EP0752479A1 - Procédé de trempe interrompue de pièces coulées en alliage léger émanant d'un four de traitement de mise en solution - Google Patents

Procédé de trempe interrompue de pièces coulées en alliage léger émanant d'un four de traitement de mise en solution Download PDF

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Publication number
EP0752479A1
EP0752479A1 EP96107837A EP96107837A EP0752479A1 EP 0752479 A1 EP0752479 A1 EP 0752479A1 EP 96107837 A EP96107837 A EP 96107837A EP 96107837 A EP96107837 A EP 96107837A EP 0752479 A1 EP0752479 A1 EP 0752479A1
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EP
European Patent Office
Prior art keywords
water
castings
air
quenching
heat
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
Application number
EP96107837A
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German (de)
English (en)
Other versions
EP0752479B1 (fr
Inventor
Ralph Koppenhöfer
Siegfried Weimer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Daimler Benz AG
Original Assignee
Daimler Benz AG
Mercedes Benz AG
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Publication date
Application filed by Daimler Benz AG, Mercedes Benz AG filed Critical Daimler Benz AG
Publication of EP0752479A1 publication Critical patent/EP0752479A1/fr
Application granted granted Critical
Publication of EP0752479B1 publication Critical patent/EP0752479B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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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
    • 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
    • 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

