EP0928654A1 - Procédé de fabrication des pièces composites avec des matériaux liquides ou semi liquides - Google Patents

Procédé de fabrication des pièces composites avec des matériaux liquides ou semi liquides Download PDF

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Publication number
EP0928654A1
EP0928654A1 EP99100207A EP99100207A EP0928654A1 EP 0928654 A1 EP0928654 A1 EP 0928654A1 EP 99100207 A EP99100207 A EP 99100207A EP 99100207 A EP99100207 A EP 99100207A EP 0928654 A1 EP0928654 A1 EP 0928654A1
Authority
EP
European Patent Office
Prior art keywords
open
casting
pore structure
predetermined
alloy
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.)
Withdrawn
Application number
EP99100207A
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German (de)
English (en)
Inventor
Hauke Müller-Späth
Peter R. Sahm
Pejo Stojanov
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.)
Gut Giesserei Umwelt Technik GmbH
Original Assignee
Gut Giesserei Umwelt Technik GmbH
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.)
Filing date
Publication date
Application filed by Gut Giesserei Umwelt Technik GmbH filed Critical Gut Giesserei Umwelt Technik GmbH
Publication of EP0928654A1 publication Critical patent/EP0928654A1/fr
Withdrawn legal-status Critical Current

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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
    • B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
    • 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
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
    • B22F3/24—After-treatment of workpieces or articles
    • B22F3/26—Impregnating
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C1/00—Making non-ferrous alloys
    • C22C1/10—Alloys containing non-metals
    • C22C1/1036—Alloys containing non-metals starting from a melt

