EP1433552A1 - Pièce moulée composite en métal léger et son procédé de fabrication - Google Patents

Pièce moulée composite en métal léger et son procédé de fabrication Download PDF

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Publication number
EP1433552A1
EP1433552A1 EP03025165A EP03025165A EP1433552A1 EP 1433552 A1 EP1433552 A1 EP 1433552A1 EP 03025165 A EP03025165 A EP 03025165A EP 03025165 A EP03025165 A EP 03025165A EP 1433552 A1 EP1433552 A1 EP 1433552A1
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EP
European Patent Office
Prior art keywords
light metal
alloy
casting
intermediate layer
coating
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
EP03025165A
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German (de)
English (en)
Other versions
EP1433552B1 (fr
Inventor
Johann Wolf
Andreas Dr. Fent
Frank Dr. Doernenburg
Wolfram Wagener
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.)
Bayerische Motoren Werke AG
Original Assignee
Bayerische Motoren Werke AG
Priority date (The priority date 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 date listed.)
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Publication date
Application filed by Bayerische Motoren Werke AG filed Critical Bayerische Motoren Werke AG
Publication of EP1433552A1 publication Critical patent/EP1433552A1/fr
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Publication of EP1433552B1 publication Critical patent/EP1433552B1/fr
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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
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/0081—Casting in, on, or around objects which form part of the product pretreatment of the insert, e.g. for enhancing the bonding between insert and surrounding cast metal

