Nothing Special   »   [go: up one dir, main page]

US20170333971A1 - Method for producing a component by subjecting a sheet bar of steel to a forming process - Google Patents

Method for producing a component by subjecting a sheet bar of steel to a forming process Download PDF

Info

Publication number
US20170333971A1
US20170333971A1 US15/523,191 US201515523191A US2017333971A1 US 20170333971 A1 US20170333971 A1 US 20170333971A1 US 201515523191 A US201515523191 A US 201515523191A US 2017333971 A1 US2017333971 A1 US 2017333971A1
Authority
US
United States
Prior art keywords
plate
forming
heating
component
heat treatment
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Abandoned
Application number
US15/523,191
Other languages
English (en)
Inventor
Ingwer Denks
Stefan Mütze
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Salzgitter Flachstahl GmbH
Original Assignee
Salzgitter Flachstahl GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Salzgitter Flachstahl GmbH filed Critical Salzgitter Flachstahl GmbH
Assigned to SALZGITTER FLACHSTAHL GMBH reassignment SALZGITTER FLACHSTAHL GMBH ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: DENKS, INGWER, MÜTZE, Stefan
Publication of US20170333971A1 publication Critical patent/US20170333971A1/en
Abandoned legal-status Critical Current

Links

Images

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/005—Modifying the physical properties by deformation combined with, or followed by, heat treatment of ferrous alloys
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/022—Stamping using rigid devices or tools by heating the blank or stamping associated with heat treatment
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
    • B21D22/02—Stamping using rigid devices or tools
    • B21D22/04—Stamping using rigid devices or tools for dimpling
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D28/00—Shaping by press-cutting; Perforating
    • B21D28/02—Punching blanks or articles with or without obtaining scrap; Notching
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D35/00—Combined processes according to or processes combined with methods covered by groups B21D1/00 - B21D31/00
    • B21D35/001—Shaping combined with punching, e.g. stamping and perforating
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D53/00—Making other particular articles
    • B21D53/88—Making other particular articles other parts for vehicles, e.g. cowlings, mudguards
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/02—Hardening articles or materials formed by forging or rolling, with no further heating beyond that required for the formation
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26—Methods of annealing
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00—Modifying the physical properties of iron or steel by deformation
    • C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/002—Bainite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2211/00—Microstructure comprising significant phases
    • C21D2211/008—Martensite
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2221/00—Treating localised areas of an article
    • C21D2221/02—Edge parts
    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D2261/00—Machining or cutting being involved

