EP1651788A2 - Verfahren und vorrichtung zum abschrecken eines gussteils - Google Patents
Verfahren und vorrichtung zum abschrecken eines gussteilsInfo
- Publication number
- EP1651788A2 EP1651788A2 EP04738672A EP04738672A EP1651788A2 EP 1651788 A2 EP1651788 A2 EP 1651788A2 EP 04738672 A EP04738672 A EP 04738672A EP 04738672 A EP04738672 A EP 04738672A EP 1651788 A2 EP1651788 A2 EP 1651788A2
- Authority
- EP
- European Patent Office
- Prior art keywords
- casting
- quenching medium
- flow rate
- quenching
- quenched
- 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
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
- C21D1/56—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering characterised by the quenching agents
- C21D1/613—Gases; Liquefied or solidified normally gaseous material
-
- 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
- C21D9/34—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tyres; for rims
-
- 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
-
- 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
- C22F1/043—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 silicon as the next major constituent
-
- 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
- C21D1/667—Quenching devices for spray quenching
Definitions
- the invention relates to a method for quenching a casting according to the preamble of claim 1.
- the invention relates to a method for heat treating a casting according to the preamble of patent claim 6.
- the invention further relates to a device for carrying out the method for quenching a casting.
- a method for quenching a casting of metal in which a cooling of the heated to 250 ° C to 400 ° C casting in still air. Deterrence of the casting is not provided.
- the object of the present invention is to specify a method for quenching a casting or a method for heat treating a casting and a device for carrying out the said methods such that a distortion-minimized casting is produced having improved mechanical properties adapted to the shape thereof.
- the invention has the features of claim 1.
- the particular advantage of the method according to claim 1 is that compared to the quenching by means of a liquid quenching medium, the delay of the casting can be significantly reduced. This results in a saving of material, an energy saving and a saving of chips that are incurred in the machining further processing. Furthermore, shorter cycle times result from the Absehreckungsvon invention, because a faster solidification of the crystal components occurs.
- the method according to the invention makes it possible to optimally adapt the strength values or hardness values to the requirements of the different segments of the casting.
- the cooling conditions are optimally adapted to the different wall thickness segments of the wheel.
- the deterrence is carried out by supplying room air of a predetermined flow rate, so that the production engineering effort can be kept relatively low.
- the inventive method according to claim 6 allows improved mechanical properties of the casting as well as a delay minimization. This is achieved by optimally coordinating the process steps “solution annealing”, “quenching” and “heat aging”.
- the device according to the invention has the features of patent claim 10.
- the particular advantage of the device according to the invention according to claim 10 is that by the controlled quenching by means of a gaseous quenching a targeted distribution of different
- Strength values or hardness values in the casting is made possible.
- the primary aim of the invention is not quenching as fast as possible, but a controlled quenching of the casting, in which a sliding transition takes place between segments of the casting with regard to the strength or hardness values.
- a slower cooling of the casting areas located higher away from the entrance of the quenching medium takes place
- the hub region has a lower hardness than a horn region of the rim, which has a smaller wall thickness and faces the passages of the inflowing quenching medium.
- the strength distribution runs continuously in radial direction tion of an inner spoke region of low strength to an outer spoke region of higher strength.
- this results in damping properties of the wheel, which are favorable for continuous load or extreme load of the wheel of a motor vehicle.
- the safety-relevant casting areas such as the horn or the rim base, have a maximum mechanical strength or hardness.
- the thicker and perpendicular to the rim hub or spoke area whose wall thickness is chosen to be much larger, may be less hard.
- the casting is mounted in a receptacle which has passages for entry of the gaseous quenching medium.
- a fan On the side facing away from the casting a fan is arranged, which sucks the quenching medium and presses in accordance with a predetermined flow rate through the passages in the recording.
- the fan is connected to a control circuit which adjusts the flow velocity of the quench medium depending on the ambient conditions.
- the flow rates can be adapted to the requirements of the quenching process.
- FIG. 1 is a front view of a wheel
- FIG. 2 shows a section through the wheel along the line II-II according to FIG. 1, which is used as a cast part in a superstructure. a device for deterring the casting is arranged and
- Figure 3 is a block diagram of a device for deterring the casting.
