GB1312997A - Apex seal for rotary piston engine and method of producing same - Google Patents

Apex seal for rotary piston engine and method of producing same

Info

Publication number
GB1312997A
GB1312997A GB4366370A GB4366370A GB1312997A GB 1312997 A GB1312997 A GB 1312997A GB 4366370 A GB4366370 A GB 4366370A GB 4366370 A GB4366370 A GB 4366370A GB 1312997 A GB1312997 A GB 1312997A
Authority
GB
United Kingdom
Prior art keywords
blank
cast iron
hardness
apex seal
piston engine
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.)
Expired
Application number
GB4366370A
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.)
Mazda Motor Corp
Yoshiwa Kogyo KK
Original Assignee
Yoshiwa Kogyo KK
Toyo Kogyo Co Ltd
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
Priority claimed from JP7291369A external-priority patent/JPS4825289B1/ja
Priority claimed from JP7291269A external-priority patent/JPS4825290B1/ja
Application filed by Yoshiwa Kogyo KK, Toyo Kogyo Co Ltd filed Critical Yoshiwa Kogyo KK
Publication of GB1312997A publication Critical patent/GB1312997A/en
Expired legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C21—METALLURGY OF IRON
    • C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06—Surface hardening
    • C21D1/09—Surface hardening by direct application of electrical or wave energy; by particle radiation
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F01—MACHINES OR ENGINES IN GENERAL; ENGINE PLANTS IN GENERAL; STEAM ENGINES
    • F01C—ROTARY-PISTON OR OSCILLATING-PISTON MACHINES OR ENGINES
    • F01C19/00—Sealing arrangements in rotary-piston machines or engines
    • F01C19/005—Structure and composition of sealing elements such as sealing strips, sealing rings and the like; Coating of these elements
    • F—MECHANICAL ENGINEERING; LIGHTING; HEATING; WEAPONS; BLASTING
    • F05—INDEXING SCHEMES RELATING TO ENGINES OR PUMPS IN VARIOUS SUBCLASSES OF CLASSES F01-F04
    • F05C—INDEXING SCHEME RELATING TO MATERIALS, MATERIAL PROPERTIES OR MATERIAL CHARACTERISTICS FOR MACHINES, ENGINES OR PUMPS OTHER THAN NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES
    • F05C2201/00—Metals
    • F05C2201/04—Heavy metals
    • F05C2201/0433—Iron group; Ferrous alloys, e.g. steel
    • F05C2201/0436—Iron
    • F05C2201/0439—Cast iron
    • F05C2201/0442—Spheroidal graphite cast iron, e.g. nodular iron, ductile iron

Landscapes

  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Thermal Sciences (AREA)
  • Physics & Mathematics (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • General Engineering & Computer Science (AREA)
  • Heat Treatment Of Articles (AREA)
  • Sealing Devices (AREA)
  • Laser Beam Processing (AREA)

Abstract

1312997 Making rotary seals TOYO KOGYO KK and YOSHIWA KOGYO KK 11 Sept 1970 [13 Sept 1969(2)] 43663/70 Headings B3A and B3V [Also in Division F1] A method of making a cast iron apex seal for a rotary piston engine comprises preparing an elongate cast iron blank 1 having a width equal to or slightly larger than that of the desired apex seal, rapidly melting a portion 5 of the blank, quickly cooling and solidifying the molten portion and subjecting the blank to final working. By this method a very hard wearing surface, which has a chilled structure and contains a large proportion of cementite, is formed. This portion may have a hardness of up to 900 Vickers Hardness while the hardness of the lower part which may be at least one third of the height of the seal remains unaffected, i.e. about 370 Vickers Harness. An electron beam 3 is used to melt the surface, the beam being oscillated as the blank travels beneath it so that it follows a trace 4. Alternatively a laser beam, plasma, arc or other heating means may be used. The blank may be heat treated for stress relief prior to the final working operation, which comprises final finish cutting or grinding. The cast iron may be acicular cast iron.
GB4366370A 1969-09-13 1970-09-11 Apex seal for rotary piston engine and method of producing same Expired GB1312997A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP7291369A JPS4825289B1 (en) 1969-09-13 1969-09-13
JP7291269A JPS4825290B1 (en) 1969-09-13 1969-09-13