Definitions

  • the invention relates to a method for producing a component by forming a plate made of steel, according to the preamble of patent claim 1 , which enables a high formability of strain hardened, mechanically separated plate edges.
  • component means a component made from a metal plate by forming with a forming tool at room temperature.
  • Metal materials that can be used include all formable metal materials, in particular however steel.
  • the metal plates can be uncoated or can be provided with a metallic and/or organic anti-corrosion coating.
  • Such components are mainly used in vehicle body construction but also in the home appliance industry, machine construction or building industry.
  • Raw material suppliers are trying to address the demands placed on materials by providing high-strength and ultra-high strength steels, which allows reducing wall thicknesses while at the same time offering improved component properties during manufacture and operation.
  • a metal plate is first cut to size from hot or cold strip at room temperature.
  • Cutting methods used for this purpose mostly include mechanical separation processes such as shearing or punching, less frequently also thermal separation processes such as laser cutting. Thermal separation methods are significantly more expensive compared to mechanical separation methods and are therefore only used in exceptional cases.
  • the cut plate After being cut to size the cut plate is placed into a forming tool and the finished component, such as for example a vehicle chassis, is produced in a single- or multi-step forming process.
  • the finished component such as for example a vehicle chassis
  • the cut edges are subjected to particularly high stress, in particular when being bent up or upwards, for example during flanging operations in punched plates.
  • the mentioned prior damages at the plate edges may lead to premature failure in subsequent forming operations or during operation of the component.
  • the testing of the forming characteristics of cut plate edges with regard to their sensitivity for edge crack formation is performed with a hole expansion test according to ISO 16630.
  • the measuring variable is the change of the hole diameter with respect to the starting diameter, at which hole diameter the first crack occurs at the border of the hole.
  • the method is simple and cost-effective and achieves comparable and/or improved properties on one hand regarding production, in particular with regard to the formability of the cut edges, and on the other hand in the component in particular with regard to the static strength.
  • this object is solved by a method for producing a component by forming a plate made of steel at room temperature, which has a high formability and reduced crack sensitivity of edges that are mechanically cut or punched on the plate, in which method the plate is cut to size beforehand from a strip or plate at room temperature, wherein depending on the situation at hand further manufacturing steps, such as for example punching or cutting operations for generating recesses or perforation on the sheet metal or the plate are performed at room temperature and subsequently the thusly prepared plate is formed in one or multiple steps into a component at room temperature, which method is characterized in that independent of the forming into a component and at an arbitrary time point after the cutting to size and possible further punching or cutting operations the edge regions of the metal plate that have been strain hardened by the cutting or punching operations and which are subjected to a subsequent cold forming during the production of the component, are heated to a temperature of at least 600° C. and the time of the heat treatment is less than 10 seconds.
  • Tests have shown that for improving the hole expansion capability it is not required to perform the cutting process itself at an increased temperature of the cut edge regions, but that it is sufficient to only heat the strain hardened, shear-impacted cut edge regions for a surprisingly short period of time within the range of less than 10 seconds, usually between 0.1 and 2 seconds to a temperature of at least 600° C. According to the invention this can be performed independent of the cutting or punching process and the following production steps, at an arbitrary time point prior to the forming into a component.
  • the heat influence hereby acts over the entire sheet thickness and in plane direction of the plate in a region, which corresponds at most to the sheet thickness.
  • the duration of the heat influence depends on the type of the heat treatment method.
  • the heating itself can be performed in any manner, for example conductively inductively via radiation heating or by means of laser processing.
  • Very well suited for the heat treatment is the conductive heating for example as used in automobile manufacturing, for example in spot welding.
  • a spot welding machine with a relatively short impact time is suited for holes punched in the plate, whereas for treating longer edge sections the inductive method, radiation heating or laser processing with longer impact times are useful.
  • an advantageous embodiment of the invention provides to rinse these regions with inert gases, for example argon.
  • inert gases for example argon.
  • the rinsing with inert gas is hereby performed during the duration of the heat treatment, however if required it can also be additionally already be performed prior to the start of the heat treatment and/or within a limited period of time after the heat treatment.
  • the heat treatment is carried out in a very concentrated manner in the shear-impacted cut edge regions and is therefore associated with a relatively small energy investment, in particular compared to methods in which the entire metal plate is heated or in which a stress relief annealing is used which is more time-intensive by orders of magnitude.
  • the process window for the temperature to be reached in the cut edge region is very wide and includes a temperature range of above 600° C. up to the solidus temperature of about 1500° C.
  • a microstructure transformation with a hardness and a strength increase usually associated therewith usually has no adverse effect on the hole expansion capability, independent of whether a less hard or less tenacious microstructure forms, so that also treatment temperatures of the cut edges up to the solidus temperature limit are possible. The important factor remains in each case that the strain hardening introduced by the cutting is eliminated to the most degree.
  • the method according to the invention has the advantage that as a result of the heat treatment only the shear-impacted edge region undergoes microstructural change and the strength is hereby not reduced but increased.
  • the resistance against edge cracks as manifested by a greater hole expansion capability can thus be improved by a factor of 2 or even by more than 3.
  • the scrap of formed components can be lowered due to the significantly increased formability of the critically shear-impacted plate edge regions and on the other hand currently required joining operations can be dispensed with, for example as a result of the fact that flanging operations can now for example be performed during the formation of bearing sites.
