US20030066581A1 - Method of making a hardened sheet metal article - Google Patents

Method of making a hardened sheet metal article Download PDF

Info

Publication number
US20030066581A1
US20030066581A1 US10/262,586 US26258602A US2003066581A1 US 20030066581 A1 US20030066581 A1 US 20030066581A1 US 26258602 A US26258602 A US 26258602A US 2003066581 A1 US2003066581 A1 US 2003066581A1
Authority
US
United States
Prior art keywords
blank
sheet metal
passage
metal article
press mold
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
US10/262,586
Inventor
Ludger Gehringhoff
Udo Klasfauseweh
Carsten Jakel
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.)
Benteler Automobiltechnik GmbH
Original Assignee
Benteler Automobiltechnik 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 Benteler Automobiltechnik GmbH filed Critical Benteler Automobiltechnik GmbH
Assigned to BENTELER AUTOMOBILTECHNIK GMBH & CO. KG reassignment BENTELER AUTOMOBILTECHNIK GMBH & CO. KG ASSIGNMENT OF ASSIGNORS INTEREST (SEE DOCUMENT FOR DETAILS). Assignors: GEHRINGHOFF, LUDGER, JAKEL, CARSTEN, KLASFAUSEWEH, UDO
Publication of US20030066581A1 publication Critical patent/US20030066581A1/en
Assigned to BENTELER AUTOMOBILTECHNIK GMBH reassignment BENTELER AUTOMOBILTECHNIK GMBH CHANGE OF NAME (SEE DOCUMENT FOR DETAILS). Assignors: BENTELER AUTOMOBILTECHNIK GMBH & CO. KG
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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
    • 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
    • B21D19/00—Flanging or other edge treatment, e.g. of tubes
    • B21D19/08—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws
    • B21D19/088—Flanging or other edge treatment, e.g. of tubes by single or successive action of pressing tools, e.g. vice jaws for flanging holes
    • 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
    • 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
    • C21D1/62—Quenching devices
    • C21D1/673—Quenching devices for die quenching
    • 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

