WO1995023305A1 - Procede de fabrication de racleurs d'huile - Google Patents

Procede de fabrication de racleurs d'huile Download PDF

Info

Publication number
WO1995023305A1
WO1995023305A1 PCT/SE1995/000160 SE9500160W WO9523305A1 WO 1995023305 A1 WO1995023305 A1 WO 1995023305A1 SE 9500160 W SE9500160 W SE 9500160W WO 9523305 A1 WO9523305 A1 WO 9523305A1
Authority
WO
WIPO (PCT)
Prior art keywords
ring
scraper
bands
face
oil scraper
Prior art date
Application number
PCT/SE1995/000160
Other languages
English (en)
Inventor
Hans Sundén
Original Assignee
Daros Holding Ab
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 Daros Holding Ab filed Critical Daros Holding Ab
Priority to AU18652/95A priority Critical patent/AU1865295A/en
Publication of WO1995023305A1 publication Critical patent/WO1995023305A1/fr

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23P—METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS
    • B23P15/00—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass
    • B23P15/06—Making specific metal objects by operations not covered by a single other subclass or a group in this subclass piston rings from one piece
    • 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
    • F16J9/06—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging
    • F16J9/061—Piston-rings, e.g. non-metallic piston-rings, seats therefor; Ring sealings of similar construction using separate springs or elastic elements expanding the rings; Springs therefor ; Expansion by wedging using metallic coiled or blade springs
    • F16J9/062—Coiled spring along the entire circumference
    • 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
    • F16J9/12—Details
    • F16J9/20—Rings with special cross-section; Oil-scraping rings
    • F16J9/203—Oil-scraping rings

Definitions

  • the subject invention concerns a method of manu- facturing oil scraper rings intended for use with the pistons in internal combustion engines.
  • a compression ring should possess satisfactory wearing strength as well as satisfactory sliding characteristics with regard to its reciprocating motion inside a cylinder bore.
  • the criteria of a well functioning oil scraper ring reside in a combination of high wearing strength and a suitable profile configuration, i.e. the scraper ring should be fitted with scraping edges preventing oil from the crankcase underneath from splashing past the scraper ring while at the same time an oil film should be maintained in contact with the cylinder wall.
  • scraper rings have been configured in many various ways without, however, being able to exhibit satisfactory results after a longer period of use, as will be explained in more detail in the following.
  • Fig. 1 is a cross-sectional view through an oil scraper ring of a prior-art design
  • Fig. 2 is a similar cross-sectional view through an oil scraper ring in accordance with a modified prior-art embodiment
  • Figs. 3 and 4 are cross-sectional views through oil scraper rings during different stages of manufacture in the performance of the method in accordance with the invention.
  • Fig. 1 is a cross-sectional view through a scraper ring which is manufactured in the conventional way from cast iron.
  • the ring is cast in a mould, the inner ring face being configured to serve as a seat on which rests an annular spring 2, as indicated in dash-and-dot lines, whereafter the external face is machined in a lathe to form scraping edges 3, 4, the purpose of which is to slide in engagement with the cylinder wall and in doing so scrape off excess oil splashes from the crankcase.
  • the scraper edges 3, 4 are formed with undercut faces 5 and 6, respectively.
  • a ring 13 is initially manufactured in the conventional manner from cast iron in a mould.
  • the material along two bands 15, 16 extending circumferentially around the ring 13 is then submitted to a material re-fusion treatment, the re-fusion being effected to approximately the depth appearing from Fig. 3.
  • the re-fusion preferably is performed with the aid of a laser beam.
  • ledeburite The structure of the re-fused material becomes stable (known as ledeburite) and the hardness increases considerably (750 HV) and could be compared to that of chromium (900 HV).

Landscapes

  • Engineering & Computer Science (AREA)
  • General Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Sealing Devices (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Abstract

L'invention concerne un procédé de fabrication de racleurs d'huile pour pistons de moteurs à combustion interne, consistant d'abord à produire le racleur à partir de fonte de moulage. Le matériau du racleur (13) est ensuite refondu sur sa face externe (14) destinée à servir de surface de glissement, la refusion s'effectuant le long d'une paire de bandes (15,16) s'étendant autour du racleur (13) en vue d'augmenter la dureté du matériau dans les zones des bandes. On soumet ensuite le racleur à une opération d'usinage des deux côtés des bandes (15,16) sur un tour, de sorte que les bords du racleur (17,18) soient formés à partir desdites bandes. La refusion des bandes (15,16) s'effectue, de préférence, au moyen d'un faisceau laser.
PCT/SE1995/000160 1994-02-23 1995-02-16 Procede de fabrication de racleurs d'huile WO1995023305A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AU18652/95A AU1865295A (en) 1994-02-23 1995-02-16 A method of manufacturing oil scraper rings

