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公开(公告)号：US20230167518A1
公开(公告)日：2023-06-01
申请号：US17802389
申请日：2021-02-16
发明人： Nobuhiko ODA , Yusuke FUJII , Shingo SATO , Ryo KAWABATA , Naoki KIKUCHI , Toshio SHIOTA , Ippei HIGUCHI
CPC分类号： C21C7/068 , C21C5/35 , C21C5/36 , C22C35/005 , C22C33/06
摘要： A method for producing low-carbon ferromanganese capable of achieving a high Mn yield. In producing low-carbon ferromanganese by blowing an oxidizing gas from a top-blowing lance onto a bath face of high-carbon ferromanganese molten metal accommodated in a reaction vessel provided with a top-blowing lance and bottom-blowing tuyere to perform decarburization, the slag composition during the blowing is adjusted so that a value of (CaO+MgO)/(Al2O3+SiO2) on a mass basis in the slag composition is not less than 0.4 but not more than 5.0. Also, agitation is performed under a condition that an agitation power density ε of an agitation gas blown through the bottom-blowing tuyere is not less than 500 W/t.
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公开(公告)号：US20220152680A1
公开(公告)日：2022-05-19
申请号：US17435681
申请日：2019-11-12
发明人： Yusuke FUJII , Masaki URABE
摘要： An automotive-structural-part joint structure is formed by bending one metal sheet, includes a groove portion including a top portion and a pair of side wall portions, is provided at an end part of one automotive structural part in a longitudinal direction, and is configured to join the one automotive structural part to another automotive structural part in an intersecting direction. The automotive-structural-part joint structure includes: a pair of vertical rib portions configured to stand upward from both side ends of the top portion; and an outward-directed flange portion configured to extend outward from three side edges of the groove portion on an end part side where the other automotive structural part is joined, the flange portion being continuously formed along the three side edges.
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公开(公告)号：US20180085811A1
公开(公告)日：2018-03-29
申请号：US15561581
申请日：2016-01-29
发明人： Yusuke FUJII , Yuji YAMASAKI , Toyohisa SHINMIYA
CPC分类号： B21D22/26 , B21D24/005
摘要： A press-forming method for a component having a hat-shaped or U-shaped cross section and comprising a curved portion curved in a widthwise direction along with a longitudinal direction and straight side portions connecting to both ends of the curved portion from a sheet-shaped blank, wherein the blank is drawn to a hat-shaped or U-shaped cross section through a hat-shaped cross-sectional form having a top portion, vertical wall portions connecting at their upper end parts to both end parts of the top portion through fillet portions, and flange portions connecting at their internal end parts to the lower end parts of the vertical wall portions through fillet portions, and a material movement in the flange portion of the curved portion is caused in the drawing to mitigate tensile deformation or compression deformation in the circumferential direction generated in the flange portion of the curved portion.
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公开(公告)号：US20230150002A1
公开(公告)日：2023-05-18
申请号：US17914990
申请日：2020-12-01
发明人： Yusuke FUJII , Masaki URABE
CPC分类号： B21D22/26 , B21D22/201
摘要： A press forming method includes: press forming a press formed product including a top portion, a side wall portion continuous from the top portion through a punch shoulder portion, and a flange portion continuous from the side wall portion through a die shoulder portion, the press formed product including a curved portion that is concave and curved in a top view; and increasing a bending radius of the punch shoulder portion in the curved portion from a center of a curve toward an end side of the curve.
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公开(公告)号：US20220154299A1
公开(公告)日：2022-05-19
申请号：US17601481
申请日：2020-04-02
发明人： Yumi MURAKAMI , Nobuhiko ODA , Yusuke FUJII , Goro OKUYAMA , Shota AMANO , Shinji KOSEKI , Shingo SATO , Yukio TAKAHASHI , Ryo KAWABATA , Naoki KIKUCHI , Atsuo YUASA
IPC分类号： C21C5/46
摘要： A top-blowing lance nozzle is configured to freely switch an adequate expansion condition so as to control an oxygen-blowing amount and a jetting velocity independently of each other without requiring a plurality of lance nozzles or a mechanically movable part. A lance nozzle is configured to blow refining oxygen to molten iron charged in a reaction vessel while a gas is blown from a top-blowing lance to the molten iron. One or more blowing holes for blowing a working gas are on an inner wall side surface of the nozzle, at a site where the lance nozzle has a minimum cross-sectional area in a nozzle axis direction or at a neighboring site of the site.
