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1. 发明申请

US20190338381A1 METHOD FOR MANUFACTURING QUENCHED MOLDING, METHOD FOR MANUFACTURING HOT PRESS STEEL MATERIAL, AND HOT PRESS STEEL MATERIAL 审中-公开
公开(公告)号：US20190338381A1
公开(公告)日：2019-11-07
申请号：US16463777
申请日：2017-11-22
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Yoshiaki NAKAZAWA , Shinichiro TABATA , Kazuo HIKIDA , Toshiya SUZUKI , Atsuo KOGA , Koichi HAMADA
IPC分类号： C21D1/18 , C21D9/48 , C22C38/00 , C22C38/02 , C22C38/04 , C22C38/26 , C22C38/28 , C22C38/32
摘要： A method for manufacturing a quenched molding according to the present disclosure is a method including a first heat treatment process of heating a blanked steel material to a temperature higher than its Ac3 transformation point to perform austenite transformation, and then cooling to induce martensite transformation or bainite transformation, and a second heat treatment process of heating the steel material that has undergone the first heat treatment process to a temperature higher than the Ac3 transformation point to perform austenite transformation, and then cooling to induce martensite transformation. After the steel material has been heated to a temperature higher than the Ac3 transformation point in at least one process from out of the first heat treatment process or the second heat treatment process, molding is completed at a temperature higher than an Ar3 transformation point.

2. 发明申请

US20190111463A1 METHOD FOR PRODUCING PRESS-FORMED PRODUCT AND PRODUCTION LINE THEREOF 审中-公开
公开(公告)号：US20190111463A1
公开(公告)日：2019-04-18
申请号：US16088947
申请日：2017-04-03
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Junki NATORI , Yoshiaki NAKAZAWA , Ryuichi NISHIMURA , Keiji OGAWA
IPC分类号： B21D22/26 , B21D24/06
摘要： A method for producing a press-formed product includes a first pressing step and a second pressing step. In the first pressing step, an intermediate formed product is formed from a processed material by using first press tooling. The intermediate formed product includes a stepped section of a top plate section, a temporary vertical wall section adjacent to the top plate section via a ridge section and having at least part of the shape of the vertical wall section, and a temporary flange section adjacent to the temporary vertical wall section via a temporary ridge section. In the second pressing step, the press-formed product is formed from the intermediate formed product. In the second pressing step, forming is performed such that the temporary ridge section is moved toward the temporary flange section with at least part of the top plate section of the intermediate formed product restricted.

3. 发明申请

US20180272407A1 CUTTING DEVICE AND CUTTING METHOD 审中-公开
公开(公告)号：US20180272407A1
公开(公告)日：2018-09-27
申请号：US15547455
申请日：2016-02-01
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi NISHIMURA , Yasuhiro ITO , Yoshiaki NAKAZAWA
IPC分类号： B21D28/16 , B23D15/06 , B23D33/02 , B23D33/08
CPC分类号： B21D28/16 , B21D28/00 , B21D28/02 , B21D43/282 , B23D15/06 , B23D33/02 , B23D33/08
摘要： This cutting device is a device for obtaining a processed material by cutting off an end portion of a plate material by a first cutting blade and a second cutting blade which relatively approach each other, and includes: a first contact part and the first cutting blade which clamp a processed material portion of the plate material from front and back surfaces thereof; the second cutting blade and a second contact part which clamp an end material portion of the plate material from front and back surfaces thereof; and a drive part which causes the first cutting blade and the second cutting blade to start relative approach while maintaining a flat state where the processed material portion and the end material portion are on the same plane.

