JPS56163219A - Production of cold rolled high-tensile galvanized steel strip having low yield ratio - Google Patents

Production of cold rolled high-tensile galvanized steel strip having low yield ratio

Info

Publication number
JPS56163219A
JPS56163219A JP6400580A JP6400580A JPS56163219A JP S56163219 A JPS56163219 A JP S56163219A JP 6400580 A JP6400580 A JP 6400580A JP 6400580 A JP6400580 A JP 6400580A JP S56163219 A JPS56163219 A JP S56163219A
Authority
JP
Japan
Prior art keywords
steel strip
rolled
cold
low yield
galvanized steel
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.)
Pending
Application number
JP6400580A
Other languages
Japanese (ja)
Inventor
Arihiko Morita
Norio Tsukiji
Seiichi Hamanaka
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 Nisshin Co Ltd
Original Assignee
Nisshin Steel Co Ltd
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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP6400580A priority Critical patent/JPS56163219A/en
Publication of JPS56163219A publication Critical patent/JPS56163219A/en
Pending 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
    • C21D9/52—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 Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Coating With Molten Metal (AREA)

Abstract

PURPOSE:To obtain a cold rolled high-tensile galvanized steel strip having low yield ratios by working a slab of steel contg. specific ratios of C, Mn, Cr, Si, Al to a cold-rolled steel strip, heating the same at specific annealing temp. and subjecting the same to galvanize. CONSTITUTION:A slab of the steel consisting of 0.02-0.15% C, 1.6-3.0% Mn, 0.1-1.0% Cr, <=0.1% Si, 0.01-0.10% Al and the balance Fe with unavoidable inpurities and satisfying Mn%+1/2Cr%>=1.9 is hot-rolled, pickled and cold-rolled to obtain a cold-rolled steel strip. Thence, it is heated at annealing temp. of Ac1 transformation point-Ac2 transformation point with an in-line annealing type continuous galvanizing device and is immediately passed through a galvanizing bath, whereby it is plated. The average cooling rates up to the execution of the hot dipping after the in-line annealing are preferably about 2-8 deg.C/sec and the average cooling rates down to about 350 deg.C after the plating are preferably about 3-8 deg.C/sec.
JP6400580A 1980-05-16 1980-05-16 Production of cold rolled high-tensile galvanized steel strip having low yield ratio Pending JPS56163219A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6400580A JPS56163219A (en) 1980-05-16 1980-05-16 Production of cold rolled high-tensile galvanized steel strip having low yield ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6400580A JPS56163219A (en) 1980-05-16 1980-05-16 Production of cold rolled high-tensile galvanized steel strip having low yield ratio

Publications (1)

Publication Number Publication Date
JPS56163219A true JPS56163219A (en) 1981-12-15

Family

ID=13245639

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6400580A Pending JPS56163219A (en) 1980-05-16 1980-05-16 Production of cold rolled high-tensile galvanized steel strip having low yield ratio

Country Status (1)

Country Link
JP (1) JPS56163219A (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589968A (en) * 1981-05-27 1983-01-20 ラスメット・キ Continuous manufacture of coated high strength low alloy steel
US5021102A (en) * 1989-02-07 1991-06-04 Austria Metall Aktiengesellschaft Method of making a band for a band press
US6641931B2 (en) 1999-12-10 2003-11-04 Sidmar N.V. Method of production of cold-rolled metal coated steel products, and the products obtained, having a low yield ratio
WO2009008553A1 (en) * 2007-07-11 2009-01-15 Jfe Steel Corporation High-strength hot-dip galvanized steel sheet and process for producing the same
JP2009035818A (en) * 2007-07-11 2009-02-19 Jfe Steel Kk High-strength hot dip galvanized steel sheet having excellent press formability, and production method therefor
CN115181916A (en) * 2021-04-02 2022-10-14 宝山钢铁股份有限公司 1280 MPa-level low-carbon low-alloy ultrahigh-strength hot-dip galvanized dual-phase steel and rapid heat treatment hot-dip galvanizing manufacturing method

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647555A (en) * 1979-09-22 1981-04-30 Nisshin Steel Co Ltd Manufacture of high-tensile galvanized steel plate with low yield ratio
JPS5651532A (en) * 1979-10-03 1981-05-09 Nippon Kokan Kk <Nkk> Production of high-strength zinc hot dipped steel plate of superior workability
JPS5690964A (en) * 1979-12-22 1981-07-23 Nisshin Steel Co Ltd Production of high tensile aluminum hot dipped sheet steel of low yield ratio

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5647555A (en) * 1979-09-22 1981-04-30 Nisshin Steel Co Ltd Manufacture of high-tensile galvanized steel plate with low yield ratio
JPS5651532A (en) * 1979-10-03 1981-05-09 Nippon Kokan Kk <Nkk> Production of high-strength zinc hot dipped steel plate of superior workability
JPS5690964A (en) * 1979-12-22 1981-07-23 Nisshin Steel Co Ltd Production of high tensile aluminum hot dipped sheet steel of low yield ratio

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS589968A (en) * 1981-05-27 1983-01-20 ラスメット・キ Continuous manufacture of coated high strength low alloy steel
JPH0146564B2 (en) * 1981-05-27 1989-10-09 Rasumetsuto Ki
US5021102A (en) * 1989-02-07 1991-06-04 Austria Metall Aktiengesellschaft Method of making a band for a band press
US6641931B2 (en) 1999-12-10 2003-11-04 Sidmar N.V. Method of production of cold-rolled metal coated steel products, and the products obtained, having a low yield ratio
WO2009008553A1 (en) * 2007-07-11 2009-01-15 Jfe Steel Corporation High-strength hot-dip galvanized steel sheet and process for producing the same
JP2009035814A (en) * 2007-07-11 2009-02-19 Jfe Steel Kk High-strength hot-dip galvanized steel sheet and process for producing the same
JP2009035818A (en) * 2007-07-11 2009-02-19 Jfe Steel Kk High-strength hot dip galvanized steel sheet having excellent press formability, and production method therefor
EP2184374A4 (en) * 2007-07-11 2017-01-04 JFE Steel Corporation High-strength hot-dip galvanized steel sheet and process for producing the same
CN115181916A (en) * 2021-04-02 2022-10-14 宝山钢铁股份有限公司 1280 MPa-level low-carbon low-alloy ultrahigh-strength hot-dip galvanized dual-phase steel and rapid heat treatment hot-dip galvanizing manufacturing method
CN115181916B (en) * 2021-04-02 2023-09-12 宝山钢铁股份有限公司 1280 MPa-level low-carbon low-alloy ultrahigh-strength hot dip galvanized dual-phase steel and rapid heat treatment hot dip galvanizing manufacturing method

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