EP1771674A1 - Procede pour creer des bords resistant a l'usure, destines a un segment trapezoidal pour moteur a combustion interne - Google Patents

Procede pour creer des bords resistant a l'usure, destines a un segment trapezoidal pour moteur a combustion interne

Info

Publication number
EP1771674A1
EP1771674A1 EP05758922A EP05758922A EP1771674A1 EP 1771674 A1 EP1771674 A1 EP 1771674A1 EP 05758922 A EP05758922 A EP 05758922A EP 05758922 A EP05758922 A EP 05758922A EP 1771674 A1 EP1771674 A1 EP 1771674A1
Authority
EP
European Patent Office
Prior art keywords
ring
layer
grinding
nitrided
flanks
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Withdrawn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
EP05758922A
Other languages
German (de)
English (en)
Inventor
Kurt Maier
Jose Manoel Martins Leites
Nuno Machado
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.)
Mahle GmbH
Original Assignee
Mahle 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 Mahle GmbH filed Critical Mahle GmbH
Publication of EP1771674A1 publication Critical patent/EP1771674A1/fr
Withdrawn legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C14/00—Coating by vacuum evaporation, by sputtering or by ion implantation of the coating forming material
    • C23C14/02—Pretreatment of the material to be coated
    • C23C14/024—Deposition of sublayers, e.g. to promote adhesion of the coating

Definitions

  • the invention relates to a method for producing wear-resistant flanks for a trapezoidal ring for internal combustion engines, in which a rectangular ring with an inner and an outer circumferential surface and an upper and lower flank is first formed from a steel strip with a rectangular cross-section as the base material, which is then by means of a nitriding process Nitrided on all sides and subsequently brought into its final shape and geometry by machining the surfaces, whereby the machining reveals the base material on the flanks
  • Piston rings with a trapezoidal cross-section - ring height larger on the outer circumferential surface than on the inner circumferential surface - are preferably used as a top ring in diesel engines, the associated piston ring groove also being trapezoidal in shape.
  • Diesel motors tend to deposit hard carbon-containing residues in the first-uppermost- piston ring groove, which The trapezoidal design of the piston rings and the piston ring groove generally prevent the piston rings from seizing and thus ensure the sealing function.
  • the manufacturing method according to the invention creates wear-resistant ring flanks which have significantly less frictional wear in engine operation compared to the prior art Generating a nitride layer on the ring flanks with a uniform nitriding depth also producing uniformly high hardness values so that no damage to the ring function affecting the ring function occurs along the circumference of the ring flanks. Micro-welding between the piston ring and piston is also effectively prevented
  • FIG. 1 shows a method for producing trapezoidal rings according to the prior art
  • FIG. 2 shows a manufacturing method for trapezoidal rings according to the invention
  • FIG. 3 shows the location-dependent ring flank wear according to the prior art and the method according to the invention
  • a piston ring with an inner circumferential surface 5a and an outer circumferential surface 5b and an upper ring flank 3a / b and lower ring flank 4a / b is first formed from a non-nitrided martensitic steel strip 1 with a rectangular cross-section using known devices, as shown in FIG.
  • the nitride layer consists of a diffusion layer and a connecting layer, whereby the nitriding hardness depth in the diffusion layer can be up to 200 ⁇ m.
  • the connecting layer has a hard HVO 05 of 700 with a layer thickness of approx. 20 ⁇ m.
  • the steel strip 1 has a chromium content of between 12% and 17% for the formation of hard chromium nitrides the nitrided piston ring is subjected to another slight grinding or lapping process without flank machining, optionally to further improve the wear properties by a PVD process (physical vapor deposition) known per se, chromium or chromium nitride layer can be applied to the preferably lower nitrided ring flank, since in particular at the trapezoidal rings produced according to the prior art according to FIG. 1 has shown the greatest frictional wear there
  • PVD process physical vapor deposition
  • a chromium nitride or manganese phosphate layer between 1-3 ⁇ m with a hardness between 1200-1400 HVO, 05 is subsequently reduced by a deposition on the ring flanks by means of the PVD process to further reduce the Frictional wear is applied, and the chrome layer can also be deposited galvanically
  • the piston rings in particular the nitrided ring flanks, are finished by grinding a maximum of a quarter of the total it- ⁇ d layer, whereby the connecting layer (white layer) formed during nitriding is removed
  • the method according to the invention brings about a significant reduction in fretting on the ring flanks compared to the prior art