Definitions

  • the present invention relates to a method of making a hardened sheet metal article.
  • the present invention relates to a press mold for carrying out the method.
  • blade is used here in a generic sense and refers to a flat sheet steel plate as well as to a pre-formed semi-finished product.
  • heat-treating or “heat treatment” is also used here in a generic sense and includes, i.a., quenching and tempering.
  • press mold is also used here in a generic sense and includes a progressive die assembly which is capable to perform two or more operations, e.g. pressing, shaping, hardening etc.
  • German patent publication DE 24 52 486 A1 describes a method of making a hardened sheet metal article from a blank through a press hardening process by heating a blank of hardenable steel to a hardening temperature, placing the blank in a press mold for hot forming to the desired final shape, and hardening the final sheet metal product in the press mold. Since the final sheet metal product remains clamped in the press mold during the cooling process carried out during the hardening operation, the product is accuracy in size.
  • a method of making a hardened sheet metal article includes the steps of forming in a blank at least one through-passage with a projecting collar; hot-forming and hardening the blank in a press mold to a sheet metal article; and calibrating the through-passage to a final shape in the press mold.
  • the present invention resolves prior art problems by shaping the through-passage in the blank outside the heat-treatment process.
  • the blank may be a preform or a semi-finished product.
  • the blank is heated and hot-formed in the press mold to the sheet metal article.
  • a calibration of the through-passage to its final shape is realized.
  • the sheet metal article is hardened in the press mold.
  • the blank may be made with one or more through-passages which may have any desired shape. Examples include round or oval shaped depressions.
  • An essential feature of the present invention is the fact that the heat-treatment process is only accompanied by a calibration of the through-passage to final size. This ensures, that the through-passage can serve as reference point with required accuracy as reference point for subsequent manufacturing processes to which the sheet metal article may be subjected. As a consequence, the tool is exposed to less wear and the manufacturing costs are reduced.
  • the method according to the present invention is easy to implement, cost-effective and efficient. Through calibration in the press mold, the blank can be accurately aligned in the press mold. Thus, a sheet metal article can be pressed at high accuracy in size. This is advantageous, especially for subsequent manufacturing processes.
  • the through-passages may be used as reference points in subsequent operations so that the sheet metal article can be precisely positioned.
  • the through-passages may also be used for reinforcement of the sheet metal article or as assembly holes.
  • the blank is made of steel which may have the following composition, by weight percent: 0.19 to 0.25% carbon (C), 0.15 to 0.50% silicon (Si), 1.10 to 1.40% manganese (Mn), 0.020 to 0.050% titanium (Ti), 0.002 to 0.005% boron (B), 0.02 to 0.06% aluminum (Al), a maximum of 0.025% phosphorus (P), a maximum of 0.015% sulfur (S), a maximum of 0.35% chromium (Cr), and a maximum of 0.35% molybdenum (Mo), and the balance being iron (Fe) and other incidental impurities as a result of melting.
  • the sheet metal blank formed with one or more through-passages, is heated in a heat treatment apparatus to a hardening temperature, which is above Ac 3 where the steel is in austenitic state. Normally, the steel is heated to a temperature between 775° C. and 1000° C.
  • the subsequent forming process is executed in the press mold, with the cooling operation triggering a hardening of the product to obtain a fine-grain martensitic or bainitic structure.
  • the sheet metal article is restrained in the press mold.
  • the cooling operation may be carried out directly or indirectly. Direct cooling involves a direct contact of the sheet metal article with a coolant, whereas indirect cooling involves a cooling of the press mold or components thereof.
  • the through-passage may be formed with a circumferential collar or with a discontinuous collar.
  • FIG. 1 is a cutaway side view of a pre-holed sheet steel blank
  • FIG. 2 is a side view of the blank of FIG. 1 with formed through-passage
  • FIG. 3 is a schematic sectional view of a press mold with inserted blank of FIG. 2;
  • FIG. 4 is a side view of the blank after calibration of the through-passage to final shape.
  • FIG. 1 a cutaway side view of blank 1 which is pre-made with holes and made of sheet steel.
  • the blank 1 is provided with a recess 2 having edges 3 which are formed with collars 4 in a subsequent shaping process, thereby providing the blank 1 with a through-passage 5 .
  • the through-passage 5 shown here has a circumferential collar 4 .
  • it is also possible to perforate the blank 1 and to shape the through-passage 5 is a single manufacturing step.
  • the blank 1 provided with the through-passage 5 is heated to a hardening temperature, which is above Ac 3 .
  • the hardening temperature is between 775° C. and 1000° C. so that the steel is in an austenitic state.
  • the blank 1 is shaped to size in a press mold 6 to a desired final sheet metal article 7 . While still being clamped in the press mold 6 , the sheet metal article 7 is hardened.
  • FIG. 3 shows a schematic fragmentary view of a press mold 6 involved here.
  • the press mold 6 has an upper die 8 and a lower die 9 .
  • Accommodated in the lower die 6 is a receptacle 10 for positioning the through-passage 5 .
  • the upper die 8 has a male mold or plunger 11 , which has a contour suited to the lower die 9 and cavity 10 .
  • the blank 1 is shaped to the sheet metal article 7 and at the same time, the through-passage 5 is calibrated to a precise final size. While still being clamped in the press mold 6 , the sheet metal article 7 is hardened through rapid cooling.
  • FIG. 4 shows the sheet metal article 7 after calibration of the through-passage 5 .
  • the through-passage 5 has a diameter d which has been enlarged by 3 mm, whereas the collar 4 has an inner radius r which has been reduced by 2 mm.
  • the thus-produced through-passage 5 may be used as reference point for accurately positioning the sheet metal article 7 in subsequent manufacturing processes. Through-passages 5 may also be provided as reinforcement of the sheet metal article 7 at suitable locations. Furthermore, the through-passages 5 may also serve as mounting holes.