4. 发明申请

US20180093315A1 PRESSED COMPONENT MANUFACTURING METHOD, PRESSED COMPONENT, MOLD, AND PRESS APPARATUS 审中-公开
公开(公告)号：US20180093315A1
公开(公告)日：2018-04-05
申请号：US15567652
申请日：2016-04-21
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Masahiro KUBO , Hiroshi YOSHIDA , Takashi MIYAGI , Toshiya SUZUKI , Yoshiaki NAKAZAWA
IPC分类号： B21D22/26 , B21D5/01
CPC分类号： B21D22/26 , B21D5/01
摘要： A manufacturing method for a pressed component of the present disclosure is a manufacturing method for a pressed component configured including an elongated top plate, ridge line portions at both short direction ends of the top plate, and vertical walls that face each other in a state extending from the ridge line portions. A punch and a die are employed to curve a blank into a convex profile bowing from the punch side toward the die side in a state in which the punch is caused to contact a first portion of the blank where the two end ridge line portions are to be formed, and to sandwich a second portion of the blank where the top plate is to be formed between the die and the punch and indent the second portion from the die side toward the punch side.

5. 发明申请

US20170291208A1 PRODUCING METHOD, PRODUCING APPARATUS AND PRODUCING EQUIPMENT LINE OF PRESS FORMED PRODUCT 审中-公开
公开(公告)号：US20170291208A1
公开(公告)日：2017-10-12
申请号：US15511743
申请日：2015-09-29
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi NISHIMURA , Yoshiaki NAKAZAWA , Toru YONEBAYASHI , Koichi SATO
IPC分类号： B21D22/26 , B21D47/01 , B21D22/10 , B21D5/01 , B21D24/06
CPC分类号： B21D22/26 , B21D5/01 , B21D22/06 , B21D22/10 , B21D24/00 , B21D24/06 , B21D47/01
摘要： A producing method of the press formed product includes a preparation step of preparing a metal sheet as a starting material; and a press working step of performing press working on the starting material. The press working step includes: during a time period from when pushing-in of the starting material into the die by the punch is started or immediately thereafter until the pushing-in of the punch with respect to the die reaches a predetermined distance short of a bottom dead point for the pushing-in, holding the pad at a position distant from the punch by the predetermined distance; when the pushing-in of the punch with respect to the die reaches the predetermined distance short of the bottom dead point, receiving the pad in the die; and continuing the pushing-in of the punch with respect to the die and the pad to the bottom dead point.

6. 发明申请

US20160279692A1 METHOD AND PRESS-FORMING APPARATUS FOR MANUFACTURING STRUCTURAL MEMBER FOR AUTOMOTIVE BODY 审中-公开
标题翻译：制造汽车结构构件的方法和压力成型装置
公开(公告)号：US20160279692A1
公开(公告)日：2016-09-29
申请号：US14913851
申请日：2014-09-10
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Yasuhiro ITO , Ryuichi NISHIMURA , Kenichiro OTSUKA , Yoshiaki NAKAZAWA
IPC分类号： B21D22/26 , B21D53/88 , B21D5/16
摘要： To reduce the generation of cracking in the edge of the ridge flange (7a, 7b) and wrinkling near the base of the ridge flange and can suppress an increase in the pad load, while press forming the structural member (1) that is made of a high-tensile steel sheet or a thick steel sheet and that has a substantially gutter-shaped cross section and an outward continuous flange in an end of the structural member.A method for manufacturing the structural member (1), the method including: a first step in which the pad (15, 15A, 15B, 15C, 21) presses the forming material (16) against the punch (13) to raise a portion corresponding to a flange to be formed in ends of at least the gutter bottom (2) and the ridge (3a, 3b) in a direction opposite to the pressing direction, the pad (15, 15A, 15B, 15C, 21) bends an end of a portion to be formed into the ridge (3a, 3b) in the pressing direction and restrains at least a part of the end, and the punch (13) and the die (14) carry out press forming to form an intermediate product while a region other than an end in a portion to be formed into the gutter bottom (2) remains unrestrained.
摘要翻译：一种制造结构件（1）的方法，该方法包括：第一步骤，其中衬垫（15,15A，15B，15C，21）将成形材料（16）压靠在冲头（13）上以使部分对应于在与所述按压方向相反的方向上形成在至少所述沟槽底部（2）和所述脊（3a，3b）的端部中的凸缘，所述垫（15,15A，15B，15C，21）在压制方向上形成为脊（3a，3b）的部分的端部，并且限制端部的至少一部分，并且冲头（13）和模具（14）进行压制成形以形成中间产品而在形成沟槽底部（2）的部分中除了端部之外的区域保持不受限制。

