EP1688517A1 - Procédé de fabrication d'une couche métallique d'adhésion sur une pièce coulée - Google Patents

Procédé de fabrication d'une couche métallique d'adhésion sur une pièce coulée Download PDF

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Publication number
EP1688517A1
EP1688517A1 EP05111061A EP05111061A EP1688517A1 EP 1688517 A1 EP1688517 A1 EP 1688517A1 EP 05111061 A EP05111061 A EP 05111061A EP 05111061 A EP05111061 A EP 05111061A EP 1688517 A1 EP1688517 A1 EP 1688517A1
Authority
EP
European Patent Office
Prior art keywords
casting
adhesion
promoting layer
layer
annealing
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
EP05111061A
Other languages
German (de)
English (en)
Other versions
EP1688517B1 (fr
Inventor
Clemens Maria Verpoort
Maik Broda
Andreas Storz
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.)
Ford Werke GmbH
Original Assignee
Ford Werke 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 Ford Werke GmbH filed Critical Ford Werke GmbH
Publication of EP1688517A1 publication Critical patent/EP1688517A1/fr
Application granted granted Critical
Publication of EP1688517B1 publication Critical patent/EP1688517B1/fr
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

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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
    • B22D19/0009—Cylinders, pistons
    • 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
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D3/00—Electroplating: Baths therefor
    • C25D3/02—Electroplating: Baths therefor from solutions
    • C25D3/42—Electroplating: Baths therefor from solutions of light metals
    • C25D3/44—Aluminium
    • C—CHEMISTRY; METALLURGY
    • C25—ELECTROLYTIC OR ELECTROPHORETIC PROCESSES; APPARATUS THEREFOR
    • C25D—PROCESSES FOR THE ELECTROLYTIC OR ELECTROPHORETIC PRODUCTION OF COATINGS; ELECTROFORMING; APPARATUS THEREFOR
    • C25D5/00—Electroplating characterised by the process; Pretreatment or after-treatment of workpieces
    • C25D5/48—After-treatment of electroplated surfaces
    • C25D5/50—After-treatment of electroplated surfaces by heat-treatment