Abstract

In a method of making a hardened sheet metal article, a blank is formed with at least one through-passage with a projecting collar. Thereafter, the blank is heated and hot-formed in a press mold to a sheet metal article. Still within the press mold, the sheet metal article is hardened. The shaping of the blank in the press mold is accompanied by a calibration of the through-passage to final shape.

Description

    CROSS-REFERENCES TO RELATED APPLICATIONS
  • This application claims the priority of German Patent Application, Serial No. 101 49 220.0, filed Oct. 5, 2001, pursuant to 35 U.S.C. 119(a)-(d), the disclosure of which is incorporated herein by reference. [0001]
    • BACKGROUND OF THE INVENTION
  • The present invention relates to a method of making a hardened sheet metal article. In addition, the present invention relates to a press mold for carrying out the method. [0002]
  • To ensure clarity, it is necessary to establish the definition of several important terms and expressions that will be used throughout this disclosure. The term “blank” is used here in a generic sense and refers to a flat sheet steel plate as well as to a pre-formed semi-finished product. The term “heat-treating” or “heat treatment” is also used here in a generic sense and includes, i.a., quenching and tempering. The term “press mold” is also used here in a generic sense and includes a progressive die assembly which is capable to perform two or more operations, e.g. pressing, shaping, hardening etc. [0003]
  • German patent publication DE 24 52 486 A1 describes a method of making a hardened sheet metal article from a blank through a press hardening process by heating a blank of hardenable steel to a hardening temperature, placing the blank in a press mold for hot forming to the desired final shape, and hardening the final sheet metal product in the press mold. Since the final sheet metal product remains clamped in the press mold during the cooling process carried out during the hardening operation, the product is accuracy in size. [0004]
  • Through combination of the shaping and hardening and quenching steps in a single tool, hot forming and hardening in the press mold is an cost-effective process. [0005]
  • International patent publication WO 99/07492 discloses a modification of the afore-described press hardening process by collaring marginal areas of a plurality of holes in the press mold. The holes are collared in the press mold before the hardening process. The openings in the sheet metal product serve as through-bores for screw fasteners. These openings, also called in the art as “through-passages”, are utilized as reference holes or seats for accurate alignment of the sheet metal product in subsequent processes. In addition, these openings are also provided as assembly clearance or for reinforcement measure. [0006]
  • The components of this conventional press mold are subjected to great wear, when the through-passages are shaped. In addition, the collaring operation results only in a limited shaping of the collar. A further drawback is the increased costs compared to the conventional cold forming process. [0007]
  • It would therefore be desirable and advantageous to provide an improved method of making hardened sheet metal articles, which obviates prior art shortcomings and which can be carried out in a more economical and efficient manner. [0008]
    • SUMMARY OF THE INVENTION
  • According to one aspect of the present invention, a method of making a hardened sheet metal article, includes the steps of forming in a blank at least one through-passage with a projecting collar; hot-forming and hardening the blank in a press mold to a sheet metal article; and calibrating the through-passage to a final shape in the press mold. [0009]
  • The present invention resolves prior art problems by shaping the through-passage in the blank outside the heat-treatment process. As afore-stated, the blank may be a preform or a semi-finished product. Once the through-passage with its projecting collar has been made, the blank is heated and hot-formed in the press mold to the sheet metal article. At the same time, a calibration of the through-passage to its final shape is realized. Subsequently, the sheet metal article is hardened in the press mold. [0010]
  • The blank may be made with one or more through-passages which may have any desired shape. Examples include round or oval shaped depressions. [0011]
  • An essential feature of the present invention is the fact that the heat-treatment process is only accompanied by a calibration of the through-passage to final size. This ensures, that the through-passage can serve as reference point with required accuracy as reference point for subsequent manufacturing processes to which the sheet metal article may be subjected. As a consequence, the tool is exposed to less wear and the manufacturing costs are reduced. The method according to the present invention is easy to implement, cost-effective and efficient. Through calibration in the press mold, the blank can be accurately aligned in the press mold. Thus, a sheet metal article can be pressed at high accuracy in size. This is advantageous, especially for subsequent manufacturing processes. [0012]
  • The through-passages may be used as reference points in subsequent operations so that the sheet metal article can be precisely positioned. Of course, the through-passages may also be used for reinforcement of the sheet metal article or as assembly holes. [0013]
