DE102008032911B4 - Process for producing a molded part - Google Patents
Process for producing a molded part Download PDFInfo
- Publication number
- DE102008032911B4 DE102008032911B4 DE102008032911.8A DE102008032911A DE102008032911B4 DE 102008032911 B4 DE102008032911 B4 DE 102008032911B4 DE 102008032911 A DE102008032911 A DE 102008032911A DE 102008032911 B4 DE102008032911 B4 DE 102008032911B4
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- DE
- Germany
- Prior art keywords
- aluminum
- aluminum sheet
- sheet
- forming
- partially formed
- 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.)
- Expired - Fee Related
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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
- B21D22/00—Shaping without cutting, by stamping, spinning, or deep-drawing
- B21D22/20—Deep-drawing
- B21D22/201—Work-pieces; preparation of the work-pieces, e.g. lubricating, coating
-
- 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
- B21D22/20—Deep-drawing
- B21D22/22—Deep-drawing with devices for holding the edge of the blanks
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- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
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- 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/13—Modifying the physical properties of iron or steel by deformation by hot working
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- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/04—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon
- C22F1/047—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of aluminium or alloys based thereon of alloys with magnesium as the next major constituent
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Crystallography & Structural Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Shaping Metal By Deep-Drawing, Or The Like (AREA)
- Forging (AREA)
Abstract
Verfahren zur Herstellung eines Aluminiumformteils (16) mit Hilfe eines Umformwerkzeugs (6), umfassend folgende Schritte: Einlegen eines Aluminiumbleches (2) in das Umformwerkzeug (6), Teilumformung des Aluminiumblechs (2) bei Raumtemperatur zu einem teilumgeformten Aluminiumblech (10), Warmauslagerung des teilumgeformten Aluminiumblechs (10) und anschließendes Endumformen des teilumgeformten Aluminiumblechs (10) bei Raumtemperatur in eine Endform des Aluminiumformteils (16).Method for producing an aluminum molding (16) with the aid of a forming tool (6), comprising the following steps: inserting an aluminum sheet (2) into the forming tool (6), partial deformation of the aluminum sheet (2) at room temperature into a partially formed aluminum sheet (10), hot aging the partially formed aluminum sheet (10) and then finish forming the partially formed aluminum sheet (10) at room temperature into a final shape of the aluminum mold piece (16).
Description
Die Erfindung betrifft ein Verfahren zur Herstellung eines Aluminiumformteils nach Anspruch 1.The invention relates to a method for producing an aluminum molding according to claim 1.
Zur Umformung von Aluminiumblechen zu Aluminiumformteilen beispielsweise als Karosserieteile für den Automobilbau gibt es verschiedene Verfahren. Zunächst wäre hierbei das Kaltumformen in seiner klassischen Form zu nennen. Hierbei werden bei Raumtemperatur gezielt Formänderungen bei gleichbleibender Masse und Stoffzusammensetzung eines Bleches durchgeführt. Bei Aluminiumblechen sind durch Kaltumformung keine Umformgrade zu erzielen, die die von Stählen übersteigen, wenn entsprechende Anforderungen an Festigkeit und Korrosion des Aluminiumbleches gestellt werden.For the transformation of aluminum sheets to aluminum moldings, for example, as body parts for the automotive industry, there are various methods. First of all, cold forming in its classical form should be mentioned here. In this case, targeted changes in shape are carried out at room temperature with the same mass and composition of a sheet. In the case of aluminum sheets, cold forming can not achieve a degree of deformation which exceeds that of steels, if the aluminum sheet has to meet the requirements for strength and corrosion.
Alternativ zum Kaltumformen werden Halbwarm- und Warmumformverfahren verwendet. Mit diesen Verfahren kann der Umformgrad im Vergleich zum Kaltumformen gesteigert werden. Bei der Halbwarmumformung wird das Blech auf eine Temperatur erwärmt, die noch unterhalb der Rekristallisationstemperatur des Werkstoffes liegt. Beim Warmumformen wird der Werkstoff oberhalb der Rekristallisationstemperatur umgeformt.As an alternative to cold forming, half-hot and hot-forming processes are used. With these methods, the degree of deformation can be increased compared to cold forming. In the warm forging, the sheet is heated to a temperature which is still below the recrystallization temperature of the material. During hot forming, the material is reshaped above the recrystallization temperature.
