EP2411548B1 - Verfahren zum herstellen partiell gehärteter stahlbauteile - Google Patents
Verfahren zum herstellen partiell gehärteter stahlbauteile Download PDFInfo
- Publication number
- EP2411548B1 EP2411548B1 EP10711386.2A EP10711386A EP2411548B1 EP 2411548 B1 EP2411548 B1 EP 2411548B1 EP 10711386 A EP10711386 A EP 10711386A EP 2411548 B1 EP2411548 B1 EP 2411548B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- component
- absorption mass
- absorption
- blank
- mass
- 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.)
- Active
Links
- 238000004519 manufacturing process Methods 0.000 title claims description 7
- 229910000760 Hardened steel Inorganic materials 0.000 title claims description 4
- 238000010521 absorption reaction Methods 0.000 claims description 74
- 238000010438 heat treatment Methods 0.000 claims description 25
- 238000000034 method Methods 0.000 claims description 21
- 229910000831 Steel Inorganic materials 0.000 claims description 12
- 239000010959 steel Substances 0.000 claims description 12
- 230000007704 transition Effects 0.000 claims description 9
- 239000002184 metal Substances 0.000 claims description 6
- 229910052751 metal Inorganic materials 0.000 claims description 6
- 230000005855 radiation Effects 0.000 claims description 5
- 229910045601 alloy Inorganic materials 0.000 claims description 2
- 239000000956 alloy Substances 0.000 claims description 2
- 238000001816 cooling Methods 0.000 description 13
- 239000000463 material Substances 0.000 description 7
- 229910000734 martensite Inorganic materials 0.000 description 4
- 229910001566 austenite Inorganic materials 0.000 description 3
- 238000000576 coating method Methods 0.000 description 3
- 238000009413 insulation Methods 0.000 description 3
- BASFCYQUMIYNBI-UHFFFAOYSA-N platinum Chemical compound [Pt] BASFCYQUMIYNBI-UHFFFAOYSA-N 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- HCHKCACWOHOZIP-UHFFFAOYSA-N Zinc Chemical compound [Zn] HCHKCACWOHOZIP-UHFFFAOYSA-N 0.000 description 2
- 239000000919 ceramic Substances 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000010586 diagram Methods 0.000 description 2
- 238000002474 experimental method Methods 0.000 description 2
- 239000000284 extract Substances 0.000 description 2
- 238000003825 pressing Methods 0.000 description 2
- 238000003466 welding Methods 0.000 description 2
- 229910052725 zinc Inorganic materials 0.000 description 2
- 239000011701 zinc Substances 0.000 description 2
- 0 CC(C1)=CC=C1*=C=C Chemical compound CC(C1)=CC=C1*=C=C 0.000 description 1
- 230000002411 adverse Effects 0.000 description 1
- 239000000969 carrier Substances 0.000 description 1
- 238000011109 contamination Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000006253 efflorescence Methods 0.000 description 1
- 230000001788 irregular Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003973 paint Substances 0.000 description 1
- 206010037844 rash Diseases 0.000 description 1
- 239000007779 soft material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000010792 warming Methods 0.000 description 1
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 1
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
- 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
- C21D9/0068—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for particular articles not mentioned below
-
- 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
- C21D1/68—Temporary coatings or embedding materials applied before or during heat treatment
- C21D1/70—Temporary coatings or embedding materials applied before or during heat treatment while heating or 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
- C21D2221/00—Treating localised areas of an article
Definitions
- the invention relates to a method for producing partially hardened steel components according to the preamble of claim 1.
- a method for producing a metal mold component wherein the metallic mold component is to have regions with a higher ductility, wherein the mold component is formed from a hardenable steel and first bring partial areas of a board to a temperature of 600 ° C and 900 ° C in a time of less than 30 seconds, whereupon the heat-treated board is formed in a press tool to the mold component and then the mold component is cooled in the press tool and thereby partially cured ,
- a mold component is first heated homogeneously to a temperature which is necessary for curing and then the circuit board in the press tool to the mold component final molded. In the press tool also takes place the required hardening.