  • According to another feature of the present invention, the blank is made of steel which may have the following composition, by weight percent: 0.19 to 0.25% carbon (C), 0.15 to 0.50% silicon (Si), 1.10 to 1.40% manganese (Mn), 0.020 to 0.050% titanium (Ti), 0.002 to 0.005% boron (B), 0.02 to 0.06% aluminum (Al), a maximum of 0.025% phosphorus (P), a maximum of 0.015% sulfur (S), a maximum of 0.35% chromium (Cr), and a maximum of 0.35% molybdenum (Mo), and the balance being iron (Fe) and other incidental impurities as a result of melting. [0014]
  • The sheet metal blank, formed with one or more through-passages, is heated in a heat treatment apparatus to a hardening temperature, which is above Ac[0015] 3 where the steel is in austenitic state. Normally, the steel is heated to a temperature between 775° C. and 1000° C. The subsequent forming process is executed in the press mold, with the cooling operation triggering a hardening of the product to obtain a fine-grain martensitic or bainitic structure. During the hardening process, the sheet metal article is restrained in the press mold. The cooling operation may be carried out directly or indirectly. Direct cooling involves a direct contact of the sheet metal article with a coolant, whereas indirect cooling involves a cooling of the press mold or components thereof.
  • According to another feature of the present invention, the through-passage may be formed with a circumferential collar or with a discontinuous collar. [0016]
    • BRIEF DESCRIPTION OF THE DRAWING
  • Other features and advantages of the present invention will be more readily apparent upon reading the following description of currently preferred exemplified embodiments of the invention with reference to the accompanying drawing, in which: [0017]
  • FIG. 1 is a cutaway side view of a pre-holed sheet steel blank; [0018]
  • FIG. 2 is a side view of the blank of FIG. 1 with formed through-passage; [0019]
  • FIG. 3 is a schematic sectional view of a press mold with inserted blank of FIG. 2; and [0020]
  • FIG. 4 is a side view of the blank after calibration of the through-passage to final shape. [0021]
    • DETAILED DESCRIPTION OF PREFERRED EMBODIMENTS
  • Throughout all the Figures, same or corresponding elements are generally indicated by same reference numerals. [0022]
  • Turning now to the drawing, and in particular to FIG. 1, there is shown a cutaway side view of blank [0023] 1 which is pre-made with holes and made of sheet steel. The blank 1 is provided with a recess 2 having edges 3 which are formed with collars 4 in a subsequent shaping process, thereby providing the blank 1 with a through-passage 5. The through-passage 5 shown here has a circumferential collar 4. Depending on requirements at hand, it is, of course, also possible to produce a discontinuous collar 4. Basically, it is also possible to perforate the blank 1 and to shape the through-passage 5 is a single manufacturing step.
  • The blank [0024] 1 provided with the through-passage 5 is heated to a hardening temperature, which is above Ac3. Depending on the steel used, the hardening temperature is between 775° C. and 1000° C. so that the steel is in an austenitic state. Subsequently, the blank 1 is shaped to size in a press mold 6 to a desired final sheet metal article 7. While still being clamped in the press mold 6, the sheet metal article 7 is hardened.
  • Shaping in the press mold [0025] 6 is accompanied by a calibration of the through-passage 5 to final shape. FIG. 3 shows a schematic fragmentary view of a press mold 6 involved here. The press mold 6 has an upper die 8 and a lower die 9. Accommodated in the lower die 6 is a receptacle 10 for positioning the through-passage 5. The upper die 8 has a male mold or plunger 11, which has a contour suited to the lower die 9 and cavity 10. During press stroke, the blank 1 is shaped to the sheet metal article 7 and at the same time, the through-passage 5 is calibrated to a precise final size. While still being clamped in the press mold 6, the sheet metal article 7 is hardened through rapid cooling.
  • FIG. 4 shows the [0026] sheet metal article 7 after calibration of the through-passage 5. In the nonlimiting example shown here, the through-passage 5 has a diameter d which has been enlarged by 3 mm, whereas the collar 4 has an inner radius r which has been reduced by 2 mm.
  • The thus-produced through-[0027] passage 5 may be used as reference point for accurately positioning the sheet metal article 7 in subsequent manufacturing processes. Through-passages 5 may also be provided as reinforcement of the sheet metal article 7 at suitable locations. Furthermore, the through-passages 5 may also serve as mounting holes.
  • While the invention has been illustrated and described in connection with currently preferred embodiments shown and described in detail, it is not intended to be limited to the details shown since various modifications and structural changes may be made without departing in any way from the spirit of the present invention. The embodiments were chosen and described in order to best explain the principles of the invention and practical application to thereby enable a person skilled in the art to best utilize the invention and various embodiments with various modifications as are suited to the particular use contemplated. [0028]
  • What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims and their equivalents: [0029]