Definitions

  • the invention is based on a method for the heat treatment of light metal castings according to the preamble of claim 1, as is common in industrial practice.
  • the resulting vapor layer is constantly renewed by newly entering water, whereas in areas with virtually stagnant water, a more or less stable vapor barrier can form between the workpiece surface and the water bath, which can be swift Prevents heat flow from the workpiece into the water bath.
  • water heating is limited; the bath temperature is stabilized - usually by adding fresh water - at around 30 to 70 ° C.
  • the castings are quenched to a bath temperature, that is to say up to about 30 to 70.degree. C., due to a sufficiently long time in the quenching bath, in order to ensure that sufficient quenching has been achieved even in the most unfavorable places.
  • the castings After quenching, the castings have to be heated up again to the aging temperature in an energy-intensive manner for the subsequent aging.
  • sand residues remain for the most part at least in the cavities of the workpiece;
  • Such wet sand nests must first be separated after water quenching and dried in a complex and energy-intensive manner before the sand can be removed by shaking and / or blowing and before the castings can be put into the aging oven.
  • the object of the invention is to optimize the generic heat treatment process of the light metal castings with regard to the result of the heat treatment and the operating costs.
  • Japanese patent application JP 60-170567 A shows a method or an arrangement for cooling freshly cast light alloy rims, some of which are still in the casting mold, in which the hub and wheel disc area out of the casting heat with a water mist that is arranged in a targeted manner Nozzle is fed, is carefully cooled.
  • DE 15 58 798 B2 light metal workpieces are to be cooled from a temperature above 371 ° C. with a cooling rate of more than 83 ° C./s by using fine water jets at a pressure of 10 to 42 bar and be sprayed at high speed.
  • the heat treatment system shown in Figure 1 for light metal castings preferably cylinder heads for reciprocating engines, consists of a solution annealing furnace 2, a subsequent quenching device 3 and a subsequent aging furnace 4 in the transport direction.
  • the light metal castings are after solidification, shaping and Coring entered in the solution annealing furnace, which can be designed for example as a piercing furnace. There the parts are heated to about 530 ° C and annealed at this temperature for a certain time, for example four hours.
  • the solution annealing furnace can expediently be designed in the form of a combined treatment furnace according to EP 546 210 A1 cited at the beginning, in which the workpieces can not only be solution-annealed, but also in which the sand cores are pyrolytically destroyed and the core composite completely in pourable Sand is dissolved.
  • the castings therefore do not need to be cooled and gutted beforehand; rather, the residual casting heat can be used for heating to the annealing temperature, which not only saves heating time, but also heating energy.
  • the castings come out of the furnace after annealing and have already largely been sanded out.
  • the parts After the annealing, the parts must be quenched, for which purpose the quenching device 3 is provided, which is shown enlarged in FIGS. 2 and 3 and which will be discussed in more detail below.
  • the quenching device 3 is provided, which is shown enlarged in FIGS. 2 and 3 and which will be discussed in more detail below.
  • the castings 1 are quenched individually by means of a mist-fine mixture of air and water, a careful quenching taking place which can be driven up to a certain temperature depending on the period of time. It is therefore in your hand to quench the castings to only around 130 to 160 ° C. As a result, the residual heat of the castings can be used, so that the parts can then be fed into the aging furnace 4 while still warm.
  • the parts are stored at around 170 to 210 ° C for a certain period of time, for example around four hours.
  • the castings can then be cooled to room temperature in the open air.
  • the parts basically remain dry when quenched and that in particular the sand falling off the castings is also dry. Insofar as core sand does not remain in the cavities of the castings, but instead trickles out of the castings, it collects below in the furnaces and has to be removed there from time to time.
  • the quenching device 3 shown in more detail in FIGS. 2 and 3 is constructed as follows: A treatment space 11, which is enclosed by metal sheets, is created, into which a roller conveyor 12 leads, which carries and conveys the castings.
  • the rollers can be driven by a roller drive 22.
  • a lifting door 13 is attached to the front and rear of the treatment room, which can be opened and closed automatically and program-controlled by a lifting drive, which is no longer shown.
  • cleaning covers 21 are attached to the side of the treatment room.
  • the floor is provided with a drain line 24 through which scraped-up sand can be let out.
  • An air supply blower 14 is attached to the top of the treatment room 11, via which air can be drawn in at room temperature and blown into the treatment room at a high circulation speed.
  • Air baffles 15 are installed inside the treatment room for air guidance.
  • an upper level of spray nozzles 19 is attached, which are connected to a ring line 16 and are supplied with water from there. This water is very finely dusted through the nozzles and passed into the air flowing past.
  • a lower level of spray nozzles is located a short distance above the castings.
  • two longitudinal lines 17 and a plurality of transverse lines 18, which connect the longitudinal lines transversely to one another in a ladder-like manner, are provided on the side, which in turn carry the spray nozzles 19 which are arranged distributed over the entire area. These spray the supplied water directly onto the castings 1.
  • the castings are sprayed individually and locally from all sides with finely sprayed water, ie with a mixture of air and water.
  • the water is suspended in the air in the form of almost foggy droplets.
  • the water is evaporated and the heat of vaporization is used as latent cooling heat.
  • This type of cooling a careful but still sufficient rapid deterrence achieved.
  • the quenching effect is very uniform locally and, as said, can be driven to very specific temperatures of the workpieces, so that residual heat can be left over and used for the subsequent outsourcing.
  • About 1500 to 5000 m 3 / h, preferably about 4000 m 3 / h of air are conveyed into the treatment room 11 via the air supply 5 and the air supply blower 14 and about 0.25 to 1 liter, preferably 0.5 liters of water per kg of casting material about 12 to 24 bar injected into the supplied air. This enables a cooling rate of around 280 to 320 ° C per minute to be achieved.
  • the method is intended in particular for quenching cylinder heads for reciprocating engines.
  • the air blown into the treatment room, together with the steam produced, must also be removed quickly from this treatment room.
  • several steam extraction lines 6 with steam extraction fans 20 are attached to the side and in the roof area of the treatment room.
  • the air baffles 15 already mentioned are attached between the two.
  • the water vapor that is produced and carried away by the castings 1 is passed into a condenser 7 and the condensed water and the condensed water collected there are returned to the condensate pump 8 for moistening the air / water mixture.
  • the condenser 7 is supplied with condensation energy via cold air from the cooling air line 10.
  • the air heated in the condenser is also blown outside. Due to the recondensation of the quenching water, approximately 75 to 95%, preferably approximately 90%, of the water can be rewoven. The remaining water is carried outside with the air via the air discharge line 9.

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatments In General, Especially Conveying And Cooling (AREA)
  • Heat Treatment Of Articles (AREA)
  • Pens And Brushes (AREA)
EP96107837A 1995-07-03 1996-05-17 Procédé de trempe interrompue de pièces coulées en alliage léger émanant d'un four de traitement de mise en solution Expired - Lifetime EP0752479B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19524176A DE19524176C1 (de) 1995-07-03 1995-07-03 Verfahren zum Zwischenabschrecken von aus einem Lösungs-Glühofen kommenden Leichtmetall-Gußstücken
DE19524176 1995-07-03

Publications (2)

Publication Number Publication Date
EP0752479A1 true EP0752479A1 (fr) 1997-01-08
EP0752479B1 EP0752479B1 (fr) 2001-07-04

Family

ID=7765876

Family Applications (1)

Application Number Title Priority Date Filing Date
EP96107837A Expired - Lifetime EP0752479B1 (fr) 1995-07-03 1996-05-17 Procédé de trempe interrompue de pièces coulées en alliage léger émanant d'un four de traitement de mise en solution

Country Status (5)

