EP2118533A1 - Segment de piston - Google Patents

Segment de piston

Info

Publication number
EP2118533A1
EP2118533A1 EP08706829A EP08706829A EP2118533A1 EP 2118533 A1 EP2118533 A1 EP 2118533A1 EP 08706829 A EP08706829 A EP 08706829A EP 08706829 A EP08706829 A EP 08706829A EP 2118533 A1 EP2118533 A1 EP 2118533A1
Authority
EP
European Patent Office
Prior art keywords
piston ring
layer
ring according
pvd
cover layer
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.)
Ceased
Application number
EP08706829A
Other languages
German (de)
English (en)
Inventor
Johannes Esser
Frank Münchow
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.)
Federal Mogul Burscheid GmbH
Original Assignee
Federal Mogul Burscheid 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 Federal Mogul Burscheid GmbH filed Critical Federal Mogul Burscheid GmbH
Publication of EP2118533A1 publication Critical patent/EP2118533A1/fr
Ceased legal-status Critical Current

Links

Classifications

    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F16—ENGINEERING ELEMENTS AND UNITS; GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVE FUNCTIONING OF MACHINES OR INSTALLATIONS; THERMAL INSULATION IN GENERAL
    • F16J—PISTONS; CYLINDERS; SEALINGS
    • F16J9/00—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction
    • F16J9/26—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction characterised by the use of particular materials

Definitions

  • the invention relates to a piston ring, having a base body which has a substantially circumferential tread, an upper and a lower flank surface and an inner peripheral surface.
  • DE 102 07 148 A1 discloses a piston ring comprising a base material made of stainless steel, the base material having an upper and a lower flank surface, a running surface and an inner peripheral surface. Each of these surfaces includes a nitride layer formed thereon, wherein each nitride layer is first formed to have a junction layer and a diffusion layer, then exposing the diffusion layer of the tread by removing the compound layer, and then exposing the exposed diffusion layer to an iron plating deposition layer Hard ceramic is formed.
  • a known way of producing small running edges is the use of full or one-sided atnerten rings, however, bring the disadvantage that a certain part of the tread is not provided with a wear protection layer and it comes in this area again and again to so-called scorching.
  • the aim of the subject invention is to develop a piston ring to the effect that when optimizing the used wear protective layer, especially in the area of the vulnerable lower running edge, eruptions of the wear protection layer are largely avoided.
  • a piston ring having a base body which has a substantially circumferential tread, an upper and a lower flank surface, and an inner circumferential surface, wherein the transition region of the tread at least in the lower flank surface with an edge ⁇ 0, 1 mm provided and the tread is at least provided with at least one PVD cover layer ⁇ 10 microns.
  • PVD Physical Vapor Deposition
  • the deposited coating material is present as an ionized particle stream.
  • the PVD cover layer is based on nitrides of the elements IV b to VI b of the periodic table.
  • the elements Al and / or Si and / or C and / or O may be added.
  • the edge can advantageously be produced by mechanical processing. Especially with steel rings made of drawn steel profiles always rounded edges are given, which are subjected to a mechanical processing only in retrospect, to bring about the desired effect in the transition region of the tread into the respective flank surface.
  • PVD cover layers are formed on the basis of CrN and / or CrON.
  • DLC cover layers diamond like carbon
  • piston rings made of cast or steel materials, in particular with a lower edge ⁇ 0, 1 mm provided with a relatively thin wear protection layer.
  • this wear protection layer can be an all-round nitriding treatment of the piston ring, although other known methods (galvanic or thermal coating) are also conceivable.
  • the actual PVD cover layer can be applied in a thickness ⁇ 10 microns.
  • PVD multilayer coatings in contrast to the prior art, in the case of a specifically generated transition region from the tread, at least into the lower flank surface, in conjunction with at least the PVD cover layer, a break-free and crack-free coated edge can be produced. By this measure, in analogy to an uncoated ring, the oil balance of the internal combustion engine can be positively influenced.
  • Figure 1 piston ring in cross-section, with an all-round wear protection layer and a PVD cover layer in the tread area;
  • Figure 2 piston ring in cross-section, with a PVD cover layer in the tread area;
  • FIG. 3 shows the lower edge region according to FIG. 2.
  • FIG. 1 shows a piston ring 1 in cross section.
  • the one main body made of steel, steel or gray cast iron having piston ring 1 includes a tread 2, an upper 3 and a lower flank surface 4 and an inner peripheral surface 5.
  • the piston ring 1 in the region of its surfaces 2,3,4,5 be provided with a wear protection layer 6 produced by nitriding.
  • This wear protection layer 6 should have a thickness of 10 microns in this example.
  • a PVD covering layer 7 formed on the basis of CrN is deposited on this wear protection layer 6, which has a layer thickness of 8 ⁇ m in this example.
  • wear protection layer 6 can also thermally or galvanically produced layers are used, wherein thermal layers are advantageously applied only to the tread 2, while galvanic layers on the tread 2, but also on the flank surface 3 and 4, can be gebacht.
  • the PVD cover layer 7 may also consist of alternative materials, such as CrON. Depending on the application, the person skilled in the art will specify the suitable material combination as well as the necessary layer thicknesses.
  • the transition region 8 of the tread 2 in the lower edge surface 4 is formed almost sharp-edged.
  • FIG. 2 shows a piston ring 1 'which, in analogy to FIG. 1, has a running surface 2', an upper flank surface 3 ', a lower flank surface 4' and an inner circumferential surface 5 '.
  • a PVD covering layer T based on CrON which has a thickness of 10 ⁇ m in this example, is deposited directly on the tread 2 '.
  • the piston ring 1 ' consists in this example of steel, wherein the transition region 8' of the tread 2 'in the lower flank surface 4' is provided with an edge of at most 0, 1 mm.
  • alternative materials can also be used to generate the PVD cover layer 7 '.
  • FIG. 3 shows a detail of FIG. 2.
  • the edge produced here should be - as indicated - on the tread side and flank side maximum 0, 1 mm.