Definitions

  • the invention relates to a method for producing a component in a mold by means of a casting material, in particular by means of a thixo casting process at least one partially liquid material, by means of thixo forging or by means of a pressure-assisted casting with a liquid material, according to the generic term of claim 1.
  • a special casting process from the class of "semi-solid metalforming" represents thixo casting. This is related to die casting The process is characterized by the special nature of the processing of the Metal in a partially liquid state. Because of the completely for a forming process this offers atypical "pouring temperature" within the solidification interval Thixo casting a process potential between the forming of casting processes and can be classified as forming by forging processes.
  • Such a thixo casting process is published, for example, in DE 196 05 839 A1 and meets the requirements of an economical and innovative Manufacturing technology can be provided.
  • the after This special casting process produces castings with "near-net-shape" quality are weldable, pressure-tight and heat-treatable.
  • a typical area of application lies in the substitution of high quality components due to high Requirements for the material properties cannot be die-cast, special costly forging or mold casting.
  • Typical components include e.g. Brake cylinders, parts of the vehicle injection system, Vehicle chassis parts, brake discs or bearing bushes.
  • the thixo casting process can be divided into three process steps. This includes the production of a special primary material, the Neither warming up to the partially fluid state and the directly connected one Shaping through a modified die casting process. Every single one Step includes a variety of parameters, their precise control and Controls are critical to the success of the process.
  • the invention has for its object to provide an improved method of the above.
  • Tribological and mechanical Properties of the component can be improved.
  • a strength, a degree of hardness, a Surface quality, an alloy composition, a porosity, a ductility, a lubricating effect, a conductivity and / or a density a strength, a degree of hardness, a Surface quality, an alloy composition, a porosity, a ductility, a lubricating effect, a conductivity and / or a density.
  • the open-pore structure has a high strength, a predetermined degree of hardness, a predetermined surface quality, a predetermined alloy composition, a predetermined one Porosity, a predetermined ductility, a predetermined, in particular good, lubricating effect, a predetermined, especially good, conductivity and or a predetermined, in particular high or low, density.
  • a method for producing such open-pore structures is, for example, in DE 198 51 250.3 described by the same applicant.
  • the casting material is expediently a metal or a metal alloy.
  • the open-pore structure is made of a ceramic or metallic material, in particular iron, or one Alloy, in particular a non-ferrous alloy or a particle-reinforced alloy, manufactured.
  • Corresponding material properties of the component with locally trained two or three different phases i.e. with a double or triple gradient, is achieved in that the casting material and the open-pore structure consist of the same material or different materials.
  • a good controllability of the compression of the open-pore material without Turbulent flows are achieved by using the thixo casting process or other pressure-assisted casting processes a piston speed, a piston pressure, a process pressure and / or a temperature is selected such that the process of laminar compression of the open-pore structure Flows of the casting material.
  • the process pressure chosen such that there is a predetermined infiltration and / or deformation mechanism sets is by appropriate choice of process pressure also a production of a gradient component without deformation, so only with infiltration, possible.
  • the open-pore structure is expediently a foam or a lattice structure, as described for example in DE 198 51 250.3 by the same applicant.
  • An improvement in wettability and infiltration of the open pore Structure is achieved in that the open-pore structure before the casting process is coated with one or more materials.
  • the open-pore lattice structure becomes part of the infiltration with at least one Element such as primary silicon for increasing wear resistance, or coated with other high-temperature or hardening elements.
  • the open-pore structure is expediently covered with a Proportion of a high-strength, hardening, wear-resistant and / or lubricating Element coated.
  • the inserted open-pore structure is advantageously a body that at least is tight on one side and at least one side as an open-pore structure Contact with an infiltration material, in particular the casting material.
  • a metallic or non-metallic, such as a ceramic, open-pore structure is infiltrated with a partially liquid suspension or alloy.
  • the goal is manufacturing a composite material system in which one or more component areas locally optimized, e.g. strengthened, in a function-related manner.
  • Possible Areas of application are the local increase in wear resistance a component to improve tribological properties or improve properties through targeted composite materials.
  • To the requirements that are placed on the material include improvement in strength, Ductility, lubrication, conductivity, etc.
  • Possible components are, for example Brake discs or gears, their circumferential strength through storage a wear-resistant open-pore structure is improved, or bearing bushes, the lubricating effect at predetermined points by storing the open-pore structure is increased.
  • the expression “high strength” here means open-pore Structures in the form of foams that are essentially rigid, for example open-pored structures made of metal or ceramic.
  • the expression “essentially rigid” here means that the open-pore structures are not easily compressible sponges made of plastic or natural material.
  • the open-pore Structures 12 a compression pressure with a corresponding force vector 22. 1 that the arrangement of abutments 16th and open-pore structure 12 is such that the resulting support vector 20 essentially parallel and opposite to the force vector 22 the die casting process is aligned. In this way, only result resulting compression forces on the open-pored structure 12, without shear forces, so that during the thixo casting process or other pressure-assisted Casting process by the casting pressure a controlled and predetermined compression of the open-pore structures 12 takes place without their complete destruction.
  • the result of the method according to the invention is by means of a sectional view illustrated by the manufactured component in Fig. 2.
  • the gear 24 is in the Area 26 formed exclusively by the casting material 28.
  • the open-pore structure 12 is infiltrated and compressed by the casting material 28, so that there is a corresponding Alloy layer 30 at the tips of the prongs 14 results. It also has a boundary layer 32 between the alloy layer 30 and the casting material 28 educated.
  • the tip 40 has a different material property due to a different composite material is achieved.
  • the casting material 28 and the material of the open-pore Structure 12 is chosen in such a way that, for example, corresponding mechanical ones Properties and / or wear properties in the corresponding Areas of the teeth 14 result.
  • both the properties of the cast material 28 and the interface structure 32 between the Casting material 28 and the alloy layer 30 can be improved.
  • the method according to the invention uses the special properties of partially liquid casting material during the thixo casting process such that the open-pored structure 12 serves as a kind of filter and first the liquid phase of the Partial liquid material can penetrate, which the surface of the open-pore Structure 12 particularly well wetted.
  • the solid part of the partially liquid casting material follows later and the alloy layer is formed in a corresponding manner 30 and the boundary layer 32.
  • FIG. 2 results in the corresponding desired changed material properties in trained those local areas in which engaging forces on the gear 24 act.
  • the lattice structure is for example a CMM, as from DE 198 51 250.3 of the same Applicant known.
  • the use of liquid materials is also extensive the invention. This only changes the infiltration mechanism and one if necessary, the deformation of the lattice structure (CMM).
  • CMM lattice structure
  • the existing casting pressure determines the infiltration and Mechanism of compression or deformation of the lattice structure. At low Process pressures and corresponding strength of the open-pore lattice structure there may even be an infiltration process without deformation or compression of the structure.
  • the gradient technology is a compressed or uncompressed grid structure makes sense and can be implemented.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Manufacturing & Machinery (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
EP99100207A 1998-01-09 1999-01-07 Procédé de fabrication des pièces composites avec des matériaux liquides ou semi liquides Withdrawn EP0928654A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE1998100594 DE19800594A1 (de) 1998-01-09 1998-01-09 Verfahren zum Herstellen eines Bauteils mit teilflüssigen Werkstoffen
DE19800594 1998-01-09

Publications (1)

Publication Number Publication Date
EP0928654A1 true EP0928654A1 (fr) 1999-07-14

Family

ID=7854243

Family Applications (1)

Application Number Title Priority Date Filing Date
EP99100207A Withdrawn EP0928654A1 (fr) 1998-01-09 1999-01-07 Procédé de fabrication des pièces composites avec des matériaux liquides ou semi liquides

Country Status (2)

Country Link
EP (1) EP0928654A1 (fr)
DE (1) DE19800594A1 (fr)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174200A2 (fr) * 2000-07-20 2002-01-23 Adam Opel Ag Procédé de coulée et noyau utilisé dans ce procédé
WO2010131273A1 (fr) * 2009-05-13 2010-11-18 Freni Brembo S. .A. Procédé de fabrication d'un composant pour système de freinage et composant pour système de freinage