- the exemplary embodiment relates to the production of a wheel 1 according to FIG. 1.
- the wheel 1 is designed as a light metal wheel, preferably made of an aluminum alloy.
- the inventive method can also be used for the production of, for example, cylinder heads or crankcases.
- the light-alloy wheel 1 according to FIGS. 1 and 2 consists essentially of a rim 2, a hub region 3 and a plurality of spokes 4 extending radially from the hub region 3 to the outside.
- a die-cast part made of an aluminum alloy (aluminum-silicon-magnesium alloy, AlSiMg) is cast in a casting mold (not shown).
- the casting 1 is made by die casting. It can be made using a sand casting process in a sand mold or by a chill casting.
- the casting may be subjected to X-ray inspection to identify any unwanted holes.
- a solution annealing of the casting 1, in which the casting 1 is held for six hours to a temperature of about 535 ° C is carried out.
- the solution annealing may be carried out at a solution annealing temperature of between 500 ° C. depending on the shape of the casting 1 and 550 ° C.
- the solution annealing time may be in the range of four to eight hours.
- the quenching of the casting 1 by means of a gaseous quenching medium takes place.
- a gaseous quenching medium serves as a quenching medium, the room air, which is sucked by means of a blower 5 and passed at a predetermined flow rate in a receiving chamber 6, in which the casting 1 is arranged.
- the casting is positioned with a rear horn 7 of the rim 2 on a grid-shaped bottom 8.
- the bottom 8 has at a regular distance arranged passages 9 and slots through which the room air according to the direction of arrow 10 can flow into the receiving chamber 6.
- the flow rate of the room air can be in a range of 30 to 70 m / s.
- the casting 1 is cooled from 535 ° C to 150 ° C within a few minutes, for example within two to three minutes.
- the initial temperature of the casting 1 may be in a range of 490 ° C to 540 ° C.
- the wall thickness d x of the rim 2 is substantially smaller than the wall thickness d 2 of the hub portion 3 and the spokes 4.
- the casting 1 is due to its own weight on the grid-shaped bottom 8. Due to the arrangement of the rim 2, which extends substantially parallel to the air flow direction 10 and which is arranged on a side facing the passages 9 of the die-cast part 1, and the fact that the wall thickness d of the rim 2 substantially is less than the wall thickness d 2 of the remaining part of the die casting 1, a faster cooling of the rim portion 2 than that of the hub / spoke portion 3, 4. The temperature t x in the rim 2 during the Absehreckvorganges is less than the temperature t 2 in the hub / spoke area 3, 4.
- the rim 2 serves as a kind of cooling rib for the cooling of the hub / spoke area 3, 4 and thus favors a temperature compensation, wherein a sliding transition of the strength or hardness values of the rear horn 7 or from the rim base 2 in the direction of the hub portion 3 completes.
- the rim well may have a hardness value that is 10% to 20% higher than the hardness value in the region of the hub 3 of the casting 1. While a high strength value is formed in the region of the rim 2, the strength value in the region of the hub is 3 much lower, so that in an advantageous manner, the damping properties of the light metal wheel 1 when used for example in a motor vehicle can be significantly improved. Dynamic mechanical stresses can be much better absorbed without damaging the wheel 1 occurs.
- the casting 1 is subjected to a heat aging, which may have a duration of 30 minutes to 10 hours.
- the heat aging time for the described casting 1 may be 5 hours while maintaining the temperature in a range between 155 ° C and 200 ° C.
- the casting 1 is then fed to a machining operation.
- the fan 5 is associated with a control device ST, which adjusts the flow rate of the introduced through the fan 5 in the receiving chamber 6 room air flow or regulates.
- the control device ST has electronic control means, such that a fan of the blower 5, for example, at a room temperature of 20 ° C generates a flow velocity of 40 m / s.
- the control circuit 11 causes an increase in the rotational speed of the fan 5, so that, for example, a flow velocity of 50 m / s is achieved.
