EP1888794A1 - Procede de production d'un composant metallique comprenant des sections adjacentes presentant differentes proprietes de materiau, par trempe sous presse - Google Patents
Procede de production d'un composant metallique comprenant des sections adjacentes presentant differentes proprietes de materiau, par trempe sous presseInfo
- Publication number
- EP1888794A1 EP1888794A1 EP06763268A EP06763268A EP1888794A1 EP 1888794 A1 EP1888794 A1 EP 1888794A1 EP 06763268 A EP06763268 A EP 06763268A EP 06763268 A EP06763268 A EP 06763268A EP 1888794 A1 EP1888794 A1 EP 1888794A1
- Authority
- EP
- European Patent Office
- Prior art keywords
- sheet metal
- metal element
- forming
- component
- temperature
- 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.)
- Granted
Links
- 239000000463 material Substances 0.000 title claims abstract description 20
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 10
- 229910052751 metal Inorganic materials 0.000 claims abstract description 79
- 239000002184 metal Substances 0.000 claims abstract description 70
- 238000000034 method Methods 0.000 claims abstract description 32
- 238000005496 tempering Methods 0.000 claims abstract description 13
- 230000001105 regulatory effect Effects 0.000 claims abstract description 3
- 238000001816 cooling Methods 0.000 claims description 22
- 238000010438 heat treatment Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 230000008569 process Effects 0.000 abstract description 6
- 238000007493 shaping process Methods 0.000 abstract description 2
- 230000008901 benefit Effects 0.000 description 3
- 230000015572 biosynthetic process Effects 0.000 description 3
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 239000005457 ice water Substances 0.000 description 2
- 230000007704 transition Effects 0.000 description 2
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 description 2
- FAPWRFPIFSIZLT-UHFFFAOYSA-M Sodium chloride Chemical compound [Na+].[Cl-] FAPWRFPIFSIZLT-UHFFFAOYSA-M 0.000 description 1
- 239000006096 absorbing agent Substances 0.000 description 1
- 238000010521 absorption reaction Methods 0.000 description 1
- PALQHNLJJQMCIQ-UHFFFAOYSA-N boron;manganese Chemical compound [Mn]#B PALQHNLJJQMCIQ-UHFFFAOYSA-N 0.000 description 1
- 150000001875 compounds Chemical class 0.000 description 1
- 239000002826 coolant Substances 0.000 description 1
- 230000008878 coupling Effects 0.000 description 1
- 238000010168 coupling process Methods 0.000 description 1
- 238000005859 coupling reaction Methods 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000002349 favourable effect Effects 0.000 description 1
- 230000017525 heat dissipation Effects 0.000 description 1
- 239000007788 liquid Substances 0.000 description 1
- 229910000734 martensite Inorganic materials 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052757 nitrogen Inorganic materials 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 239000012266 salt solution Substances 0.000 description 1
- 230000035939 shock Effects 0.000 description 1
- 239000007858 starting material Substances 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 238000003466 welding Methods 0.000 description 1
Classifications
-
- 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
- B21D37/00—Tools as parts of machines covered by this subclass
- B21D37/16—Heating or cooling
-
- 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
- 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 metal component with adjoining sections of different material properties.
- methods of this type are used to produce by press hardening, for example, manganese-boron steels components that have a uniform hardness profile of up to 1,500 MPa. Due to their low ductility remaining after the hardening process, components made of such steels are usually first preformed, then heated to austenitizing temperature and then rapidly cooled in a mold under high pressure. The parts obtained in this way, in addition to their high hardness on a good dimensional stability.
- a hardened sheet metal profile can be produced by first forming an intermediate shape from a sheet metal blank, then heating this sheet metal profile to hardening temperature and finally cooling the heated sheet metal profile in a device similar to a deep drawing tool under the effect of a predetermined pressure.
- the intermediate form produced in the first step of the method already corresponds approximately to the final shape of the component to be produced.
- the device used for carrying out the known method has channel-like cooling arrangements, which, depending on the heat to be dissipated, are flushed through by oil, water, ice-water or saline solution. The cooling arrangements can be controlled separately from each other to form zones with mutually different degrees of hardness on the finished component.