  • the method according to the invention thus enables as a result of the improved forming capability of the cut edge regions more complex component geometries and thus greater constructive freedom using the same material.
  • dual phase microstructures such as for example dual phase microstructures the fatigue strength of the cold formed component is not decreased but increased, because even though the generated microstructure may be harder compared to the starting state it is more homogenous.
  • the heat treatment of the cut edge regions that are to be cold formed can be completely performed at an arbitrary time point after the cutting or punching process and prior to the forming of the plate, or it can be performed as an intermediate step in multistep forming operations in which the plate is formed into a component, so that the process steps cutting or punching of the plate, heat treatment of the cut edges and forming of the plate into a component are completely decoupled from each other.
  • the manufacture is thus significantly more flexible than is possible according to the state of the art with integration of an edge modification by heat treatment.
  • the method can be integrated as intermediate manufacturing step in a serial production, which has a cycle time in the range from 0.1 to 10 seconds.
  • a particularly predestined field of application is thus the manufacture of sheet metal components in the automobile field in multiple subsequent steps.
  • the plate prepared in this way can advantageously be formed with the forming tools that are already present in the production because no additional heating devices such as for example furnaces for heating the plate itself are required. This also contributes to a cost-effective manufacture and as a result of the decoupling of the manufacturing steps enables a high flexibility in the production process.
  • the heating of the cut edges can, however, if determined advantageous also be performed directly after the mechanical cutting or punching process or directly prior to the forming into a component in a working step that is combined with the respective manufacturing step.
  • the cutting and punching devices can be provided with a downstream heat treatment device or the latter can be arranged directly upstream of the forming device for cold forming of the plate.
  • the plate itself can for example be flexibly rolled with different thicknesses or can be joined from cold or hot strip of the same or different thickness and/or grade.
  • the invention can be used for warm or cold rolled steel strips made of soft to high strength steels for example with yield strengths of 140 MPa to 1200 MPa which can be provided with a corrosion-resistant layer as metallic and/or organic coating.
  • the metallic coating can for example be made of zinc or an alloy made of zinc or of magnesium or of aluminum and/or silicone.
  • higher-strength steels all single phase steels but also multiphase steels can be used. This includes micro-alloyed, higher-strength steels as well as bainitic or martensitic steels and also dual-phase steels, complex phase steel and TRIP steels.
  • FIG. 1 a schematic representation of the hole expansion test according to ISO 16630 on cut edge that have been heat treated according to the invention
  • FIG. 2 a test installation for conductive heat treatment of shear-impacted cut edges
  • FIG. 3 results of hole expansion tests according to ISO 16630 on uncoated samples HDT780C after conducive heat treatment of the shear-impacted cut edge
  • FIG. 4 results of hole expansion tests according to ISO 16630 on hot dip coated samples HCT780CD and uncoated samples HDT780C after heat treatment of the shear-impacted cut edges by means of laser
  • FIG. 5 the microstructure and hardness course on cut edges that have been heat treated according to the invention.
  • FIG. 1 schematically shows a hole expansion test according to ISO 16630 on cut edges that have been heat treated according to the invention.
  • the heat treatment is only performed on the shear-impacted cut edges as intermediate step after cutting the plates to size and prior to the forming of regions proximate to the cut edge.
  • the test installation for conductive heat treatment of shear-impacted cut edges is shown in FIG. 2 .
  • step 1 a sheet with a hole punched therein (step 1) is heat treated in the region of the shear-impacted plate edges (step 2). Thereafter in step 3 the actual hole expansion is performed by means of a die, which is then determined at the tested probe.
  • the opposing spot welding electrodes have a diameter, which is greater than the punched-out hole so that the shear-impacted hole edges can be heat treated.
  • the electrodes have a semicircular shape so that on one hand the plate can be easily centered and on the other hand the heat can be introduced in a concentrated manner only in the shear-impacted region.
  • the shape of the contacting electrode tip should be adjusted to the respective geometric configuration of the edge regions.
  • a treatment duration i.e., the duration of the current flow when heating is performed inductively and the duration of the power uptake by the laser or the exposure time to other heat sources is within a range of 20 ms up to at most 10 s, usually however advantageously between 100 ms and 2000 ms. Important in any case is that a temperature of at least 600° C. is reached at the site of the heat treatment.
  • the important method parameters are the treatment duration and in the case of the inductive heating the current, which was varied between 4 and 10 kA.
  • a laser power of 5 kW was first adjusted which was distributed over a circular area of about 12 mm so that approximately a ring shape with 1 mm border width of the cut circular hole of the sample with the diameter of 10 mm was heat treated.
  • FIG. 5 shows in the upper portion of the image on the left hand side a schematic top view onto a hole punched into a metal plate, which was treated according to the invention in the region of the hole edge.
  • the microstructures that form in the heat influenced region are schematically shown in the upper portion of the image on the right hand side.
  • the microstructure In the proximate border regions of about 0.5 mm the microstructure is made of 100% martensite. As a consequence heating of above Ac 3 was performed which was followed by a fast cooling. With increasing distance to the edge the proportion of bainite increases up to a distance to the edge of about 2.5 mm beyond which 100% bainite is present. Above an edge distance of 2.5 trim the microstructure did no longer undergo transformation so that here treatment temperatures below Ac 2 (about 700° C.) were present.
  • the hardness increase ( FIG. 5 , lower partial image) in the proximate region of the hole edge is typical for micro-alloyed bainitic hot strip and results from the subsequent precipitation of nanoparticles in the temperature range of about 500° C.-700° C.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Shaping Metal By Deep-Drawing, Or The Like (AREA)
  • Heat Treatment Of Articles (AREA)
  • Laser Beam Processing (AREA)
  • Metal Rolling (AREA)
US15/523,191 2014-10-31 2015-10-06 Method for producing a component by subjecting a sheet bar of steel to a forming process Abandoned US20170333971A1 (en)