Publications (1)

Publication Number Publication Date
GB1312997A true GB1312997A (en) 1973-04-11

Family

ID=26414045

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4366370A Expired GB1312997A (en) 1969-09-13 1970-09-11 Apex seal for rotary piston engine and method of producing same

Country Status (4)

Country Link
US (1) US3658451A (en)
DE (1) DE2045125A1 (en)
FR (1) FR2061346A5 (en)
GB (1) GB1312997A (en)

Families Citing this family (19)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2156127B2 (en) * 1970-12-12 1973-05-10 Nippon Piston Ring K.K., Tokio PAIR OF SLIDING ELEMENTS LIKE PISTON RING AND CYLINDER WALL
JPS5149573B2 (en) * 1971-09-09 1976-12-27
JPS5134923B2 (en) * 1972-02-17 1976-09-29
JPS5143288Y2 (en) * 1972-02-21 1976-10-21
DE2302119C3 (en) * 1973-01-17 1978-11-23 Audi Nsu Auto Union Ag, 7107 Neckarsulm Process for the production of an inner seal for rotary piston machines
US4025366A (en) * 1973-01-17 1977-05-24 Audi Nsu Auto Union Aktiengesellschaft Method of making rotary piston engine cast iron interior seals by quench hardening
US3947046A (en) * 1973-05-30 1976-03-30 Riken Piston Ring Kogyo Kabushiki Kaisha Oil seal ring for internal combustion engine
GB1453181A (en) * 1975-01-17 1976-10-20 Caterpillar Tractor Co Apex seal for rotary engines
JPS52119431A (en) * 1976-03-31 1977-10-06 Toyo Kogyo Co Rotor housing of rotary piston engine
JPS5329221A (en) * 1976-08-31 1978-03-18 Toyo Kogyo Co Material for apex seals of rotary piston engines
JPS57163140A (en) * 1981-04-02 1982-10-07 Nippon Piston Ring Co Ltd Piston ring
WO1983004293A1 (en) * 1982-05-24 1983-12-08 Clark Eugene V Improvements in mechanical seal structures
JPS59188001A (en) * 1983-03-26 1984-10-25 Mazda Motor Corp Apex seal of rotary piston engine and its production method
JPH0652042B2 (en) * 1985-12-06 1994-07-06 マツダ株式会社 Manufacturing method for apex seal of rotary piston engine
JPS63118049A (en) * 1986-11-07 1988-05-23 Mazda Motor Corp Apex seal for rotary piston engine and its production
DE19525863A1 (en) * 1995-07-15 1997-01-16 Ae Goetze Gmbh Mechanical seal for the tracks of caterpillars
US6053716A (en) * 1997-01-14 2000-04-25 Tecumseh Products Company Vane for a rotary compressor
DE102004026865A1 (en) * 2004-06-02 2006-05-04 Ina-Schaeffler Kg Device for changing the timing of an internal combustion engine
US20140147601A1 (en) * 2012-11-26 2014-05-29 Lawrence Livermore National Security, Llc Cavitation And Impingement Resistant Materials With Photonically Assisted Cold Spray

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
GB1012707A (en) * 1962-07-02 1965-12-08 Goetzewerke Improvements relating to radial sealing strips for pistons of rotary-piston internalcombustion engines

Also Published As

Publication number Publication date
DE2045125A1 (en) 1971-06-03
US3658451A (en) 1972-04-25
FR2061346A5 (en) 1971-06-18

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PCNP Patent ceased through non-payment of renewal fee