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)

Abstract

L'invention concerne un procédé pour créer des bords résistant à l'usure, destinés à un segment trapézoïdal pour moteur à combustion interne. L'objectif de l'invention est d'empêcher, dans une large mesure, l'apparition de dégradations des bords de segments lors du fonctionnement du moteur. A cet effet, le procédé selon l'invention consiste à former un segment rectangulaire présentant une face périphérique intérieure et une face périphérique extérieure ainsi qu'un bord supérieur et un bord inférieur, à partir d'un feuillard d'acier de section rectangulaire, servant de matériau de base. Ce procédé est caractérisé par les étapes de production suivantes: polissage parallèle des bords et polissage de la face périphérique extérieure pour obtenir le profil prévu et brossage de la face périphérique interne; polissage des bords supérieur et inférieur (3a, 4a) pour former le segment trapézoïdal de sorte que le segment de piston présente, au niveau de sa face périphérique extérieure, des bords encore parallèles (3b, 4b) servant de face d'empilement; nitruration complète des surfaces du segment de piston au moyen d'un processus de nitruration gazeuse (GNS) pour former une couche de nitrure; profilage du segment de piston nitruré par polissage et rodage sans usinage des bords nitrurés du segment de piston; empilage des segments de piston par l'intermédiaire de leurs bords parallèles avec précontrainte axiale pour former un empilement et application d'une couche d'usure sur la face périphérique extérieure des segments de piston selon un procédé PVD; polissage de la couche de nitruration des bords, les segments n'étant plus empilés, de sorte qu'au maximum un quart de l'épaisseur totale de la couche de nitruration soit éliminé.
EP05758922A 2004-06-11 2005-06-10 Procede pour creer des bords resistant a l'usure, destines a un segment trapezoidal pour moteur a combustion interne Withdrawn EP1771674A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004028487.3A DE102004028487B4 (de) 2004-06-11 2004-06-11 Verfahren zur Herstellung verschleissfester Flanken für einen Trapezring für Verbrennungsmotoren
PCT/DE2005/001044 WO2005121609A1 (fr) 2004-06-11 2005-06-10 Procede pour creer des bords resistant a l'usure, destines a un segment trapezoidal pour moteur a combustion interne

Publications (1)

Publication Number Publication Date
EP1771674A1 true EP1771674A1 (fr) 2007-04-11

Family

ID=34972120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05758922A Withdrawn EP1771674A1 (fr) 2004-06-11 2005-06-10 Procede pour creer des bords resistant a l'usure, destines a un segment trapezoidal pour moteur a combustion interne

Country Status (8)

Country Link
US (1) US7572344B2 (fr)
EP (1) EP1771674A1 (fr)
JP (1) JP2008501911A (fr)
CN (1) CN100470039C (fr)
BR (1) BRPI0511974B1 (fr)
DE (1) DE102004028487B4 (fr)
HK (1) HK1091532A1 (fr)
WO (1) WO2005121609A1 (fr)

