WO2009067976A1 - Method for producing a shaped component comprising at least two joining areas having different ductility - Google Patents
Method for producing a shaped component comprising at least two joining areas having different ductility Download PDFInfo
- Publication number
- WO2009067976A1 WO2009067976A1 PCT/DE2008/001799 DE2008001799W WO2009067976A1 WO 2009067976 A1 WO2009067976 A1 WO 2009067976A1 DE 2008001799 W DE2008001799 W DE 2008001799W WO 2009067976 A1 WO2009067976 A1 WO 2009067976A1
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- temperature
- board
- furnace
- zone
- strip material
- Prior art date
Links
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
-
- 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
-
- F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
- F27—FURNACES; KILNS; OVENS; RETORTS
- F27B—FURNACES, KILNS, OVENS, OR RETORTS IN GENERAL; OPEN SINTERING OR LIKE APPARATUS
- F27B9/00—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity
- F27B9/02—Furnaces through which the charge is moved mechanically, e.g. of tunnel type; Similar furnaces in which the charge moves by gravity of multiple-track type; of multiple-chamber type; Combinations of furnaces
- F27B9/028—Multi-chamber type furnaces
-
- 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
-
- 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 invention relates to a method for producing a molded component having at least two structural regions of different ductility from a metallic circuit board separated from strip material, in which the board is heated differently in regions and then subjected to a thermoforming process for the purpose of forming into the molded component (preamble of claims 1, 2 and 3) ).
- DE 102 56 621 B3 describes a method for producing a molded component having at least two structural regions of different ductility and a continuous furnace for this process.
- a semifinished product made of a hardenable steel passes through a continuous furnace with at least two zones arranged side by side in the direction of passage and with different temperature levels.
- the semi-finished product is different heated so that set in a subsequent thermoforming process two microstructures of different ductility.
- DE 102 08 216 C1 also discloses a method for producing a molded component having at least two structural regions of different ductility.
- a semi-finished product made of a hardenable steel passes through a heating device with a homogeneous temperature distribution and is heated in this completely austenitizing.
- a portion of the first type of semifinished product is cooled during its further transport so that a transformation of the base material of austenite into ferrite and / or pearlite can take place. Consequently, no or only small amounts of martensite are formed during a subsequent thermoforming process. Consequently, the portion of the first type has a high ductility.
- the temperature is kept just high enough that in the subsequent thermoforming process sufficient martensite components are formed. Consequently, the partial area of the second type has lower ductility properties compared to the partial area of the first type, but higher strength.
- the invention is - based on the prior art - based on the object to provide a method for producing a molded component having at least two structural areas of different ductility, wherein on a scaling-based problems are avoided.
- a first solution of the problem underlying the invention consists in the features of claim 1.
- a material separated board first completely homogeneous heated to such a temperature and held for a certain time at this temperature level that forms a diffusion layer as a corrosion or scale protection layer, wherein material from the coating diffuses into the base material.
- the heating temperature is about 830 0 C to 950 0 C, preferably about 920 0 C.
- This homogeneous heating is advantageously carried out in a first zone of a multi-temperature zones having continuous furnace.
- a first type of board in a second zone of the furnace is cooled down to a temperature at which austenite decomposes. This is carried out at about 550 0 C to 700 0 C 1, preferably about 625 0 C. This lowered temperature level is maintained for a certain time, so that the decomposition of austenite also runs properly.
- the temperature is kept just high enough in at least one area of the second type that sufficient martensite portions can still be formed in the subsequent hot forming in a corresponding press.
- This temperature is 830 ° C to 950 0 C, preferably about 900 0 C.
- the regions of the first and second types of the molded component have different ductility properties, with the region of the second type having a lower ductility compared to the first type, but higher strength properties.
- the molded components produced in this way can be specifically adapted to specific requirements with regard to specific sections, to which they must comply in their capacity as structural component, for example as part of a vehicle body.
- a second solution of the problem underlying the invention consists in the features of claim 2.
- strip material from a high-strength boron steel provided with an Al / Si coating in a pre-furnace is continuously alloyed through in a first working step and then cooled.
- the temperature is 830 0 C to 950 0 C, preferably about 920 0 C.
- each severed board is transferred to a two-zone furnace.
- a region of the second type of the board is austenitized at a temperature of about 830 0 C to 950 0 C, preferably about 930 0 C.
- the area of the first kind is heated to a maximum temperature below the austenitizing temperature. This is about 550 0 C to 700 0 C, preferably about 680 0 C.
- This type of heat treatment means that the regions of the second type of the molded components, which are ultimately produced from the boards in a thermoforming process, have low ductility properties compared to the regions of the first type, but higher strength properties.
- a third solution of the problem underlying the invention consists in the features of claim 3.
- each board in a second step in a Vorofen to a temperature of about 830 0 C to 950 0 C, preferably about 920 0 C, homogeneously heated, held for a certain time at this temperature level and then cooled again.
