FR561209A - Fourneau à moufles pour le chauffage des fleurets de forage, etc. - Google Patents

Fourneau à moufles pour le chauffage des fleurets de forage, etc.

Info

Publication number
FR561209A
FR561209A FR561209DA FR561209A FR 561209 A FR561209 A FR 561209A FR 561209D A FR561209D A FR 561209DA FR 561209 A FR561209 A FR 561209A
Authority
FR
France
Prior art keywords
muffle furnace
drill bits
heating drill
heating
bits
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
English (en)
Inventor
David Stanislaus O'donovan
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 FR561209A publication Critical patent/FR561209A/fr
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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/22—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for drills; for milling cutters; for machine cutting tools

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)
FR561209D 1923-01-19 1923-01-19 Fourneau à moufles pour le chauffage des fleurets de forage, etc. Expired FR561209A (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR561209T 1923-01-19

Publications (1)

Publication Number Publication Date
FR561209A true FR561209A (fr) 1923-10-18

Family

ID=8943472

Family Applications (1)

Application Number Title Priority Date Filing Date
FR561209D Expired FR561209A (fr) 1923-01-19 1923-01-19 Fourneau à moufles pour le chauffage des fleurets de forage, etc.

Country Status (1)

Country Link
FR (1) FR561209A (fr)

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