Aus der
Weiterhin zeigt die
Aus beiden Druckschriften geht kein spezielles Verfahren zur Herstellung eines Aluminiumformteils hervor.From both documents no special process for the production of an aluminum molding emerges.
Die Aufgabe der Erfindung besteht darin, ein Verfahren zur Herstellung eines Aluminiumformteils bereitzustellen, das gegenüber dem Stand der Technik kostengünstig herstellbar ist und wobei ein hoher Umformgrad bei vergleichsweise hoher Festigkeit erzielt werden kann.The object of the invention is to provide a method for producing an aluminum molding, which is inexpensive to produce compared to the prior art and wherein a high degree of deformation can be achieved with relatively high strength.
Die Lösung der Aufgabe besteht in einem Verfahren zur Herstellung eines Aluminiumformteils mit Hilfe eines Umformwerkzeugs mit den Merkmalen des Anspruchs 1.The solution of the problem consists in a method for producing an aluminum molding with the aid of a forming tool having the features of claim 1.
Hierbei wird ein Aluminiumblech in das Umformwerkzeug, beispielsweise in ein Presswerkzeug eingelegt und bei Raumtemperatur bis zu einem bestimmten Umformgrad teilumgeformt. Hierbei handelt es sich um ein so genanntes Kaltumformverfahren, das bei Raumtemperatur stattfindet. Unter Raumtemperatur wird hierbei eine Temperatur bis zu 80°C verstanden. Bevorzugt wird dem Aluminiumblech jedoch während des Umformprozesses keine zusätzliche Wärmeenergie zugeführt.Here, an aluminum sheet is inserted into the forming tool, for example in a pressing tool and partially formed at room temperature to a certain degree of deformation. This is a so-called cold forming process that takes place at room temperature. Room temperature is understood to mean a temperature of up to 80 ° C. Preferably, however, no additional heat energy is supplied to the aluminum sheet during the forming process.
Das teilumgeformte Werkstück wird nun in einem Zwischenglühprozess warmausgelagert. Anschließend wird dieses Werkstück in einem zweiten Kaltumformprozess zu dem endgültigen Formteil umgeformt.The partially formed workpiece is now warm-laid in an intermediate annealing process. Subsequently, this workpiece is formed in a second cold forming process to the final molded part.
Durch den Zwischenglühprozess werden Kaltverfestigungen, die beim ersten Teilumformprozess im Werkstück auftreten, reduziert, was einen weiteren, höheren Umformgrad ermöglicht.The intermediate annealing process reduces work hardening that occurs in the workpiece during the first part forming process, allowing for a further, higher degree of deformation.
Weitere vorteilhafte Ausgestaltungen der Erfindung ergeben sich aus den Unteransprüchen.Further advantageous embodiments of the invention will become apparent from the dependent claims.
Im Weiteren werden an Hand der folgenden Figuren weitere Merkmale uns Ausgestaltungsformen der Erfindung näher erläutert.Furthermore, further features and embodiments of the invention will be explained in more detail with reference to the following figures.
Dabei zeigen:Showing:
An Hand der
Zunächst wird ein Aluminiumblech
Das Aluminiumblech
Das mit Schmierstoff versehene Aluminiumblech
Dieses Aluminiumblech
Im nächsten Verfahrensschritt gemäß
Das Warmauslagern bewirkt einen Abbau der Kaltverfestigung im Material durch Ausheilen und Umordnen von Gitterfehlstellen. Daraus resultiert ein Absinken der Streckgrenze und eine Erhöhung der Bruchdehnung, was eine Erhöhung des Umformgrades zulässt.Hot aging causes a reduction in work hardening in the material by annealing and rearranging lattice defects. This results in a decrease in the yield strength and an increase in the elongation at break, which allows an increase in the degree of deformation.
