FR1022523A - Manufacturing process of a hollow drill - Google Patents

Manufacturing process of a hollow drill

Info

Publication number
FR1022523A
FR1022523A FR1022523DA FR1022523A FR 1022523 A FR1022523 A FR 1022523A FR 1022523D A FR1022523D A FR 1022523DA FR 1022523 A FR1022523 A FR 1022523A
Authority
FR
France
Prior art keywords
manufacturing process
hollow drill
drill
hollow
manufacturing
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)
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.)
Gussstahlwerk Witten AG
Original Assignee
Gussstahlwerk Witten AG
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 Gussstahlwerk Witten AG filed Critical Gussstahlwerk Witten AG
Application granted granted Critical
Publication of FR1022523A publication Critical patent/FR1022523A/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
    • 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
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length

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)
FR1022523D 1950-07-26 1950-07-26 Manufacturing process of a hollow drill Expired FR1022523A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR1022523T 1950-07-26

Publications (1)

Publication Number Publication Date
FR1022523A true FR1022523A (en) 1953-03-05

Family

ID=9577680

Family Applications (1)

Application Number Title Priority Date Filing Date
FR1022523D Expired FR1022523A (en) 1950-07-26 1950-07-26 Manufacturing process of a hollow drill

Country Status (1)

Country Link
FR (1) FR1022523A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167743A1 (en) * 1972-01-07 1973-08-24 British Railways Board

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2167743A1 (en) * 1972-01-07 1973-08-24 British Railways Board

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