Country Link
US (1) US5788784A (fr)
EP (1) EP0752479B1 (fr)
DE (1) DE19524176C1 (fr)
ES (1) ES2161316T3 (fr)
HU (1) HU218799B (fr)

Families Citing this family (32)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6224693B1 (en) 1999-12-10 2001-05-01 Tenedora Nemak, S.A. De C.V. Method and apparatus for simplified production of heat treatable aluminum alloy castings with artificial self-aging
DE10016187C2 (de) * 2000-03-31 2002-05-08 Daimler Chrysler Ag Verfahren und Vorrichtung zur Wärmebehandlung von Gußteilen aus Aluminium,insbesondere von Zylinderköpfen
EP1530651B1 (fr) * 2000-12-14 2010-11-24 Tenedora Nemak, S.A. de C.V. Procede et appareil de fabrication simplifiee de pieces moulees en alliage d'aluminium aptes au traitement thermique a autovieillissement artificiel
DE10141510A1 (de) * 2001-08-24 2003-03-13 Audi Ag Verfahren zum Herstellen von Leichtmetall-Felgen
DE10330400A1 (de) * 2003-07-04 2005-01-20 Alutec-Belte Ag Verfahren und Vorrichtung zum Abschrecken eines Gussteils
EP1582600A1 (fr) * 2004-03-29 2005-10-05 Fata Aluminium S.p.A. Procédé et dispositif pour refroidir les pièces coulées
US20060054294A1 (en) * 2004-09-15 2006-03-16 Crafton Scott P Short cycle casting processing
CN101460473A (zh) 2006-04-03 2009-06-17 药物热化学品公司 热提取方法和产物
DE102006049869A1 (de) * 2006-10-23 2008-04-24 Bdw Technologies Gmbh & Co. Kg Verfahren und Anlage zur Herstellung eines Gussbauteils
US7905990B2 (en) 2007-11-20 2011-03-15 Ensyn Renewables, Inc. Rapid thermal conversion of biomass
US20110284359A1 (en) 2010-05-20 2011-11-24 Uop Llc Processes for controlling afterburn in a reheater and for controlling loss of entrained solid particles in combustion product flue gas
US8499702B2 (en) 2010-07-15 2013-08-06 Ensyn Renewables, Inc. Char-handling processes in a pyrolysis system
US9441887B2 (en) 2011-02-22 2016-09-13 Ensyn Renewables, Inc. Heat removal and recovery in biomass pyrolysis
US9347005B2 (en) 2011-09-13 2016-05-24 Ensyn Renewables, Inc. Methods and apparatuses for rapid thermal processing of carbonaceous material
US9044727B2 (en) 2011-09-22 2015-06-02 Ensyn Renewables, Inc. Apparatuses and methods for controlling heat for rapid thermal processing of carbonaceous material
US10400175B2 (en) 2011-09-22 2019-09-03 Ensyn Renewables, Inc. Apparatuses and methods for controlling heat for rapid thermal processing of carbonaceous material
US10041667B2 (en) 2011-09-22 2018-08-07 Ensyn Renewables, Inc. Apparatuses for controlling heat for rapid thermal processing of carbonaceous material and methods for the same
US9109177B2 (en) 2011-12-12 2015-08-18 Ensyn Renewables, Inc. Systems and methods for renewable fuel
US9670413B2 (en) 2012-06-28 2017-06-06 Ensyn Renewables, Inc. Methods and apparatuses for thermally converting biomass
TWI645026B (zh) 2013-06-26 2018-12-21 安信再生公司 可再生燃料之系統及方法
DE102014108471A1 (de) * 2014-06-17 2015-12-17 Brp-Engineering Gmbh Verfahren und Vorrichtung zum Abschrecken von Werkstücken
EP3194630A4 (fr) 2014-09-18 2018-03-14 Consolidated Engineering Company, Inc. Système et procédé pour la trempe de pièces coulées
MX2017015935A (es) 2015-06-12 2018-08-15 Consolidated Eng Company Inc Sistema y metodo para mejorar el flujo de aire de enfriamiento.
CA2995845A1 (fr) 2015-08-21 2017-03-02 Ensyn Renewables, Inc. Systeme de chauffage a biomasse liquide
DE102015013169B3 (de) * 2015-10-09 2017-01-26 Audi Ag Verfahren zur Wärmebehandlung eines Leichtmetall- Bauteils
DE102016007450B4 (de) 2016-06-17 2021-07-01 Audi Ag Verfahren zur Temperierung eines Gussteils
CA3048681A1 (fr) 2016-12-29 2018-07-05 Ensyn Renewables, Inc. Demetallisation de biomasse liquide
CN108044074A (zh) * 2017-10-27 2018-05-18 上海理工大学 铝合金压铸件多介质风冷装置
CN110064745A (zh) * 2019-04-03 2019-07-30 夏成雷 一种铸造件隔离冷却装置
DE102019205724A1 (de) * 2019-04-18 2020-10-22 Sms Group Gmbh Kühlvorrichtung für nahtlose Stahlrohre
DE102020129435A1 (de) 2020-11-09 2022-05-12 Audi Aktiengesellschaft Vorrichtung zum Abschrecken von Metallbauteilen
CN113547107A (zh) * 2021-07-29 2021-10-26 温州市开诚机械有限公司 一种汽轮机铸钢件生产用冷却装置

