JPS5647555A - Manufacture of high-tensile galvanized steel plate with low yield ratio - Google Patents

Manufacture of high-tensile galvanized steel plate with low yield ratio

Info

Publication number
JPS5647555A
JPS5647555A JP12158979A JP12158979A JPS5647555A JP S5647555 A JPS5647555 A JP S5647555A JP 12158979 A JP12158979 A JP 12158979A JP 12158979 A JP12158979 A JP 12158979A JP S5647555 A JPS5647555 A JP S5647555A
Authority
JP
Japan
Prior art keywords
steel plate
low yield
yield ratio
steel
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.)
Granted
Application number
JP12158979A
Other languages
Japanese (ja)
Other versions
JPS6213415B2 (en
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 JP12158979A priority Critical patent/JPS5647555A/en
Publication of JPS5647555A publication Critical patent/JPS5647555A/en
Publication of JPS6213415B2 publication Critical patent/JPS6213415B2/ja
Granted legal-status Critical Current

Links

Classifications

    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36—Elongated material
    • C23C2/40—Plates; Strips
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00—Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02—Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • C23C2/022—Pretreatment of the material to be coated, e.g. for coating on selected surface areas by heating

Landscapes

  • Chemical & Material Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To obtain the high-tensile galvanized steel plate with low yield ratio by a method in which a steel having a specific composition with C, Mn, etc., and a CE value (satisfying a specific formula) of 0.17 or more is heated to a specific annealing temperature and then passed through an in-line annealing type continuous hot galvanizer. CONSTITUTION:In the manufacture of the glavanized steel plate by passing a steel strip subjected to a cold rolling through the in-line annealing type continuous hot galvanizer, the steel, consisting of 0.02-0.07% C, 1.5-2.5% Mn, 0.5-1% Cr, 0.01-0.1% Al, 0.07% or less Si, and the remaining Fe, and also the CE value (satisfying the formula) of 0.17 or more, is used as the steel strip. The steel strip is heated to the annealing temperature, or the transformation points AC1-AC3 of the strip, and soon passed through the hot galvanizing bath of the said hot galvanizer to obtain the galvanized steel plate having the low yield ratio of approx. 0.7 or less and the tensile strength of approx. 45kg/mm.<2> or more.
JP12158979A 1979-09-22 1979-09-22 Manufacture of high-tensile galvanized steel plate with low yield ratio Granted JPS5647555A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12158979A JPS5647555A (en) 1979-09-22 1979-09-22 Manufacture of high-tensile galvanized steel plate with low yield ratio

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12158979A JPS5647555A (en) 1979-09-22 1979-09-22 Manufacture of high-tensile galvanized steel plate with low yield ratio

Publications (2)

Publication Number Publication Date
JPS5647555A true JPS5647555A (en) 1981-04-30
JPS6213415B2 JPS6213415B2 (en) 1987-03-26

Family

ID=14814978

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12158979A Granted JPS5647555A (en) 1979-09-22 1979-09-22 Manufacture of high-tensile galvanized steel plate with low yield ratio

Country Status (1)

Country Link
JP (1) JPS5647555A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163219A (en) * 1980-05-16 1981-12-15 Nisshin Steel Co Ltd Production of cold rolled high-tensile galvanized steel strip having low yield ratio
JPS5839770A (en) * 1981-09-03 1983-03-08 Kobe Steel Ltd Production of high-strength zinc hot dipped steel plate
JPS61177378A (en) * 1985-02-01 1986-08-09 Nippon Steel Corp Chromated cr-containing steel sheet having superior suitability to coating with paint
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

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56163219A (en) * 1980-05-16 1981-12-15 Nisshin Steel Co Ltd Production of cold rolled high-tensile galvanized steel strip having low yield ratio
JPS5839770A (en) * 1981-09-03 1983-03-08 Kobe Steel Ltd Production of high-strength zinc hot dipped steel plate
JPH0543779B2 (en) * 1981-09-03 1993-07-02 Kobe Steel Ltd
JPS61177378A (en) * 1985-02-01 1986-08-09 Nippon Steel Corp Chromated cr-containing steel sheet having superior suitability to coating with paint
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

Also Published As

Publication number Publication date
JPS6213415B2 (en) 1987-03-26

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