Applications Claiming Priority (3)

Application Number Priority Date Filing Date Title
DE102014016614.7 2014-10-31
DE102014016614.7A DE102014016614A1 (de) 2014-10-31 2014-10-31 Verfahren zur Herstellung eines Bauteils durch Umformen einer Platine aus Stahl
PCT/DE2015/100414 WO2016066155A1 (de) 2014-10-31 2015-10-06 Verfahren zur herstellung eines bauteils durch umformen einer platine aus stahl

Publications (1)

Publication Number Publication Date
US20170333971A1 true US20170333971A1 (en) 2017-11-23

Family

ID=54359651

Family Applications (1)

Application Number Title Priority Date Filing Date
US15/523,191 Abandoned US20170333971A1 (en) 2014-10-31 2015-10-06 Method for producing a component by subjecting a sheet bar of steel to a forming process

Country Status (9)

Country Link
US (1) US20170333971A1 (de)
EP (1) EP3212348B1 (de)
KR (1) KR102469605B1 (de)
CN (1) CN107208170B (de)
DE (1) DE102014016614A1 (de)
ES (1) ES2701869T3 (de)
MX (1) MX2017005563A (de)
RU (1) RU2701810C2 (de)
WO (1) WO2016066155A1 (de)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP3685933A1 (de) * 2019-01-25 2020-07-29 Toyota Jidosha Kabushiki Kaisha Verfahren zur behandlung einer stahlplatte
WO2020175486A1 (ja) * 2019-02-27 2020-09-03 Ｊｆｅスチール株式会社 冷間プレス用の鋼板の製造方法、及びプレス部品の製造方法
US11339479B2 (en) 2016-04-18 2022-05-24 Salzgitter Flachstahl Gmbh Component made of press-form-hardened, aluminum-based coated steel sheet, and method for producing such a component
US11383288B2 (en) * 2019-01-25 2022-07-12 Toyota Jidosha Kabushiki Kaisha Method of processing steel plate and punching machine
US11511330B2 (en) * 2017-12-25 2022-11-29 Jfe Steel Corporation Method for manufacturing press formed product
US11654472B2 (en) 2021-01-13 2023-05-23 Toyota Jidosha Kabushiki Kaisha Forming and processing method

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016121905A1 (de) 2016-11-15 2018-05-17 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Radschüsseln aus Dualphasenstahl mit verbesserter Kaltumformbarkeit
DE102016121902A1 (de) * 2016-11-15 2018-05-17 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung von Fahrwerksteilen aus mikrolegiertem Stahl mit verbesserter Kaltumformbarkeit
DE102017103729A1 (de) 2017-02-23 2018-08-23 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Bauteils durch Weiterformen einer vorgeformten Kontur
DE102017103743A1 (de) * 2017-02-23 2018-08-23 Salzgitter Flachstahl Gmbh Verfahren zur optimierten Herstellung eines Bauteils mit zumindest einem Nebenformelement
CN114555453B (zh) * 2019-11-08 2024-06-14 自动工程有限公司 一种用于车辆框架的成形钣金部件和相应的生产方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20090235715A1 (en) * 2008-03-15 2009-09-24 Elringklinger Ag Method for selectively forming (plastic working) at least one region of a sheet metal layer made from a sheet of spring steel, and a device for carrying out this method
US20100316805A1 (en) * 2008-02-07 2010-12-16 Bluescope Steel Limited Metal-coated steel strip
US20120037279A1 (en) * 2009-03-05 2012-02-16 Delta Tooling Co., Ltd. Structural material
US20160368094A1 (en) * 2014-02-17 2016-12-22 Wisco Tailored Blanks Gmbh Method for Laser Welding One or More Workpieces Made of Hardenable Steel in a Butt Joint