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
  • Physical Vapour Deposition (AREA)

Abstract

Segment de piston, avec un corps de base qui présente une face de portée sensiblement entourante, une face de flanc supérieure, une face de flanc inférieure et une face périphérique intérieure. La région de transition de la face de portée au moins dans la face de flanc inférieure est pourvue d'une arête = 0,1 mm, et la face de portée est au moins pourvue d'au moins une couche de recouvrement déposée en phase gazeuse d'une épaisseur inférieure à 10 µm.
EP08706829A 2007-02-17 2008-01-30 Segment de piston Ceased EP2118533A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007007961.5A DE102007007961C5 (de) 2007-02-17 2007-02-17 Kolbenring
PCT/DE2008/000163 WO2008098547A1 (fr) 2007-02-17 2008-01-30 Segment de piston

Publications (1)

Publication Number Publication Date
EP2118533A1 true EP2118533A1 (fr) 2009-11-18

Family

ID=39365816

Family Applications (1)

Application Number Title Priority Date Filing Date
EP08706829A Ceased EP2118533A1 (fr) 2007-02-17 2008-01-30 Segment de piston

Country Status (5)

Country Link
US (1) US20100019458A1 (fr)
EP (1) EP2118533A1 (fr)
JP (1) JP2010518341A (fr)
DE (1) DE102007007961C5 (fr)
WO (1) WO2008098547A1 (fr)

Families Citing this family (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102010047961A1 (de) 2010-10-08 2012-04-12 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines Kolbenrings
US20130328274A1 (en) 2011-02-28 2013-12-12 Nippon Piston Ring Co., Ltd. Piston ring
DE102011014483B3 (de) 2011-03-19 2012-05-10 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung von Kolbenringen
DE102011084052B4 (de) * 2011-10-05 2024-05-29 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit scharfer Ölabstreifkante
CN104080931B (zh) 2011-11-30 2016-01-20 费德罗-莫格尔公司 用于活塞环应用的高模量耐磨性灰口铸铁
DE102012004760B4 (de) * 2012-03-08 2013-10-31 Federal-Mogul Burscheid Gmbh Verfahren zur Herstellung eines Trapezkolbenrings sowie Trapezkolbenring
DE102015009587B4 (de) * 2015-07-24 2018-11-22 Federal-Mogul Burscheid Gmbh Kompressionskolbenring
DE102016108088B4 (de) * 2016-04-20 2018-05-09 Federal-Mogul Burscheid Gmbh Beschichteter Kolbenring mit Schutzschicht
CN106194484A (zh) * 2016-07-13 2016-12-07 邹敏 一种梯面内阶pvd扭曲活塞环
DE102017221606A1 (de) * 2017-11-30 2019-06-06 Federal-Mogul Burscheid Gmbh Kolbenring

