DE3277732D1 - Process for high-temperature carburizing treatment of track bushes for tractors or tracked vehicles, with carburizing atmosphere produced in situ, direct quenching, annealing at ends and total stress relieving - Google Patents

Process for high-temperature carburizing treatment of track bushes for tractors or tracked vehicles, with carburizing atmosphere produced in situ, direct quenching, annealing at ends and total stress relieving

Info

Publication number
DE3277732D1
DE3277732D1 DE8282830210T DE3277732T DE3277732D1 DE 3277732 D1 DE3277732 D1 DE 3277732D1 DE 8282830210 T DE8282830210 T DE 8282830210T DE 3277732 T DE3277732 T DE 3277732T DE 3277732 D1 DE3277732 D1 DE 3277732D1
Authority
DE
Germany
Prior art keywords
tractors
annealing
situ
stress relieving
carburizing
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
DE8282830210T
Other languages
German (de)
Inventor
Walter Grilli
Meo Franco De
Ivan Franchini
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.)
ITALTRACTOR MECCANICA ITM SpA
Original Assignee
ITALTRACTOR MECCANICA ITM SpA
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 ITALTRACTOR MECCANICA ITM SpA filed Critical ITALTRACTOR MECCANICA ITM SpA
Application granted granted Critical
Publication of DE3277732D1 publication Critical patent/DE3277732D1/en
Expired 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
    • C23C8/00—Solid state diffusion of only non-metal elements into metallic material surfaces; Chemical surface treatment of metallic material by reaction of the surface with a reactive gas, leaving reaction products of surface material in the coating, e.g. conversion coatings, passivation of metals
    • C23C8/80—After-treatment
    • 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
    • C21D1/78—Combined heat-treatments not provided for above
    • 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes
    • C21D9/14—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes wear-resistant or pressure-resistant pipes

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Solid-Phase Diffusion Into Metallic Material Surfaces (AREA)
  • Heat Treatment Of Articles (AREA)
DE8282830210T 1981-10-23 1982-07-21 Process for high-temperature carburizing treatment of track bushes for tractors or tracked vehicles, with carburizing atmosphere produced in situ, direct quenching, annealing at ends and total stress relieving Expired DE3277732D1 (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT49552/81A IT1171606B (en) 1981-10-23 1981-10-23 PROCESS FOR HEAT TREATMENT OF CEMENTATION AT HIGH TEMPERATURE WITH CEMENTING ATMOSPHERE PRODUCED IN SITU DIRECT HARDENING AT THE ENDS OF TOTAL DISTENSION OF BUSHINGS FOR TRACTOR CATALOGS OR TRACKED VEHICLES

Publications (1)

Publication Number Publication Date
DE3277732D1 true DE3277732D1 (en) 1988-01-07

Family

ID=11271005

Family Applications (1)

Application Number Title Priority Date Filing Date
DE8282830210T Expired DE3277732D1 (en) 1981-10-23 1982-07-21 Process for high-temperature carburizing treatment of track bushes for tractors or tracked vehicles, with carburizing atmosphere produced in situ, direct quenching, annealing at ends and total stress relieving

Country Status (4)

Country Link
EP (1) EP0079864B1 (en)
BR (1) BR8206000A (en)
DE (1) DE3277732D1 (en)
IT (1) IT1171606B (en)

Families Citing this family (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60138065A (en) * 1983-12-27 1985-07-22 Chugai Ro Kogyo Kaisha Ltd Gas carburizing and quenching method and continuous gas carburizing and quenching equipment
JPH02169375A (en) * 1988-12-21 1990-06-29 Topy Ind Ltd Crawler bushing and manufacture thereof
JPH03285020A (en) * 1990-03-31 1991-12-16 Topy Ind Ltd Manufacture of bushing for crawler
IT1288690B1 (en) * 1996-11-14 1998-09-23 Bruno Girardello PROCEDURE FOR THE HEAT TREATMENT OF BUSHINGS ESPECIALLY FOR TRACKED AND SIMILAR VEHICLES

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE632935C (en) * 1931-05-16 1936-07-16 Benno Schilde Maschb Akt Ges Process and device for surface carbonization of iron and steel
US3227586A (en) * 1963-08-19 1966-01-04 Caterpillar Tractor Co Track pin bushing
CH615948A5 (en) * 1974-03-18 1980-02-29 Hawera Probst Kg Hartmetall
US4049473A (en) * 1976-03-11 1977-09-20 Airco, Inc. Methods for carburizing steel parts
US4152177A (en) * 1977-02-03 1979-05-01 General Motors Corporation Method of gas carburizing

Also Published As

Publication number Publication date
BR8206000A (en) 1983-09-13
EP0079864A1 (en) 1983-05-25
EP0079864B1 (en) 1987-11-25
IT1171606B (en) 1987-06-10
IT8149552A0 (en) 1981-10-23

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Legal Events

Date Code Title Description
8364 No opposition during term of opposition
8339 Ceased/non-payment of the annual fee