EP2741874B1 - Verfahren zur vergütung eines druckgussteils - Google Patents

Verfahren zur vergütung eines druckgussteils Download PDF

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Publication number
EP2741874B1
EP2741874B1 EP12740552.0A EP12740552A EP2741874B1 EP 2741874 B1 EP2741874 B1 EP 2741874B1 EP 12740552 A EP12740552 A EP 12740552A EP 2741874 B1 EP2741874 B1 EP 2741874B1
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EP
European Patent Office
Prior art keywords
casting
cylinder crankcase
die
hardening
spraying
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.)
Active
Application number
EP12740552.0A
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German (de)
English (en)
French (fr)
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EP2741874A1 (de
Inventor
Roland Reiter
Herbert MÖDING
Steffen Ziegler
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.)
KS Huayu Alutech GmbH
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KS Huayu Alutech GmbH
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Application filed by KS Huayu Alutech GmbH filed Critical KS Huayu Alutech GmbH
Priority to PL12740552T priority Critical patent/PL2741874T3/pl
Publication of EP2741874A1 publication Critical patent/EP2741874A1/de
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D17/00—Pressure die casting or injection die casting, i.e. casting in which the metal is forced into a mould under high pressure
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
    • B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D30/00—Cooling castings, not restricted to casting processes covered by a single main group

Definitions

  • the invention relates to a method for tempering a cylinder crankcase produced by die casting, wherein first the cylinder crankcase is cast in a mold with at least one fixed and one movable mold half, then the mold is opened by extending the movable mold half, then the cylinder crankcase in the movable mold half is quenched in the following, the cylinder crankcase is ejected from the movable mold half and finally the cylinder crankcase is outsourced warm.
  • the disadvantage is that the injected coolant must be distributed over the surface of the casting, so that temperature gradient occur over the casting. Accordingly, a particularly good cooling in the edge region of the gap, at the Eindüsposition. Furthermore, a bad cooling effect can be caused by the Leidenfrost' Basic effect.
  • a similar method discloses the DE 10 2006 057 660 A1 .
  • a method for die casting in particular of thin-walled components is known in which the component immediately after solidification quenched in the die.
  • water can be applied to the casting via a spraying device, as used to cool a casting mold.
  • the problem is that with thick-walled components no sufficient cooling effect due to the Leidenfrost' Permanent effect is achieved.
  • a metered cooling of the diecasting can be performed, which can be optimized both in terms of position and the introduced amounts of coolant. So optimal microstructural qualities can be achieved.
  • the coolant is accelerated so that the Leidenfrost'sehe effect is reliably penetrate even with hot die castings.
  • the solid mold half can be sprayed simultaneously with the spraying of the cylinder crankcase in the movable mold half, so that it is cooled in one process step.
  • the spray medium is a coolant-air mixture, wherein the ratio between air and coolant is controlled.
  • the ratio between air and coolant is controlled.
  • the spraying tools of the spraying device are extended from the intermediate space between the mold halves before ejection of the cylinder crankcase and retracted after ejection of the cylinder crankcase for cooling the mold.
  • the spraying device is attached to an ejector, so that the spraying device is extended only when ejecting from the space between the mold halves. So can be dispensed with an additional arm on the robot. Furthermore, the cycle time is shortened, as can be dispensed with an extension and retraction.
  • a particularly high level of strength can be achieved if the thermal aging is carried out at a temperature of 140-250 ° C., since oversaturated in the aluminum crystal dissolved gases, in contrast to the T6 heat treatment, are not eliminated at these temperatures, and thus does not increase the degree of porosity ,
  • a cylinder crankcase can be produced correspondingly, which has different optimum structural properties in the different areas without incurring additional costs.
  • the stress critical zones of the cylinder tubes and bushings are covered by the mold half, so that the bearing blocks are selectively sprayed without affecting the cylinder areas to a greater extent, in which a higher hardness is often not desired.
  • a mold 2 for performing a die-casting process which has a fixed mold half 4 and a movable mold half 6.
  • a spraying device 8 is arranged, which, like the casting mold 2, is connected to a control device 10.
  • the spray device 8 usually consists at least of a coolant inlet and a coolant tank, wherein the coolant is conveyed via a frequency-controlled fluid pressure pump to a spray device 12, wherein the pressure of the coolant is increased to 25 bar.
  • the pressure-resistant spray device 12 has a plurality of spray tools 14, of which at least one for the spraying of the fixed mold half 4 and one for the spraying of the movable mold half 6 or arranged in the movable mold half 6 die casting 16 are aligned.
  • the movement of the spray device 12 and the spray tools 14 can be done computer controlled by the controller 10.
  • the spray tools 14 have a compressed air connection and a connection for the coolant and are also designed for the high fluid pressures. In the spray tool 14, the compressed air and the coolant are mixed. This mixture creates a uniform atomization of the coolant. For this purpose, a sufficient flow velocity of the compressed air in the mixing chamber of the spray tool 14 is required, which is ensured by a correspondingly regulated air pump 18 for the compressed air.
  • the diecast part 16 is a cylinder crankcase having a bearing seat portion 20 and a cylinder portion 22.
  • the mold 2 After casting the die-cast part 16 opens, as in FIG. 2 is shown, the mold 2 so the movable mold half 6 is moved away with the therein diecasting 16 from the fixed mold half 4, so that a space is formed in the about simultaneously with the opening of the mold 2, the spray tools 14 of the sprayer 12 are retracted.
  • the spraying tools 14 subsequently spray on one side the fixed mold half 2, which is thus cooled, but on the opposite side the die casting 16 and here due to its position in the mold, especially the thick-walled portion of the bearing block 20, while the stress-critical zones of Cylinder tubes 22 and - remain bushes covered by the movable mold half 6 and the sleeves.
  • This effect is particularly high at high temperature gradients, ie high outlet temperatures and low coolant temperatures at the diecasting part, so that the opening of the casting mold 2 is opened as soon as possible after the diecasting part 16 has solidified and the coolant should act as directly as possible on the diecasting part.
  • the coolant is applied at a pressure of 25 bar, whereby on the hot mold wall, although a vapor cushion is formed by the evaporation, however, this is not able to keep the other spray according to the Leidenfrost' Permanent effect from the surface, since the spray jet breaks through the steam cushion due to its high kinetic energy. Thus, however, the coolant passes directly to the surface of the die casting 16. This avoids the elimination of equilibrium phases.
  • the die casting 16 is ejected after the spraying tools 14 have been extended out of the space between the mold halves. After removal, the spray tools for further cooling of the fixed mold half 4 and the movable mold half 6 can be retracted again.
  • the die-cast part is subsequently warm-laid at a temperature of about 150 ° C. In this way, tensile strengths of 300 MPa can be achieved without having to carry out a subsequent homogenization annealing. Elements dissolved in the aluminum crystal are not precipitated and are accordingly available during the curing process.
  • cylinder crankcases can be produced which have a markedly increased strength level in the highly loaded bearing block area, without changing the structures in the stress-critical areas of the cylinder tubes. Accordingly, costs can be significantly reduced compared to the otherwise required T6 heat treatment. In this case, particularly good results in terms of the structure are achieved at high temperature gradients between die casting and coolant.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Molds, Cores, And Manufacturing Methods Thereof (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Moulds For Moulding Plastics Or The Like (AREA)
  • Application Of Or Painting With Fluid Materials (AREA)
  • Casting Or Compression Moulding Of Plastics Or The Like (AREA)
  • Injection Moulding Of Plastics Or The Like (AREA)
EP12740552.0A 2011-08-09 2012-07-19 Verfahren zur vergütung eines druckgussteils Active EP2741874B1 (de)

