EP3259377B1 - Procédé de chauffage d'une tôle par conduction et dispositif de chauffage pour ledit procédé - Google Patents
Procédé de chauffage d'une tôle par conduction et dispositif de chauffage pour ledit procédé Download PDFInfo
- Publication number
- EP3259377B1 EP3259377B1 EP15787138.5A EP15787138A EP3259377B1 EP 3259377 B1 EP3259377 B1 EP 3259377B1 EP 15787138 A EP15787138 A EP 15787138A EP 3259377 B1 EP3259377 B1 EP 3259377B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- electrode
- sheet
- metal sheet
- conductive heating
- electrodes
- 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.)
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- 229910052751 metal Inorganic materials 0.000 title claims description 43
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- 229910000831 Steel Inorganic materials 0.000 description 2
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- FYYHWMGAXLPEAU-UHFFFAOYSA-N Magnesium Chemical compound [Mg] FYYHWMGAXLPEAU-UHFFFAOYSA-N 0.000 description 1
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 229910052782 aluminium Inorganic materials 0.000 description 1
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 description 1
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Images
Classifications
-
- H—ELECTRICITY
- H05—ELECTRIC TECHNIQUES NOT OTHERWISE PROVIDED FOR
- H05B—ELECTRIC HEATING; ELECTRIC LIGHT SOURCES NOT OTHERWISE PROVIDED FOR; CIRCUIT ARRANGEMENTS FOR ELECTRIC LIGHT SOURCES, IN GENERAL
- H05B3/00—Ohmic-resistance heating
- H05B3/0004—Devices wherein the heating current flows through the material to be heated
-
- 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
- C21D1/34—Methods of heating
- C21D1/40—Direct resistance heating
-
- 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
- C21D9/40—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for rings; for bearing races
Definitions
- the invention relates to a method for conductive heating of a sheet for preparation of the sheet on a subsequent shaping press hardening process, wherein the sheet or at least one conductively heated portion of the sheet has an outer contour which is rectangular or non-rectangular, wherein to carry out the conductive heating at least one electrode having a contact region is brought into electrical contact with the metal sheet, and the electric current for conducting the conductive heating is fed into the metal sheet via the contact region and / or is discharged from the metal sheet.
- the invention also relates to a conductive heating device for carrying out a method for conductive heating of a sheet.
- the invention relates to the field of metalworking, in particular the production of parts made of sheet metal, such as. B. vehicle body panels.
- the production of such sheet metal parts is z. B. on production lines, such. B. extrusion lines.
- Such production lines usually have forming facilities and Be4.000 Roaden and optionally facilities for performing other methods, such. B. shape property changes, coating, press hardening, etc., which are connected to each other in terms of process technology.
- components made of high-strength, ultra-high strength or ultra-high-strength material should be produced.
- the two connected by means of the transition electrodes trapezoidal surface sections turn a total rectangular surface section, connected to the one side at least one power supply electrode and at the other side at least one current dissipation electrode can be.
- the flexibility and applicability of the method according to the invention is further increased. It is advantageous to connect trapezoidal surface portions of the sheets with the same or mirror-symmetrical outer contour with each other via the transition electrodes.
- the parallel conductor may in particular be guided on an edge region of a rectangular or trapezoidal surface section to be heated. This has the advantage that by appropriate arrangement of such a parallel conductor certain areas of the sheet can be excluded from heating and at the same time the streamlines can be performed in a direction adjacent to the parallel conductor to be heated surface portion in the desired direction.
- the invention further relates to a conductive heating device for carrying out a method for conductive heating of a metal sheet, wherein the metal sheet or at least one region of the metal sheet to be conductively heated has an outer contour that is not rectangular is, wherein the conductive heating means comprises a matched to the outer contour arrangement of power supply and Stromableitungselektroden which are arranged piecewise separated from each other along the outer contour and are connected or connectable via separate electrical leads with mutually electrically isolated electrical energy sources, the electrical energy sources are dimensioned such that the same current densities are generated in the sheet between all pairs of associated power supply and Stromableitungselektroden.
- the conductive heating device is set up to carry out a method of the type described above.
- the electrical energy sources may be formed as DC sources.
- FIG. 6 shows a further embodiment of a conductive heating device 10, which, except for the differences explained below of the device 10 according to FIG. 4 equivalent.
- the conductive heating device is adapted with regard to the formation of the parallel conductors 26, 27 and the transmission electrodes 21 by forming these not as linearly extending electrodes, but according to the desired ones , are angled to be heated surface areas.
- the current supply electrode 12 and the current discharge electrode 19 are accordingly compared to FIG. 4 something shortened trained.
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
Claims (8)
- Procédé de chauffage par conduction d'une tôle (1) pour la préparation de la tôle en vue d'un processus de durcissement ultérieur à la presse de formage, dans lequel la tôle (1) ou au moins une zone à réchauffer par conduction de la tôle (1) présente un contour extérieur rectangulaire ou non rectangulaire, dans lequel, pour réaliser le chauffage par conduction, au moins une électrode (80) présentant une zone de contact (83) est amenée en contact électrique avec la tôle (1) et le courant électrique est injecté dans la tôle (1) et/ou extrait de la tôle (1) par l'intermédiaire de la zone de contact (83) pour réaliser le chauffage par conduction, caractérisé en ce que l'électrode (80) présente une zone de contact structurée inégale (83) pourvue d'une pluralité de surfaces de contact espacées les unes des autres (81), par lesquelles une pluralité de points de contact individuels, espacés les uns des autres, sont formés entre l'électrode (80) et la tôle (1).