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
RU2063832C1 (ru) * 1994-07-20 1996-07-20 Александр Николаевич Жученко Способ изготовления плоских изделий с выступами типа рельсовых подкладок
DE19619034C2 (de) * 1995-07-18 1998-01-22 Mannesmann Ag Verfahren zur Verbesserung der Umformbarkeit bei der Herstellung von Bauteilen aus Leichtmetallband
US6143241A (en) * 1999-02-09 2000-11-07 Chrysalis Technologies, Incorporated Method of manufacturing metallic products such as sheet by cold working and flash annealing
RU2230621C2 (ru) * 2002-03-26 2004-06-20 Оренбургский государственный университет Способ изготовления гнутых деталей и устройство для его осуществления
DE102004038626B3 (de) * 2004-08-09 2006-02-02 Voestalpine Motion Gmbh Verfahren zum Herstellen von gehärteten Bauteilen aus Stahlblech
DE102009049155B4 (de) 2009-10-12 2017-01-05 Bayerische Motoren Werke Aktiengesellschaft Verfahren zur Ermittlung der Kantenrissempfindlichkeit eines Blechmaterials und Vorrichtung zum Herstellen eines Prüflings aus diesem Blechmaterial
SE1100523A1 (sv) * 2011-07-06 2013-01-02 Gestamp Hardtech Ab Sätt att varmforma och härda ett tunnplåtsämne
RU2566121C1 (ru) * 2011-09-30 2015-10-20 Ниппон Стил Энд Сумитомо Метал Корпорейшн Высокопрочный гальванизированный погружением стальной лист с превосходной характеристикой сопротивления удару и способ его изготовления и высокопрочный, подвергнутый легированию, гальванизированный погружением стальной лист и способ его изготовления
DE102011054865B4 (de) * 2011-10-27 2016-05-12 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugkarosseriebauteils sowie Kraftfahrzeugkarosseriebauteil
DE102011054866A1 (de) * 2011-10-27 2013-05-02 Benteler Automobiltechnik Gmbh Verfahren zur Herstellung eines warmumgeformten und pressgehärteten Kraftfahrzeugkarosseriebauteils sowie Kraftfahrzeugkarosseriebauteil
DE102011121904A1 (de) 2011-12-21 2013-06-27 Volkswagen Aktiengesellschaft Verfahren zur scherenden Bearbeitung von Blechen mit einer anschließenden Umformung sowie ein hierzu bestimmtes Schneidwerkzeug
DE102012006941B4 (de) * 2012-03-30 2013-10-17 Salzgitter Flachstahl Gmbh Verfahren zur Herstellung eines Bauteils aus Stahl durch Warmumformen

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20100316805A1 (en) * 2008-02-07 2010-12-16 Bluescope Steel Limited Metal-coated steel strip
US20090235715A1 (en) * 2008-03-15 2009-09-24 Elringklinger Ag Method for selectively forming (plastic working) at least one region of a sheet metal layer made from a sheet of spring steel, and a device for carrying out this method
US20120037279A1 (en) * 2009-03-05 2012-02-16 Delta Tooling Co., Ltd. Structural material
US20160368094A1 (en) * 2014-02-17 2016-12-22 Wisco Tailored Blanks Gmbh Method for Laser Welding One or More Workpieces Made of Hardenable Steel in a Butt Joint

