US20090056403A1 - Method of hot stamping metal parts - Google Patents
Method of hot stamping metal parts Download PDFInfo
- Publication number
- US20090056403A1 US20090056403A1 US11/848,754 US84875407A US2009056403A1 US 20090056403 A1 US20090056403 A1 US 20090056403A1 US 84875407 A US84875407 A US 84875407A US 2009056403 A1 US2009056403 A1 US 2009056403A1
- Authority
- US
- United States
- Prior art keywords
- component parts
- composite
- parts
- stamping
- composite part
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K31/00—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups
- B23K31/02—Processes relevant to this subclass, specially adapted for particular articles or purposes, but not covered by only one of the preceding main groups relating to soldering or welding
-
- 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
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
- B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
- B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
- B23K2101/00—Articles made by soldering, welding or cutting
- B23K2101/18—Sheet panels
- B23K2101/185—Tailored blanks
Definitions
- the formed piece After being pressed in the die, the formed piece may be quenched by rapidly cooling the part, often using water. Quenching of the metal generally improves certain properties in the metal such as hardness and strength that would not otherwise be present if cooled gradually.
- FIG. 2 is a plan view of a composite blank before being hot stamped.
Abstract
A method of producing a stamped composite part, the method comprising spot welding two or more metal component parts to each other to hold the component parts in a selected position as a composite part, heating the composite part, and stamping the composite part into a desired shape. The invention also contemplates the further step of welding the two or more metal component parts to each other in the composite part.
Description
- This invention relates to the process and systems of hot stamping metal parts. In particular, this invention relates to a process of hot stamping and joining metal parts.
- Metal parts are often formed from sheet metal. Sheet metal is cut, bent and pressed in to the shape of the desired metal parts. After the metal part is formed, it can then be welded or otherwise attached to other metal parts created by the same process or by other means.
- Hot stamping is a process of forming metal parts from sheet metal stock that involves heating a portion of the sheet metal material to a high temperature for a period of time and then forming the heated material using a die.
- Ovens are often used to heat the pieces to the high temperatures needed. In a manufacturing facility, pieces may be continuously moved through the oven so the parts are consistently heated to the desired temperature for the desired length of time. Ovens are generally an expensive element of the manufacturing facility, in terms of both capital and operating costs, and the throughput of the oven a limiting factor in the hot stamping process.
- The part may then be stamped to form the metal part into the desired shape. Stamping is the forming of metal by using a die and a punch that resembles the shape of the part. By heating the piece, the metal becomes more ductile and easier to form by pressing within the die.
- After being pressed in the die, the formed piece may be quenched by rapidly cooling the part, often using water. Quenching of the metal generally improves certain properties in the metal such as hardness and strength that would not otherwise be present if cooled gradually.
- After the part is cooled, it may be welded or otherwise attached to other parts to create a composite metal component. As often multiple different parts must be welded together, multiple dies must be used to form each of the parts before they can be welded together, and each of the parts must be separately heated in the oven before stamping.
- Hot stamping facilities may hot stamp a first part for a period of time by cutting, heating and stamping the first part. After a suitable quantity of the first part has been created, a second part may be hot stamped by cutting, heating and stamping the second part. Only after the second part is formed, may the first and second parts be welded together. This process requires that a suitable quantity of the first part be stored pending the hot stamping of the second part. Alternatively, a manufacturer must run multiple ovens at the same time in order to heat the first and second parts in parallel, with attendant additional cost and space usage.
- Moreover, it is conventionally considered that the integrity of a weld between parts that are welded together before the parts are heated to a sufficiently hot temperature for hot stamping is suspect, in contrast to welds effected after the hot stamping process.
- In drawings which illustrate by way of example only a preferred embodiment of the invention,
-
FIG. 1 is a flow chart showing the hot stamping process according to an implementation of the invention. -
FIG. 2 is a plan view of a composite blank before being hot stamped. -
FIG. 3 a perspective view of a component part after being hot stamped. - The present invention relates to a method of producing a stamped composite part, the method comprising the steps of cutting at least two metal component parts into a desired shape; welding the at least two metal component parts to each other to hold the at least two metal component parts together in a selected position as a composite blank; heating the composite blank for stamping; and stamping the composite blank to form the composite blank into a desired shape, thereby creating a stamped composite part.
- The method may further comprise the step of further welding the at least two metal component parts to each other in the composite part.