Definitions

  • the invention relates to a Process for producing a light metal composite casting. Further The invention relates to a light metal composite casting according to the Preamble of claim 8.
  • DE 101 03 596 A1 describes the production of a Crankcase of an internal combustion engine, in which Cylinder liners made of a gray cast iron material with a Light metal material are cast around. The is of particular importance Attributed contact layer between the composite materials, which not only through a positive connection, but also through one metallic material composite is marked.
  • connection layer that consists of a combination of the two materials.
  • connection layer which contains a high proportion of brittle magnesium phases, for example, Al12Mg17; effect these phases disadvantageously a low mechanical strength of the Link layer.
  • the invention has for its object a method for manufacturing to provide a light metal composite casting mentioned at the beginning, which advantageously connects an output part, which is essentially formed from a first light metal alloy, made possible by casting with a second light metal alloy.
  • a light metal composite casting should include a first one Light metal alloy, especially an aluminum alloy, and one with this connected second light metal alloy, in particular one Magnesium alloy, which is provided in the connection area such an intermediate layer between the light metal alloys having.
  • the task is according to solved the features of claim 8, wherein a ductile, plastic deformable intermediate layer between the first and second Light metal alloy is formed.
  • the second Alloy is a magnesium alloy and the coating is one Aluminum-silicon alloy.
  • the Aluminum alloy preferably with the alloy AlSi17Cu4Mg the designation A390 and for the magnesium alloy around the alloy MgAl6Sr2 with the designation AJ62 or at least in each case relevant properties similar alloys.
  • the coating by means of a Flame spraying process, in particular by flame spraying with powder or Wire, arc spraying with powder or wire or plasma spraying, is applied.
  • the coating expediently has a thickness from approximately 10 to 500 ⁇ m, in particular from approximately 100 to 140 ⁇ m.
  • An at least externally porous structure of the Coating proven that compresses during the casting process and with which the second light metal alloy forms an intermediate layer between the first and second light metal alloy combines.
  • the method according to the invention is the second light metal alloy a temperature of about 600 to 800 ° C, especially at about 680 ° C to 720 ° C and under a pressure of approx. 500 to 1200 bar, in particular approx. 850 to 900 bar, in the casting process with the first light metal alloy connected.
  • the light metal composite casting according to the invention is the intermediate layer through an alloy with the elements aluminum (Al), magnesium (Mg), Silicon (Si), copper (Cu) and strontium (Sr) formed.
  • the intermediate layer of the light metal composite casting advantageously has a thickness of approximately 5 to 350 ⁇ m, in particular approximately 70 to 120 ⁇ m, a hardness of at most 400 HV, in particular approximately 250 to 350 HV, and a ductility of at least 0.05 %, in particular of at least 0.1%, a tensile strength R m of at least 10 MPa, in particular of at least 20 Mpa, and an elastic limit R p0.2 of at least 5 MPa, in particular of at least 10 MPa.
  • an output part is made from a Aluminum alloy like AlSi17Cu4Mg with the designation A390 produced by die casting.
  • This output part which can also be multi-part and optionally on the outside with a waffle-like one, for example Structured pattern is provided in a subsequent operation surface-treated.
  • the method uses mechanical blasting with a Abrasive like corundum. Alternatively or additionally you can however also other or further, for example also chemical Surface treatments are carried out.
  • the output part is replaced with a Provide coating, in the present case an alloy of type AlSi12 for Applies and by means of a flame spraying process, in particular by flame spraying with powder or wire, light spraying with powder or wire or plasma spraying.
  • a flame spraying process in particular by flame spraying with powder or wire, light spraying with powder or wire or plasma spraying.
  • one Al99.5 (pure aluminum) coating can be applied.
  • the Coating is present on all sides, enclosing the starting part . applied, but possibly also only partially Coating of the output part can be done.
  • the coating with the starting part is primarily mechanical due to Connected in the micro range and points at least on the outside a porous structure; the coating has a thickness of approximately 10 to 500 microns, in particular from about 100 to 140 microns.
  • the coated output part is used to avoid cracks and around better connection of the magnesium casting to be applied subsequently ensure to a temperature of about 400 to 550 ° C, especially at approx. 480 ° C, preheated.
  • the coated output part is connected in one Casting tool in which the starting part is inserted, with between Tool and starting part are formed in one or more mold spaces which a molten cast material is introduced.
  • the initial part can be in places on the tool wall and / or medium-resolvable core elements.
  • the coated part with a molten liquid Magnesium alloy, such as MgAl6Sr2 with the designation AJ62, in Casting process at a temperature of approx. 600 to 800 ° C, especially at approx. 680 ° C to 720 ° C and under a pressure of approx. 500 to 1200 bar, in particular about 850 to 900 bar, the molten Magnesium alloy is very advantageous with the porous coating connects and the coating at the same time under the high pressure to approx. 70 compressed to 90%, in particular to about 80%, of their original thickness becomes.
  • the temperature and pressure result between the Magnesium alloy and the coated starting part one integral connection.
  • Cu phases 110 are clearly recognizable and Si primary crystals 108 in aluminum alloy 102, whereas the Coating 104 has a much finer, porous structure.
  • FIG. 2 shows a micrograph of a light metal composite casting 200 from FIG hypereutectic aluminum alloy called AlSi17Cu4Mg A390 and the magnesium alloy MgAl6Sr2 with the designation AJ62 with Interlayer. It can be seen how the molten Magnesium alloy 206 has penetrated into the porous coating (212) and the intermediate layer 204 was formed under pressure. The Interlayer 204 is opposite to the original porous Coating compressed, the magnesium alloy 206 and the Intermediate layer 204 are integrally connected. The Transition from the intermediate layer 204 to the aluminum alloy 202 of the The output part is much less fluent, which the rather shows the positive character of this connection.
  • an insulating, ductile intermediate layer is formed, which on the one hand has sufficient strength and a sufficient distance limit, tensions between the two composite materials through plastic Compensate for deformation and secondly initiate a crack for example on the sharp-edged silicon particles 208 of the Aluminum alloy 202 and crack propagation due to brittle phases of the Magnesium alloy 206 by separating the Si particles 208 from the Magnesium phases prevented.
  • connection method according to the invention is particularly suitable Dimensions for the production of the crankcase of internal combustion engines, the light metal composite casting is accordingly a crankcase for an internal combustion engine.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP20030025165 2002-12-18 2003-11-04 Pièce moulée composite en métal léger et son procédé de fabrication Expired - Lifetime EP1433552B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE10259700 2002-12-18
DE2002159700 DE10259700A1 (de) 2002-12-18 2002-12-18 Verfahren zur Herstellung eines Leichtmetall-Verbundgussteil sowie Leichtmetall-Verbundgussteil

Publications (2)