- the formation of a diffusion layer takes place as a corrosion or scale protection layer from the Al / Si coating of the strip material.
- each board is then transferred to a two-zone furnace and returned to a first zone of the furnace in a first zone of the furnace to a temperature of about 550 0 C to 700 0 C, preferably about 680 0 C, heated.
- a second type zone in a second zone of the furnace is heated to a temperature of 830 0 C to 950 0 C, preferably about 920 0 C.
- the board is formed in a thermoforming process in a molding component.
- the mold member then has lower ductility properties, but higher strength properties, with respect to the second type region compared to the first type region.
- the local cooling of the area of the first type of board after heating can take place in that the area of the first type is briefly brought into contact with cooling jaws ,
- this can be done according to claim 6, characterized in that nitrogen is used as the gas.
- Figure 1 in the diagram, the production of a molded component with two structural areas of different ductility
- Figure 2 in the scheme of another method for producing a molded component with two structural areas of different ductility
- Figure 3 in the diagram a third method for producing a molded component with two structural areas of different ductility.
- FIGS. 1 to 3 denoted by 1 is a molded component having two structural regions 2, 3 of different ductility.
- the molded component 1 is the B-pillar of a vehicle body not otherwise shown.
- the production of the molded component 1 is made of a provided with an Al / Si coating high-strength boron steel.
- a strip material 4 made of such a steel is wound according to FIG. 1 into a coil 5.
- the strip material 4 is then withdrawn continuously from this coil 5 and passed through a punch 6.
- In the punch 6 boards 7 are separated from the strip material 4 and these then fed to a three temperature zones 8, 9, 10 having continuous furnace 11.
- each board 7 is heated to a temperature of about 830 0 C to 950 0 C, preferably 920 0 C, completely homogeneous and held for a certain time t at this temperature level ( Figure 2).
- an area 12 of the first type of the board 7 in a second zone 9 of the continuous furnace 11 is cooled to a temperature of about 550 0 C to 700 0 C, preferably about 625 0 C, and for a certain time t
- the heat-treated board 7 is then thermoformed in a press not shown in detail to the mold component 1.
- the temperature profile over time in the passage of the board 7 through the continuous furnace 11 with respect to the first type area 12 and the second area 13 of the board 7 is shown, the lower curve 14, the heat treatment of the area 12 of the first kind , ie the temperature profile of the "soft" section of a board 7, and the upper curve 15 the heat treatment of the area 13 of the second kind, Consequently, the temperature profile of the "cured" section of a board 7, show.
- FIG. 2 illustrates a method for producing a molded component 1 having two structural regions 2, 3 of different ductility, in which strip material 4 is first drawn off a coil 5 from a boron steel provided with an Al / Si coating and passed through a pre-furnace 16 , In the forehearth 16, the strip material is heated for 4 homogeneously to a temperature of about 830 0 C to 950 0 C, preferably about 920 0 C and held for a certain time at this temperature level. Subsequently, the thus heat-treated strip material 4 is wound into a coil 17. From this coil 17, the heat-treated strip material 4 is fed to a punch 18, where 4 blanks 7 are separated from the strip material.
- the strip material 4 can also be cooled immediately after leaving the pre-furnace 16 and then fed to the punch 18.
- These boards 7 from the pretreated strip material 4 are then transferred to a two-zone furnace 19 and herein with respect to a first type zone 12 in a first zone 20 of the furnace 19 to a temperature of about 550 0 C to 700 ° C, preferably about 680 0 C, as well as with respect to a region 13 of the second kind simultaneously in a second zone 21 of the furnace 19 to a temperature of about 830 0 C brought to 950 0 C.
- the heat-treated blanks 7 in this manner are finally formed in a hot-forming process (not shown in detail) into shaped components 1 having two different structural regions 2, 3.
- the lower curve 22 in the temperature-time diagram 23 of FIG. 2 shows the temperature profile in the area 12 of the first type of the board 7 and the upper curve 24 the temperature profile in the area 13 of the second type of each board 7.
- FIG. 3 illustrates how strip material 4 of a boron steel provided with an Al / Si coating is pulled off a coil 5 and fed directly to a punch 18.
- the punch 18 are from the strip material 4th Cut off boards 7 and then fed to a pre-furnace 16, where the boards 7 are heated to a temperature of about 830 0 C to 950 0 C, preferably about 920 0 C, homogeneously and X 2 held at this temperature level over a certain time.
- the thus heat-treated boards 7 are then transferred to the above-mentioned two-zone furnace 19 and here in the I. Zone 20 with respect to a region 12 of the first kind, as described, to a temperature of about 550 0 C to 700 0 C, preferably about 680 0 C, and with respect to a region 13 of the second kind simultaneously in the second zone 21 of the furnace 19 to one Temperature of about 830 0 C brought to 950 0 C.