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102011011801A1 (de) * 2011-02-19 2012-08-23 Volkswagen Ag Verfahren und Anordnung zum Gießen eines Bauteilrohlings aus einer Leichtmetalllegierung
DE102013200680B4 (de) * 2012-01-19 2017-08-03 Ksb Aktiengesellschaft Verfahren zur Herstellung eines mit einer Verschleißschutzschicht versehenen Bauteils sowie eine Vorrichtung zur Durchführung des Verfahrens

Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120355A (ja) * 1982-12-27 1984-07-11 Toyota Motor Corp 鉄系焼結部材の鋳包み方法
DE3801847A1 (de) * 1987-01-29 1988-08-11 Metal Leve Sa Verfahren zur herstellung von kolben fuer brennkraftmaschinen sowie kolben, insbesondere hergestellt durch dieses verfahren
JPH04288942A (ja) * 1991-03-15 1992-10-14 Ube Ind Ltd 精密鋳造金型の製造方法
EP0575685A1 (fr) * 1992-06-23 1993-12-29 Sulzer Innotec Ag Moulage de précision ayant des surfaces d'usure
JPH07138087A (ja) * 1993-11-16 1995-05-30 Nippon Carbon Co Ltd 金属含浸セラミックス並びに該金属含浸セラミックスに各種金属を鋳包みしてなるセラミックス金属複合材料並びにその製造方法
EP0670441A1 (fr) * 1994-02-25 1995-09-06 KS Aluminium Technologie Aktiengesellschaft Palier à glissement
EP0755738A1 (fr) * 1995-07-28 1997-01-29 Mazda Motor Corporation Procédé de moulage par injection et pièce coulée
DE19605839A1 (de) * 1996-02-16 1997-08-21 Gut Gieserei Umwelt Technik Gm Verfahren und Vorrichtung zur Herstellung von Körpern auf metallischer Basis in teilflüssigem Zustand
DE19810544A1 (de) * 1997-03-11 1998-09-17 Mazda Motor Metallisches, poröses Produkt und Verfahren zur Herstellung desselben

Patent Citations (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59120355A (ja) * 1982-12-27 1984-07-11 Toyota Motor Corp 鉄系焼結部材の鋳包み方法
DE3801847A1 (de) * 1987-01-29 1988-08-11 Metal Leve Sa Verfahren zur herstellung von kolben fuer brennkraftmaschinen sowie kolben, insbesondere hergestellt durch dieses verfahren
JPH04288942A (ja) * 1991-03-15 1992-10-14 Ube Ind Ltd 精密鋳造金型の製造方法
EP0575685A1 (fr) * 1992-06-23 1993-12-29 Sulzer Innotec Ag Moulage de précision ayant des surfaces d'usure
JPH07138087A (ja) * 1993-11-16 1995-05-30 Nippon Carbon Co Ltd 金属含浸セラミックス並びに該金属含浸セラミックスに各種金属を鋳包みしてなるセラミックス金属複合材料並びにその製造方法
EP0670441A1 (fr) * 1994-02-25 1995-09-06 KS Aluminium Technologie Aktiengesellschaft Palier à glissement
EP0755738A1 (fr) * 1995-07-28 1997-01-29 Mazda Motor Corporation Procédé de moulage par injection et pièce coulée
DE19605839A1 (de) * 1996-02-16 1997-08-21 Gut Gieserei Umwelt Technik Gm Verfahren und Vorrichtung zur Herstellung von Körpern auf metallischer Basis in teilflüssigem Zustand
DE19810544A1 (de) * 1997-03-11 1998-09-17 Mazda Motor Metallisches, poröses Produkt und Verfahren zur Herstellung desselben

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 008, no. 240 (M - 336) 6 November 1984 (1984-11-06) *
PATENT ABSTRACTS OF JAPAN vol. 017, no. 096 (M - 1372) 25 February 1993 (1993-02-25) *
PATENT ABSTRACTS OF JAPAN vol. 095, no. 008 29 September 1995 (1995-09-29) *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP1174200A2 (fr) * 2000-07-20 2002-01-23 Adam Opel Ag Procédé de coulée et noyau utilisé dans ce procédé
EP1174200A3 (fr) * 2000-07-20 2003-10-01 Adam Opel Ag Procédé de coulée et noyau utilisé dans ce procédé
WO2010131273A1 (fr) * 2009-05-13 2010-11-18 Freni Brembo S. .A. Procédé de fabrication d'un composant pour système de freinage et composant pour système de freinage

Also Published As

Publication number Publication date
DE19800594A1 (de) 1999-07-15

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