Priority Applications (1)

Application Number Priority Date Filing Date Title
PL12740552T PL2741874T3 (pl) 2011-08-09 2012-07-19 Sposób cieplnego ulepszania odlewu ciśnieniowego

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102011052514.9A DE102011052514B4 (de) 2011-08-09 2011-08-09 Verfahren zur Vergütung eines durch Druckgießen hergestellten Zylinderkurbelgehäuses
PCT/EP2012/064178 WO2013020786A1 (de) 2011-08-09 2012-07-19 Verfahren zur vergütung eines druckgussteils

Publications (2)

Publication Number Publication Date
EP2741874A1 EP2741874A1 (de) 2014-06-18
EP2741874B1 true EP2741874B1 (de) 2019-03-06

Family

ID=46583997

Family Applications (1)

Application Number Title Priority Date Filing Date
EP12740552.0A Active EP2741874B1 (de) 2011-08-09 2012-07-19 Verfahren zur vergütung eines druckgussteils

Country Status (8)

Country Link
EP (1) EP2741874B1 (pl)
CN (1) CN103717328A (pl)
DE (1) DE102011052514B4 (pl)
ES (1) ES2728133T3 (pl)
HU (1) HUE045223T2 (pl)
PL (1) PL2741874T3 (pl)
RU (1) RU2571978C2 (pl)
WO (1) WO2013020786A1 (pl)

Families Citing this family (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN105397055A (zh) * 2015-12-15 2016-03-16 重庆纽思塔科技有限公司 模具喷涂系统
DE102017007085A1 (de) 2017-07-27 2018-10-04 Daimler Ag Verfahren zur Kühlung eines Gussteils
CN112404392A (zh) * 2020-09-11 2021-02-26 蚌埠隆华压铸机有限公司 一种多功能挤压锻造可调节压铸机