- the invention proposes a method for producing a metal component with adjoining sections of different material properties, in which a heated to a forming temperature sheet metal element is formed in a forming tool into a final molded component, wherein the forming a tempering device for adjusting the temperature has at least one of its coming into contact during forming with the sheet metal element portions, and in which the forming speed is controlled in consideration of the duration with which the temperature-controlled portion of the forming tool is in contact with each adjacent thereto portion of the sheet metal element.
- the speed at which the transformation of the respectively processed sheet metal element takes place in its final shape so adjusted that with the tempered area of the tool, which have a relation to the adjacent sections different temperature, within an optimal for the desired work result
- Period of time come into contact with the zones of the sheet metal element to be treated separately and that this contact is maintained over an equally optimal period taking into account the other general forming conditions.
- the sheet metal element can be heated to a forming temperature according to the invention, from which it starts with a correspondingly rapid cooling to form hardened structures.
- the tempering device is designed as a cooling device, which cools its respectively assigned section of the forming tool to such a low temperature that the zone of the sheet metal element in contact with this cooled section is quenched with a speed sufficient for the formation of the desired hardened structure.
- the tempering device provided according to the invention can be designed as a heater be holding the portion of the tool, which is associated with the less hard zone of the finished sheet metal component, at such a high temperature that a contact of the sheet with this section a relatively soft structure is maintained.
- tempering devices If a plurality of tempering devices are present, then specifically cooled and heated sections of the tool can be arranged closely adjacent to one another with the aim of minimizing the spread of undefined compound areas at the transition between a zone of high hardness and its neighboring surroundings in the finished sheet metal part and thus to produce perfectly precisely defined zones with different material properties in the finished component.
- the inventively provided coupling of the forming speed of the position and propagation of the generated in the finished component zones of different material properties is in this context of particular importance.
- the forming speed can be selected according to the invention such that the zone in question comes into contact with the strongly cooled section of the tool as quickly as possible.
- the forming speed is reduced, for example, when a particular zone of the component is to cool particularly slowly in order to produce a softer microstructure there.
- all sheet metal elements made of metal materials are suitable for the application of the method according to the invention, the structure of which changes when heated or cooled.
- the method according to the invention can be used particularly advantageously for sheet metal elements which consist of steel.
- the advantages of the invention can be used particularly targeted.
- the sheet metal element used as the starting material in the method according to the invention is a flat sheet metal blank.
- the heated sheet metal element is finished, for example, finished in the form of a deep-drawing process in the forming tool.
- the targeted, locally limited cooling or heating treatment of the zones of the sheet metal element in which the special properties are to be generated takes place in the forming tool.
- a further advantage of the procedure according to the invention is that they are particularly suitable for processing sheet metal elements having regions of different thickness.
- the invention allows the formation of the desired, localized zones with certain material properties, which allow the forming speed and the respective temperature of the tool to adapt to the non-uniform thickness of the sheet metal element, that an optimal work result is obtained.
- This has a particularly advantageous effect when the sheet metal element is composed of different, materially joined together, in particular by welding, sheet metal pieces.
- Such sheet metal elements are commonly referred to as "tailored blanks". They are composed, for example, of pieces of sheet metal whose thickness or material properties, such as hardness and toughness, are adapted to the stresses to which the product produced from the tailored blank is exposed in practical use.
- the forming tool can be any type of tool which, taking into account the respective shaping of the component to be produced, is suitable for exerting the required forming and pressing forces on the respective deformed sheet metal element.
- Particularly suitable for this purpose are those forming tools which have a die and a die that can be set in the die for forming.
- the inventive method is particularly suitable for the production of body parts, which in practical Use are exposed to changing loads.
- spring strut receptacles can be produced particularly well, in which, for example, high strengths are required in the region of the strut tower, while higher extensibilities are required in the region of the flanks of the receptacles.
- a purely martensitic, particularly firm structure can be specifically produced in the region of the spring strut dome by rapidly cooling this region during the forming process according to the invention and at a high cooling rate.
- Another particularly advantageous application of the method according to the invention is the production of crash-relevant vehicle components which, in the event of a collision, must have a high energy absorption capacity and at the same time optimum strength.