7. 发明申请

US20160193644A1 PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT PRODUCING METHOD, AND PRESS-MOLDED PRODUCT PRODUCING APPARATUS 审中-公开
标题翻译：压制产品，压制产品生产方法和压制产品生产设备
公开(公告)号：US20160193644A1
公开(公告)日：2016-07-07
申请号：US14911587
申请日：2014-08-26
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Yoshiaki NAKAZAWA , Yasuhiro ITO
IPC分类号： B21D22/02
CPC分类号： B21D22/02 , B21D22/20 , B21D22/26 , B21D53/88
摘要： [Object] To provide a press-molded product including an inward continuous flange and capable of improving performance involved with the bonding strength between a reinforcing member and the other member or the rigidity of a vehicle body without forming a notch in a ridge-portion flange so as to prevent a defect generated during a press-molding process.[Solution] Provided is a press-molded product of a metal plate which is formed by a steel plate having a tensile strength of 340 MPa or more and includes a ridge portion extending in a predetermined direction and first and second surface portions respectively extending from both ends of a ridge line formed by the ridge portion, the press-molded product including: an inward continuous flange which is obtained by continuously forming a ridge-portion flange formed inward in an end portion of the ridge portion, a first flange formed inward in at least a part of an area of an end portion of the first surface portion, and a second flange formed inward in at least a part of an area of an end portion of the second surface portion. Regarding a plate thickness of an edge portion of the ridge-portion flange, the ridge-portion flange has a plate thickness distribution in which a plate thickness of a portion of each of areas on both sides of a circumferential center area is equal to or larger than a plate thickness of the center area.
摘要翻译：本发明提供一种包括向内连续凸缘并且能够改善涉及加强构件和另一构件之间的结合强度的性能或车身刚度而不在脊部凸缘中形成切口的加压成型制品以防止在压制成型过程中产生的缺陷。 [解决方案]提供一种金属板的压制成型品，该金属板由拉伸强度为340MPa以上的钢板形成，并且包括沿预定方向延伸的脊部分和分别从两者延伸的第一和第二表面部分由脊部形成的脊线的端部，所述加压成型品包括：向内连续的凸缘，其通过连续地形成在所述脊部的端部内侧形成的脊部凸缘而形成，所述第一凸缘向内形成第一表面部分的端部的区域的至少一部分，以及在第二表面部分的端部的至少一部分区域中向内形成的第二凸缘。关于脊部法兰的边缘部的板厚，脊部凸缘具有平板厚度分布，其中圆周中心区域两侧的每个区域的一部分的板厚度等于或大于比中心区域的板厚度。

8. 发明申请

US20150367392A1 MANUFACTURING METHOD OF PRESS-FORMED MEMBER AND PRESS FORMING APPARATUS 有权
标题翻译：压制成型制品的制造方法和压制成型装置
公开(公告)号：US20150367392A1
公开(公告)日：2015-12-24
申请号：US14765762
申请日：2014-03-20
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Ryuichi NISHIMURA , Yoshiaki NAKAZAWA , Kenichiro OTSUKA
IPC分类号： B21D5/02
CPC分类号： B21D5/0209 , B21D5/01 , B21D19/08 , B21D22/20 , B21D53/88
摘要： In a press forming step of obtaining, from a blank (300) of high-tensile strength steel sheet of 390 MPa or more, a press-formed product with a shape of cross section having at least a groove bottom part (101), ridge line parts (102), and vertical wall parts (103), and in which an outward flange (106) including parts (106a) along the ridge line parts (102) is formed at an end part in a longitudinal direction, forming of parts to be formed to the ridge line parts (102) is started by creating a state where a region (300a) positioned at least at an end portion in a longitudinal direction of a part to be formed to the groove bottom part (101) of the blank (300) is separated from a punch top part (201b), and at that time or thereafter, the region (300a) is made to approach the punch top part (201b). Accordingly, when the forming of the ridge line parts (102), and in accordance with that, the forming of the parts (106a) of the outward flange (106) are conducted, the parts are formed relatively moderately from the start to the middle of the press forming, to thereby reduce or prevent an occurrence of stretch flange fracture and a generation of wrinkling.
摘要翻译：在从390MPa以上的高强度钢板坯（300）获得具有至少具有槽底部（101）的截面形状的压制成形品的压制成形工序中，线部分（102）和垂直壁部分（103），并且其中包括沿着脊线部分（102）的部分（106a）的向外的凸缘（106）形成在纵向方向上的端部处，形成部件通过产生形成至少位于要形成的部分的纵向方向上的端部的区域（300a）的状态来形成到脊线部分（102）的状态，坯料（300）与冲压顶部（201b）分离，此时或之后，使区域（300a）接近冲头顶部（201b）。因此，当形成脊线部分（102），并且根据该方式形成对向凸缘（106）的部分（106a）时，部件从起始到中间相对适当地形成的压力成形，从而减少或防止拉伸凸缘断裂的发生和起皱的产生。