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1148928A (en) 1966-11-03 1969-04-16 Olin Mathieson Process for cooling a copper, aluminum, aluminum base alloy or copper base alloy article
DE19901508A1 (de) 1999-01-16 2000-08-17 Bayerische Motoren Werke Ag Verfahren zur Herstellung von Gußteilen aus Aluminiumlegierungen
DE102005039049A1 (de) 2005-08-18 2007-02-22 Ks Aluminium-Technologie Ag Verfahren zur Herstellung eines Gussteils und Zylinderkurbelgehäuse
DE102006057660A1 (de) 2006-12-07 2008-06-12 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zum Druckgießen von Bauteilen
DE102009010361B3 (de) 2009-02-25 2010-10-28 Ks Aluminium-Technologie Gmbh Verfahren und Sprühvorrichtung zum Aufbringen eines Oberflächenbehandlungsmittels auf eine Formwand einer Gussform

Family Cites Families (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2318199C2 (de) * 1973-04-11 1974-11-14 Mahle Gmbh, 7000 Stuttgart Verfahren zur Wärmebehandlung von Gußteilen aus einer Magnesium-Aluminium-Zink-Legierung
DE3325198C2 (de) * 1983-07-13 1998-10-29 Schloemann Siemag Ag Verfahren und Anordnung zum Reinigen von kaltgewalzten Metallbändern
DE8810085U1 (de) * 1988-08-08 1988-10-20 Elhaus, Friedrich Wilhelm, Dipl.-Ing., 7703 Rielasingen-Worblingen Sprühwasser-Abschreckvorrichtung für Strangpreßprofile
JPH105966A (ja) * 1996-06-28 1998-01-13 Topy Ind Ltd 軽合金ホイールの冷却鋳造法および鋳造装置
WO1999047295A1 (de) * 1998-03-13 1999-09-23 Wotec Automationssysteme Gmbh Sprühvorrichtung für giessformen
DE19952116B4 (de) * 1999-10-29 2006-09-28 Audi Ag Verwendung eines Metall-Druckgussstückes, hergestellt durch Vakuumgießen
RU2176174C1 (ru) * 2000-04-28 2001-11-27 Открытое акционерное общество "Ковровский электромеханический завод" Способ литья с кристаллизацией под давлением
DE10309930A1 (de) * 2003-03-07 2004-09-23 Daimlerchrysler Ag Verfahren zur Konfigurierung eines an eine Gießform angepaßten Sprühsystems zur Kühlung der Gießform
DE20320840U1 (de) * 2003-07-04 2005-03-31 Alutec Belte Ag Vorrichtung zum Abschrecken und Wärmebehandeln eines Gussteils
DE102004014827B3 (de) * 2004-03-24 2005-06-30 Hydro Aluminium Deutschland Gmbh Verfahren zum Wärmebehandeln von aus einer Leichtmetallschmelze, insbesondere einer Aluminiumschmelze, erzeugten Gussteilen
DE102007041445B4 (de) 2007-08-31 2014-03-27 Bühler Druckguss AG Verfahren zur Kühlung von Gussteilen
DE102007048419B3 (de) * 2007-10-09 2009-06-18 Albert Handtmann Metallgusswerk Gmbh & Co. Kg Verfahren zur beschleunigten Abkühlung von Gußstücken
RU2404017C2 (ru) * 2008-06-16 2010-11-20 Кожокин Тимофей Иванович Способ литья с кристаллизацией под давлением (лкпд)
DE102009033387B4 (de) * 2009-07-16 2012-12-06 Sms Meer Gmbh Verfahren und Vorrichtung zum Gießen von Formteilen, insbesondere von Nicht-Eisen-Anoden
DE102010009118B4 (de) * 2009-10-19 2017-04-20 Audi Ag Verfahren zur Wärmebehandlung von Gussteilen

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1148928A (en) 1966-11-03 1969-04-16 Olin Mathieson Process for cooling a copper, aluminum, aluminum base alloy or copper base alloy article
DE19901508A1 (de) 1999-01-16 2000-08-17 Bayerische Motoren Werke Ag Verfahren zur Herstellung von Gußteilen aus Aluminiumlegierungen
DE102005039049A1 (de) 2005-08-18 2007-02-22 Ks Aluminium-Technologie Ag Verfahren zur Herstellung eines Gussteils und Zylinderkurbelgehäuse
DE102006057660A1 (de) 2006-12-07 2008-06-12 Bayerische Motoren Werke Ag Verfahren und Vorrichtung zum Druckgießen von Bauteilen
DE102009010361B3 (de) 2009-02-25 2010-10-28 Ks Aluminium-Technologie Gmbh Verfahren und Sprühvorrichtung zum Aufbringen eines Oberflächenbehandlungsmittels auf eine Formwand einer Gussform

Also Published As

Publication number Publication date
DE102011052514B4 (de) 2018-04-19
HUE045223T2 (hu) 2019-12-30
PL2741874T3 (pl) 2019-10-31
DE102011052514A1 (de) 2013-02-14
WO2013020786A1 (de) 2013-02-14
RU2571978C2 (ru) 2015-12-27
EP2741874A1 (de) 2014-06-18
RU2014109026A (ru) 2015-09-20
ES2728133T3 (es) 2019-10-22
CN103717328A (zh) 2014-04-09

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