EP1103344B1 - Procédé d'usinage de surfaces, en particulier de surfaces de contact de cylindres de moteurs à combustion interne - Google Patents

Procédé d'usinage de surfaces, en particulier de surfaces de contact de cylindres de moteurs à combustion interne Download PDF

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Publication number
EP1103344B1
EP1103344B1 EP00122286A EP00122286A EP1103344B1 EP 1103344 B1 EP1103344 B1 EP 1103344B1 EP 00122286 A EP00122286 A EP 00122286A EP 00122286 A EP00122286 A EP 00122286A EP 1103344 B1 EP1103344 B1 EP 1103344B1
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EP
European Patent Office
Prior art keywords
cylinder
alloyed
relatively hard
hard material
crystals
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.)
Revoked
Application number
EP00122286A
Other languages
German (de)
English (en)
Other versions
EP1103344A2 (fr
EP1103344A3 (fr
Inventor
Rolf Dipl.-Ing. Heinemann
Klaus Dipl.-Ing. Färber
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.)
Volkswagen AG
Original Assignee
Volkswagen AG
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Filing date
Publication date
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Application filed by Volkswagen AG filed Critical Volkswagen AG
Publication of EP1103344A2 publication Critical patent/EP1103344A2/fr
Publication of EP1103344A3 publication Critical patent/EP1103344A3/fr
Application granted granted Critical
Publication of EP1103344B1 publication Critical patent/EP1103344B1/fr
Anticipated expiration legal-status Critical
Revoked legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B1/00—Processes of grinding or polishing; Use of auxiliary equipment in connection with such processes
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24B—MACHINES, DEVICES, OR PROCESSES FOR GRINDING OR POLISHING; DRESSING OR CONDITIONING OF ABRADING SURFACES; FEEDING OF GRINDING, POLISHING, OR LAPPING AGENTS
    • B24B33/00—Honing machines or devices; Accessories therefor
    • B24B33/02—Honing machines or devices; Accessories therefor designed for working internal surfaces of revolution, e.g. of cylindrical or conical shapes

Definitions

  • the invention relates to a method for machining surfaces, in particular of cylinder surfaces on internal combustion engines with a, consisting of a light alloy alloy cylinder crankcase, wherein in the cylinder surfaces, which are melted by laser, particles of a harder material are alloyed and wherein the light metal matrix with the alloyed hard material particles are subsequently machined and / or honed in at least one method step.
  • EP 176 803 A1 A method for producing a cylinder block made of light metal will be described. First, the cylinder block made of an aluminum alloy is cast. Subsequently is applied to the cylinder surfaces silicon, which is subsequently melted by means of laser beam, so that forms a supersaturated with silicon boundary layer.
  • a partial protrusion of the harder particles from the light metal matrix is expedient for the functionality of the cylinder running surfaces.
  • the particles lying in the running surface and harder than the basic structure of the alloy are exposed in such a way that plateau surfaces of the particles protrude from the other surface of the basic structure.
  • the exposure of the harder particles has hitherto mainly been carried out by etching, whereby the sharp-edged edges of the crystals are uncovered by resetting the light metal matrix.
  • the object of the invention is to provide a further improved machining method for surfaces of light metal alloys, with which an exposure of the particles of harder material without etching is possible.
  • cylinder running surfaces with good tribological properties are intended to be produced, in particular in the case of serial production of internal combustion engines.
  • the tribological properties of the cylinder surfaces of internal combustion engines can be significantly improved even under the conditions of a series production.
  • the exposure of the harder particles is carried out without the use of corrosive agents. Due to the gentle contours of the particles of the harder material damages of piston ring and piston are largely excluded.
  • the combination of elevations (crystal particles) and depressions (fine structure) results in functional advantages in the run-in phase, in particular a good adhesion of the oil film and the avoidance of mechanical disturbances by the acting piston pressure forces.
  • the elevations and depressions are increasingly compensated by mutual removal and order in engine operation. Due to the achievable good friction behavior of the component pairing of piston and cylinder, the friction losses are reduced. As a result, initially reduce the fuel and oil consumption and finally the exhaust emissions of the engine.
  • the method is preferably used for machining cylinder treads 1 on internal combustion engines.
  • the cylinder crankcase 2 of this internal combustion engine is made of a light metal alloy.
  • An alloy is chosen which is relatively easy to handle in the casting process, for example one Aluminum alloy.
  • By smelting of harder components those areas of the cylinder crankcase 2 are subsequently refined, which will be exposed to the later intended use of friction.
  • This relates to the cylinder surfaces 1, whose properties determine the friction and wear behavior of the component pairing of the piston and cylinder.
  • the piston is not shown in detail in the drawing, only its movement is stylized by an arrow.
  • the cylinder surfaces 1 are melted by means of laser. Particles of a harder material are introduced into the molten bath so as to obtain a wear-resistant, tribologically favorable running surface 1. Due to the process control arises during solidification due to the self-quenching and optionally additional cooling a fine crystalline structure.
  • crystals 3 are present with an approximately spherical contour, but at least with a rounded contour without sharp edges. The size of these crystals 3 should be a maximum of 50.0 microns and will be predominantly in a range between 5.0 microns and 20.0 microns.
  • As a harder material fully molten nickel-containing or tungsten-containing material can be alloyed into the cylinder surface 1.
  • a silicon-containing material is used. In this case, the laser-produced layer of the cylinder surface 1 after completion of Einleg réelle a share of 15 to 53 vol.% Silicon on.
  • a machining and / or honing machining is performed. It is provided that the cylinder surfaces 1 are honed.
  • the fine-crystalline layer requires no etching for exposure. Rather, now takes place a further mechanical processing by means of a finely graded hone.
  • the light metal matrix is reset, that is, the crystals 3 of the harder material are mechanically exposed and protrude as plateaus against the other surface. Due to the rounded contour of the crystals 3 they do not break out during honing. In addition, the crystals 3 are hardly abrasive due to this contour, so that the wear is low.
  • the height "H" of exposure of the crystals 3 of the harder material is at most 1.0 ⁇ m. Preferably, a range between 0.1 microns and 0.3 microns is used.
  • the cylinder surfaces 1 are finely structured by additional Recesses 4 are introduced into the surface 1.
  • elevations 5 can be configured directly next to the depressions 4.
  • the fine structure of the cylinder surface 1 has a depth "T" of a maximum of 2.0 microns. Preferably, a range between 0.1 microns and 0.5 microns is used.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Physics & Mathematics (AREA)
  • Geometry (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)