Publication Number Publication Date
EP1433552A1 true EP1433552A1 (fr) 2004-06-30
EP1433552B1 EP1433552B1 (fr) 2009-05-06

Family

ID=32403998

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20030025165 Expired - Lifetime EP1433552B1 (fr) 2002-12-18 2003-11-04 Pièce moulée composite en métal léger et son procédé de fabrication

Country Status (3)

Country Link
EP (1) EP1433552B1 (fr)
DE (2) DE10259700A1 (fr)
ES (1) ES2322700T3 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102805A1 (fr) 2009-03-11 2010-09-16 Elgan-Diamantwerkzeuge Gmbh & Co. Kg Procédé de finition d'alésages, outil d'usinage et machine d'usinage associée, ainsi que pièce
CN103372641A (zh) * 2012-04-28 2013-10-30 宇宙钢丝绳有限公司 一种钢丝绳绳头浇铸方法

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB689224A (en) * 1950-04-03 1953-03-25 Aluminium Lab Ltd Process for the production of light-metal castings having metallic inserts
GB747137A (en) * 1953-03-06 1956-03-28 Metallgesellschaft Ag Method of producing compound castings between a metal or alloy and magnesium or magnesium alloys
DE2115910A1 (de) * 1970-04-02 1972-05-31 Toyota Jidosha Kogyo K.K., Toyota (Japan) Verfahren zum Verbinden von Metallen

Family Cites Families (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
NL97314C (fr) * 1955-09-29
CH682307A5 (fr) * 1991-02-05 1993-08-31 Alusuisse Lonza Services Ag
JP3078411B2 (ja) * 1992-11-12 2000-08-21 株式会社ユニシアジェックス 複合アルミニウム部材の製造方法
DE19745725A1 (de) * 1997-06-24 1999-01-07 Ks Aluminium Technologie Ag Verfahren zum Herstellen eines Verbundgussteils
WO1998058755A1 (fr) * 1997-06-24 1998-12-30 Ks Aluminium-Technologie Ag Procede de production d'une piece de fonte composite
DE19733205B4 (de) * 1997-08-01 2005-06-09 Daimlerchrysler Ag Beschichtung für eine Zylinderlauffläche einer Hubkolbenmaschine aus einer übereutektischen Aluminium/Siliziumlegierung, Spritzpulver zu deren Herstellung und deren Verwendung
US6443211B1 (en) * 1999-08-31 2002-09-03 Cummins Inc. Mettallurgical bonding of inserts having multi-layered coatings within metal castings
DE10019793C1 (de) * 2000-04-20 2001-08-30 Federal Mogul Friedberg Gmbh Zylinderlaufbuchse für Verbrennungskraftmaschinen und Herstellungsverfahren

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB689224A (en) * 1950-04-03 1953-03-25 Aluminium Lab Ltd Process for the production of light-metal castings having metallic inserts
GB747137A (en) * 1953-03-06 1956-03-28 Metallgesellschaft Ag Method of producing compound castings between a metal or alloy and magnesium or magnesium alloys
DE2115910A1 (de) * 1970-04-02 1972-05-31 Toyota Jidosha Kogyo K.K., Toyota (Japan) Verfahren zum Verbinden von Metallen

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2010102805A1 (fr) 2009-03-11 2010-09-16 Elgan-Diamantwerkzeuge Gmbh & Co. Kg Procédé de finition d'alésages, outil d'usinage et machine d'usinage associée, ainsi que pièce
DE102009013625A1 (de) 2009-03-11 2010-09-16 Elgan-Diamantwerkzeuge Gmbh & Co. Kg Verfahren zur Feinbearbeitung von Bohrungen, Bearbeitungswerkzeug und Bearbeitungsmaschine hierfür sowie Werkstück
CN103372641A (zh) * 2012-04-28 2013-10-30 宇宙钢丝绳有限公司 一种钢丝绳绳头浇铸方法

Also Published As

Publication number Publication date
ES2322700T3 (es) 2009-06-25
EP1433552B1 (fr) 2009-05-06
DE50311494D1 (de) 2009-06-18
DE10259700A1 (de) 2004-07-15

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