- the invention makes it possible by targeted heating of the forming tool in certain sections in the finished component to form zones in which particularly high residual strains are ensured.
- Fig. 1 shows a forming tool in a first
- Fig. 5 is a generated in the forming tool component.
- the forming tool 1 is designed in the manner of a deep-drawing device and has a stationarily arranged die 2. In the die 2, a recess 3 is formed, which images the outer shape of the produced, forming a profile component B.
- the forming tool 1 comprises a punch 4, which determines the inner shape of the component B to be produced.
- the punch 4 can be moved by means of a setting device, not shown, from a starting position (FIG. 1) remote from the die 2 into its end position, in which it is completely retracted into the recess 3 of the die 2 (FIG. 3).
- the adjusting device comprises a control device which controls the speed with which the punch 4 moves into the recess 3 of the die 2.
- the punch 4 has a trapezoidal in cross-section basic shape with an end face 5 and obliquely to the end face 5 tapered side surfaces 6,7.
- the stamp 4 is carried by an integrally connected thereto carrier 8, the lateral edge portions 9,10 are in the manner of a collar laterally beyond the side surfaces 6,7 of the punch 4 at the upper edge.
- the lower edge surfaces 11,12 of the edge regions 9,10 are connected in a horizontal orientation to the side surfaces 6,7 of the punch 4.
- not preformed sheet metal elements E are processed in the illustrated embodiment, which are in the manner of tailored blanks of two welded together, consisting of a steel material sheet metal parts Tl, T2 assembled.
- the first sheet metal part 1 is thinner than the second sheet metal part T2 for weight savings.
- cooling channels 13 are introduced into the stamp.
- the cooling channels 13 are part of a further not shown as a cooling device first tempering. Depending on the respectively required degree of cooling, the cooling channels 13 are traversed by water, ice-water, a frozen salt solution, liquid nitrogen or another cooling medium which is suitable for the rapid removal of large amounts of heat.
- Formed tempering which is also not shown here in detail further. Through the channels 16 The tempering is promoted a cooling oil, which causes a moderate cooling of the die in this area.
- the sheet metal element E is first heated to austenitizing temperature in an oven, not shown here. Subsequently, the sheet metal element E is placed in the forming tool 1, so that it lies with its edge on the upper side of the die 2. If this is necessary for the further deformation of the sheet metal element E carried out in the forming tool 1, hold-downs, not shown, are now used, which hold down the sheet metal elements E in its edge region during the subsequent forming.
- the Nierdehaltekraft exerted by the holddown can be adjusted depending on the particular deformation rate, to allow an optimized Nachfie filed the material of the sheet metal element 4 in the recess 3.
- the punch 4 is placed at a high speed on the sheet metal element 4, so that the highly cooled end face 5 of the punch 4 quickly comes into intensive contact with its associated surface portion El of the sheet metal element E.
- the sheet metal element E is quenched in this way in its section El so fast that there forms a zone with a hardness which is higher than the hardness of the other, adjacent to the section El sections E2 and E3 of the sheet metal element E.
- the feed of the punch 4 is reduced in order not to cause cooling, in particular in the sections E2 and E3, which could lead to the formation of hardened structures.
- the feed of the punch 4 is reduced in order not to cause cooling, in particular in the sections E2 and E3, which could lead to the formation of hardened structures.
- the feed of the punch 4 is reduced in order not to cause cooling, in particular in the sections E2 and E3, which could lead to the formation of hardened structures.
- the feed of the punch 4 is reduced in order not to cause cooling, in particular in the sections E2 and E3, which could lead to the formation of hardened structures.
- the punch 4 After the punch 4 has fully retracted into the receptacle 3 of the die 2 and there pressed the sheet metal element 4 so finished that it has adopted the final shape of the manufactured component B, the punch moves 4 back to its original position. Due to the fact that the sheet metal element E has contracted as a result of cooling, the finished component B is still held on the punch 4, so that it can be easily removed from the die 2 and then separated from the punch 4.
- the component B produced in this way by forming the sheet metal element E has a first zone Zl with a hardness which is higher than the hardness of the adjacent zones Z2 and Z3 of the component B.
- the zone Z3 is followed by a zone Z4 of markedly lower hardness, however higher extensibility.