Claims (10)

  1. Procédé d'usinage de surfaces, en particulier de surfaces de glissement (1) de cylindres de moteurs à combustion interne comportant un carter de vilebrequin de cylindres composé d'un alliage de métal léger, dans lequel on a allié des particules d'une matière plus dure dans les surfaces de glissement (1) des cylindres, qui sont fondues au moyen d'un laser, et dans lequel la matrice de métal léger avec les particules de matière dure incorporées est ensuite usinée en au moins une opération par enlèvement de copeaux et/ou par honage, de telle manière que les surfaces de glissement (1) des cylindres soient d'abord honées et que l'on effectue ensuite un usinage mécanique au moyen d'un alésoir de honage fin, par lequel les cristaux (3) de la matière plus dure sont dégagés, caractérisé en ce que les particules de matière plus dure sont alliées de telle manière qu'il se forme des cristaux (3) ayant un contour pratiquement sphérique, mais au moins un contour arrondi.
  2. Procédé selon la revendication 1, caractérisé en ce que l'on effectue ensuite un autre usinage mécanique au moyen d'un alésoir de honage, dans lequel les surfaces de glissement (1) des cylindres sont finement structurées.
  3. Procédé selon la revendication 1, caractérisé en ce que la hauteur "H" du dégagement des cristaux (3) de la matière plus dure vaut au maximum 1,0 µm et se situe de préférence dans la plage comprise entre 0,1 µm et 0,3 µm.
  4. Procédé selon les revendications 1 ou 2, caractérisé en ce que la profondeur "T" de la structure fine de la surface de glissement (1) des cylindres vaut au maximum 2, 0 µm et se situe de préférence dans la plage comprise entre 0,1 µm et 0,5 µm.
  5. Procédé selon la revendication 1, caractérisé en ce que l'on utilise un alliage d'aluminium pour le carter de vïlebrequin des cylindres.
  6. Procédé selon la revendication 1, caractérisé en ce que l'on utilise une matière contenant du silicium entièrement fondue comme matière plus dure pour l'alliage dans la surface de glissement (1) des cylindres.
  7. Procédé selon la revendication 6, caractérisé en ce que la grosseur des cristaux de silicium vaut au maximum 50,0 µm et se situe de préférence dans la plage comprise entre 5,0 µm et 20,0 µm.
  8. Procédé selon les revendications 1 ou 6, caractérisé en ce que la couche de la surface de glissement (1) des cylindres, formée au moyen d'un laser, présente une teneur en silicium de 15 à 53 % en volume.
  9. Procédé selon la revendication 1, caractérisé en ce que l'on utilise une matière contenant du nickel entièrement fondue comme matière plus dure pour l'alliage dans la surface de glissement (1) des cylindres.
  10. Procédé selon la revendication 1, caractérisé en ce que l'on utilise une matière contenant du tungstène entièrement fondue comme matière plus dure pour l'alliage de la surface de glissement (1) des cylindres.
EP00122286A 1999-11-20 2000-10-20 Procédé d'usinage de surfaces, en particulier de surfaces de contact de cylindres de moteurs à combustion interne Revoked EP1103344B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19956306A DE19956306B4 (de) 1999-11-20 1999-11-20 Verfahren zum Bearbeiten von Oberflächen, insbesondere von Zylinderlaufflächen an Brennkraftmaschinen
DE19956306 1999-11-20