- the homogeneously hardened component is then placed on a conveyor and oriented by fixations. On this conveyor, the mold components undergo a heating device in which by an inductor those areas which are to have a higher ductility, in a very short time again to a temperature of 600 ° to 800 ° C and then cooled so slowly that a renewed Hardening does not take place, but these parts are in turn ductile.
- This method has the disadvantage that it requires several steps and is also energy-intensive.
- a B-pillar for a motor vehicle which consists of a longitudinal profile made of steel, wherein the longitudinal profile has a first length section with a predominantly martensitic material structure and a strength above 1,400 N / mm 2 and a second length section of higher ductility with a predominantly ferritic-pearlitic Material structure and a strength below 850 N / mm 2 should have.
- the moldboard is first completely and homogeneously heated to an austenitizing temperature and brought during the transfer or transport of the board in the curing tool by targeted, not too abrupt cooling to a temperature well below the Austenitmaschinestemperatur, so that when hot forming no purely martensitic structure is set.
- the targeted cooling of a board or of a preformed component increases the cycle times and increases and necessitates additional method steps.
- both the attachment of the insulation and the removal of the insulation means additional steps that increase the cycle time and increase the cost of the process.
- a press-cured article and a method of curing the same is known.
- This component is intended to include hardened and uncured areas, wherein for curing the component or for curing the profile, an inductor is used, which at least partially heats the component to an austenitizing temperature and the inductor below a cooling device is tracked, for example, with water jet, which for the Hardening necessary rapid cooling makes.
- a cooling device for example, with water jet, which for the Hardening necessary rapid cooling makes.
- the object of the invention is to provide a method for producing partially hardened steel components, which is simple and inexpensive to carry out with high process reliability and well predictable hardness values in the different areas.
- an absorption mass is applied during the heating.
- the term "concerns" within the meaning of the invention also includes a small spacing, in particular a spacing of 0.5 to 2 mm between absorption mass and board.
- the absorption mass is a "cold" mass applied to the hot board during the furnace process. This mass extracts energy from the board via the contact surface or through the narrow gap via radiation.
- Heat transfer in the context of the invention comprises heat conduction through the support surface in direct contact with the absorption mass with the board and heat radiation at a small spacing. The mass thus partially absorbs the energy of the board, which is introduced through the furnace. Therefore, in the following, a "cold" applied mass is also referred to as absorption mass. In the invention thus takes place a heat flow from the furnace chamber through the sheet of the component in the absorption mass. Insulation does not take place.
- the components are not partially or only briefly brought over the austenite start temperature during the heating process.
- the material in these areas is not / only partially converted to austenite and can not be transformed into martensite during the pressing process (press hardening) in these areas.
- the areas that do not convert to martensite due to the previous heat treatment during press hardening have significantly lower strength than the areas that were brought to austenite start temperature during the heat treatment and then cured in the press.
- This partial non-austenitizing is achieved by partially applying the absorption mass to the component at the beginning of the heat treatment (before the component enters the oven).
- the absorption mass is applied to the component and partially replicates the shape of the component.
- this relatively large absorption mass heats up less than the component.
- energy is removed from the component at the support surface by the partial contact with the mass (the energy flow is always from warm to cold).
- the component heats up in these areas much slower and less than in the other areas where the mass is not applied.
- the soft areas can be specifically adjusted by the applied absorption mass. With the same contact surface but different thicknesses of the absorption mass (also over their extent), different strengths can be generated. It is thereby possible to set almost any strength between 500 and 1500 MPa and only by varying the thickness of the absorption mass or of the material used (even over their extent), of which the absorption mass is.
- the strength transition range between Hard and soft material is about 20-50mm, especially 20 to 30 mm.