Gemäß
Es soll noch darauf eingegangen werden, dass bei Verwendung von Temperaturbeständigen Schmierstoffen, beispielsweise Trockenschmierstoffen ein Reinigen des teilumgeformten Bleches
Im Übrigen weist das beschriebene Verfahren gegenüber den üblichen Warmumformverfahren niedrigere Prozesskosten auf, da insbesondere am Umformwerkzeug Kosten eingespart werden können. Dabei werden aber dieselben Umformgrade wie bei den Warmumformverfahren bei einem geringeren Kostenaufwand erzielt.Moreover, the described method has lower process costs compared to the customary hot forming methods, since costs can be saved, in particular, on the forming tool. However, the same degrees of deformation as in the hot forming process are achieved at a lower cost.
Gegenüber den klassischen Kaltumformverfahren werden deutlich höhere Umformgrade erzielt, wobei nur geringfügig höhere Kosten entstehen.Compared to the classic cold forming process, significantly higher degrees of deformation are achieved, with only slightly higher costs.
Claims (6)
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008032911.8A DE102008032911B4 (en) | 2008-07-12 | 2008-07-12 | Process for producing a molded part |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE102008032911.8A DE102008032911B4 (en) | 2008-07-12 | 2008-07-12 | Process for producing a molded part |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| DE102008032911A1 DE102008032911A1 (en) | 2009-03-19 |
| DE102008032911B4 true DE102008032911B4 (en) | 2017-05-11 |
Family
ID=40348733
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| DE102008032911.8A Expired - Fee Related DE102008032911B4 (en) | 2008-07-12 | 2008-07-12 | Process for producing a molded part |
Country Status (1)
| Country | Link |
|---|---|
| DE (1) | DE102008032911B4 (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112009000645B4 (en) | 2008-03-21 | 2022-02-10 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method of progressively deforming a polycrystalline sheet metal workpiece and method of progressively deforming a polycrystalline sheet metal workpiece |
| RU2777380C1 (en) * | 2021-11-22 | 2022-08-02 | Акционерное общество "Научно-производственное объединение "СПЛАВ" им. А.Н. Ганичева | Method for manufacturing shells of a complex profile with internal riffles |
Families Citing this family (15)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP2248926A1 (en) * | 2009-04-17 | 2010-11-10 | voestalpine Automotive GmbH | Method for producing a stamped part |
| DE102009031449A1 (en) | 2009-07-01 | 2010-03-25 | Daimler Ag | Production of an aluminum molded part comprises heating sheet aluminum in areas using inductive heating or flames and deep drawing in a deep drawing tool |
| DE102009056199A1 (en) | 2009-11-28 | 2011-06-01 | Daimler Ag | Method for deep-drawing aluminum sheet, involves inserting semi-finished product into work piece retainer of forming tool and heating surface area of work piece retainer before inserting semi-finished product by inductive heating device |
| DE102010032293A1 (en) | 2010-07-26 | 2012-01-26 | Daimler Ag | Deep-drawn metal sheet component manufacturing method for motor vehicle, involves applying lubricant to circuit board before heat treatment process is performed while maintaining high heat resistance property of board during process |
| DE102010055946A1 (en) | 2010-12-23 | 2011-08-25 | Daimler AG, 70327 | Producing metal mold part, comprises inserting metal sheet in a tool, molding a part of the metal sheet at room temperature to form partially-formed metal sheet, and partially providing a cold treatment to the partially-formed metal sheet |
| DE102011014052A1 (en) | 2011-03-16 | 2011-12-15 | Daimler Ag | Outer panel part manufacturing method for motor vehicle, involves deep-drawing metal sheet that is transformed in deep-drawing tool, where metal sheet and/or deep-drawing tool are heated to predetermined temperature during transformation |
| DE102011112463A1 (en) | 2011-08-27 | 2012-03-15 | Daimler Ag | Device for determining technological properties of metallic specimen, has inductor that is provided over entire measuring length of metallic specimen which is clamped in clamping device |