Claims (7)

What is claimed is:
1. A method of making a hardened sheet metal article; comprising the steps of:
forming in a blank at least one through-passage with a projecting collar;
hot-forming and hardening the blank in a press mold to a sheet metal article; and
calibrating the through-passage to a final shape in the press mold.
2. The method of claim 1, and further comprising the step of pre-forming the blank before the forming step.
3. The method of claim 2, wherein the blank is pre-made with at least one hole.
4. The method of claim 1, wherein the through-passage is formed with a circumferential collar.
5. The method of claim 1, wherein the through-passage is formed with a discontinuous collar.
6. The method of claim 1, wherein the blank is made of steel having a following composition, by weight percent: 0.19 to 0.25% carbon (C), 0.15 to 0.50% silicon (Si), 1.10 to 1.40% manganese (Mn), 0.020 to 0.050% titanium (Ti), 0.002 to 0.005% boron (B), 0.02 to 0.06% aluminum (Al), a maximum of 0.025% phosphorus (P), a maximum of 0.015% sulfur (S), a maximum of 0.35% chromium (Cr), and a maximum of 0.35% molybdenum (Mo), and the balance being iron (Fe) and other incidental impurities.
7. A method of making a hardened sheet metal article; comprising the steps of:
forming in a blank at least one through-passage with a projecting collar;
heating the blank;
hot-forming the blank in a press mold to a sheet metal article;
hardening the sheet metal article in the press mold; and
calibrating the through-passage to a final shape in the press mold.
US10/262,586 2001-10-05 2002-09-30 Method of making a hardened sheet metal article Abandoned US20030066581A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10149220.0 2001-10-05
DE10149220A DE10149220C1 (en) 2001-10-05 2001-10-05 Process for producing a hardened sheet metal profile

Publications (1)

Publication Number Publication Date
US20030066581A1 true US20030066581A1 (en) 2003-04-10

Family

ID=7701545

Family Applications (1)

Application Number Title Priority Date Filing Date
US10/262,586 Abandoned US20030066581A1 (en) 2001-10-05 2002-09-30 Method of making a hardened sheet metal article

Country Status (3)

