EP0450722A1 - Procédé pour obtenir une bondage métallurgique continue entre des fourreaux cylindres et un bâtiment-moteur moulé d'un moteur à combustion interne - Google Patents

Procédé pour obtenir une bondage métallurgique continue entre des fourreaux cylindres et un bâtiment-moteur moulé d'un moteur à combustion interne Download PDF

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Publication number
EP0450722A1
EP0450722A1 EP91200747A EP91200747A EP0450722A1 EP 0450722 A1 EP0450722 A1 EP 0450722A1 EP 91200747 A EP91200747 A EP 91200747A EP 91200747 A EP91200747 A EP 91200747A EP 0450722 A1 EP0450722 A1 EP 0450722A1
Authority
EP
European Patent Office
Prior art keywords
lining
process according
metal
crankcase
constituted
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
EP91200747A
Other languages
German (de)
English (en)
Other versions
EP0450722B1 (fr
Inventor
Renato Guerriero
Ilario Tangerini
Sergio Gallo
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.)
Alutek Spa enirisorse SpA
Teksid Spa enirisorse SpA
Original Assignee
ALUTEK Srl
Temav SpA
Enirisorse SpA
Teksid SpA
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 ALUTEK Srl, Temav SpA, Enirisorse SpA, Teksid SpA filed Critical ALUTEK Srl
Publication of EP0450722A1 publication Critical patent/EP0450722A1/fr
Application granted granted Critical
Publication of EP0450722B1 publication Critical patent/EP0450722B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • 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
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F1/00—Cylinders; Cylinder heads 
    • F02F1/004—Cylinder liners
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F02—COMBUSTION ENGINES; HOT-GAS OR COMBUSTION-PRODUCT ENGINE PLANTS
    • F02F—CYLINDERS, PISTONS OR CASINGS, FOR COMBUSTION ENGINES; ARRANGEMENTS OF SEALINGS IN COMBUSTION ENGINES
    • F02F7/00—Casings, e.g. crankcases or frames
    • F02F7/0085—Materials for constructing engines or their parts
    • F02F2007/009—Hypereutectic aluminum, e.g. aluminum alloys with high SI content