9. 发明申请

US20200306866A1 RESISTANCE SPOT WELDING APPARATUS AND METHOD FOR MANUFACTURING A WELDED STRUCTURE 审中-公开
公开(公告)号：US20200306866A1
公开(公告)日：2020-10-01
申请号：US16901765
申请日：2020-06-15
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Yoshiaki NAKAZAWA , Tohru Okada , Yasuhiro Ito , Masanori Yasuyama , Yasunori Sawa
IPC分类号： B23K11/16 , C22C38/38 , B23K11/11 , B23K11/30 , C22C38/02 , B23K11/31 , C22C38/00 , C22C38/18 , C22C38/06 , C22C38/04 , B23K35/02 , F16B5/08
摘要： There is provided a resistance spot welding apparatus including a first rod-shaped electrode body, second rod-shaped electrode body, first ring-shaped member, second ring-shaped member, first elastic body, and second elastic body. The first rod-shaped electrode body and second rod-shaped electrode body are arranged facing each other, the first rod-shaped electrode body is inserted into a through hole of the first ring-shaped member, the first elastic body is connected to an opposite side of first ring-shaped member to second rod-shaped electrode body side, the first rod-shaped electrode body and first ring-shaped member are not electrically connected to each other, the second rod-shaped electrode body is inserted into a through hole of the second ring-shaped member, the second elastic body is connected to an opposite side of second ring-shaped member to first rod-shaped electrode body side, and the second rod-shaped electrode body and second ring-shaped member are not electrically connected each other.

10. 发明申请

US20190105697A1 PRESS-MOLDED PRODUCT, PRESS-MOLDED PRODUCT PRODUCING METHOD, AND PRESS-MOLDED PRODUCT PRODUCING APPARATUS 审中-公开
公开(公告)号：US20190105697A1
公开(公告)日：2019-04-11
申请号：US16155222
申请日：2018-10-09
申请人： NIPPON STEEL & SUMITOMO METAL CORPORATION
发明人： Yoshiaki NAKAZAWA , Yasuhiro ITO
IPC分类号： B21D22/02 , B21D53/88 , B21D22/20 , B21D22/26
摘要： The objective is to provide a press-molded product including an inward continuous flange and capable of improving performance involved with the bonding strength between a reinforcing member and the other member or the rigidity of a vehicle body without forming a notch in a ridge-portion flange so as to prevent a defect generated during a press-molding process. Provided is a press-molded product of a metal plate which is formed by a steel plate having a tensile strength of 340 MPa or more and includes a ridge portion extending in a predetermined direction and first and second surface portions respectively extending from both ends of a ridge line formed by the ridge portion, the press-molded product including: an inward continuous flange which is obtained by continuously forming a ridge-portion flange formed inward in an end portion of the ridge portion, a first flange formed inward in at least a part of an area of an end portion of the first surface portion, and a second flange formed inward in at least a part of an area of an end portion of the second surface portion. Regarding a plate thickness of an edge portion of the ridge-portion flange, the ridge-portion flange has a plate thickness distribution in which a plate thickness of a portion of each of areas on both sides of a circumferential center area is equal to or larger than a plate thickness of the center area.

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