- air gaps in particular in the edge region may be provided to make the hardness transition even wider.
- the absorption mass always has a correspondingly constant low temperature before it is returned to the oven. This can be realized in the series process in different ways during the return of the furnace carrier.
- a large, precisely adjustable and homogeneous transition range from hard to soft causes, for example, that the component can absorb the occurring stresses homogeneously in the transition region from hard to soft or "softly” cushioning and thus prevents the component is partially loaded too much and possibly breaks in the crash and leads to component failure.
- a larger transition area also prevents, with certain component geometries, the component tearing in the area of welding points introduced in the bodyshell. It is also possible to influence the behavior of the component in the event of a crash precisely and accurately by means of precisely defined ductile areas in the area of welding points.
- heat shields are provided on the side of the absorption mass opposite the component. These heat shields can be made of different materials, in particular of ceramic or metallic materials.
- the heat absorption of the absorption mass and / or the réelleablebleche be selectively controlled by the radiation from the furnace chamber via appropriately selected emissivities (surface condition, coating, paint).
- the heat absorption can be influenced by the radiation of the board also targeted.
- an absorption mass is placed on a sheet to be austenitized, for example in the form of a steel square.
- absorption material is any form of heat-resistant metals such as Ampco alloys and steels, especially heat-resistant steels, but also ceramic bodies in question.
- Crucial criteria for usability are the thermal conductivity and the heat capacity.
- the absorption mass in this case has an outer shape or contour, which, if appropriate also matched to the formed part, corresponds to the areas which are to remain softer. In particular, the absorption mass can of course also have a deviating from the simple cuboid shape, complex irregular shape with recesses.
- Fig. 2 a heating curve for the board and a heating curve for absorption mass is shown.
- the absorption mass is heated with a considerable delay and while the board in the uncovered area at 720 ° from the oven is taken to press-harden, the absorption mass and thus the underlying sheet has a temperature of less than 600 ° C, in which a rapid subsequent cooling does not lead to a cure.
- the board after removing the absorption mass and cooling shows the appearance after Fig. 3 It can be seen that in the region in which the absorption mass was applied, the sheet has a substantially unaltered bright metallic appearance.
- the hardness transition range from the hard region to the soft region below the absorption mass is 20 mm to 50 mm, particularly 20 mm to 30 mm.
- the absorption mass has a shape which is matched to the shape of a finished formed workpiece.
- This finished formed workpiece is then heated for the purpose of curing and cooled after heating in a mold without substantial transformation.
- heating up as in Fig. 4 shown, either the absorption mass placed on the component lying in the furnace to leak the underlying sheet with a lower temperature from the oven or, as in Fig. 9 shown, the component placed so that it rests partially on the absorption mass. The effect for warming up is the same.
- Fig. 10 a diagram is shown in which were measured at a component during the heating temperatures, namely once in the range of an underlying absorption mass and once in a region in which no absorption mass was present. It can be seen from the diagram that the temperature of the component is above the absorption mass in a non-critical range, which means that due to the significantly lower heating no hardness will be achieved here.
- the absorption mass can be designed so that either a flat board or an already preformed component in the areas that are to remain softer, rests on this absorption mass, optionally in some areas with a slightly larger air gap, in particular an air gap of 4 mm to 10 mm thickness to realize hardness transitions.
- a preferred application of the absorption mass is, for example, the production of round or circular softer regions on a component or a circuit board, in particular in the flange region at locations where a joint is to be performed.
- This is particularly advantageous for welded joints, because it has been shown that by the heat treatment of galvanized high-hardenable steel sheets hardening by the surface of the zinc layer partially changed by oxide coatings so that the weldability is reduced. If these areas are left soft with absorption masses, in particular by an absorption mass which is elongated, for example, in the area of the flange and has rounded columnar projections on which the component rests, areas can be achieved in which the zinc surface is not adversely affected, then that here a very good weldability is maintained. Also for mechanical reasons, this is advantageous because the welds remain ductile even in these softer areas and allow so-called Ausknöpfbrüche, so that a preferred fracture pattern in the industry is achieved.