- This zone Z4 corresponds to the region of the sheet metal element E, which has been cooled during the forming in the region of the heating coils 14 only to a small extent.
- the zone Z2 corresponds to the region of the sheet metal element E, which has been cooled only moderately during the forming in the region of the side surface 15 of the die 2 and accordingly has an average hardness.
- Tl sheet metal parts of the sheet metal element E Zl, Z2, Z3, Z4 zones of the component B
Landscapes
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Chemical & Material Sciences (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)
- Heat Treatment Of Articles (AREA)
- Mounting, Exchange, And Manufacturing Of Dies (AREA)
Abstract
Priority Applications (1)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
PL06763268T PL1888794T3 (pl) | 2005-05-30 | 2006-05-24 | Sposób wytwarzania metalowego elementu konstrukcyjnego z przylegającymi do siebie odcinkami o różnych właściwościach materiałowych |
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102005025026A DE102005025026B3 (de) | 2005-05-30 | 2005-05-30 | Verfahren zum Herstellen eines Metallbauteils mit aneinander angrenzenden Abschnitten unterschiedlicher Materialeigenschaften |
PCT/EP2006/062579 WO2006128821A1 (fr) | 2005-05-30 | 2006-05-24 | Procede de production d'un composant metallique comprenant des sections adjacentes presentant differentes proprietes de materiau, par trempe sous presse |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1888794A1 true EP1888794A1 (fr) | 2008-02-20 |
EP1888794B1 EP1888794B1 (fr) | 2012-05-16 |
Family
ID=36804209
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP06763268A Active EP1888794B1 (fr) | 2005-05-30 | 2006-05-24 | Procede de production d'un composant metallique comprenant des sections adjacentes presentant differentes proprietes de materiau |
Country Status (11)
Country | Link |
---|---|
US (1) | US8118954B2 (fr) |
EP (1) | EP1888794B1 (fr) |
JP (1) | JP5568235B2 (fr) |
CN (2) | CN103382518B (fr) |
BR (1) | BRPI0610872B1 (fr) |
CA (1) | CA2610378C (fr) |
DE (1) | DE102005025026B3 (fr) |
ES (1) | ES2385579T3 (fr) |
PL (1) | PL1888794T3 (fr) |
PT (1) | PT1888794E (fr) |
WO (1) | WO2006128821A1 (fr) |
Families Citing this family (76)
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DE102006057864A1 (de) * | 2006-12-08 | 2008-07-17 | GM Global Technology Operations, Inc., Detroit | Verbund aus zwei Stahlblechen |
JP5011531B2 (ja) * | 2007-01-17 | 2012-08-29 | 国立大学法人長岡技術科学大学 | 深絞り加工装置 |
DE102007003745B4 (de) * | 2007-01-19 | 2017-04-06 | Müller Weingarten AG | Vorrichtung zur Herstellung pressgehärteter Blechbauteile |
EP2126144B1 (fr) * | 2007-02-23 | 2017-12-27 | Tata Steel IJmuiden BV | Procédé de mise en forme thermomécanique d'un produit final à très haute résistance et produit obtenu selon ledit procédé |
DE102007024797A1 (de) * | 2007-05-26 | 2008-11-27 | Linde + Wiemann Gmbh Kg | Verfahren zur Herstellung eines Profilbauteils, Profilbauteil und Verwendung eines Profilbauteils |
JP5425770B2 (ja) * | 2007-07-19 | 2014-02-26 | タタ、スティール、アイモイデン、ベスローテン、フェンノートシャップ | 長さ方向において厚さが変化する鋼ストリップ |
US8864921B2 (en) * | 2007-07-19 | 2014-10-21 | Tata Steel Ijmuiden B.V. | Method for annealing a strip of steel having a variable thickness in length direction |