Definitions

  • the present invention relates to a process for obtaining a continuous metallurgical bond between the linings of the cylinders and the cast which constitutes the crankcase of an internal-combustion engine.
  • each piston made from an aluminum alloy, slides with precision inside a cylindrical hollow provided inside the crankcase of the engine, which is generally made from cast iron, but which can also be obtained from a cast made from an aluminum alloy.
  • the hollow of the cylinders linings are inserted, which are made from high-wear-strength materials, such as, e.g., steel or other aluminum alloys.
  • linings are inserted inside the engine crankcase, after the latter is manufactured by casting, by heat-fitting or, during the same casting step, arranging the linings as inserts inside the casting mold.
  • the coupling between the lining and the crankcase is achieved by mechanical gripping, without material continuity, and this may cause drawbacks in the cooling down of the internal surface of the cylinders by effect of poor heat conductivity due to the discontinuity between the materials.
  • the process according to the present invention secures that the classic requirements of the welding operations are met: removal of surface impurities and oxides, intimate contact and coalescence of the materials to be bonded.
  • metals which can be not easily coupled by means of other techniques can be bonded by means of such a welding type.
  • the process according to the present invention for obtaining a continuous metallurgical bond between the linings of the cylinders and the cast which constitutes the crankcase of an internal-combustion engine, which crankcase is made from a material different from the material which constitutes the linings comprises carrying out a surface treatment by physically, chemically or electrochemically depositing a thin metal layer on the external surface of the lining, which metal is different from the metals which are contained in the materials of the lining and of the crankcase, and is capable of increasing the wettability of, and the heat transfer coefficient between, the alloy which constitutes the crankcase and the material which constitutes the lining and the cast, and casting around the same lining, positioned inside the mould, the metal or metal alloy from which the crankcase is made.
  • the lining and the cast can be constituted by aluminum or magnesium or by aluminum or magnesium alloys: however, they must have mutually different compositions.
  • the lining may also be made from a composite material having as its metal matrix, aluminum or magnesium or aluminum or magnesium alloys: such a type of material is constituted by a metal phase (or a metal allay phase), which surrounds and links other phases, which constitute the reinforcement (powders or ceramic fibres).
  • the reinforcement is endowed with high values of mechanical strength and hardness, and the stresses to which the matrix is submitted are transferred to it.
  • the matrix should be endowed with suitable characteristics as a function of the envisaged type of application.
  • the reinforcement can be constituted by long ceramic fibres or short ceramic fibres (Al2O3, SiC, Si3N4; BN, SiO2) or by ceramic "whiskers” (SiC, Si3N4, B4C, Al2O3) or by non-metal powders (Sit, BN, Si3N4, B4C, SiO2 or Al2O3).
  • the methods for preparing the composites can be the following:
  • the composite material can be obtained either directly or by means of a following mechanical machining/processing.
  • the metal which constitutes the thin layer preferably having a thickness comprised within the range of from 10 to 100 nm, to be deposited onto the surface of the metal material or of the metal-matrix composite material, which should be different from those contained in the materials and in the cast, can be preferably Selected from among Au, Ag, Cu, Ni, Pt, Pd, Cr, W, Ir, Mo, Ta, Nb, Os, Re, Rh, Ru and Zr.
  • the deposition of said thin metal layer can be preferably carried out by "sputtering" or by electrochemical deposition.
  • any other methods known in the art, of chemical, physical, and so forth, types, for surface coating can be used: for example, plasma-spraying, laser-assisted deposition, thermal-evaporation deposition, magneton-assisted deposition, CDV ("Chemical Vapour Deposition"), and so forth.
  • the liquid to be cast will be capable of wetting the metal material or the metal-matrix composite to a sufficient extent to transfer heat to it, wash out the layer of oxide which is unavoidably formed on the surface of said material and directly binding to the material, in case a metal material is used, or to the metal matrix, if a composite is used.
  • the casting operating parameters have to be so adjusted as to secure that a suitable stream of overheated liquid will lap the surfaces of the materials.
  • the position of the material inside the die is suitably selected and that the shape of the downward duct (ingress duct) and of the upward duct (egress duct) inside the die is properly designed, so that the liquid metal will be obliged to lap, wet and wash out the walls of the material before said liquid metal is cooled down to a too low temperature.
  • the matter is of keeping under control the following three parameters: material pre-heating temperature, metal (or alloy) casting temperature, flux conditions. In such a way, an excellent metallurgical bond between the material and the cast can be obtained.
  • the linings of the cylinders can be obtained by means of techniques known in the art (for example: gravity casting or pressure casting or die-casting or squeeze-casting; or powder metallurgy, or by infiltration or blending), and either directly or by a successive mechanical machining by tool machines or by plastic-working processes (such as extrusion, lamination or forging).

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Combustion & Propulsion (AREA)
  • General Engineering & Computer Science (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Treatment Of Steel In Its Molten State (AREA)
  • Non-Disconnectible Joints And Screw-Threaded Joints (AREA)
EP91200747A 1990-04-06 1991-03-29 Procédé pour obtenir une bondage métallurgique continue entre des fourreaux cylindres et un bâtiment-moteur moulé d'un moteur à combustion interne Expired - Lifetime EP0450722B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
IT19968A IT1240746B (it) 1990-04-06 1990-04-06 Procedimento per ottenere un legame metallurgico continuo fra canne dei cilindri id il getto costituente il basamento di un motore a combustione interna
IT1996890 1990-04-06

Publications (2)

Publication Number Publication Date
EP0450722A1 true EP0450722A1 (fr) 1991-10-09
EP0450722B1 EP0450722B1 (fr) 1995-01-04

Family

ID=11162713

Family Applications (1)

Application Number Title Priority Date Filing Date
EP91200747A Expired - Lifetime EP0450722B1 (fr) 1990-04-06 1991-03-29 Procédé pour obtenir une bondage métallurgique continue entre des fourreaux cylindres et un bâtiment-moteur moulé d'un moteur à combustion interne

Country Status (11)

Country Link
EP (1) EP0450722B1 (fr)
JP (1) JPH04251657A (fr)
CN (1) CN1027188C (fr)
AT (1) ATE116714T1 (fr)
BR (1) BR9101389A (fr)
CA (1) CA2039878A1 (fr)
DE (1) DE69106418T2 (fr)
DK (1) DK0450722T3 (fr)
ES (1) ES2066332T3 (fr)
GR (1) GR3015109T3 (fr)
IT (1) IT1240746B (fr)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4244502C1 (de) * 1992-12-30 1994-03-17 Bruehl Aluminiumtechnik Zylinderkurbelgehäuse und Verfahren zu seiner Herstellung
EP0659899A1 (fr) * 1993-12-20 1995-06-28 General Motors Corporation Lien métallurgique de métaux et/ou céramiques
CN113999999A (zh) * 2021-10-29 2022-02-01 华中科技大学 稀土增强固液复合铸造镁/铝双金属的制备方法及产品