| DE102011112468A1 (en) | 2011-08-27 | 2013-02-28 | Christian Bergel | Coil arrangement for inductively heating metallic component, has coil made from wire and arranged in position relative to metallic component, where electric current flows via windings of coil in same direction during heating of component |
| DE102012006611A1 (en) | 2012-03-30 | 2012-12-27 | Daimler Ag | Heat treatment of component, preferably metallic component, comprises heating the component at a first predetermined temperature-time profile, quenching, and heating at a second predetermined temperature-time profile |
| DE102012007213A1 (en) | 2012-04-11 | 2012-11-29 | Daimler Ag | Producing aluminum molded part useful for producing vehicle body part, comprises heating aluminum plate to be molded, preferably aluminum sheet to solution annealing temperature and molding and simultaneously quenching heated aluminum plate |
| DE102012021091A1 (en) | 2012-10-26 | 2013-05-02 | Daimler Ag | Inductor coil for inductively heating metallic component, has windings arranged at distance to each other for inductively heating metallic component, where distance between windings is constant and amounts to maximum of specific mm |
| DE102012021032A1 (en) | 2012-10-26 | 2013-05-02 | Daimler Ag | Device for inductive heating of metallic workpiece e.g. aluminum sheet, has sleeve element that is made of ferromagnetic material and provided to encompass induction coil |
| CN106984684B (en) * | 2016-01-20 | 2021-05-18 | 福特环球技术公司 | Material punch forming method, vehicle ceiling forming method and assembly for forming material |
| DE102016208014A1 (en) * | 2016-05-10 | 2017-11-16 | Bayerische Motoren Werke Aktiengesellschaft | Method for producing a component |
| GB2590052B (en) * | 2019-09-25 | 2021-12-08 | Imp College Innovations Ltd | Aluminium forming method |
Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0598358A1 (en) * | 1992-11-13 | 1994-05-25 | The Furukawa Electric Co., Ltd. | Aluminum alloy sheet suitable for high-speed forming and process for manufacturing the same |
| FR2703072A1 (en) * | 1993-03-26 | 1994-09-30 | Pechiney Rhenalu | Sheets or strips made of Al alloys (5000 series) with low mechanical anisotropy and process for obtaining them |
| DE60102870T2 (en) * | 2000-06-12 | 2005-03-31 | Alcoa Inc. | Aluminum sheets with improved fatigue resistance and processes for their production |
-
2008
- 2008-07-12 DE DE102008032911.8A patent/DE102008032911B4/en not_active Expired - Fee Related
Patent Citations (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0598358A1 (en) * | 1992-11-13 | 1994-05-25 | The Furukawa Electric Co., Ltd. | Aluminum alloy sheet suitable for high-speed forming and process for manufacturing the same |
| FR2703072A1 (en) * | 1993-03-26 | 1994-09-30 | Pechiney Rhenalu | Sheets or strips made of Al alloys (5000 series) with low mechanical anisotropy and process for obtaining them |
| DE60102870T2 (en) * | 2000-06-12 | 2005-03-31 | Alcoa Inc. | Aluminum sheets with improved fatigue resistance and processes for their production |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE112009000645B4 (en) | 2008-03-21 | 2022-02-10 | GM Global Technology Operations LLC (n. d. Ges. d. Staates Delaware) | Method of progressively deforming a polycrystalline sheet metal workpiece and method of progressively deforming a polycrystalline sheet metal workpiece |
| RU2777380C1 (en) * | 2021-11-22 | 2022-08-02 | Акционерное общество "Научно-производственное объединение "СПЛАВ" им. А.Н. Ганичева | Method for manufacturing shells of a complex profile with internal riffles |
Also Published As
| Publication number | Publication date |
|---|---|
| DE102008032911A1 (en) | 2009-03-19 |
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Owner name: DAIMLER AG, DE Free format text: FORMER OWNER: DAIMLER AG, 70327 STUTTGART, DE |
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| R119 | Application deemed withdrawn, or ip right lapsed, due to non-payment of renewal fee |