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558798A1 (de) * 1967-04-24 1970-04-23 Olin Mathieson Kuehlerverfahren fuer Metalle
FR2223463A1 (fr) * 1973-03-26 1974-10-25 Nat Southwire Aluminum
EP0051549A1 (fr) * 1980-11-05 1982-05-12 Cegedur Societe De Transformation De L'aluminium Pechiney Méthode de trempe interrompue des alliages à base d'aluminium
US4373706A (en) * 1972-11-21 1983-02-15 Friedrich Wilhelm Elhaus Apparatus for heat treatment of material to be worked on, especially of aluminum or magnesium alloys
JPH01287256A (ja) * 1988-05-12 1989-11-17 Mitsubishi Heavy Ind Ltd 高力アルミニウム合金の焼入れ法
EP0546210A1 (fr) * 1991-05-24 1993-06-16 Consolidated Engineering Company, Inc. Procédé et dispositif pour le traitement thermique de pièces coulées

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3997376A (en) * 1974-06-19 1976-12-14 Midland-Ross Corporation Spray mist cooling method
JPS60170567A (ja) * 1984-02-13 1985-09-04 Topy Ind Ltd アルミホイールの水ミスト冷却鋳造法
FR2634866B1 (fr) * 1988-07-26 1990-10-19 Thierry Dimier Traitements The Procede et dispositif pour la recuperation d'un fluide en vue de sa reutilisation
US5350160A (en) * 1989-09-29 1994-09-27 Consolidated Engineering Company Method and apparatus for heat treating metal castings
US5354038A (en) * 1989-09-29 1994-10-11 Consolidated Engineering Company, Inc. Heat treatment of metal castings and in-furnace sand reclamation
US5294094A (en) * 1989-09-29 1994-03-15 Consolidated Engineering Company Method and apparatus for heat treating metal castings
ZA908728B (en) * 1989-11-23 1991-08-28 Alusuisse Lonza Services Ag Cooling of cast billets
KR950700435A (ko) * 1992-02-27 1995-01-16 다니엘 엠. 샌드버그 주조 알루미늄 차량 휠 제조 방법(Method for producing a cast aluminum vehicle wheel)

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1558798A1 (de) * 1967-04-24 1970-04-23 Olin Mathieson Kuehlerverfahren fuer Metalle
US4373706A (en) * 1972-11-21 1983-02-15 Friedrich Wilhelm Elhaus Apparatus for heat treatment of material to be worked on, especially of aluminum or magnesium alloys
FR2223463A1 (fr) * 1973-03-26 1974-10-25 Nat Southwire Aluminum
EP0051549A1 (fr) * 1980-11-05 1982-05-12 Cegedur Societe De Transformation De L'aluminium Pechiney Méthode de trempe interrompue des alliages à base d'aluminium
JPH01287256A (ja) * 1988-05-12 1989-11-17 Mitsubishi Heavy Ind Ltd 高力アルミニウム合金の焼入れ法
EP0546210A1 (fr) * 1991-05-24 1993-06-16 Consolidated Engineering Company, Inc. Procédé et dispositif pour le traitement thermique de pièces coulées

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
METADEX 93(9):56-1292, F.MOREAUX ET AL "SOME DEVELOPMENTS ABOUT SPRAY QUENCHING", MATERIALS AUSTRALIA, MAR 1992, 24, (2), 14-16 *
PATENT ABSTRACTS OF JAPAN vol. 014, no. 063 (C - 0685) 6 February 1990 (1990-02-06) *

Also Published As

Publication number Publication date
DE19524176C1 (de) 1996-09-26
HUP9601488A3 (en) 1999-03-01
HUP9601488A2 (en) 1997-03-28
HU9601488D0 (en) 1996-07-29
HU218799B (hu) 2000-12-28
ES2161316T3 (es) 2001-12-01
EP0752479B1 (fr) 2001-07-04
US5788784A (en) 1998-08-04

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