GB1123364A - Process for the treatment of ferritic steel strips - Google Patents

Process for the treatment of ferritic steel strips

Info

Publication number
GB1123364A
GB1123364A GB5341565A GB5341565A GB1123364A GB 1123364 A GB1123364 A GB 1123364A GB 5341565 A GB5341565 A GB 5341565A GB 5341565 A GB5341565 A GB 5341565A GB 1123364 A GB1123364 A GB 1123364A
Authority
GB
United Kingdom
Prior art keywords
strip
treatment
rolled
steel strips
hours
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
GB5341565A
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.)
Krupp Stahl AG
Original Assignee
Stahlwerke Suedwestfalen 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 Stahlwerke Suedwestfalen AG filed Critical Stahlwerke Suedwestfalen AG
Publication of GB1123364A publication Critical patent/GB1123364A/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
    • C21D6/00—Heat treatment of ferrous alloys
    • C21D6/002—Heat treatment of ferrous alloys containing Cr
    • 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
    • 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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • 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
    • 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

Abstract

A two-stage annealing process for avoiding ribbing and roping in cold-rolled ferrilic stainless steel strip containing 14-20% Cr comprises box-annealing the strip e.g. in coiled form first at 750-970 DEG C. for up to 10 hours then at 700-850 DEG C. for up to 40 hours without intermediate air cooling, the first annealing temperature perferably being not more than 50 DEG C. below nor 50 DEG C. above the ferrite-austenite transformation point. A specified steel composition is 0.05%C, 0.44% Si, 0.28% Mn, 0.021% P, 0.01% S, 17.4% Cr, 0.2% Ni, 0.08% Mo, 0.0362% N, balance Fe. The annealed strip may be air cooled and further cold-rolled and annealed e.g. at 850 DEG C. and pickled.
GB5341565A 1964-12-28 1965-12-16 Process for the treatment of ferritic steel strips Expired GB1123364A (en)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DEST23138A DE1222520B (en) 1964-12-28 1964-12-28 Process to avoid the formation of grooves and to improve the mechanical and technological properties of cold-rolled, rust-resistant, ferritic strips with 14 to 20% chromium

Publications (1)

Publication Number Publication Date
GB1123364A true GB1123364A (en) 1968-08-14

Family

ID=7459641

Family Applications (1)

Application Number Title Priority Date Filing Date
GB5341565A Expired GB1123364A (en) 1964-12-28 1965-12-16 Process for the treatment of ferritic steel strips

Country Status (8)

Country Link
AT (1) AT272392B (en)
BE (1) BE674272A (en)
CH (1) CH476106A (en)
DE (1) DE1222520B (en)
FR (1) FR1466617A (en)
GB (1) GB1123364A (en)
LU (1) LU50111A1 (en)
NL (1) NL6516857A (en)

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59576B2 (en) * 1980-08-09 1984-01-07 新日本製鐵株式会社 Manufacturing method of ferritic stainless thin steel sheet with excellent workability

Also Published As

Publication number Publication date
CH476106A (en) 1969-07-31
BE674272A (en) 1966-04-15
LU50111A1 (en) 1966-02-22
AT272392B (en) 1969-07-10
FR1466617A (en) 1967-01-20
NL6516857A (en) 1966-06-29
DE1222520B (en) 1966-08-11

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