- With reference to
FIG. 1 , the process is described in relation to creating a stamped component made from two metal component parts. The process of the invention can be used to create a stamped composite part made from more than two metal component parts. As used herein, a metal component part is a single part of metal formed from a single part of sheet metal stock, for example cut as a “blank,” that may then be formed and/or welded to another part. Other forms of source material may be used in place of sheet metal stock, such as bar, tube or wire. A composite part consists of two or more metal component parts that have been formed and welded together. - In the two-component embodiment of the invention described and illustrated by way of example only, as shown at 1 and 2 each of the two metal component parts is cut from sheet metal stock. The sheet metal stock may be cut to form the metal parts using any suitable technique, for example without limitation, punching, laser cutting, trimming, or shearing, to create blanks.
- At
block 5, the two component parts are arranged together in a selected position and held in the selected position with one or more welds, for example spot welds as indicated. The spot welds retain the two parts in the selected position during theheating step 10 and the stampingstep 20. The retaining spot welds may be effected manually or by a machine designed to position and spot weld the parts. In one preferred embodiment thecomponent parts composite part 115. - As shown in
FIG. 2 , an example of afirst component part 100 and asecond component part 105 are held in alignment using five aligning spot welds indicated as 110. This creates acomposite part 115, at this stage still an unformed blank. - At
block 10, the two component parts are heated, by a heating apparatus, for example a furnace or oven. As mentioned, the two component parts are held together by the retaining spot welds completed atblock 5, creating a composite blank 112. The twoparts stamping step 20, for example by rendering the composite blank 112 ductile. After heating the composite blank 112, the composite blank 112 is removed from the heating apparatus as indicated atblock 15. The heating apparatus may be a walk through oven such as used in conventional hot stamping processes. Alternatively, the heating apparatus may be an oven with one or more compartments suitable for placing a part. The composite blank may be heated to 920 degrees Centigrade for between 4 to 10 minutes. Heating the composite blank 112 for an undue lengthy period of time may cause damage to any coating on the surface of the twoparts - At
block 20, the heated composite blank 112 is placed in a die and pressed using a hot stamping press. The die forms both of thecomponent parts heating process 10, the retaining spot welds fromstep 5 being sufficient to maintain the twocomponent parts stamping stage 20. - At
block 25, the heated and formedcomposite part 115 is quenched by rapid cooling, as is conventional. Quenching may be done using water or gas or any other suitable technique. In one embodiment, the die and punch are cooled by water flowing through ducts integrated with the die and punch so that quenching occurs substantially simultaneously with the stamping process. After being hot stamped, thecomposite part 115 may be need to be cleaned to remove scale from the heating and forming steps. - After the
composite part 115 has been hot stamped, thecomponent parts composite part 115, as indicated atblock 30, more fully integrating the twocomponent parts composite part 115 prepared according to the invention is shown inFIG. 3 . - By positioning the two
component parts - The integrity of the retaining spot welds is maintained through the heating and stamping parts of the process.
- The process of hot stamping as described above may involve other steps such as quality assurance and dimensional checking as part of the manufacturing process.
- In a
composite part 115 produced according to the method of the invention the integrity of the retaining welds between thecomponent parts
Claims (4)
1. A method of producing a stamped composite part, the method comprising the steps of:
a) cutting at least two metal component parts into a desired shape;
b) welding the at least two metal component parts to each other to hold the at least two metal component parts together in a selected position as a composite blank;
c) heating the composite blank for stamping; and
d) stamping the composite blank to form the composite blank into a desired shape, thereby creating a stamped composite part.
2. The method of claim 1 further comprising after step d), the step of:
e) further welding the at least two metal component parts to each other in the composite part.
3. The method of claim 2 , wherein step b) comprises the step of spot welding the at least two metal component parts to each other using at least four spot welds.
4. The method of claim 2 , wherein step c) comprises the sub-steps of:
i) placing the composite part in an oven;
ii) heating the composite part in the oven; and
iii) removing the composite part from the oven.