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6.发明申请公开(公告)号：US20180281043A1
公开(公告)日：2018-10-04
申请号：US16002267
申请日：2018-06-07
摘要： A method and die set for manufacturing a metal component with a three-dimensional edge from a blank as a raw material. The blank is cut from a metal sheet and has a curve-shaped curved edge portion with two ends. The method includes providing a bend formation line and forming the three-dimensional shape using a first die and a second die.
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公开(公告)号：US20170028455A1
公开(公告)日：2017-02-02
申请号：US15106724
申请日：2014-10-21
发明人： Yusuke FUJII , Toyohisa SHINMIYA , Eiji IIZUKA , Yuji YAMASAKI
IPC分类号： B21D22/26
摘要： A press forming method forms a metal plate into the part shape having at least a top surface portion and side wall portions continuous with both left and right sides of the top surface portion, the part shape having a U-shaped or hat-shaped cross section and having one or two or more bent portions bent in a longitudinal direction that is a direction intersecting the cross section. The press forming method includes: a first step of applying in-plane shear deformation to a plate portion on both sides or one side of the bent portions in the longitudinal direction of the metal plate, the in-plane shear deformation corresponding to a direction of bending the portion of the part shape; and a second step of implementing press forming for the metal plate into the part shape, the metal plate to which the in-plane shear deformation has been applied.
摘要翻译： 冲压成型方法将金属板形成为具有至少顶表面部分和与顶表面部分的左右两侧连续的侧壁部分的部分形状，该部分形状具有U形或帽形横截面 并且具有沿着与横截面相交的方向的纵向方向弯曲的一个或两个或更多个弯曲部分。 压制成形方法包括：对金属板的长度方向的弯曲部的两侧或一侧的板部施加面内剪切变形的第一工序，对应于金属板的长度方向的面内剪切变形 弯曲部分形状的部分; 以及将金属板的冲压成型实施为部件形状的第二步骤，施加了面内剪切变形的金属板。
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公开(公告)号：US20220259686A1
公开(公告)日：2022-08-18
申请号：US17626083
申请日：2020-07-02
发明人： Yumi MURAKAMI , Nobuhiko ODA , Hidemitsu NEGISHI , Ryo KAWABATA , Naoki KIKUCHI , Yusuke FUJII
IPC分类号： C21C1/02
摘要： A dephosphorization method using a top and bottom blown converter. This method uses a converter charged with molten iron and slag, to blow an oxygen-containing gas from a top-blowing lance, supply the gas from an inlet of a blowing hole, and supply a control gas from an opening toward an axial center. This method has: a slag top-surface position measurement step, with the top surface of the molten iron measured in advance, measuring an arbitrary position in a top surface of the slag; a slag top-surface difference calculation of slag thickness difference between the measured top-surface positions of the molten iron and the slag; and a jetting condition adjustment step of, using the obtained slag thickness, adjusting a jetting condition of the gas jetted from the top-blowing lance into an appropriate range. The top-blown jetting condition is adjusted by comparing the slag thickness and the depth of a surface depression.
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公开(公告)号：US20240066581A1
公开(公告)日：2024-02-29
申请号：US18269319
申请日：2021-08-05
发明人： Yusuke FUJII
摘要： A press forming method for suppressing wall camber of a side wall portion due to springback of a press-formed product including a top portion, the side wall portion and a flange portion includes: a first forming step of press-forming a preformed part including a flange portion having height continuously changed in an axial direction to have a concave shape, a convex shape or a concavo-convex shape more largely than a target shape of the press-formed product in a height direction to provide a height difference; and a second forming step of press-forming the preformed part into the press-formed product having the target shape to reduce the height difference of the flange portion of the preformed part.
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公开(公告)号：US20230415215A1
公开(公告)日：2023-12-28
申请号：US18036298
申请日：2021-07-02
发明人： Yusuke FUJII , Masaki URABE
IPC分类号： B21D22/26
CPC分类号： B21D22/26
摘要： A press forming part includes: a top portion; a side wall portion continuous from the top portion via a punch shoulder; and a flange portion continuous from the side wall portion via a die shoulder, the press forming part having a curved portion curved in a recessed manner in a top view, wherein a bending radius of the die shoulder in the curved portion is increased from an end side toward a middle portion of the curve.
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