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276176A (en) * 1993-03-15 1994-09-21 Teikoku Piston Ring Co Ltd Hard coating material based on chromium nitride and sliding member coated therewith
WO2006125683A1 (fr) * 2005-05-26 2006-11-30 Nv Bekaert Sa Bague de piston pourvue d'un revetement multicouche dur

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DE2135338B2 (de) * 1971-07-15 1975-08-21 Karl Schmidt Gmbh, 7107 Neckarsulm Kolbenring fuer kolben von verbrennungskraftmaschinen
GB1441961A (en) * 1973-03-21 1976-07-07 Wellworthy Ltd Piston rings
JPH0610454B2 (ja) * 1984-10-05 1994-02-09 株式会社リケン ピストンリング
JPS63289373A (ja) * 1987-05-21 1988-11-25 Hitachi Metals Ltd スチ−ル製ピストンリング
JPH05280642A (ja) * 1991-06-04 1993-10-26 Riken Corp 摺動部材
US5292381A (en) * 1991-07-24 1994-03-08 Nippon Piston Ring Co., Ltd. Piston ring and process for manufacturing the same
JP3266439B2 (ja) * 1994-12-29 2002-03-18 帝国ピストンリング株式会社 ピストンリングおよびその製造方法
JP3885375B2 (ja) * 1997-09-30 2007-02-21 帝国ピストンリング株式会社 ピストンリング
DE19825860A1 (de) * 1998-06-10 1999-12-16 Elgan Diamantwerkzeuge Gmbh & Kolbenring und seine Verwendung
DE10011917C2 (de) * 2000-03-11 2003-06-18 Federal Mogul Burscheid Gmbh Kolbenring mit Verschleissschutzschicht sowie Verschleissschutzschicht für einen Kolbenring
JP4392485B2 (ja) * 2001-02-27 2010-01-06 日本ピストンリング株式会社 ピストンリング
DE10207078B4 (de) * 2002-02-20 2004-02-12 Federal-Mogul Burscheid Gmbh Kolbenring mit einer PVD-Beschichtung
JP4233015B2 (ja) 2002-08-27 2009-03-04 日本ピストンリング株式会社 ピストンリング
JP4973971B2 (ja) * 2003-08-08 2012-07-11 日産自動車株式会社 摺動部材
DE10359802B3 (de) * 2003-12-19 2005-03-31 Federal-Mogul Burscheid Gmbh Kolbenring sowie Verfahren zur Herstellung desselben
EP1564312B1 (fr) * 2004-02-12 2018-12-05 Hitachi Tool Engineering Ltd. Couche dure, procédé de sa production et outil revêtu d'une couche dure
DE102004053454B4 (de) * 2004-11-05 2006-07-27 Federal-Mogul Burscheid Gmbh Kolbenring, insbesondere Ölabstreifring
JP2006152981A (ja) * 2004-12-01 2006-06-15 Riken Corp 溶射ピストンリング及びその製造方法
JP5013445B2 (ja) 2005-03-09 2012-08-29 株式会社豊田中央研究所 ピストンリング、それを備えたピストンおよびそれらの使用方法
JP4267588B2 (ja) * 2005-03-30 2009-05-27 日本ピストンリング株式会社 ピストンリング
JP4918656B2 (ja) * 2005-12-21 2012-04-18 株式会社リケン 非晶質硬質炭素皮膜
JP2008163430A (ja) * 2006-12-28 2008-07-17 Jtekt Corp 高耐食性部材およびその製造方法
GB2450933A (en) * 2007-07-13 2009-01-14 Hauzer Techno Coating Bv Method of providing a hard coating

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB2276176A (en) * 1993-03-15 1994-09-21 Teikoku Piston Ring Co Ltd Hard coating material based on chromium nitride and sliding member coated therewith
WO2006125683A1 (fr) * 2005-05-26 2006-11-30 Nv Bekaert Sa Bague de piston pourvue d'un revetement multicouche dur

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
See also references of WO2008098547A1 *

Also Published As

Publication number Publication date
DE102007007961A1 (de) 2008-08-21
DE102007007961C5 (de) 2015-08-13
WO2008098547A1 (fr) 2008-08-21
JP2010518341A (ja) 2010-05-27
US20100019458A1 (en) 2010-01-28
DE102007007961B4 (de) 2012-05-16

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