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/848,754 US20090056403A1 (en) | 2007-08-31 | 2007-08-31 | Method of hot stamping metal parts |
Applications Claiming Priority (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
US11/848,754 US20090056403A1 (en) | 2007-08-31 | 2007-08-31 | Method of hot stamping metal parts |
Publications (1)
Publication Number | Publication Date |
---|---|
US20090056403A1 true US20090056403A1 (en) | 2009-03-05 |
Family
ID=40405364
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
US11/848,754 Abandoned US20090056403A1 (en) | 2007-08-31 | 2007-08-31 | Method of hot stamping metal parts |
Country Status (1)
Country | Link |
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US (1) | US20090056403A1 (en) |
Cited By (13)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101862947A (en) * | 2010-05-11 | 2010-10-20 | 上海赛科利汽车模具技术应用有限公司 | Double-sheet spot welding hot stamping method and welding structure thereof |
CN104625633A (en) * | 2014-12-26 | 2015-05-20 | 西安交通大学 | Semisolid manufacturing technology for mold ring spinning strain inducing method for submarine ring rib cylindrical shell |
WO2016164753A1 (en) * | 2015-04-10 | 2016-10-13 | Rb&W Manufacturing Llc | Method for installing a self-clinching fastener |
US20170101705A1 (en) * | 2015-10-08 | 2017-04-13 | Novelis Inc. | Optimization of aluminum hot working |
US9908442B2 (en) | 2015-12-14 | 2018-03-06 | Ford Global Technologies, Llc | Net build process for seating subassembly |
WO2019171150A1 (en) * | 2018-03-08 | 2019-09-12 | Arcelormittal | Method for producing a welded metal blank and thus obtained welded metal blank |
CN110814653A (en) * | 2019-11-15 | 2020-02-21 | 哈尔滨电气动力装备有限公司 | Processing technology of snap ring for asynchronous motor |
US10697484B2 (en) | 2018-02-07 | 2020-06-30 | Rb&W Manufacturing Llc | Method for installing a self-piercing and self-clinching fastener |
WO2021041281A1 (en) * | 2019-08-23 | 2021-03-04 | John Tyson Ii | Methods, system and devices for panel marking and formability measurements, including autonomous methods and devices |
CN112975306A (en) * | 2021-05-10 | 2021-06-18 | 四川轻舟汽车轻量化技术有限公司 | Production method for hot stamping forming of automobile parts |
US11209040B2 (en) | 2019-07-15 | 2021-12-28 | Rb&W Manufacturing Llc | Self-clinching fastener |
RU2783829C1 (en) * | 2018-12-24 | 2022-11-18 | Арселормиттал | Method for production of welded steel billet and corresponding welded steel billet |
US11913488B2 (en) | 2021-05-27 | 2024-02-27 | Rb&W Manufacturing Llc | Self-clinching and self-piercing construction element with multi-purpose pilot |
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US5271142A (en) * | 1991-05-09 | 1993-12-21 | Soundwich, Inc. | Method for producing a sound-dampened automotive enclosure |
US5448831A (en) * | 1993-11-08 | 1995-09-12 | Ap Parts Manufacturing Company | Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell |
US5672216A (en) * | 1994-10-07 | 1997-09-30 | Robic; John I. | Distortion free heat treated metal stampings |
US6547895B2 (en) * | 2001-01-25 | 2003-04-15 | General Motors Corporation | Superplastic multi-layer forming |
US7028519B2 (en) * | 2004-01-12 | 2006-04-18 | General Motors Corporation | High throughput quick-plastic-forming |
US7143514B2 (en) * | 2000-07-10 | 2006-12-05 | Honda Giken Kogyo Kabushiki Kaisha | Method for manufacturing a vehicular body panel |
-
2007
- 2007-08-31 US US11/848,754 patent/US20090056403A1/en not_active Abandoned
Patent Citations (6)
Publication number | Priority date | Publication date | Assignee | Title |
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US5271142A (en) * | 1991-05-09 | 1993-12-21 | Soundwich, Inc. | Method for producing a sound-dampened automotive enclosure |
US5448831A (en) * | 1993-11-08 | 1995-09-12 | Ap Parts Manufacturing Company | Method of manufacturing a stamp formed muffler with hermetically sealed laminated outer shell |
US5672216A (en) * | 1994-10-07 | 1997-09-30 | Robic; John I. | Distortion free heat treated metal stampings |
US7143514B2 (en) * | 2000-07-10 | 2006-12-05 | Honda Giken Kogyo Kabushiki Kaisha | Method for manufacturing a vehicular body panel |
