FR825036A - Method and devices for hardening metal parts by electric current - Google Patents

Method and devices for hardening metal parts by electric current

Info

Publication number
FR825036A
FR825036A FR825036DA FR825036A FR 825036 A FR825036 A FR 825036A FR 825036D A FR825036D A FR 825036DA FR 825036 A FR825036 A FR 825036A
Authority
FR
France
Prior art keywords
devices
electric current
metal parts
hardening metal
hardening
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
Other languages
French (fr)
Inventor
Mouravieff Paul
Mester Benjamin
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 filed Critical
Application granted granted Critical
Publication of FR825036A publication Critical patent/FR825036A/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
    • C21D1/34—Methods of heating
    • C21D1/40—Direct resistance heating

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)
FR825036D 1936-11-09 1936-11-09 Method and devices for hardening metal parts by electric current Expired FR825036A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR825036T 1936-11-09

Publications (1)

Publication Number Publication Date
FR825036A true FR825036A (en) 1938-02-22

Family

ID=9282126

Family Applications (1)

Application Number Title Priority Date Filing Date
FR825036D Expired FR825036A (en) 1936-11-09 1936-11-09 Method and devices for hardening metal parts by electric current

Country Status (1)

Country Link
FR (1) FR825036A (en)

Cited By (1)

* 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

Cited By (1)

* 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

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