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)
Abstract
Description
Claims
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| PL04738672T PL1651788T5 (pl) | 2003-07-04 | 2004-06-16 | Sposób hartowania odlewu |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10330400A DE10330400A1 (de) | 2003-07-04 | 2003-07-04 | Verfahren und Vorrichtung zum Abschrecken eines Gussteils |
| PCT/DE2004/001220 WO2005007917A2 (de) | 2003-07-04 | 2004-06-16 | Verfahren und vorrichtung zum abschrecken eines gussteils |
Publications (4)
| Publication Number | Publication Date |
|---|---|
| EP1651788A2 true EP1651788A2 (de) | 2006-05-03 |
| EP1651788B1 EP1651788B1 (de) | 2008-05-14 |
| EP1651788B2 EP1651788B2 (de) | 2014-03-12 |
| EP1651788B9 EP1651788B9 (de) | 2014-06-11 |
Family
ID=33521369
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP04738672.7A Expired - Lifetime EP1651788B9 (de) | 2003-07-04 | 2004-06-16 | Verfahren zum Abschrecken eines Gussteils |
Country Status (5)
| Country | Link |
|---|---|
| EP (1) | EP1651788B9 (de) |
| AT (2) | ATE395443T1 (de) |
| DE (3) | DE10330400A1 (de) |
| PL (1) | PL1651788T5 (de) |
| WO (1) | WO2005007917A2 (de) |
Families Citing this family (6)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE102008024524A1 (de) * | 2008-05-21 | 2009-11-26 | Bdw Technologies Gmbh | Verfahren und Anlage zur Herstellung eines Gussbauteils |
| DE102011052514B4 (de) * | 2011-08-09 | 2018-04-19 | Ks Huayu Alutech Gmbh | Verfahren zur Vergütung eines durch Druckgießen hergestellten Zylinderkurbelgehäuses |
| US20140251508A1 (en) * | 2011-10-11 | 2014-09-11 | Ksm Castings Group Gmbh | Cast part |
| EP3725900A1 (de) | 2019-04-17 | 2020-10-21 | Mubea Performance Wheels GmbH | Bauteil und verfahren und vorrichtung zum abschrecken eines bauteils |
| DE102020100699A1 (de) * | 2020-01-14 | 2021-07-15 | Audi Aktiengesellschaft | Verfahren zum Herstellen einer Kraftwagenfelge aus Aluminium oder einer Aluminiumlegierung für ein Rad eines Kraftfahrzeugs sowie entsprechende Kraftwagenfelge |
| DE102020100693A1 (de) | 2020-01-14 | 2021-07-15 | Audi Aktiengesellschaft | Verfahren zum Herstellen einer Kraftwagenfelge aus Aluminium oder einer Aluminiumlegierung für ein Rad eines Kraftfahrzeugs sowie entsprechende Kraftwagenfelge |
Family Cites Families (21)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DD82952A (de) * | ||||
| US4629517A (en) * | 1982-12-27 | 1986-12-16 | Aluminum Company Of America | High strength and corrosion resistant aluminum article and method |
| DE3443226C1 (de) * | 1984-11-27 | 1986-03-13 | Årdal og Sunndal Verk A/S, Oslo | Verfahren und Vorrichtung zur Verbesserung der dynamischen Festigkeit von Radscheiben von Fahrzeugraedern aus aushaertbaren Aluminiumlegierungen |
| DE3724928A1 (de) * | 1987-07-28 | 1989-02-16 | Bayerische Motoren Werke Ag | Herstell-verfahren fuer leichtmetallguss-bauteile, insbesondere leichtmetallguss-raeder fuer personenkraftwagen |
| JPH0238545A (ja) * | 1988-07-27 | 1990-02-07 | Asahi Tec Corp | 車両用ホイールの熱処理法 |
| ES2158405T3 (es) * | 1989-03-07 | 2001-09-01 | Aluminum Co Of America | Maquina y metodo de colada en matriz bajo vacio. |
| EP0425461A1 (de) * | 1989-10-27 | 1991-05-02 | Sandvik Special Metals Corp. | Kontinuierliche Lösungswärmebehandlung von ausscheidungshärtbaren Legierungen |
