FR2370794A1 - Procede de fabrication d'acier inoxydable ferritique lamine a froid pour la frappe de pieces de monnaie - Google Patents

Procede de fabrication d'acier inoxydable ferritique lamine a froid pour la frappe de pieces de monnaie

Info

Publication number
FR2370794A1
FR2370794A1 FR7634359A FR7634359A FR2370794A1 FR 2370794 A1 FR2370794 A1 FR 2370794A1 FR 7634359 A FR7634359 A FR 7634359A FR 7634359 A FR7634359 A FR 7634359A FR 2370794 A1 FR2370794 A1 FR 2370794A1
Authority
FR
France
Prior art keywords
steel
coinage
surface hardness
prodn
smoothness
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.)
Granted
Application number
FR7634359A
Other languages
English (en)
Other versions
FR2370794B1 (fr
Inventor
David Lloyd Chalk
William Frederick Pontius
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.)
Armco Inc
Original Assignee
Armco Inc
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 Armco Inc filed Critical Armco Inc
Priority to FR7634359A priority Critical patent/FR2370794A1/fr
Publication of FR2370794A1 publication Critical patent/FR2370794A1/fr
Application granted granted Critical
Publication of FR2370794B1 publication Critical patent/FR2370794B1/fr
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys

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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

L'invention concerne un procédé de fabrication d'une bande d'acier inoxydable ferritique. On utilise un acier contenant au maximum 0,03 % de carbone, 0,50 % de manganèse, 0,040 % de phosphore, 0,020 % de soufre, 1% de silicium, 12 à 18 % de chrome, 0,50 % de nickel, 0,1 à 0,3 % d'aluminium et le reste de fer, cet acier étant coulé puis laminé à chaud et recuit entre 815 et 845 degrés C puis soumis à abrasion, décapé et laminé à froid et enfin recuit de manière continue entre 845 degrés C et 900 degrés C dans une atmosphère d'hydrogène. Application à la fabrication de bandes pour la frappe de pièces de monnaie.
FR7634359A 1976-11-15 1976-11-15 Procede de fabrication d'acier inoxydable ferritique lamine a froid pour la frappe de pieces de monnaie Granted FR2370794A1 (fr)

Priority Applications (1)

Application Number Priority Date Filing Date Title
FR7634359A FR2370794A1 (fr) 1976-11-15 1976-11-15 Procede de fabrication d'acier inoxydable ferritique lamine a froid pour la frappe de pieces de monnaie

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
FR7634359A FR2370794A1 (fr) 1976-11-15 1976-11-15 Procede de fabrication d'acier inoxydable ferritique lamine a froid pour la frappe de pieces de monnaie

Publications (2)

Publication Number Publication Date
FR2370794A1 true FR2370794A1 (fr) 1978-06-09
FR2370794B1 FR2370794B1 (fr) 1979-03-02

Family

ID=9179912

Family Applications (1)

Application Number Title Priority Date Filing Date
FR7634359A Granted FR2370794A1 (fr) 1976-11-15 1976-11-15 Procede de fabrication d'acier inoxydable ferritique lamine a froid pour la frappe de pieces de monnaie

Country Status (1)

Country Link
FR (1) FR2370794A1 (fr)

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1338498A (fr) * 1962-08-13 1963-09-27 Armco Steel Corp Procédé pour atténuer la tendance des aciers ferritiques au chrome à former des irrégularités de surface
FR1357927A (fr) * 1963-05-15 1964-04-10 Suedwestfalen Ag Stahlwerke Procédé pour éviter éviter les figures de déformation plastique ou vermiculures sur les toles et feuillards ferritiques inoxydables contenant de 14 à 20 de chrome et laminés à froid
GB1162562A (en) * 1965-10-02 1969-08-27 Suedwestfalen Ag Stahlwerke Improvements relating to Steel
FR2193087A1 (fr) * 1972-07-14 1974-02-15 Uss Eng & Consult

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR1338498A (fr) * 1962-08-13 1963-09-27 Armco Steel Corp Procédé pour atténuer la tendance des aciers ferritiques au chrome à former des irrégularités de surface
FR1357927A (fr) * 1963-05-15 1964-04-10 Suedwestfalen Ag Stahlwerke Procédé pour éviter éviter les figures de déformation plastique ou vermiculures sur les toles et feuillards ferritiques inoxydables contenant de 14 à 20 de chrome et laminés à froid
GB1162562A (en) * 1965-10-02 1969-08-27 Suedwestfalen Ag Stahlwerke Improvements relating to Steel
FR2193087A1 (fr) * 1972-07-14 1974-02-15 Uss Eng & Consult

Also Published As

Publication number Publication date
FR2370794B1 (fr) 1979-03-02

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Legal Events

Date Code Title Description
ST Notification of lapse