GB1443466A - Steels - Google Patents

Steels

Info

Publication number
GB1443466A
GB1443466A GB4501973A GB4501973A GB1443466A GB 1443466 A GB1443466 A GB 1443466A GB 4501973 A GB4501973 A GB 4501973A GB 4501973 A GB4501973 A GB 4501973A GB 1443466 A GB1443466 A GB 1443466A
Authority
GB
United Kingdom
Prior art keywords
sheet
temperature
steel
steel sheet
sept
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
GB4501973A
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.)
Nippon Steel Corp
Original Assignee
Nippon Steel Corp
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
Priority claimed from JP9572972A external-priority patent/JPS5338685B2/ja
Priority claimed from JP9572872A external-priority patent/JPS5341613B2/ja
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Publication of GB1443466A publication Critical patent/GB1443466A/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
    • 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
    • C21D8/04—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing
    • C21D8/0447—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips to produce plates or strips for deep-drawing characterised by the heat treatment
    • C21D8/0473—Final recrystallisation annealing
    • 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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

1443466 Heat-treated steel sheet for press forming NIPPON STEEL CORP 26 Sept 1973 [26 Sept 1972 (2)] 45019/73 Heading C7A [Also in Division B3] Steel sheet containing a maximum of 0.1% carbon and 0.3% manganese, normal steel making additives and unavoidable impurities in which the Mn, S, 02 and N2 contents satisfy the equation:- 0.002 N (ppm) - 0.003 # K # 0.17 + 0.002 N (ppm) wherein K = Mn (wt %) -<SP>55</SP>/ 32 S (wt %) -<SP>55</SP>/ 16 02 (wt %) is produced by hot-rolling the steel sheet, coiling at a temperature between 600‹C and [850-2.1 x 10<SP>3</SP>C (wt. %)] ‹C, cold-rolling the sheet, continuously annealing the sheet between 650‹C and [1680 - (4.6 x 10<SP>3</SP>) C wt % - the hot coiling temperature ‹C] ‹C for from 30 seconds to 5 minutes, rapidly cooling the sheet e.g. at 5 to 30‹C per second and then averaging the sheet e.g. at a starting temperature of 500 C cooling either continuously or in steps to a finishing temperature of 200‹C in 2 to 10 minutes. The averaged sheet may be subsequently rapidly cooled to 40‹C and temper rolled with a 1% to 1.5% reduction and used in press forming applications e.g. car bodies. The steel sheet may contain in addition to the specified carbon and manganese contents:- S 0 to 0.015% by weight P 0 to 0.014% Si 0 to 0.01% 0 2 0 to 0.052% N20 to < 25 p.p.m.
GB4501973A 1972-09-26 1973-09-26 Steels Expired GB1443466A (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
JP9572972A JPS5338685B2 (en) 1972-09-26 1972-09-26
JP9572872A JPS5341613B2 (en) 1972-09-26 1972-09-26

Publications (1)

Publication Number Publication Date
GB1443466A true GB1443466A (en) 1976-07-21

Family

ID=26436922

Family Applications (1)

Application Number Title Priority Date Filing Date
GB4501973A Expired GB1443466A (en) 1972-09-26 1973-09-26 Steels

Country Status (8)

Country Link
US (1) US3920487A (en)
AU (1) AU470116B2 (en)
CA (1) CA1019169A (en)
DE (1) DE2348062C3 (en)
ES (1) ES419110A1 (en)
FR (1) FR2200359B1 (en)
GB (1) GB1443466A (en)
IT (1) IT995496B (en)

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5157623A (en) * 1974-11-18 1976-05-20 Nippon Kokan Kk Takaitosoyakitsukekokaseitosugureta hijikoseiomotsukochoryokureienkohanno seizohoho
JPS5171812A (en) * 1974-12-20 1976-06-22 Toyo Kohan Co Ltd Renzokushodon nyoru nanshitsusukohanno seizohoho
JPS53137020A (en) * 1977-05-02 1978-11-30 Centre Rech Metallurgique Continuous heat treatment method of rolled steel sheet
JPS5832218B2 (en) * 1978-08-22 1983-07-12 川崎製鉄株式会社 Method for producing high-strength steel sheets with excellent pressability, especially shape fixability
JPS5852436A (en) * 1981-09-19 1983-03-28 Nippon Steel Corp Production of cold rolled steel plate having excellent press workability and aging characteristic
AU575730B2 (en) * 1985-01-31 1988-08-04 Kawasaki Steel Corporation Continuous annealing extra-low carbon steel

Family Cites Families (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3607456A (en) * 1969-04-15 1971-09-21 Bethlehem Steel Corp Deep drawing steel and method of manufacture
US3666569A (en) * 1969-06-18 1972-05-30 Republic Steel Corp Production of deep drawing steel
US3806376A (en) * 1969-12-30 1974-04-23 Nippon Steel Corp Method for producing low-carbon cold rolled steel sheet having excellent cold working properties and an apparatus for continuous treatment thereof
JPS516610B1 (en) * 1971-04-27 1976-03-01
US3765874A (en) * 1972-05-19 1973-10-16 Armco Steel Corp Vacuum degassed, interstitial-free, low carbon steel and method for producing same

Also Published As

Publication number Publication date
CA1019169A (en) 1977-10-18
AU470116B2 (en) 1976-03-04
FR2200359B1 (en) 1976-04-30
AU6063273A (en) 1975-05-08
DE2348062C3 (en) 1980-08-28
IT995496B (en) 1975-11-10
DE2348062A1 (en) 1974-04-04
US3920487A (en) 1975-11-18
FR2200359A1 (en) 1974-04-19
ES419110A1 (en) 1976-03-16
DE2348062B2 (en) 1979-12-20

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Legal Events

Date Code Title Description
PS Patent sealed [section 19, patents act 1949]
PE20 Patent expired after termination of 20 years

Effective date: 19930925