- the absorption mass can be actively cooled by a cooling section after the furnace process on the return path of the furnace support. Before the absorption mass returns to the furnace, this cooling distance ensures that the temperature of the mass is always a constant low temperature having.
- Different cooling media can be used to cool the absorption mass, such as compressed air or nitrogen.
- the oven supports can be modified in such a way that you can attach the absorption mass by means of robots or suitable device on the furnace support and remove. This can be realized in the series process as follows.
- the furnace supports are returned above the furnace.
- the oven holders stay for about 20 seconds always in the same place.
- a robot or a suitable device can be positioned, which removes the hot absorption mass from its holder and then attaches a cold absorption mass.
- the hot absorption mass may be fed to a cooling circuit (active or passive) which cools the hot absorption mass until reuse. This ensures that the absorption mass always extracts the same energy from the component in the oven during the oven process.
- Partial austenitizing may be followed by partial press hardening.
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)
- Heat Treatment Of Articles (AREA)
- Heat Treatments In General, Especially Conveying And Cooling (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102009015013A DE102009015013B4 (de) | 2009-03-26 | 2009-03-26 | Verfahren zum Herstellen partiell gehärteter Stahlbauteile |
PCT/EP2010/054019 WO2010109012A1 (de) | 2009-03-26 | 2010-03-26 | Verfahren zum herstellen partiell gehärteter stahlbauteile |
Publications (2)
Publication Number | Publication Date |
---|---|
EP2411548A1 EP2411548A1 (de) | 2012-02-01 |
EP2411548B1 true EP2411548B1 (de) | 2013-06-26 |
Family
ID=42309460
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP10711386.2A Active EP2411548B1 (de) | 2009-03-26 | 2010-03-26 | Verfahren zum herstellen partiell gehärteter stahlbauteile |
Country Status (7)
Country | Link |
---|---|
US (1) | US8597441B2 (zh) |
EP (1) | EP2411548B1 (zh) |
CN (1) | CN102365375B (zh) |
DE (1) | DE102009015013B4 (zh) |
ES (1) | ES2429021T3 (zh) |
WO (1) | WO2010109012A1 (zh) |
ZA (1) | ZA201105487B (zh) |
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021110702A1 (de) | 2021-04-27 | 2022-10-27 | Voestalpine Metal Forming Gmbh | Verfahren und Vorrichtung zum Herstellen gehärteter Stahlbauteile mit unterschiedlich duktilen Bereichen |
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SE0702513L (sv) * | 2007-11-15 | 2009-04-28 | Gestamp Hardtech Ab | B-stolpe till fordon |
MX2012008682A (es) | 2010-01-29 | 2012-11-12 | Tata Steel Nederland Technology Bv | Proceso para un tratamiento termico de material de tira metalica, y material de tira metalica producida de esta manera. |
DE102010048209C5 (de) | 2010-10-15 | 2016-05-25 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung eines warmumgeformten pressgehärteten Metallbauteils |
ES2851176T3 (es) | 2010-12-24 | 2021-09-03 | Voestalpine Stahl Gmbh | Método para conformar y endurecer chapas de acero recubiertas |
