-
公开(公告)号：US20230256495A1
公开(公告)日：2023-08-17
申请号：US18017125
申请日：2021-06-28
Applicant: POSCO Co., Ltd
Inventor： Hong-Gee Kim , Hyun-Sung Son
Abstract: Provided are a method and apparatus for manufacturing hot press formed parts for a multi-step process, the method comprising: a heating step for heating a strip material; a transferring step for transferring the heated strip material to a processing apparatus having mounted on a press a plurality of molds comprising a notching mold and/or a blanking mold, a forming mold, and a trimming mold; a notching step, for obtaining a notched material connected to the strip by means of a web portion by cutting a part of the material by means of the notching mold, and/or a blanking step for obtaining a blanked material separated from the strip by cutting a part of the material by means of the blanking mold; a forming step of transferring and positioning the material which has gone through the notching step and/or the blanking step near the forming mold, and then forming the material by means of the forming mold; and a trimming step for removing, by means of the trimming mold, an outer edge portion of the material which is unnecessary for a final product shape.
-
公开(公告)号：US20230234118A1
公开(公告)日：2023-07-27
申请号：US18190720
申请日：2023-03-27
Applicant: Brother Kogyo Kabushiki Kaisha
Inventor： Ryosuke Sakai , Tomoya Yamamoto , Ayaka Ohira
CPC classification number: B21D22/022 , B65H37/002 , B65H20/02 , B65H43/00 , B44C1/1729 , B21D37/16 , B65H7/20 , B65H27/00 , B65H29/125
Abstract: A foil transfer device which transfers foil onto a sheet is disclosed herein. When a nip/release mechanism moves a first roller and starts causing a foil film to be pressed against a confined surface region on a sheet, located apart from a leading edge of the sheet, a controller executes: a first process of causing a conveyor roller to start conveyance of the sheet, while the first roller is positioned in a separate position; a second process of causing the conveyor roller to stop conveyance of the sheet before a foil transfer area reaches a transfer position; a third process of causing the nip/release mechanism to start moving the first roller from the separate position to a nipping position while the conveyance of the sheet is stopped; and a fourth process of causing the conveyor roller to restart conveyance of the sheet before the first roller reaches the nipping position.
-
13.发明公开公开(公告)号：US20230173567A1
公开(公告)日：2023-06-08
申请号：US17603954
申请日：2021-07-23
Applicant: Harbin Institute of Technology
Inventor： Shijian Yuan , Wei Liu
CPC classification number: B21D37/10 , B21D22/22 , B21D22/205 , B21D37/16 , B21D51/44
Abstract: Disclosed are an apparatus and a method for deep drawing of large-sized thin-wall curved surface parts with servo reverse bulging, which pertain to the technical field of drawing of a thin-wall curved surface part. The apparatus includes a forming die, a jacking unit, and a power unit, wherein the forming die includes an upper die, a lower die, and a blank holder. The upper die and the blank holder are connected to a press machine, the blank holder is disposed above the lower die, and a blank to be drawn is placed between the lower die and the blank holder; the jacking unit is disposed inside the lower die and adapted to move along a moving direction of the upper die, enabling the blank to be drawn to deform by with reverse bulging. The method can inhibit defects of wrinkling and cracking in drawing processes effectively.
-
公开(公告)号：US20190240716A1
公开(公告)日：2019-08-08
申请号：US16234371
申请日：2018-12-27
Applicant: Shijian Yuan
Inventor： Shijian Yuan
Abstract: A frozen forming method for a large-size thin-walled aluminum alloy component using an aluminum alloy tailor-welded plate is described. An aluminum alloy tailor-welded plate is cooled to a temperature with a cryogenic fluid medium, and temperature of a weld zone is regulated to be lower than that of a base metal zone; and the component is fabricated by a tool integrally with aluminum alloy tailor-welded plate, by placing aluminum alloy tailor-welded plate onto tool; assembling tool and filling with cryogenic fluid medium so temperature of tool is −150 to −196 degrees Celsius; and apply pressure to deform the aluminum alloy tailor-welded plate when temperature of a weld zone reaches −150 degrees Celsius to −196 degrees Celsius, thereby facilitating forming the aluminum alloy tailor-welded plate to a designed shape of the aluminum alloy component; and disassembling the tool, and taking out the aluminum alloy component.
-
15.发明申请公开(公告)号：US20180312947A1
公开(公告)日：2018-11-01
申请号：US16027424
申请日：2018-07-05
Inventor： Toshio MURAKAMI , Junya Naitou , Keisuke Okita , Shushi Ikeda
IPC: C22C38/54 , C21D8/00 , C21D1/673 , C21D9/48 , C22C38/50 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/34 , C22C38/38 , C22C38/04 , C22C38/20 , C22C38/32 , C22C38/28 , C22C38/14 , C22C38/06 , C22C38/02 , C22C38/00
CPC classification number: C22C38/54 , B21D22/208 , B21D37/16 , C21D1/18 , C21D1/673 , C21D8/005 , C21D9/48 , C21D2211/001 , C21D2211/002 , C21D2211/004 , C21D2211/008 , C21D2221/00 , C21D2221/10 , C22C38/001 , C22C38/002 , C22C38/02 , C22C38/04 , C22C38/06 , C22C38/14 , C22C38/20 , C22C38/22 , C22C38/24 , C22C38/26 , C22C38/28 , C22C38/32 , C22C38/34 , C22C38/38 , C22C38/50 , C22C38/60
Abstract: A steel sheet for hot pressing use according to the present invention has a specified chemical component composition, wherein some of Ti-containing precipitates contained in the steel sheet, each of which having an equivalent circle diameter of 30 nm or less, have an average equivalent circle diameter of 3 nm or more, the precipitated Ti amount and the total Ti amount in the steel fulfill the relationship represented by formula (1) shown below, and the sum total of the fraction of bainite and the fraction of martensite in the metal microstructure is 80 area % or more. Precipitated Ti amount (mass %)−3.4[N]>0.5×[total Ti amount (mass %)−3.4[N]] (1) (In the formula (1), [N] represents the content (mass %) of N in the steel.)