| DE4305091C1 (de) * | 1993-02-19 | 1994-03-10 | Fuchs Otto Fa | Verfahren zur Herstellung eines einteiligen Leichtmetallrades aus einem Aluminium-Knetwerkstoff |
| JPH071111A (ja) * | 1993-06-16 | 1995-01-06 | Kosei Aruminiyuumu Kogyo Kk | アルミニウム合金製車輪の製造装置 |
| US5662750A (en) * | 1995-05-30 | 1997-09-02 | Kaiser Aluminum & Chemical Corporation | Method of manufacturing aluminum articles having improved bake hardenability |
| US5810949A (en) * | 1995-06-07 | 1998-09-22 | Aluminum Company Of America | Method for treating an aluminum alloy product to improve formability and surface finish characteristics |
| DE19524176C1 (de) * | 1995-07-03 | 1996-09-26 | Daimler Benz Ag | Verfahren zum Zwischenabschrecken von aus einem Lösungs-Glühofen kommenden Leichtmetall-Gußstücken |
| US6074599A (en) * | 1998-07-20 | 2000-06-13 | Ghafari Associates, Inc. | Air quenching chamber |
| EP1041165A1 (de) * | 1999-04-02 | 2000-10-04 | Kabushiki Kaisha Kobe Seiko Sho | Stossabsorbierendes Material |
| DE19925666C1 (de) † | 1999-06-04 | 2000-09-28 | Vaw Motor Gmbh | Zylinderkopf- und Motorblockgußteil |
| DE10043562C2 (de) * | 1999-09-16 | 2003-09-18 | Honsel Profilprodukte Gmbh | Verfahren zur Wärmebehandlung von Strangpreßprofilen |
| DE10002021C2 (de) * | 1999-09-24 | 2002-10-17 | Honsel Guss Gmbh | Verfahren zur Wärmebehandlung von Strukturgußteilen aus einer dafür zu verwendenden Aluminiumlegierung |
| US6752885B1 (en) * | 1999-09-24 | 2004-06-22 | Honsel Guss Gmbh | Method for the treatment of structure castings from an aluminum alloy to be used therefor |
| GB2361710A (en) * | 2000-02-11 | 2001-10-31 | Ford Global Tech Inc | Precipitation hardening of aluminium castings |
| DE10222098B4 (de) * | 2002-05-17 | 2011-01-13 | Bayerische Motoren Werke Aktiengesellschaft | Verfahren zur Wärmebehandlung von einem Bauteil aus einer härtbaren Leichtmetalllegierung |
| DE10235529A1 (de) * | 2002-08-03 | 2004-02-12 | Daimlerchrysler Ag | Gussteil |
-
2003
- 2003-07-04 DE DE10330400A patent/DE10330400A1/de not_active Withdrawn
- 2003-07-04 DE DE20320840U patent/DE20320840U1/de not_active Expired - Lifetime
-
2004
- 2004-06-16 AT AT04738672T patent/ATE395443T1/de active
- 2004-06-16 DE DE502004007161T patent/DE502004007161D1/de not_active Expired - Lifetime
- 2004-06-16 EP EP04738672.7A patent/EP1651788B9/de not_active Expired - Lifetime
- 2004-06-16 AT ATGM67/2011U patent/AT12609U1/de not_active IP Right Cessation
- 2004-06-16 WO PCT/DE2004/001220 patent/WO2005007917A2/de not_active Ceased
- 2004-06-16 PL PL04738672T patent/PL1651788T5/pl unknown
Non-Patent Citations (1)
| Title |
|---|
| See references of WO2005007917A3 * |
Also Published As
| Publication number | Publication date |
|---|---|
| DE10330400A1 (de) | 2005-01-20 |
| ATE395443T1 (de) | 2008-05-15 |
| DE20320840U1 (de) | 2005-03-31 |
| EP1651788B1 (de) | 2008-05-14 |
| EP1651788B2 (de) | 2014-03-12 |
| PL1651788T3 (pl) | 2008-10-31 |
| EP1651788B9 (de) | 2014-06-11 |
| PL1651788T5 (pl) | 2014-06-30 |
| AT12609U1 (de) | 2012-08-15 |
| DE502004007161D1 (de) | 2008-06-26 |
| WO2005007917A3 (de) | 2005-03-24 |
| WO2005007917A2 (de) | 2005-01-27 |
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