Publications (3)

Publication Number Publication Date
EP1103344A2 EP1103344A2 (fr) 2001-05-30
EP1103344A3 EP1103344A3 (fr) 2003-10-01
EP1103344B1 true EP1103344B1 (fr) 2008-01-02

Family

ID=7930021

Family Applications (1)

Application Number Title Priority Date Filing Date
EP00122286A Revoked EP1103344B1 (fr) 1999-11-20 2000-10-20 Procédé d'usinage de surfaces, en particulier de surfaces de contact de cylindres de moteurs à combustion interne

Country Status (3)

Country Link
EP (1) EP1103344B1 (fr)
AT (1) ATE382452T1 (fr)
DE (2) DE19956306B4 (fr)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE10119337C1 (de) * 2001-04-20 2003-02-06 Daimler Chrysler Ag Verfahren und Einrichtung zur Herstellung tribologischer Flächen
DE10323743B4 (de) * 2003-05-24 2007-01-18 Daimlerchrysler Ag Freilegemasse, Freilegeverfahren und Freilegevorrichtung
DE102005018277B4 (de) * 2005-04-14 2011-09-15 Elgan-Diamantwerkzeuge Gmbh & Co. Kg Verfahren zum Honen hartstoffpartikelverstärkter Oberflächen und Honwerkzeug
DE102007032915B4 (de) 2007-07-14 2021-11-25 Bayerische Motoren Werke Aktiengesellschaft Verfahren zum Herstellen einer Brennkraftmaschine und nach diesem Verfahren hergestellte Brennkraftmaschine

Family Cites Families (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE3435460A1 (de) * 1984-09-27 1986-04-10 M.A.N. Maschinenfabrik Augsburg-Nürnberg AG, 8000 München Verfahren zur herstellung von werkstuecken aus leichtmetall
DE3822169A1 (de) * 1988-06-30 1990-01-04 Kadia Diamant Verfahren zum freilegen von silizium-kristallen
DE3922378A1 (de) * 1989-07-07 1991-01-17 Audi Ag Verfahren zum herstellung verschleissfester oberflaechen an bauteilen aus einer aluminium-silicium-legierung
DE4438550C2 (de) * 1994-10-28 2001-03-01 Daimler Chrysler Ag Verfahren zur Herstellung einer in ein Kurbelgehäuse einer Hubkolbenmaschine eingegossenen Zylinderlaufbüchse aus einer übereutektischen Aluminium-Silizium-Legierung
DE19542892C2 (de) * 1995-11-17 2000-08-10 Nagel Masch Werkzeug Verfahren und Vorrichtung zum Honen von Kolbenlaufbahnen
DE19607774B4 (de) * 1996-03-01 2005-07-14 Nagel Maschinen- Und Werkzeugfabrik Gmbh Verfahren zum Honen von Innenflächen eines Zylinders und Zylinder
DE19627926A1 (de) * 1996-07-11 1998-01-15 Ks Aluminium Technologie Ag Verfahren zur Bearbeitung von Zylinderlaufflächen
DE19708402C1 (de) * 1997-03-01 1998-08-27 Daimler Benz Aerospace Ag Verschleißfeste Schicht für Leichtmetall-Bauteile einer Verbrennungskraftmaschine sowie Verfahren zu deren Herstellung
DE19711756A1 (de) * 1997-03-21 1998-09-24 Audi Ag Verfahren zum Beschichten von Oberflächen
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

Also Published As

Publication number Publication date
ATE382452T1 (de) 2008-01-15
DE50014890D1 (de) 2008-02-14
EP1103344A2 (fr) 2001-05-30
DE19956306B4 (de) 2010-02-11
DE19956306A1 (de) 2001-05-23
EP1103344A3 (fr) 2003-10-01

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