-
Patent Agency Ranking
公开(公告)号：US20180141098A1
公开(公告)日：2018-05-24
申请号：US15568022
申请日：2016-04-22
Applicant: MAGNA INTERNATIONAL INC.
Inventor： Mark Anthony FABISCHEK
CPC classification number: B21D22/208 , B21D37/16 , B21D53/88
Abstract: A forming system includes a first die, a second die, and a cooling system. A sintered material is formed on opposing portions of the first and second die surfaces to form a relatively low thermal conductive die region. The first die and the second die have opposing, relatively high thermal conductive surfaces to form a relatively high thermal conductive die region. The cooling system is disposed in a thermal conductive relation with the relatively high thermal conductive surfaces. The sintered material on the opposing portions of the first and the second die surfaces cooperate to be on opposite sides of the work piece received in the die cavity. Portions of the work piece in direct contact with the sintered material are cooled at a cooling rate slower than that of portions of the work piece that are in direct contact with the relatively high thermal conductive surfaces.
-
17.发明申请公开(公告)号：US20180099324A1
公开(公告)日：2018-04-12
申请号：US15421981
申请日：2017-02-01
Applicant: Aethra Sistemas Automotivos S/A
Inventor： Pietro SPORTELLI
CPC classification number: B21D22/022 , B21D22/20 , B21D37/16 , C21D1/40 , C21D1/42 , C21D1/673 , C21D9/46 , Y02P10/253
Abstract: A production process for stamped parts carried out from bales of sheets (1), a first moving robot (2), a heating device (3) with a liquid cooling unit (4), a second moving robot (4), a hydraulic press (5) with a specific molding tool, a third moving robot (6), and a conveyor belt (8), controlled by an electronic control unit. Said specific molding tool is provided with channels for cooling done through heat exchange, via water circulation, where the cooling rate is controlled by means of the liquid's flow and temperature control.
-
18.发明申请公开(公告)号：US20180021833A1
公开(公告)日：2018-01-25
申请号：US15642990
申请日：2017-07-06
Applicant: TOA Industries Co., Ltd.
Inventor： Yasutaka SUZUKI , Tadashi IWANUMA , Satoshi MIZUSHINA
CPC classification number: B21D22/022 , B21D37/16 , B21D39/031
Abstract: The invention provides a hot press machine which reduces the cooling time of a superposed member and enhances the productivity. A hot press machine of the invention includes a first die, a second die disposed on the first die, a first refrigerant flow passage for guiding a refrigerant into the first die or the second die, a plurality of grooves formed in a press forming surface of the first die or the second die, and a second refrigerant flow passage for guiding a refrigerant into the grooves. The hot press machine performs press forming and quenching by pressing a superposed member between the first die and the second die, the superposed member comprising a first steel sheet and a second steel sheet superposed and joined on the first steel sheet.
-
公开(公告)号：US09815108B2
公开(公告)日：2017-11-14
申请号：US15179791
申请日：2016-06-10
Applicant: Tom Hyde
Inventor： Tom Hyde
CPC classification number: B21J9/06 , A61F2/95 , A61F2/958 , A61F2002/9522 , B21D26/055 , B21D37/16 , B21J9/02
Abstract: A radial compression mechanism includes a plurality of die, each of the plurality of die have a wedge shaped tip. The dies are arranged around a common central axis so that the wedge shaped tips form an elongated central cavity and move between an expanded position and a contracted position. Each die includes a fluid duct extending lengthwise through the die proximate the wedge-shaped tip. Each fluid duct includes an inlet fluid port and an outlet fluid port. The fluid ducts are connected in parallel by a fluid supply manifold connected to each inlet fluid port of each die by an inlet conduit, and a fluid return manifold connected to each outlet fluid port of each die by an outlet conduit.
-
公开(公告)号：US09802238B2
公开(公告)日：2017-10-31
申请号：US14431665
申请日：2013-09-26
Applicant: NISSHIN STEEL CO., LTD.
Inventor： Katsunari Norita , Norimasa Miura
CPC classification number: B21D24/16 , B21D22/208 , B21D33/00 , B21D37/16 , C22C38/18 , Y10T29/30 , Y10T29/301
Abstract: An austenitic stainless steel foil 2 with a thickness equal to or less than 300 μm is disposed to face a punch 12, and the stainless steel foil 2 is subjected to drawing in a state in which an annular region 2a of the stainless steel foil 2 that is in contact with a shoulder portion 12d of the punch 12 is set to a temperature up to 30° C. and an external region 2b outside the annular region 2a is set to a temperature of from 40° C. to 100° C.
-
-
-
-
-
-
-
-
-
Search Results
607
records
(took 0.02 seconds)