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102004007774A1 (de) * 2004-02-18 2005-09-15 Mahle Gmbh Laufbuchse für einen Verbrennungsmotor
JP4584058B2 (ja) * 2005-07-08 2010-11-17 トヨタ自動車株式会社 シリンダライナ及びその製造方法
DE102010055162A1 (de) * 2010-12-18 2012-06-21 Mahle International Gmbh Beschichtung sowie beschichtetes Eingussbauteil
BR102013005326A2 (pt) * 2013-03-05 2014-12-02 Mahle Metal Leve Sa Camisa de cilindro para engastamento em um bloco de motor e bloco de motor
CN107598485A (zh) * 2017-07-25 2018-01-19 中原内配集团安徽有限责任公司 一种螺纹加工型缸套的制作工艺
CN114046209A (zh) * 2022-01-13 2022-02-15 爱柯迪股份有限公司 氮化硅纤维增强铝合金发动机缸套及制备方法

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340869A (fr) * 1962-08-17 1963-10-25 Willys Motors Moteur à combustion interne et procédé pour sa fabrication
DE3837254A1 (de) * 1988-11-03 1990-05-10 Bayerische Motoren Werke Ag Leichtmetall-einlage fuer die bildung einer dehnfuge in aus leichtmetallguss gebildeten brennraumwaenden von brennkraftmaschinen, insbesondere zylinderkopfboden von diesel-brennkraftmaschinen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1340869A (fr) * 1962-08-17 1963-10-25 Willys Motors Moteur à combustion interne et procédé pour sa fabrication
DE3837254A1 (de) * 1988-11-03 1990-05-10 Bayerische Motoren Werke Ag Leichtmetall-einlage fuer die bildung einer dehnfuge in aus leichtmetallguss gebildeten brennraumwaenden von brennkraftmaschinen, insbesondere zylinderkopfboden von diesel-brennkraftmaschinen

Non-Patent Citations (3)

* Cited by examiner, † Cited by third party
Title
PATENT ABSTRACTS OF JAPAN, vol. 11, no. 54 (M-563)[2501] 19 February 1987; & JP-A-61 215 439 (YANMAR DIESEL ENGINE CO. LTD.) 25 September 1986 *
PATENT ABSTRACTS OF JAPAN, vol. 12, no. 145 (M-693)[2992] 06 May 1988; & JP-A-62 265 453 (HONDA MOTOR CO. LTD.) 18 November 1987 *
PATENT ABSTRACTS OF JAPAN, vol. 14, no. 113 (M-944)[4056] 02 March 1990; & JP-A-01 313 652 (ISUZU MOTORS LTD.) 19 December 1989 *

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4244502C1 (de) * 1992-12-30 1994-03-17 Bruehl Aluminiumtechnik Zylinderkurbelgehäuse und Verfahren zu seiner Herstellung
EP0659899A1 (fr) * 1993-12-20 1995-06-28 General Motors Corporation Lien métallurgique de métaux et/ou céramiques
CN113999999A (zh) * 2021-10-29 2022-02-01 华中科技大学 稀土增强固液复合铸造镁/铝双金属的制备方法及产品

Also Published As

Publication number Publication date
CN1027188C (zh) 1994-12-28
ES2066332T3 (es) 1995-03-01
DE69106418T2 (de) 1995-07-06
GR3015109T3 (en) 1995-05-31
EP0450722B1 (fr) 1995-01-04
DE69106418D1 (de) 1995-02-16
IT9019968A1 (it) 1991-10-06
ATE116714T1 (de) 1995-01-15
DK0450722T3 (da) 1995-05-15
IT1240746B (it) 1993-12-17
CN1056923A (zh) 1991-12-11
JPH04251657A (ja) 1992-09-08
BR9101389A (pt) 1991-11-26
CA2039878A1 (fr) 1991-10-07
IT9019968A0 (it) 1990-04-06

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