EP2025771A1 (fr) * | 2007-08-15 | 2009-02-18 | Corus Staal BV | Procédé de production de bande d'acier revêtu pour produire des éléments taylorisés adaptés à la mise en forme thermomécanique, bande produite, et utilisation d'une telle bande revêtue |
FR2927828B1 (fr) * | 2008-02-26 | 2011-02-18 | Thyssenkrupp Sofedit | Procede de formage a partir de flan en materiau trempant avec refroidissement differentiel |
DE102008047971B3 (de) * | 2008-09-18 | 2010-05-12 | Aisin Takaoka Co., Ltd., Toyota | Verfahren und Vorrichtung zum Presshärten eines metallischen Formbauteils |
EP2175041A1 (fr) * | 2008-10-09 | 2010-04-14 | C.R.F. Società Consortile per Azioni | Procédé de formage à chaud de plaques métalliques |
ES2550109T5 (es) * | 2008-12-19 | 2018-11-28 | Voestalpine Metal Forming Gmbh | Procedimiento para la producción de un componente de acero con zonas de distinta dureza o ductilidad |
DE102008055106A1 (de) | 2008-12-22 | 2010-07-01 | Technische Universität Graz | Werkzeug für das Presshärten von Stählen sowie Verfahren zu dessen Herstellung |
BRPI1007351A2 (pt) * | 2009-01-23 | 2018-03-06 | Fukai Seisakuho CO., LTD. | método para moldagem comprensa de chapa de aço estampada |
DE102009003508B4 (de) * | 2009-02-19 | 2013-01-24 | Thyssenkrupp Steel Europe Ag | Verfahren zur Herstellung eines pressgehärteten Metallbauteils |
DE102009012348B4 (de) | 2009-03-09 | 2019-04-18 | Faurecia Emissions Control Technologies, Germany Gmbh | Verfahren und Werkzeugmaschine zum Herstellen von abgasreinigenden Vorrichtungen |
DE102009025896A1 (de) * | 2009-06-03 | 2011-01-05 | Technische Universität Graz | Warmumformung mit Einlegematerial |
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US8506732B2 (en) * | 2009-08-07 | 2013-08-13 | Radyne Corporation | Heat treatment of helical springs or similarly shaped articles by electric resistance heating |
JP5402404B2 (ja) * | 2009-08-28 | 2014-01-29 | 新日鐵住金株式会社 | 差厚金属板及びその製造方法 |
DE102009052210B4 (de) * | 2009-11-06 | 2012-08-16 | Voestalpine Automotive Gmbh | Verfahren zum Herstellen von Bauteilen mit Bereichen unterschiedlicher Duktilität |
KR100951042B1 (ko) | 2009-11-13 | 2010-04-05 | 현대하이스코 주식회사 | 냉각 효율을 향상시킨 열간 프레스 성형 장치 |
KR101164323B1 (ko) | 2009-12-28 | 2012-07-09 | 현대하이스코 주식회사 | 국부적으로 이종 강도를 갖는 열간 프레스 성형체 제조용 금형 시스템 및 이를 이용한 성형체 제조방법 |
KR101171450B1 (ko) | 2009-12-29 | 2012-08-06 | 주식회사 포스코 | 도금 강재의 열간 프레스 성형방법 및 이를 이용한 열간 프레스 성형품 |
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2005
- 2005-05-30 DE DE102005025026A patent/DE102005025026B3/de not_active Withdrawn - After Issue
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- 2006-05-24 CN CN201310254884.9A patent/CN103382518B/zh active Active
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- 2006-05-24 US US11/916,215 patent/US8118954B2/en active Active
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JP5568235B2 (ja) | 2014-08-06 |
PL1888794T3 (pl) | 2012-09-28 |
DE102005025026B3 (de) | 2006-10-19 |
CN103382518A (zh) | 2013-11-06 |
BRPI0610872A2 (pt) | 2010-08-03 |
US20080196800A1 (en) | 2008-08-21 |
EP1888794B1 (fr) | 2012-05-16 |
PT1888794E (pt) | 2012-07-12 |
US8118954B2 (en) | 2012-02-21 |
CA2610378A1 (fr) | 2006-12-07 |
BRPI0610872B1 (pt) | 2018-02-27 |
CA2610378C (fr) | 2013-06-18 |
WO2006128821A1 (fr) | 2006-12-07 |
ES2385579T3 (es) | 2012-07-26 |
CN103382518B (zh) | 2015-10-21 |
JP2008542031A (ja) | 2008-11-27 |
CN101189350A (zh) | 2008-05-28 |
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