- the temperature-time diagram 23 corresponds to that of FIG. 2.
- the thus heat-treated blanks 7 are finally formed in a thermoforming process to form components 1 with two different structural areas 2, 3.
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- Engineering & Computer Science (AREA)
- Chemical & Material Sciences (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Thermal Sciences (AREA)
- Physics & Mathematics (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- General Engineering & Computer Science (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Heat Treatment Of Articles (AREA)
- Heat Treatment Of Sheet Steel (AREA)
Abstract
Description
Claims
Priority Applications (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
EP08854114.9A EP2227570B1 (en) | 2007-11-29 | 2008-11-03 | Method for producing a shaped component comprising at least two joining areas having different ductility |
US12/745,360 US20100300584A1 (en) | 2007-11-29 | 2008-11-03 | Method for producing a shaped component having at least two structural regions of different ductility |
ES08854114.9T ES2620804T3 (en) | 2007-11-29 | 2008-11-03 | Procedure for manufacturing a molded element with at least two structural areas of different ductility |
CN200880105421A CN101796202A (en) | 2007-11-29 | 2008-11-03 | Method for producing a shaped component comprising at least two joining areas having different ductility |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102007057855A DE102007057855B3 (en) | 2007-11-29 | 2007-11-29 | Production of moldings with structure zones of different ductility comprises heat treatment of aluminum-silicon coated high-tensile steel blank, followed by treating zones at different temperature |
DE102007057855.7 | 2007-11-29 |
Publications (1)
Publication Number | Publication Date |
---|---|
WO2009067976A1 true WO2009067976A1 (en) | 2009-06-04 |
Family
ID=39777859
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/DE2008/001799 WO2009067976A1 (en) | 2007-11-29 | 2008-11-03 | Method for producing a shaped component comprising at least two joining areas having different ductility |
Country Status (7)
Country | Link |
---|---|
US (1) | US20100300584A1 (en) |
EP (1) | EP2227570B1 (en) |
CN (1) | CN101796202A (en) |
DE (1) | DE102007057855B3 (en) |
ES (1) | ES2620804T3 (en) |
RU (1) | RU2445381C1 (en) |
WO (1) | WO2009067976A1 (en) |
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CN102191362A (en) * | 2010-03-04 | 2011-09-21 | 基尔霍夫汽车德国有限责任公司 | Method for producing a molded part |
JP2015226936A (en) * | 2009-09-01 | 2015-12-17 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフトThyssenKrupp Steel Europe AG | Method and device for producing metal structural component |
US9340233B2 (en) | 2010-10-15 | 2016-05-17 | Benteler Automobiltechnik Gmbh | Method for producing a hot-formed and press-hardened metal component |
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DE102009052210B4 (en) * | 2009-11-06 | 2012-08-16 | Voestalpine Automotive Gmbh | Method for producing components with regions of different ductility |
WO2011057661A1 (en) * | 2009-11-11 | 2011-05-19 | Siemens Aktiengesellschaft | Component having areas of different ductility and method for producing a component |
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2007
- 2007-11-29 DE DE102007057855A patent/DE102007057855B3/en active Active
-
2008
- 2008-11-03 ES ES08854114.9T patent/ES2620804T3/en active Active
- 2008-11-03 US US12/745,360 patent/US20100300584A1/en not_active Abandoned
- 2008-11-03 CN CN200880105421A patent/CN101796202A/en active Pending
- 2008-11-03 WO PCT/DE2008/001799 patent/WO2009067976A1/en active Application Filing
- 2008-11-03 EP EP08854114.9A patent/EP2227570B1/en active Active
- 2008-11-03 RU RU2010126492/02A patent/RU2445381C1/en active
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Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
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JP2015226936A (en) * | 2009-09-01 | 2015-12-17 | ティッセンクルップ スチール ヨーロッパ アクチェンゲゼルシャフトThyssenKrupp Steel Europe AG | Method and device for producing metal structural component |
CN102191362A (en) * | 2010-03-04 | 2011-09-21 | 基尔霍夫汽车德国有限责任公司 | Method for producing a molded part |
US9340233B2 (en) | 2010-10-15 | 2016-05-17 | Benteler Automobiltechnik Gmbh | Method for producing a hot-formed and press-hardened metal component |
DE102010048209C5 (en) * | 2010-10-15 | 2016-05-25 | Benteler Automobiltechnik Gmbh | Method for producing a hot-formed press-hardened metal component |
Also Published As
Publication number | Publication date |
---|---|
DE102007057855B3 (en) | 2008-10-30 |
RU2010126492A (en) | 2012-01-10 |
EP2227570A1 (en) | 2010-09-15 |
RU2445381C1 (en) | 2012-03-20 |
CN101796202A (en) | 2010-08-04 |
US20100300584A1 (en) | 2010-12-02 |
ES2620804T3 (en) | 2017-06-29 |
EP2227570B1 (en) | 2017-01-25 |
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