US6547895B2 (en) * | 2001-01-25 | 2003-04-15 | General Motors Corporation | Superplastic multi-layer forming |
US7028519B2 (en) * | 2004-01-12 | 2006-04-18 | General Motors Corporation | High throughput quick-plastic-forming |
Cited By (25)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101862947A (en) * | 2010-05-11 | 2010-10-20 | 上海赛科利汽车模具技术应用有限公司 | Double-sheet spot welding hot stamping method and welding structure thereof |
CN104625633A (en) * | 2014-12-26 | 2015-05-20 | 西安交通大学 | Semisolid manufacturing technology for mold ring spinning strain inducing method for submarine ring rib cylindrical shell |
CN107110191A (en) * | 2015-04-10 | 2017-08-29 | Rbw制造有限责任公司 | Method for installing the firm fastener of self-locking |
WO2016164753A1 (en) * | 2015-04-10 | 2016-10-13 | Rb&W Manufacturing Llc | Method for installing a self-clinching fastener |
US20190169726A1 (en) * | 2015-10-08 | 2019-06-06 | Novelis Inc. | Optimization of aluminum hot working |
CN108138274A (en) * | 2015-10-08 | 2018-06-08 | 诺维尔里斯公司 | The hot worked optimization of aluminium |
US10472708B2 (en) * | 2015-10-08 | 2019-11-12 | Novelis Inc. | Optimization of aluminum hot working |
US20170101705A1 (en) * | 2015-10-08 | 2017-04-13 | Novelis Inc. | Optimization of aluminum hot working |
US9908442B2 (en) | 2015-12-14 | 2018-03-06 | Ford Global Technologies, Llc | Net build process for seating subassembly |
US10179522B2 (en) | 2015-12-14 | 2019-01-15 | Ford Global Technologies, Llc | Net build process for seating subassembly |
US10697484B2 (en) | 2018-02-07 | 2020-06-30 | Rb&W Manufacturing Llc | Method for installing a self-piercing and self-clinching fastener |
RU2754268C1 (en) * | 2018-03-08 | 2021-08-31 | Арселормиттал | Method for producing a welded metal billet and welded metal billet produced thereby |
WO2019171150A1 (en) * | 2018-03-08 | 2019-09-12 | Arcelormittal | Method for producing a welded metal blank and thus obtained welded metal blank |
WO2019171323A1 (en) * | 2018-03-08 | 2019-09-12 | Arcelormittal | Method for producing a welded metal blank and thus obtained welded metal blank |
CN111819020A (en) * | 2018-03-08 | 2020-10-23 | 安赛乐米塔尔公司 | Method for producing a welded metal blank and welded metal blank obtained thereby |
EP3762173B1 (en) | 2018-03-08 | 2022-03-02 | ArcelorMittal | Method of and installation for producing a welded metal blank and thus obtained welded metal blank and press-formed welded metal part |
RU2783829C1 (en) * | 2018-12-24 | 2022-11-18 | Арселормиттал | Method for production of welded steel billet and corresponding welded steel billet |
US11209040B2 (en) | 2019-07-15 | 2021-12-28 | Rb&W Manufacturing Llc | Self-clinching fastener |
US11773894B2 (en) | 2019-07-15 | 2023-10-03 | Rb&W Manufacturing Llc | Self-clinching fastener |
WO2021041281A1 (en) * | 2019-08-23 | 2021-03-04 | John Tyson Ii | Methods, system and devices for panel marking and formability measurements, including autonomous methods and devices |
US20220274206A1 (en) * | 2019-08-23 | 2022-09-01 | II John Tyson | Methods, system and devices for panel marking and formability measurements, including autonomous methods and devices |
US11517983B2 (en) * | 2019-08-23 | 2022-12-06 | II John Tyson | Methods, system and devices for panel marking and formability measurements, including autonomous methods and devices |
CN110814653A (en) * | 2019-11-15 | 2020-02-21 | 哈尔滨电气动力装备有限公司 | Processing technology of snap ring for asynchronous motor |
CN112975306A (en) * | 2021-05-10 | 2021-06-18 | 四川轻舟汽车轻量化技术有限公司 | Production method for hot stamping forming of automobile parts |
US11913488B2 (en) | 2021-05-27 | 2024-02-27 | Rb&W Manufacturing Llc | Self-clinching and self-piercing construction element with multi-purpose pilot |
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AS | Assignment |
Owner name: MARTINREA INTERNATIONAL INC., CANADA Free format text: ASSIGNMENT OF ASSIGNORS INTEREST;ASSIGNOR:CHANKO, ROBERT;REEL/FRAME:020049/0882 Effective date: 20071027 |
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STCB | Information on status: application discontinuation |
Free format text: ABANDONED -- FAILURE TO RESPOND TO AN OFFICE ACTION |