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
SE9400615A SE509304C2 (sv) 1994-02-23 1994-02-23 Förfarande för framställning av oljeskrapringar
SE9400615-2 1994-02-23

Publications (1)

Publication Number Publication Date
WO1995023305A1 true WO1995023305A1 (fr) 1995-08-31

Family

ID=20393047

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/SE1995/000160 WO1995023305A1 (fr) 1994-02-23 1995-02-16 Procede de fabrication de racleurs d'huile

Country Status (3)

Country Link
AU (1) AU1865295A (fr)
SE (1) SE509304C2 (fr)
WO (1) WO1995023305A1 (fr)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960709A1 (de) * 1999-12-16 2001-09-06 Federal Mogul Burscheid Gmbh Verfahren zur Herstellung eines Ölabstreifkolbenringes, sowie danach hergestellter Ölabstreifkolbenring
CN100353047C (zh) * 2004-12-23 2007-12-05 江苏仪征威龙活塞环有限公司 活塞环加工工艺
DE102007060091A1 (de) 2007-12-13 2009-06-25 Federal-Mogul Burscheid Gmbh Ölabstreifring
EP2479460A1 (fr) 2011-01-21 2012-07-25 Burckhardt Compression AG Bague d'étalement d'huile
EP2578908A4 (fr) * 2010-06-04 2015-07-01 Nippon Piston Ring Co Ltd Bague de lubrification pour moteur à combustion interne
IT201800007888A1 (it) * 2018-08-06 2020-02-06 Qin Srl Anello di tenuta per pistoni di motori endotermici, in particolare anello raschia-olio

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435502A (en) * 1966-05-26 1969-04-01 Hastings Mfg Co Piston ring and method of manufacture thereof
DE3717297A1 (de) * 1987-05-22 1988-12-01 Mahle Gmbh Kolbenring aus gusseisen als einzigem material mit in seiner aeusseren umfangsflaeche nur in einem bereich weisserstarrtem gusseisen

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3435502A (en) * 1966-05-26 1969-04-01 Hastings Mfg Co Piston ring and method of manufacture thereof
DE3717297A1 (de) * 1987-05-22 1988-12-01 Mahle Gmbh Kolbenring aus gusseisen als einzigem material mit in seiner aeusseren umfangsflaeche nur in einem bereich weisserstarrtem gusseisen

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19960709A1 (de) * 1999-12-16 2001-09-06 Federal Mogul Burscheid Gmbh Verfahren zur Herstellung eines Ölabstreifkolbenringes, sowie danach hergestellter Ölabstreifkolbenring
CN100353047C (zh) * 2004-12-23 2007-12-05 江苏仪征威龙活塞环有限公司 活塞环加工工艺
DE102007060091A1 (de) 2007-12-13 2009-06-25 Federal-Mogul Burscheid Gmbh Ölabstreifring
EP2578908A4 (fr) * 2010-06-04 2015-07-01 Nippon Piston Ring Co Ltd Bague de lubrification pour moteur à combustion interne
CN103380319A (zh) * 2011-01-21 2013-10-30 伯克哈特压缩机股份公司 刮油环
CN103328867A (zh) * 2011-01-21 2013-09-25 伯克哈特压缩机股份公司 刮油环
WO2012098266A1 (fr) 2011-01-21 2012-07-26 Burckhardt Compression Ag Segment racleur d'huile
EP2479460A1 (fr) 2011-01-21 2012-07-25 Burckhardt Compression AG Bague d'étalement d'huile
US9234479B2 (en) 2011-01-21 2016-01-12 Burckhardt Compression Ag Oil scraper ring
CN103328867B (zh) * 2011-01-21 2016-01-13 伯克哈特压缩机股份公司 刮油环
CN103380319B (zh) * 2011-01-21 2016-12-14 伯克哈特压缩机股份公司 刮油环
US9810175B2 (en) 2011-01-21 2017-11-07 Burckhardt Compression Ag Oil scraper ring
IT201800007888A1 (it) * 2018-08-06 2020-02-06 Qin Srl Anello di tenuta per pistoni di motori endotermici, in particolare anello raschia-olio
WO2020031088A1 (fr) * 2018-08-06 2020-02-13 Qin S.R.L. Anneau pour pistons de moteur endothermiques, en particulier anneau racleur/d'huile

Also Published As

Publication number Publication date
SE9400615D0 (sv) 1994-02-23
SE9400615L (sv) 1995-08-24
SE509304C2 (sv) 1999-01-11
AU1865295A (en) 1995-09-11

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