- Procédé selon la revendication 1, caractérisé en ce que l'électrode (80) présentant la zone de contact inégale et structurée (83) est utilisée comme électrode d'injection de courant, comme électrode d'extraction de courant et/ou comme électrode de transmission.
- Procédé selon l'une des revendications précédentes, caractérisé en ce qu'une pluralité de petits points chauds sont générés dans la tôle (1) par la pluralité de points de contact pendant le chauffage par conduction.
- Procédé selon l'une des revendications précédentes, caractérisé en ce qu'un contour extérieur non rectangulaire de la zone à chauffer par conduction est divisé en sections de surface sensiblement rectangulaires et/ou trapézoïdales (2, 3, 4) et en ce qu'il est fourni, d'une manière qui correspond à la division en sections de surface (2, 3, 4), un agencement d'électrodes adapté à celle-ci, qui présente au moins des électrodes d'injection et d'extraction de courant (11-20) et, dans le cas de la présence d'au moins une section de surface trapézoïdale, des électrodes de transmission (31) .
- Procédé selon l'une des revendications précédentes, caractérisé en ce que des tôles (1) présentant chacune au moins une section de surface trapézoïdale (3) de leur zone à chauffer par conduction sont chauffées par conduction par paires, dans lequel une paire de tôles (1) sont reliées électriquement entre elles par une pluralité d'électrodes de transmission (31) qui sont électriquement isolées les unes des autres et disposées côte à côte le long d'une zone de transition d'une tôle (1) à l'autre.
- Dispositif de chauffage par conduction (10) pour la mise en oeuvre d'un procédé de chauffage par conduction d'une tôle (1), caractérisé en ce que le dispositif de chauffage par conduction comporte au moins une électrode (80) comme électrode d'injection de courant, comme électrode d'extraction de courant et/ou comme électrode de transmission, qui présente une zone de contact structurée inégale (83) pourvue d'une pluralité de surfaces de contact espacées les unes des autres (81), par lesquelles une pluralité de points de contact individuels, espacés les uns des autres, peuvent être formés entre l'électrode (80) et la tôle (1), dans lequel le dispositif de chauffage par conduction (10) est conçu pour mettre en oeuvre un procédé selon l'une des revendications 1 à 5.
- Dispositif de chauffage par conduction selon la revendication précédente, caractérisé en ce que la zone de contact structurée inégale (83) de l'électrode (80) est formée en totalité ou en partie par une pluralité de bords coudés qui sont disposés les uns derrière les autres à la manière d'un peigne en une rangée ou côte à côte en plusieurs rangées.
- Dispositif de chauffage par conduction selon l'une des revendications 6 ou 7, caractérisé en ce que la zone de contact structurée inégale (83) de l'électrode (80) présente des parties saillantes contenant les surfaces de contact (81) et en ce que des espaces intermédiaires en forme de rainures (82) sont formés entre les parties saillantes.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PCT/EP2015/053382 WO2015124604A1 (fr) | 2014-02-18 | 2015-02-18 | Procédé de chauffage par conduction d'une tôle et dispositif de chauffage correspondant |
| PCT/EP2015/068773 WO2016131501A1 (fr) | 2015-02-18 | 2015-08-14 | Procédé de chauffage par conduction d'une tôle, électrode et dispositif de chauffage pour ledit procédé |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP3259377A1 EP3259377A1 (fr) | 2017-12-27 |
| EP3259377B1 true EP3259377B1 (fr) | 2019-09-25 |
Family
ID=54361046
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP15787138.5A Active EP3259377B1 (fr) | 2015-02-18 | 2015-08-14 | Procédé de chauffage d'une tôle par conduction et dispositif de chauffage pour ledit procédé |
Country Status (2)
| Country | Link |
|---|---|
| EP (1) | EP3259377B1 (fr) |
| WO (1) | WO2016131501A1 (fr) |
Families Citing this family (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113997548A (zh) * | 2021-10-26 | 2022-02-01 | 吉林省正轩车架有限公司 | 一体成型门环ttp的工艺方法 |
Family Cites Families (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102006037637A1 (de) | 2006-08-10 | 2008-02-14 | Müller Weingarten AG | Verfahren und Vorrichtung zum konduktiven Erwärmen von Metallblechen |
| US9951397B2 (en) * | 2007-05-09 | 2018-04-24 | The Penn State Research Foundation | Apparatus for electrical-assisted incremental forming and process thereof |
| JP5556061B2 (ja) * | 2009-06-02 | 2014-07-23 | 東洋製罐株式会社 | 高周波誘電加熱溶着装置及び高周波誘電加熱溶着方法 |
| JP5403068B2 (ja) * | 2009-10-16 | 2014-01-29 | トヨタ自動車株式会社 | 通電加熱方法及び通電加熱装置 |
-
2015
- 2015-08-14 WO PCT/EP2015/068773 patent/WO2016131501A1/fr active Application Filing
- 2015-08-14 EP EP15787138.5A patent/EP3259377B1/fr active Active
Non-Patent Citations (1)
| Title |
|---|
| None * |
Also Published As
| Publication number | Publication date |
|---|---|
| EP3259377A1 (fr) | 2017-12-27 |
| WO2016131501A1 (fr) | 2016-08-25 |
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