DE102011053939B4 (de) | 2011-09-26 | 2015-10-29 | Voestalpine Stahl Gmbh | Verfahren zum Erzeugen gehärteter Bauteile |
DE102011053941B4 (de) | 2011-09-26 | 2015-11-05 | Voestalpine Stahl Gmbh | Verfahren zum Erzeugen gehärteter Bauteile mit Bereichen unterschiedlicher Härte und/oder Duktilität |
EP2562034B1 (de) | 2011-08-25 | 2017-10-04 | Adient Luxembourg Holding S.à r.l. | Profilbauteil für einen Fahrzeugsitz, Verfahren und Vorrichtung zur Herstellung eines Profilbauteils |
DE102011056444C5 (de) | 2011-12-14 | 2015-10-15 | Voestalpine Metal Forming Gmbh | Verfahren und Vorrichtung zum partiellen Härten von Blechbauteilen |
CN102492818B (zh) * | 2011-12-24 | 2013-12-18 | 山东普利森集团有限公司 | 镶钢导轨的热处理工艺 |
DE102012006941B4 (de) * | 2012-03-30 | 2013-10-17 | Salzgitter Flachstahl Gmbh | Verfahren zur Herstellung eines Bauteils aus Stahl durch Warmumformen |
DE202012007777U1 (de) * | 2012-06-22 | 2012-09-18 | Steinhoff & Braun's Gmbh | Vorrichtung zur Herstellung eines Metallbauteils |
DE102013100682B3 (de) * | 2013-01-23 | 2014-06-05 | Voestalpine Metal Forming Gmbh | Verfahren zum Erzeugen gehärteter Bauteile und ein Strukturbauteil, welches nach dem Verfahren hergestellt ist |
DE102013212816B4 (de) | 2013-07-01 | 2016-03-24 | Volkswagen Aktiengesellschaft | Verfahren zur Herstellung eines partiell pressgehärteten Blechformteils durch direktes Presshärten |
DE102013108044B3 (de) * | 2013-07-26 | 2014-11-20 | Voestalpine Metal Forming Gmbh | Kühlkörper mit Abstandhalter |
DE102014211241A1 (de) | 2014-06-12 | 2015-12-17 | Sms Elotherm Gmbh | Verfahren und Erwärmungsanlage für das serienmäßige Erwärmen von Blechplatinen mit Ausbildung unterschiedlicher Temperaturzonen |
DE102014215365A1 (de) | 2014-08-05 | 2016-02-11 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Herstellung von warmumgeformten Bauteilen |
DE102015203338A1 (de) | 2015-02-25 | 2016-08-25 | Bayerische Motoren Werke Aktiengesellschaft | Positioniervorrichtung für ein Blechbauteil |
DE102015113056B4 (de) | 2015-08-07 | 2018-07-26 | Voestalpine Metal Forming Gmbh | Verfahren zum kontaktlosen Kühlen von Stahlblechen und Vorrichtung hierfür |
US20180245173A1 (en) | 2015-05-29 | 2018-08-30 | Voestalpine Stahl Gmbh | Method for Contactlessly Cooling Steel Sheets and Device Therefor |
DE102016109095B4 (de) * | 2015-11-20 | 2018-09-13 | Voestalpine Metal Forming Gmbh | Vorrichtung und Verfahren zum partiellen Härten von Stahlblechbauteilen |
DE102016201025A1 (de) * | 2016-01-25 | 2017-07-27 | Schwartz Gmbh | Wärmebehandlungsverfahren und Wärmebehandlungsvorrichtung |
ES2827455T3 (es) * | 2016-02-25 | 2021-05-21 | Benteler Automobiltechnik Gmbh | Método de fabricación de un componente de automóvil con al menos dos zonas de resistencia mutuamente diferentes |
WO2018115914A1 (en) * | 2016-12-19 | 2018-06-28 | Arcelormittal | A manufacturing process of hot press formed aluminized steel parts |
DE102017125473B3 (de) | 2017-10-30 | 2019-03-28 | Voestalpine Metal Forming Gmbh | Verfahren und Vorrichtung zur Herstellung von partiell gehärteten Stahlblechbauteilen |
DE102018130860A1 (de) | 2018-12-04 | 2020-06-04 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Warmumformung eines, insbesondere plattenförmigen, Halbzeugs |