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DE102006003480B3 (de) * 2006-01-25 2007-07-05 Federal-Mogul Burscheid Gmbh Kolbenring
DE102007007963B4 (de) 2007-02-17 2012-05-16 Federal-Mogul Burscheid Gmbh Kolbenring
JP5099910B2 (ja) * 2008-08-29 2012-12-19 日本ピストンリング株式会社 内燃機関用オイルリング
DE102009052587A1 (de) * 2009-11-10 2011-05-12 Federal-Mogul Burscheid Gmbh Kolbenring
CN102741535B (zh) * 2010-01-29 2014-09-10 日本活塞环株式会社 活塞环
DE102011014483B3 (de) 2011-03-19 2012-05-10 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung von Kolbenringen
BRPI1103935A2 (pt) * 2011-08-17 2013-08-06 Mahle Metal Leve Sa anel de pistço
DE102011120591A1 (de) * 2011-12-08 2013-06-13 Federal-Mogul Burscheid Gmbh Verfahren zur Bearbeitung von Kolbenringen
US20130154196A1 (en) * 2011-12-14 2013-06-20 Mahle International Gmbh Piston ring formed from ring blank
CN102418620A (zh) * 2011-12-22 2012-04-18 江铃汽车股份有限公司 一种pvd铬基陶瓷复合镀层的活塞环
EP2610532A1 (fr) * 2011-12-30 2013-07-03 FPT Industrial S.p.A. Unité d'étanchéité de piston de moteur à combustion interne
DE102012004760B4 (de) 2012-03-08 2013-10-31 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines Trapezkolbenrings sowie Trapezkolbenring
DE102012204156A1 (de) * 2012-03-16 2013-09-19 Federal-Mogul Burscheid Gmbh Kolbenring mit Chrom-Feststoffpartikel-Verschleißschutzschicht und korrosionsbeständiger Flankenfläche
CN102634794A (zh) * 2012-05-09 2012-08-15 余姚凯登机电数控有限公司 活塞装置及其制造工艺
DE102012020757A1 (de) 2012-10-23 2014-05-08 Mahle International Gmbh Bauteil mit einer Beschichtung und Verfahren zu seiner Herstellung
DE102012020756A1 (de) 2012-10-23 2014-04-24 Mahle International Gmbh Bauteil mit einer Beschichtung und Verfahren zu seiner Herstellung
CN103978346A (zh) * 2014-05-20 2014-08-13 徐州君涛工贸有限公司 一种活塞环的制作工艺
US11168392B2 (en) 2015-05-26 2021-11-09 Oerlikon Surface Solutions Ag, Pfähhikon Wear and/or friction reduction by using molybdenum nitride based coatings
JP6139605B2 (ja) * 2015-07-17 2017-05-31 株式会社リケン ピストンリング及びその製造方法
DE102017100648A1 (de) * 2017-01-13 2018-07-19 Federal-Mogul Burscheid Gmbh Kolbenring und verfahren zur herstellung
EP3546151A1 (fr) 2018-03-27 2019-10-02 Braun GmbH Dispositif de soins personnels
EP3546150B1 (fr) 2018-03-27 2021-10-27 Braun GmbH Dispositif de soins personnels
EP3546149B1 (fr) 2018-03-27 2021-05-12 Braun GmbH Dispositif d'épilation
EP3546148B1 (fr) 2018-03-27 2022-01-12 Braun GmbH Dispositif de soins personnels
CN108642443A (zh) * 2018-05-11 2018-10-12 湖南菲尔姆真空设备有限公司 一种抗油烟沾附的氮化铬不锈钢复合材料及其制备方法
DE102020207265A1 (de) 2020-06-10 2021-12-16 Mahle International Gmbh Verfahren zum Beschichten eines Kolbenrings mit einer Chromnitridschicht
CN112377614B (zh) * 2020-11-11 2023-02-24 马勒汽车技术（中国）有限公司 用于发动机的活塞环及活塞环的加工方法
CN114483362B (zh) * 2020-11-13 2024-05-28 纳峰真空镀膜（上海）有限公司 活塞环及制造方法
EP4310370A1 (fr) * 2022-07-19 2024-01-24 MAHLE International GmbH Segment de piston

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JPH0550241A (ja) * 1991-08-19 1993-03-02 Mitsubishi Heavy Ind Ltd 極厚材の狭開先溶接方法
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Also Published As

Publication number Publication date
CN100470039C (zh) 2009-03-18
US7572344B2 (en) 2009-08-11
DE102004028487A1 (de) 2006-01-12
JP2008501911A (ja) 2008-01-24
BRPI0511974A (pt) 2008-01-22
HK1091532A1 (en) 2007-01-19
BRPI0511974B1 (pt) 2019-11-12
CN1842670A (zh) 2006-10-04
WO2005121609A1 (fr) 2005-12-22
DE102004028487B4 (de) 2018-11-15
US20070252338A1 (en) 2007-11-01

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