公开(公告)号：US20230415213A1

公开(公告)日：2023-12-28

申请号：US18039341

申请日：2021-11-08

Applicant: SMS group GmbH

Inventor： Mario THOME ,  Regine AHREM ,  Jochen VOCHSEN

IPC: B21D5/01 ,  B21C37/08

CPC classification number: B21D5/015 ,  B21C37/0815

Abstract: A method for producing open-seam pipes from flat metal products, in particular sheet metal, includes a plurality of individual bending steps using at least one bending tool and at least one externally located lower tool. A plurality of positions of individual bending steps and the insertion depth of the bending tool are calculated in advance. Based thereon the flat metal product is then shaped step-by-step to form the open-seam pipe. After each of the bending steps, a target/actual comparison of the distance between two edges and/or between one of the two edges and the axial center line of the flat metal product is carried out. In case of a deviation, a correction value for the subsequent bending step is determined using a correction algorithm so as then to adapt the insertion depth for the bending tool.

公开(公告)号：US20230264246A1

公开(公告)日：2023-08-24

申请号：US18309168

申请日：2023-04-28

Applicant: Shape Corp.

Inventor： Douglas S. Baas ,  Joseph R. Matecki ,  Shawn R. Jasman

IPC: B21D5/08 ,  B21C37/08 ,  B60R19/02 ,  B60R19/03 ,  B60R19/18

CPC classification number: B21D5/086 ,  B21C37/08 ,  B60R19/023 ,  B60R19/03 ,  B60R19/18 ,  B60R2019/1826 ,  B22F10/28

Abstract: A multi-tubular beam for a vehicle, such as a vehicle structure or a bumper reinforcement, includes an elongated beam formed with a metal sheet. The metal sheet has a central section and outer sections extending along a length of the metal sheet. The outer sections are disposed in opposing directions from the outer edges of the central section to provide adjacent first and second tubular portions. The central section forms a common center wall between the adjacent first and second tubular portions. A first edge portion of the metal sheet is disposed along and in parallel alignment with the center wall. The first edge portion is attached to the center wall at a first weld joint to form the first tubular portion. The first weld joint includes a weld material that extends through a thickness of the center wall and into a thickness of the first edge portion.

公开(公告)号：US11724298B1

公开(公告)日：2023-08-15

申请号：US17865045

申请日：2022-07-14

Applicant: Dalian University of Technology

Inventor： Ying Sun ,  Shijian Yuan

IPC: B21C37/08 ,  B32B15/01 ,  F16L9/02 ,  F16L9/19

CPC classification number: B21C37/08 ,  B32B15/017 ,  F16L9/02 ,  F16L9/19

Abstract: A forming method of a nickel aluminum (NiAl) alloy tubular part with micro flow channels including preparing a laminated tube blank. A step of fixing aluminum wires to an outer surface of the laminated tube blank to prepare a middle tube blank. A step of winding a nickel (Ni) flexible substrate and an Al flexible substrate on an outer surface of the middle tube blank to prepare a composite tube blank. A step of carrying out hot gas forming on the composite tube blank to prepare a composite tubular part. A step of carrying out in-mold first-stage reaction synthesis to make the Ni flexible substrate chemically react with the aluminum (Al) flexible substrate. A step of carrying out in-mold second-stage reaction synthesis to melt all the aluminum wires. A step of carrying out hot isostatic pressing treatment to prepare the NiAl alloy tubular part with the micro flow channels.

公开(公告)号：US11707773B2

公开(公告)日：2023-07-25

申请号：US16493718

申请日：2018-01-31

Applicant: BAOSHAN IRON & STEEL CO., LTD.

