead is formed so that a cross-sectional width W satisfies the following formula 2T≤W≤6T, and a blowhole occupancy Br represented by the following formula becomes not more than 50%: Br=(Σdi/L)×100, where T represents a thickness of the hot dip Zn-based alloy coated steel sheet, di represents a length of an i-th blowhole observed in X-ray radiography, and L represents a length of the weld bead.

公开(公告)号：US20200056643A1

公开(公告)日：2020-02-20

申请号：US16344435

申请日：2017-09-15

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Kazuaki Hosomi ,  Tomokazu Nobutoki ,  Takefumi Nakako

IPC分类号： F16B5/08 ,  C23C2/06 ,  C23C2/40 ,  C22C18/04 ,  B23K9/025

摘要： A welded member includes a hot dip Zn-based alloy coated steel sheet as a base material and has excellent corrosion resistance and weld bead shear strength. In the welded member in which a lower sheet and an upper sheet, which are hot dip Zn-based alloy coated steel sheets, are stacked and arc-welded together, a weld bead is formed so that a cross-sectional width W satisfies the following formula 2T≤W≤6T, and a blowhole occupancy Br represented by the following formula (2) becomes not more than 50%: Br=(Σdi/L)×100, where T represents a thickness of the hot dip Zn-based alloy coated steel sheet, di represents a length of an i-th blowhole observed in X-ray radiography, and L represents a length of the weld bead.

公开(公告)号：US10518351B2

公开(公告)日：2019-12-31

申请号：US15529233

申请日：2015-07-31

申请人： NIPPON STEEL NISSHIN CO., LTD.

发明人： Tomokazu Nobutoki ,  Kazuaki Hosomi

IPC分类号： B23K9/00 ,  B23K9/02 ,  B23K9/23 ,  C23C2/06 ,  C22C18/04 ,  B23K9/032 ,  B23K9/095 ,  F16B5/08 ,  B23K103/04 ,  B23K101/18

摘要： Provided are: an arc welding method that suppresses occurrences of blow holes in initial parts and final parts in a Zn plated steel sheet and reduces the occupancy ratio for blow holes in the welded part as a whole; and a welded joint.