Country Link
US (1) US20030066581A1 (en)
EP (1) EP1300476B1 (en)
DE (1) DE10149220C1 (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040231762A1 (en) * 2003-05-21 2004-11-25 Detleff Steinhofer Method of fabricating pressed components
WO2005121582A1 (en) * 2004-06-10 2005-12-22 Scania Cv Ab (Publ) Spline joint part
US20090101249A1 (en) * 2007-10-23 2009-04-23 Benteler Automobiltechnik Gmbh Method of making a hardened sheet metal part
US20130025340A1 (en) * 2010-04-23 2013-01-31 Topre Corporation Method of hot-press forming enabling hardness control
US20130283616A1 (en) * 2011-10-27 2013-10-31 Benteler Automobiltechnik Gmbh Method for the production of a hot formed and press hardened motor vehicle body structure, and motor vehicle body structure
CN106488813A (en) * 2014-07-11 2017-03-08 蒂森克虏伯钢铁欧洲股份公司 Method for manufacturing the component of pressure quench
US20170102067A1 (en) * 2015-10-13 2017-04-13 Magna Powertrain Inc. Methods of forming components utilizing ultra-high strength steel and components formed thereby
US9803641B2 (en) 2013-06-12 2017-10-31 Kabushiki Kaisha Toyota Jidoshokki Method for manufacturing anti-rotation ring of scroll type compressor and anti-rotation mechanism of the scroll type compressor
JP2018061977A (en) * 2016-10-13 2018-04-19 株式会社アーク Burring tool and burring device

Families Citing this family (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7998289B2 (en) 2002-09-13 2011-08-16 Daimler Ag Press-hardened part and method for the production thereof
DE10254695B3 (en) * 2002-09-13 2004-04-15 Daimlerchrysler Ag Production of a metallic component, especially a vehicle body component, from a semifinished product made of non-hardened heat-deformable sheet steel comprises cold-forming, trimming, hot-forming and press-hardening processes
DE10246164B4 (en) * 2002-10-02 2014-03-20 Benteler Automobiltechnik Gmbh Method for producing structural components
DE10341867B4 (en) * 2003-09-09 2012-03-08 Volkswagen Ag Method and device for producing a hardened sheet metal profile
DE102004019693B4 (en) * 2004-04-20 2017-10-26 Volkswagen Ag Method for producing a hardened sheet metal profile
DE102005045466B4 (en) * 2005-09-22 2015-10-29 Volkswagen Ag Process for the treatment of steel strip
DE102014011973A1 (en) * 2014-08-15 2016-02-18 Kiekert Aktiengesellschaft Method for producing a motor vehicle door lock
CN105598280A (en) * 2015-12-25 2016-05-25 佛山市成阳正大模具五金塑料有限公司 High-precision flanging die for thick plate and flanging process

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6293134B1 (en) * 1997-08-07 2001-09-25 Ssab Hardtech Ab Method of producing a sheet steel product such as a motor vehicle bumper beam in a progressive die system

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
SE435527B (en) * 1973-11-06 1984-10-01 Plannja Ab PROCEDURE FOR PREPARING A PART OF Hardened Steel

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6293134B1 (en) * 1997-08-07 2001-09-25 Ssab Hardtech Ab Method of producing a sheet steel product such as a motor vehicle bumper beam in a progressive die system