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US11339479B2 (en) 2016-04-18 2022-05-24 Salzgitter Flachstahl Gmbh Component made of press-form-hardened, aluminum-based coated steel sheet, and method for producing such a component
US11511330B2 (en) * 2017-12-25 2022-11-29 Jfe Steel Corporation Method for manufacturing press formed product
EP3685933A1 (de) * 2019-01-25 2020-07-29 Toyota Jidosha Kabushiki Kaisha Verfahren zur behandlung einer stahlplatte
US11383288B2 (en) * 2019-01-25 2022-07-12 Toyota Jidosha Kabushiki Kaisha Method of processing steel plate and punching machine
US11732317B2 (en) 2019-01-25 2023-08-22 Toyota Jidosha Kabushiki Kaisha Method for processing steel plate
WO2020175486A1 (ja) * 2019-02-27 2020-09-03 Ｊｆｅスチール株式会社 冷間プレス用の鋼板の製造方法、及びプレス部品の製造方法
CN113474100A (zh) * 2019-02-27 2021-10-01 杰富意钢铁株式会社 冷压用的钢板的制造方法及冲压部件的制造方法
JPWO2020175486A1 (ja) * 2019-02-27 2021-12-23 Ｊｆｅスチール株式会社 冷間プレス用の鋼板の製造方法、及びプレス部品の製造方法
JP7276428B2 (ja) 2019-02-27 2023-05-18 Ｊｆｅスチール株式会社 冷間プレス用の鋼板の製造方法、及びプレス部品の製造方法
US11654472B2 (en) 2021-01-13 2023-05-23 Toyota Jidosha Kabushiki Kaisha Forming and processing method

Also Published As

Publication number Publication date
RU2017118583A (ru) 2018-11-30
RU2701810C2 (ru) 2019-10-01
EP3212348B1 (de) 2018-09-12
CN107208170A (zh) 2017-09-26
DE102014016614A1 (de) 2016-05-04
ES2701869T3 (es) 2019-02-26
EP3212348A1 (de) 2017-09-06
RU2017118583A3 (de) 2019-04-24
MX2017005563A (es) 2017-12-14
KR102469605B1 (ko) 2022-11-21
CN107208170B (zh) 2019-06-14
KR20170077192A (ko) 2017-07-05
WO2016066155A1 (de) 2016-05-06

Similar Documents

Publication Publication Date Title
US20170333971A1 (en) Method for producing a component by subjecting a sheet bar of steel to a forming process
JP7299956B2 (ja) プレス焼入れのための鋼板を製造する方法及びプレス焼入れのためのレーザ溶接ブランクを製造する方法
TWI530566B (zh) 超高強度部件的製造方法及使用方法
CN1829816A (zh) 由薄钢板制造硬化零件的方法
US20180216205A1 (en) Two-step hot forming of steels
WO2014181882A1 (ja) 表層細粒化熱間剪断加工方法および表層細粒化熱間剪断加工部品
WO2016106621A1 (en) Method of hot forming a component from steel
US12053815B2 (en) Method for the production of chassis parts from micro-alloyed steel with improved cold formability
RU2743046C1 (ru) Способ производства компонента в результате дополнительной формовки предварительно сформованного контура
JP6927588B2 (ja) ローラーフォーミングされた、部分的に硬化したプロフィールを製作する方法
KR101719446B1 (ko) 프레스 성형품 및 그 제조 방법
JP6043272B2 (ja) プレス成形品の製造方法
CN113474100B (zh) 冷压用的钢板的制造方法及冲压部件的制造方法
Rosenstock et al. MBW 1200–Hot Stamping Steel with Increased Ductility
JP5717024B2 (ja) 薄肉鋼加工品及びその熱処理方法
JPH11189843A (ja) 耐溶融亜鉛めっき割れ性に優れる電縫鋼管及びその製造方法
JPH11189844A (ja) 耐溶融亜鉛めっき割れ性に優れる鉄塔用電縫鋼管及びその製造方法

Legal Events

Date Code Title Description
AS Assignment

Owner name: SALZGITTER FLACHSTAHL GMBH, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:DENKS, INGWER;MUETZE, STEFAN;REEL/FRAME:042599/0955

Effective date: 20170517

STPP Information on status: patent application and granting procedure in general

Free format text: DOCKETED NEW CASE - READY FOR EXAMINATION

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE AFTER FINAL ACTION FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: ADVISORY ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: NON FINAL ACTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STPP Information on status: patent application and granting procedure in general

Free format text: RESPONSE TO NON-FINAL OFFICE ACTION ENTERED AND FORWARDED TO EXAMINER

STPP Information on status: patent application and granting procedure in general

Free format text: FINAL REJECTION MAILED

STCB Information on status: application discontinuation

Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION