US20030066581A1 - Method of making a hardened sheet metal article - Google Patents
Method of making a hardened sheet metal article Download PDFInfo
- 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
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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.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Abstract
Description
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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.
- 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. Of course, the through-passages may also be used for reinforcement of the sheet metal article or as assembly holes.
- 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.
- 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 Ac3 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.
- 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:
- 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; and
- FIG. 4 is a side view of the blank after calibration of the through-passage to final shape.
- Throughout all the Figures, same or corresponding elements are generally indicated by same reference numerals.
- Turning now to the drawing, and in particular to FIG. 1, there is shown a cutaway side view of blank1 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 blank1 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 finalsheet metal article 7. While still being clamped in the press mold 6, thesheet metal article 7 is hardened. - Shaping in the press mold6 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 anupper die 8 and a lower die 9. Accommodated in the lower die 6 is areceptacle 10 for positioning the through-passage 5. Theupper die 8 has a male mold orplunger 11, which has a contour suited to the lower die 9 andcavity 10. During press stroke, the blank 1 is shaped to thesheet 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, thesheet metal article 7 is hardened through rapid cooling. - FIG. 4 shows the
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-
passage 5 may be used as reference point for accurately positioning thesheet metal article 7 in subsequent manufacturing processes. Through-passages 5 may also be provided as reinforcement of thesheet 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.
- What is claimed as new and desired to be protected by Letters Patent is set forth in the appended claims and their equivalents:
Claims (7)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10149220A DE10149220C1 (en) | 2001-10-05 | 2001-10-05 | Process for producing a hardened sheet metal profile |
DE10149220.0 | 2001-10-05 |
Publications (1)
Publication Number | Publication Date |
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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)
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)
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)
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)
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 |
-
2001
- 2001-10-05 DE DE10149220A patent/DE10149220C1/en not_active Expired - Fee Related
-
2002
- 2002-08-31 EP EP02019505A patent/EP1300476B1/en not_active Expired - Fee Related
- 2002-09-30 US US10/262,586 patent/US20030066581A1/en not_active Abandoned
Patent Citations (1)
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)
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 |
EP1300476A3 (en) | 2004-09-08 |
DE10149220C1 (en) | 2002-08-08 |
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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 |
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