GB2059444A - Surface hardening of metals by electric arc discharge - Google Patents

Surface hardening of metals by electric arc discharge

Info

Publication number
GB2059444A
GB2059444A GB8038466A GB8038466A GB2059444A GB 2059444 A GB2059444 A GB 2059444A GB 8038466 A GB8038466 A GB 8038466A GB 8038466 A GB8038466 A GB 8038466A GB 2059444 A GB2059444 A GB 2059444A
Authority
GB
United Kingdom
Prior art keywords
hardening
arc
electric arc
metals
alloys
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Withdrawn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
GB8038466A
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.)
Commonwealth Scientific and Industrial Research Organization CSIRO
Original Assignee
Commonwealth Scientific and Industrial Research Organization CSIRO
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 Commonwealth Scientific and Industrial Research Organization CSIRO filed Critical Commonwealth Scientific and Industrial Research Organization CSIRO
Publication of GB2059444A publication Critical patent/GB2059444A/en
Withdrawn legal-status Critical Current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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Heat Treatment Of Articles (AREA)
  • Other Surface Treatments For Metallic Materials (AREA)

Abstract

Alloys which respond to heat treatment are surface hardened by establishing an electric arc between a non-consumable electrode and the metal surface and causing relative movement between the arc and metal surface to occur so that the surface temperature is raised to the austenitic range but below the melting point. Removal of the arc causes the surface to cool rapidly and brings about transformation hardening. The procedure may be applied to steels, cast irons and certain non-ferrous metal alloys which are susceptible to transformation hardening. Practical applications include the surface hardening of railway track, railway wheels and crankshafts as well as the cylinder walls and valve seats of internal combustion engines.
GB8038466A 1979-05-07 1980-05-06 Surface hardening of metals by electric arc discharge Withdrawn GB2059444A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
AUPD866479 1979-05-07

Publications (1)

Publication Number Publication Date
GB2059444A true GB2059444A (en) 1981-04-23

Family

ID=3768094

Family Applications (1)

Application Number Title Priority Date Filing Date
GB8038466A Withdrawn GB2059444A (en) 1979-05-07 1980-05-06 Surface hardening of metals by electric arc discharge

Country Status (3)

Country Link
GB (1) GB2059444A (en)
IT (1) IT8021859A0 (en)
WO (1) WO1980002434A1 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4000744C2 (en) * 1990-01-12 1996-07-11 Trumpf Gmbh & Co Process for steel edges of winter sports equipment
US5508492A (en) * 1991-03-18 1996-04-16 Aluminum Company Of America Apparatus for extending broad metal surface areas with a magnetically impelled arc

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2844498A (en) * 1954-03-18 1958-07-22 Mouravieff Nicolas Method and means for surfacehardening of steel
SU151365A1 (en) * 1961-12-06 1962-11-30 ев В.Ф. Биз Installation for the heat treatment of the teeth of the serrated tape
NO119507B (en) * 1964-04-15 1970-05-25 Union Carbide Corp
US3360630A (en) * 1966-01-19 1967-12-26 Blaszkowski Henry Process of hardening metal surfaces
AT294887B (en) * 1968-03-27 1971-12-10 Elektro Thermit Gmbh Process for the elimination of corrugations or to reduce or avoid the formation of corrugations on the running and / or guide surfaces of rails
DE2203574A1 (en) * 1972-01-26 1973-08-02 Messer Griesheim Gmbh Heat treating metal workpieces - eg to reduce wear and tear between moving surfaces, without undesirable deformation
US3763343A (en) * 1972-07-13 1973-10-02 I Rocklin Metal treating tool
US4047984A (en) * 1975-11-17 1977-09-13 Caterpillar Tractor Co. Corpuscular energy beam produced microasperities
JPS5371610A (en) * 1976-12-09 1978-06-26 Nippon Kokan Kk <Nkk> Electro spark machining method for rolling-mill roll having satin furface
DE2741567C2 (en) * 1977-09-15 1981-09-24 Audi Nsu Auto Union Ag, 7107 Neckarsulm Process for producing remelt hardening hardened surfaces
DE2824373A1 (en) * 1978-06-03 1979-12-06 Aeg Elotherm Gmbh PROCESS FOR SURFACE HARDENING OF A CAST-IRON WORKPIECE OF LIMITED THERMAL CAPACITY
DE2825579C3 (en) * 1978-06-10 1985-08-01 Audi AG, 8070 Ingolstadt Method and device for remelt hardening of the cams of a camshaft of a brake engine

Also Published As

Publication number Publication date
WO1980002434A1 (en) 1980-11-13
IT8021859A0 (en) 1980-05-07

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Legal Events

Date Code Title Description
WAP Application withdrawn, taken to be withdrawn or refused ** after publication under section 16(1)