Inventor： Sihai Jiao ,  Bo Yan ,  Cheng Zhou

IPC: B21C37/08 ,  B21B1/38 ,  B21C37/06 ,  B21C37/30 ,  B23K13/02 ,  B23K31/02

CPC classification number: B21C37/08 ,  B21B1/38 ,  B21C37/065 ,  B21C37/30 ,  B23K13/025 ,  B23K31/027 ,  B21B2001/383

Abstract: A method for manufacturing a clad steel pipe is provided, wherein the clad steel pipe is manufactured by using a clad steel plate as a raw material. The clad steel plate comprises a base layer (1) and a clad layer (2) roll-bonded with the base layer (1). The method for manufacturing a clad steel pipe comprises the steps of forming, welding, and deburring; both sides of the clad steel plate are bent towards the base layer (1) side of the clad steel plate, then the forming step is carried out, and after the forming step, the opening faces of the resultant pipe blank are all in a form of the clad layer (2). According to the method for manufacturing a clad steel pipe, a clad steel pipe is manufactured by using a clad steel plate as a raw material. Thus, continuance and high efficiency of a high-frequency longitudinal welding pipe unit is fully utilized, subsequent non-continuous processes are not necessary, and the corrosion resistance at the weld of the clad steel pipe is ensured.

公开(公告)号：US20230141285A1

公开(公告)日：2023-05-11

申请号：US17910993

申请日：2021-03-15

Applicant: JFE STEEL CORPORATION

Inventor： Ryo NAKAZAWA ,  Hiroyuki SHIROSAWA ,  Shinsuke IDE

IPC: F16L9/17 ,  B21C37/08 ,  B21C37/30 ,  B21D5/12

CPC classification number: F16L9/17 ,  B21C37/0807 ,  B21C37/30 ,  B21D5/12

Abstract: An electric resistance welded steel pipe having excellent formability and torsional fatigue resistance and a method for manufacturing the same. The electric resistance welded steel pipe includes a seam region and a base metal region, the seam region having a range of ±10 degrees in a pipe circumferential direction with respect to an electric resistance welded seam formed in a pipe longitudinal direction, the base metal region being a region other than the seam region. The electric resistance welded steel pipe has an r-value in the pipe longitudinal direction of 1.0 or greater, H (mm) and W (mm) satisfy a specified formula, and Ts(MAX) (mm) and Tb(Ave) (mm) satisfy a specified formula.

公开(公告)号：US20230113975A1

公开(公告)日：2023-04-13

申请号：US17964142

申请日：2022-10-12

Applicant: DREISTERN GmbH & Co. KG

Inventor： Tilman TRAUB ,  Christoph GRÜLLICH

IPC: B21C37/08 ,  B21D5/08 ,  B21C51/00

Abstract: A method for joining edges and/or surfaces of a profile in a profiling installation for longitudinally forming a virtually endless material strip into an at least partially closed profile shape. The material strip or profile is formed roll forming tools into a profile which is closed or partially closed, and is fixed in a joining zone, with a longitudinally running joining seam being formed. The profile passes in the joining zone through a joining roller arrangement and/or planar joining arrangement to feed the profile to a joining point and to stabilize the profile there, and/or to ensure that it is dimensionally stable during and after joining. Forces or magnitudes of force components which act on the profile from at least one of the joining rollers and/or a subsection of the planar joining arrangement are detected in the joining zone. A planar joining arrangement and a profiling installation are also provided.

公开(公告)号：US20230060627A1

公开(公告)日：2023-03-02

申请号：US17759227

申请日：2021-01-28

Applicant: Outokumpu Oyj

Inventor： Stefan LINDNER

IPC: B60R19/34 ,  B60R19/03 ,  B21C37/08 ,  B21C37/16

Abstract: The present invention relates to a motor vehicle crash box with a working direction in vehicle's longitudinal axis manufactured out of a tube which is expanded into different zones, wherein the zones are different in strength and diameter by using steel after forming a homogenous austenitic microstructure with a strain hardening effect. The present invention further relates to the manufacturing method of such a component.

公开(公告)号：US20220373108A1

公开(公告)日：2022-11-24

申请号：US17771864

申请日：2020-10-02

Applicant: JFE Steel Corporation

Inventor： Akihide Matsumoto ,  Shinsuke Ide ,  Takatoshi Okabe

IPC: F16L9/17 ,  B21C37/08 ,  C22C38/04 ,  C22C38/06 ,  C22C38/02 ,  C21D8/10 ,  C21D8/12 ,  C21D9/08

Abstract: An electric resistance welded steel pipe includes a base metal zone and an electric resistance welded zone. The base metal zone has a predetermined chemical composition and a microstructure including, by volume, ferrite: more than 30%, and bainite: 10% or more. The total volume fraction of the ferrite and the bainite is 70% or more and 95% or less. The balance being one or two or more phases selected from pearlite, martensite, and austenite. Further, when regions surrounded by boundaries between adjacent crystals having a misorientation of 15° or more are defined as crystal grains, the average size of the crystal grains is less than 7.0 μm, and the volume fraction of crystal grains having a size of 40.0 μm or more is 30% or less. A compressive residual stress generated in the inner and outer surfaces of the steel pipe in the axial direction is 250 MPa or less.

公开(公告)号：US11504797B2

公开(公告)日：2022-11-22

申请号：US16849710

申请日：2020-04-15

Applicant: Nippon Steel Nisshin Co., Ltd. ,  Nippon Steel Nisshin Pipe Co., Ltd.

Inventor： Kouji Omosako ,  Makoto Akiduki ,  Shigenobu Igawa ,  Yasumasa Makihara ,  Ryota Tanaka

IPC: B23K13/04 ,  B23K9/02 ,  B21C37/08 ,  B21C37/083 ,  C22C38/00 ,  C22C38/02 ,  C22C38/04 ,  C22C38/14 ,  F16L9/02 ,  B23K103/04

Abstract: A method for manufacturing an electric resistance welded metal pipe by butting side ends of a metal strip against each other and then welding the side ends by high frequency heating to manufacture an electric resistance welded metal pipe, each side end being provided with an inner surface side corner portion located on an inner surface side of the electric resistance welded metal pipe, the method includes a step of forming an inclined surface at the inner surface side corner portion before butting the side ends of the metal strip, and wherein the side ends are butted and welded to each other such that the inclined surface remains on an excess metal of the metal pipe after electric resistance welding and a discharged metal is not welded to the excess metal.

公开(公告)号：US11484927B2

公开(公告)日：2022-11-01

申请号：US16331222

申请日：2017-08-31

Applicant: JFE STEEL CORPORATION

Inventor： Takatoshi Okabe ,  Atsushi Matsumoto ,  Shinsuke Ide ,  Akihide Matsumoto

IPC: B21C37/08 ,  B23K13/06 ,  C21D9/08 ,  C21D9/50 ,  C22C38/06 ,  C22C38/38 ,  B23K35/38 ,  B23K11/087 ,  B21B1/22 ,  B23K11/00 ,  C22C38/04 ,  F16L9/18 ,  C22C38/00 ,  C21D6/00 ,  B32B15/01 ,  C22C38/12 ,  C22C38/02 ,  C22C38/14 ,  B21C37/14 ,  B23K11/16 ,  B23K11/34 ,  F16L9/17 ,  C22C38/40 ,  B23K101/06 ,  B23K103/04 ,  B23K103/18 ,  B23K101/34 ,  B23K101/18

Abstract: Provided is a clad welded pipe or tube that has improved pipe or tube mechanical properties by reducing the width of a weld without its function as a clad pipe or tube being impaired. A clad welded pipe or tube comprises: a first layer made of base metal; and a second layer placed on one surface of the first layer, and made of first cladding metal that is a material different from the base metal, wherein a pipe or tube circumferential length L1 of weld metal at a pipe or tube inner surface and a pipe or tube circumferential length L2 of the weld metal at a pipe or tube outer surface in a weld are each 0.0010 mm or more and 1.0 mm or less, and the base metal is not exposed at a first cladding metal-side surface of the clad welded pipe or tube in the weld.