CN110936589A (zh) * | 2019-04-18 | 2020-03-31 | 陈鹏 | 不同区域有多种导热效果的热压模具 |
ES2967460T3 (es) * | 2019-11-08 | 2024-04-30 | Autotech Eng Sl | Pieza de chapa metálica conformada para una carrocería de vehículo y procedimiento de producción correspondiente |
DE102020103276A1 (de) | 2020-02-10 | 2021-08-12 | Benteler Automobiltechnik Gmbh | Ofen zur partiellen Erwärmung von Metallbauteilen |
DE102022000670A1 (de) | 2022-02-24 | 2023-08-24 | Mercedes-Benz Group AG | Verfahren zur Wärmebehandlung eines Prüfkörpers sowie Prüfkörper |
Family Cites Families (8)
Publication number | Priority date | Publication date | Assignee | Title |
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US4506822A (en) * | 1982-03-18 | 1985-03-26 | The United States Of America As Represented By The United States Department Of Energy | Method for brazing together planar and nonplanar metal members |
JP3305952B2 (ja) | 1996-06-28 | 2002-07-24 | トヨタ自動車株式会社 | センターピラーリーンフォースの高周波焼入れ強化方法 |
DE19743802C2 (de) | 1996-10-07 | 2000-09-14 | Benteler Werke Ag | Verfahren zur Herstellung eines metallischen Formbauteils |
DE20014361U1 (de) | 2000-08-19 | 2000-10-12 | Benteler Ag, 33104 Paderborn | B-Säule für ein Kraftfahrzeug |
DE10162415A1 (de) | 2001-12-19 | 2003-07-03 | Siempelkamp Pressen Sys Gmbh | Verfahren zum Herstellen eines Werkstückes aus Metall sowie Rohling für die Herstellung eines Werkstückes im Wege einer Warmumformung |
DE10212819B4 (de) | 2002-03-22 | 2004-07-08 | Benteler Automobiltechnik Gmbh | Verfahren zur Herstellung eines metallischen Bauteils |
DE10356679A1 (de) | 2003-11-28 | 2005-07-21 | Rolls-Royce Deutschland Ltd & Co Kg | Verfahren und Vorrichtung zur Beschichtung oder Wärmebehandlung von BLISK-Scheiben für Fluggasturbinen |
DE102006018406B4 (de) * | 2006-03-06 | 2012-04-19 | Elisabeth Braun | Verfahren zum Erwärmen von Werkstücken, insbesondere zum Presshärten vorgesehener Blechteile |
-
2009
- 2009-03-26 DE DE102009015013A patent/DE102009015013B4/de active Active
-
2010
- 2010-03-06 US US13/258,085 patent/US8597441B2/en active Active
- 2010-03-26 CN CN201080013788.XA patent/CN102365375B/zh active Active
- 2010-03-26 WO PCT/EP2010/054019 patent/WO2010109012A1/de active Application Filing
- 2010-03-26 EP EP10711386.2A patent/EP2411548B1/de active Active
- 2010-03-26 ES ES10711386T patent/ES2429021T3/es active Active
-
2011
- 2011-07-26 ZA ZA2011/05487A patent/ZA201105487B/en unknown
Cited By (1)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102021110702A1 (de) | 2021-04-27 | 2022-10-27 | Voestalpine Metal Forming Gmbh | Verfahren und Vorrichtung zum Herstellen gehärteter Stahlbauteile mit unterschiedlich duktilen Bereichen |
Also Published As
Publication number | Publication date |
---|---|
US20120097298A1 (en) | 2012-04-26 |
DE102009015013B4 (de) | 2011-05-12 |
ES2429021T3 (es) | 2013-11-12 |
US8597441B2 (en) | 2013-12-03 |
DE102009015013A1 (de) | 2010-11-25 |
ZA201105487B (en) | 2012-08-29 |
CN102365375A (zh) | 2012-02-29 |
CN102365375B (zh) | 2014-07-30 |
WO2010109012A1 (de) | 2010-09-30 |
EP2411548A1 (de) | 2012-02-01 |
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