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US7544258B2 (en) 2003-05-21 2009-06-09 Thyssenkrupp Automotive Ag Method of fabricating pressed components
US20040231762A1 (en) * 2003-05-21 2004-11-25 Detleff Steinhofer Method of fabricating pressed components
WO2005121582A1 (en) * 2004-06-10 2005-12-22 Scania Cv Ab (Publ) Spline joint part
US8756969B2 (en) 2007-10-23 2014-06-24 Benteler Automobiltechnik Gmbh Method of making a hardened sheet metal part
US20090101249A1 (en) * 2007-10-23 2009-04-23 Benteler Automobiltechnik Gmbh Method of making a hardened sheet metal part
US20130025340A1 (en) * 2010-04-23 2013-01-31 Topre Corporation Method of hot-press forming enabling hardness control
US9409221B2 (en) * 2010-04-23 2016-08-09 Topre Corporation Method of hot-press forming enabling hardness control
US20130283616A1 (en) * 2011-10-27 2013-10-31 Benteler Automobiltechnik Gmbh Method for the production of a hot formed and press hardened motor vehicle body structure, and motor vehicle body structure
US9308953B2 (en) * 2011-10-27 2016-04-12 Benteler Automobiltechnik Gmbh Method for the production of a hot formed and press hardened motor vehicle body structure, and motor vehicle body structure
US9803641B2 (en) 2013-06-12 2017-10-31 Kabushiki Kaisha Toyota Jidoshokki Method for manufacturing anti-rotation ring of scroll type compressor and anti-rotation mechanism of the scroll type compressor
CN106488813A (en) * 2014-07-11 2017-03-08 蒂森克虏伯钢铁欧洲股份公司 Method for manufacturing the component of pressure quench
US10364476B2 (en) 2014-07-11 2019-07-30 Thyssenkrupp Ag Method and device for producing a press-quenched part
US20170102067A1 (en) * 2015-10-13 2017-04-13 Magna Powertrain Inc. Methods of forming components utilizing ultra-high strength steel and components formed thereby
US10767756B2 (en) * 2015-10-13 2020-09-08 Magna Powertrain Inc. Methods of forming components utilizing ultra-high strength steel and components formed thereby
JP2018061977A (en) * 2016-10-13 2018-04-19 株式会社アーク Burring tool and burring device

Also Published As

Publication number Publication date
EP1300476A2 (en) 2003-04-09
EP1300476B1 (en) 2005-11-02
DE10149220C1 (en) 2002-08-08
EP1300476A3 (en) 2004-09-08

Similar Documents

Publication Publication Date Title
US6878220B2 (en) Method of making a hardened sheet metal article
US20030066581A1 (en) Method of making a hardened sheet metal article
KR100707239B1 (en) Method for hot forming and hot formed member
KR100961022B1 (en) Method for producing hot-formed steel product
US5516376A (en) Method of, and apparatus for manufacturing a gear with a central through hole
CN104936716B (en) The manufacture method of hot forming steel beam column
CN101120105B (en) Method for producing quenched components consisting of sheet steel
EP2289694B1 (en) Press-cure mold cooling device
JP3249345B2 (en) Bevel gear manufacturing method
KR20180054460A (en) Hot-press molding method and hot-press molded product
CA2146042C (en) Method and apparatus for manufacturing toothed gears
CN100378240C (en) Method for production and forming of cast pieces of spheroidal graphite with improved mechanical properties
CZ298312B6 (en) Process for producing hardened sheet metal section
CN108774712A (en) Superelevation thermal conductivity hot stamping die steel and its manufacturing method
PL181967B1 (en) Method of making forged connecting-rods
CN109182699A (en) A kind of processing technology of die steel
KR101042493B1 (en) Wheel disk of Road Wheel in Vehicle and manufacturing method thereof
CN107475623A (en) A kind of hot forming high-strength steel and its processing method
JP2008307563A (en) Method of manufacturing flange structure
CN112962021B (en) Strong plastic steel plate for integral hot stamping forming after laser tailor-welding and production method thereof
US20180216204A1 (en) Method for producing a press-quenched component, and press mold
JP2008296694A (en) Flange structure
CN106048455B (en) A kind of processing method of mold materials for high intensity forging
JPH11254077A (en) Manufacture of die of high strength and high toughness
CN114653825A (en) Sheet metal part indirect thermal forming machining process

Legal Events

Date Code Title Description
AS Assignment

Owner name: BENTELER AUTOMOBILTECHNIK GMBH & CO. KG, GERMANY

Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNORS:GEHRINGHOFF, LUDGER;KLASFAUSEWEH, UDO;JAKEL, CARSTEN;REEL/FRAME:013507/0440

Effective date: 20021011

AS Assignment

Owner name: BENTELER AUTOMOBILTECHNIK GMBH, GERMANY

Free format text: CHANGE OF NAME;ASSIGNOR:BENTELER AUTOMOBILTECHNIK GMBH & CO. KG;REEL/FRAME:014848/0713

Effective date: 20021106

STCB Information on status: application discontinuation

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