Definitions

  • the invention relates to a method for producing a metallic adhesion-promoting layer on the outer surface of a casting according to the preamble of claim 1.
  • a generic production method is known from DE 10315382.
  • the adhesion-promoting layer is applied by thermal spraying.
  • produced adhesion-promoting layers are porous due to production, which leads to a reduced heat conduction and the layer is only adhesively connected to the UmgußITY, which can lead to premature detachment of the layer under mechanical or thermal loads.
  • the production is relatively expensive.
  • the object of the invention is therefore to improve a production process for an adhesion-promoting layer so that the primer layer has a high adhesive strength on the Umguß stresses and a high thermal conductivity. Furthermore, the primer layer should be inexpensive to manufacture with little manufacturing effort.
  • the adhesion-promoting layer By forming the adhesion-promoting layer by electrodepositing light metals, the adhesion-promoting layer can be applied to the encapsulation body in a simple and cost-effective manner. By subjecting the adhesion-promoting layer to a diffusion annealing process after the electrodeposition, a high-strength, heat-conducting metallurgical transition is produced between the encapsulation body and the adhesion-promoting layer.
  • the adhesion-promoting layer contains at least as a component a light metal from the group of aluminum and magnesium. These light metals are widely used casting materials.
  • the Umguß moments When pouring the Umguß moments combine casting material and bonding layer metallurgically and thus form a composite material. Together with the existing metallurgical connection between Umguß Congress and bonding layer thus results in a high-strength, heat-conducting connection between Umgußterrorism and casting material.
  • the primer layer contains magnesium, although the casting material contains magnesium. Then it is ensured that a metallurgical connection between casting material and bonding layer is formed during encapsulation.
  • the adhesion-promoting layer advantageously consists of pure aluminum.
  • a 99.9% pure aluminum layer has very favorable heat-conducting properties. This creates a favorable heat transfer between Umgußsammlung and casting material.
  • Pure aluminum can z.
  • Example be used when the Umgußsammlung is a cylinder liner of an internal combustion engine made of steel or gray cast iron, which is poured into a cylinder block consisting of an aluminum alloy as a casting material. Then a good heat transfer between bush and cylinder block is advantageous to dissipate the heat from the combustion chamber, which is at least partially formed by the cylinder liner, as quickly as possible in the cylinder block.
  • the annealing temperature is 400 to 600 ° C. In this temperature range, sufficient diffusion rates between the adhesion-promoting layer and the encapsulation body can be achieved in the case of use of light metals in industrially reasonable periods of time.
  • the useful periods for the annealing time is preferably 2 to 20 minutes.
  • the should Annealing temperature if possible, does not significantly exceed the melting temperature of the material of the bonding layer.
  • the annealing temperature is 540 to 580 ° C.
  • the diffusion rate is particularly favorable when using aluminum and / or magnesium as a constituent of the adhesion-promoting layer.
  • the undesired oxidation of the adhesion-promoting layer on the outer surface is thus minimized.
  • Such oxidation can be almost completely avoided if the diffusion annealing takes place under a protective gas atmosphere. Then even higher annealing temperatures than specified here are possible.
  • Temperature limit in the diffusion annealing is the temperature resistance of the casting material of the Umguß stresses.
  • a favorable diffusion annealing process results at an annealing temperature of 560 ° C and an annealing time of 5 minutes. Then, in particular, an adhesion-promoting layer of pure aluminum can be applied particularly efficiently to a casting of gray cast iron.
  • the layer thickness of the adhesion-promoting layer is preferably from 5 to 50 ⁇ m, with 10 to 15 ⁇ m being particularly advantageous. This is a good compromise between sufficient thickness to achieve the required connection between the casting and cast body during casting and the required low production costs.
  • the encapsulation body is machined on the coating surfaces, where the adhesion-promoting layer is applied, before the electrodeposition by dry machining.
  • the dry machining ensures that no impurities or processing residues is on or in the material of the Umguß stresses. Such contaminants adversely affect the adhesion of the primer layer to the overmold.
  • the coating surface has a profiling.
  • the profiling can be generated in any way. Either it is created by the above-mentioned machining. As a form, any such known profiling is possible.
  • the profiling can also be caused by sandblasting. Or the profiling occurs in the Urformung the Umguß stressess, if this z. B. was prepared as Rauhgußteil, as described in the patent DE 10103596.
  • Figure 1 shows a schematic section through a casting 1, in which a Umgußteil 2 is poured.
  • the casting 1 could here be a cylinder block, the casting 2 a cylinder liner. Between the casting 2 and casting material 3 is the bonding layer. 4
  • FIG. 2 shows a microscopically enlarged material micrograph of a casting produced by the inventive process from the transition between casting 2 and casting 3. It can be clearly seen the cast iron structure of the casting 2 and the matrix structure of the casting 3, here an aluminum alloy. Between the casting 2 and casting material 3 is the bonding layer. 4
  • FIG. 3 shows an enlarged detail from FIG. 2 in the area of the adhesion-promoting layer 4.
  • the very good metallurgical bonding of the adhesion-promoting layer 4 to the encapsulation body 2 as well as to the casting material 3 can clearly be seen.

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Electrochemistry (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
EP20050111061 2005-02-03 2005-11-22 Procédé de fabrication d'une couche métallique d'adhésion sur une pièce coulée Expired - Fee Related EP1688517B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102005005209 2005-02-03

Publications (2)

Publication Number Publication Date
EP1688517A1 true EP1688517A1 (fr) 2006-08-09
EP1688517B1 EP1688517B1 (fr) 2011-01-12

Family

ID=36190798

Family Applications (1)

Application Number Title Priority Date Filing Date
EP20050111061 Expired - Fee Related EP1688517B1 (fr) 2005-02-03 2005-11-22 Procédé de fabrication d'une couche métallique d'adhésion sur une pièce coulée

Country Status (2)

Country Link
EP (1) EP1688517B1 (fr)
DE (1) DE502005010834D1 (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008011A1 (de) * 2007-02-15 2008-08-21 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Ausbildung einer Aluminium-Diffusionsschicht zum Oxidationsschutz
EP2186582A1 (fr) * 2008-11-18 2010-05-19 Georg Fischer Automotive AG Boîtier de manivelle
DE102008048109B4 (de) * 2008-04-17 2015-01-29 Ks Aluminium-Technologie Gmbh Verfahren zur Herstellung eines metallischen Bauteils und Verwendung eines Zylinderteils als Grundkörper zur Durchführung des Verfahrens
CN104368791A (zh) * 2014-10-11 2015-02-25 北京科技大学 一种镁/镁固液复合铸造成型方法
CN113290231A (zh) * 2021-05-31 2021-08-24 华中科技大学 消失模铸造液液复合铝/镁双金属的方法及铝/镁双金属

Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046205A (en) * 1959-07-23 1962-07-24 Dwight E Couch Nickel-aluminum alloy coatings
DE2344899B1 (de) * 1973-09-06 1974-02-07 Mahle Gmbh Verfahren zur Herstellung eines Verbundgussstueckes
US3892637A (en) * 1969-03-10 1975-07-01 Polti Jean Loup Method of treatment of metal surfaces
US4101386A (en) * 1971-05-07 1978-07-18 Siemens Aktiengesellschaft Methods of coating and surface finishing articles made of metals and their alloys
JPH0839432A (ja) * 1994-05-25 1996-02-13 Kobe Steel Ltd 耐摩耗性に優れた表面処理金属部材およびその製法
DE10103596A1 (de) 2001-01-26 2002-08-01 Bruehl Eisenwerk Verfahren zur Herstellung eines aus wenigstens zwei unterschiedlichen Metallwerkstoffen gebildeten Gußwerkstücks
DE10315382A1 (de) 2003-04-04 2004-10-28 Daimlerchrysler Ag Umgusskörper zum Eingießen in ein Gussteil als Leichtmetall, Verbundgussteil daraus und Verfahren zur Herstellung des Umgusskörpers sowie Verfahren zur Herstellung des Verbundgussteiles
EP1624093A1 (fr) * 2004-08-04 2006-02-08 Aluminal Oberflächentechnik GmbH & Co. KG Recouvrir des substrats en métaux legers ou en alliages de métaux légers

Patent Citations (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3046205A (en) * 1959-07-23 1962-07-24 Dwight E Couch Nickel-aluminum alloy coatings
US3892637A (en) * 1969-03-10 1975-07-01 Polti Jean Loup Method of treatment of metal surfaces
US4101386A (en) * 1971-05-07 1978-07-18 Siemens Aktiengesellschaft Methods of coating and surface finishing articles made of metals and their alloys
DE2344899B1 (de) * 1973-09-06 1974-02-07 Mahle Gmbh Verfahren zur Herstellung eines Verbundgussstueckes
JPH0839432A (ja) * 1994-05-25 1996-02-13 Kobe Steel Ltd 耐摩耗性に優れた表面処理金属部材およびその製法
DE10103596A1 (de) 2001-01-26 2002-08-01 Bruehl Eisenwerk Verfahren zur Herstellung eines aus wenigstens zwei unterschiedlichen Metallwerkstoffen gebildeten Gußwerkstücks
DE10315382A1 (de) 2003-04-04 2004-10-28 Daimlerchrysler Ag Umgusskörper zum Eingießen in ein Gussteil als Leichtmetall, Verbundgussteil daraus und Verfahren zur Herstellung des Umgusskörpers sowie Verfahren zur Herstellung des Verbundgussteiles
EP1624093A1 (fr) * 2004-08-04 2006-02-08 Aluminal Oberflächentechnik GmbH & Co. KG Recouvrir des substrats en métaux legers ou en alliages de métaux légers

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN vol. 1996, no. 06 28 June 1996 (1996-06-28) *

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007008011A1 (de) * 2007-02-15 2008-08-21 Rolls-Royce Deutschland Ltd & Co Kg Verfahren zur Ausbildung einer Aluminium-Diffusionsschicht zum Oxidationsschutz
DE102008048109B4 (de) * 2008-04-17 2015-01-29 Ks Aluminium-Technologie Gmbh Verfahren zur Herstellung eines metallischen Bauteils und Verwendung eines Zylinderteils als Grundkörper zur Durchführung des Verfahrens
EP2110465A3 (fr) * 2008-04-17 2015-08-19 KS Kolbenschmidt aluminium- Technologie GmbH Procédé destiné à la fabrication d'un composant métallique ainsi que composant fabriqué de cette manière
EP2186582A1 (fr) * 2008-11-18 2010-05-19 Georg Fischer Automotive AG Boîtier de manivelle
WO2010057810A1 (fr) * 2008-11-18 2010-05-27 Georg Fischer Automotive Ag Carter de vilebrequin
CN104368791A (zh) * 2014-10-11 2015-02-25 北京科技大学 一种镁/镁固液复合铸造成型方法
CN113290231A (zh) * 2021-05-31 2021-08-24 华中科技大学 消失模铸造液液复合铝/镁双金属的方法及铝/镁双金属
CN113290231B (zh) * 2021-05-31 2022-07-05 华中科技大学 消失模铸造液液复合铝镁双金属的方法及铝镁双金属

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Publication number Publication date
DE502005010834D1 (de) 2011-02-24
EP1688517B1 (fr) 2011-01-12

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