JPS56116865A - Manufacture of hot galvanized steel plate having excellent aging resistance - Google Patents

Manufacture of hot galvanized steel plate having excellent aging resistance

Info

Publication number
JPS56116865A
JPS56116865A JP1836380A JP1836380A JPS56116865A JP S56116865 A JPS56116865 A JP S56116865A JP 1836380 A JP1836380 A JP 1836380A JP 1836380 A JP1836380 A JP 1836380A JP S56116865 A JPS56116865 A JP S56116865A
Authority
JP
Japan
Prior art keywords
steel plate
hot
cooled
temperature range
galvanization
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
JP1836380A
Other languages
Japanese (ja)
Inventor
Masamichi Nagano
Motoyuki Konishi
Toshio Irie
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.)
JFE Steel Corp
Original Assignee
Kawasaki 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
Application filed by Kawasaki Steel Corp filed Critical Kawasaki Steel Corp
Priority to JP1836380A priority Critical patent/JPS56116865A/en
Publication of JPS56116865A publication Critical patent/JPS56116865A/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
    • 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/285—Thermal after-treatment, e.g. treatment in oil bath for remelting the coating
    • 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
    • C23C2/26—After-treatment
    • C23C2/28—Thermal after-treatment, e.g. treatment in oil bath
    • C23C2/29—Cooling or quenching
    • 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

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Organic Chemistry (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Thermal Sciences (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Oil, Petroleum & Natural Gas (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To raise the aging resistance property of a hot galvanized steel plate by carrying out cooling treatment after the recrystallization and annealing of a cold rolled steel plate for hot galvanization and also cooling treatment after the hot galvanization under specific conditions. CONSTITUTION:A cold-rolled steel plate with 0.02-0.10% C for continuous hot galvanization is subjected to recrystallization and annealing treatments at 650 deg.C or higher for 10sec or more and then cooled by a gas to 350 deg.C at a cooling rate of 30- 60 deg.C/sec. Within a temperature range between 650 deg.C and 750 deg.C. Then, the steel plate is reheated and then dipped in a hot galvanizing bath to apply hot galvanization to both surfaces of the steel plate. Furthermore, the hot galvanized steel plate is, as needed, heated for alloying a part of zinc and steel plate. After the hot galvanization, the steel plate is cooled for 10sec to 1min within a temperature range of 400-350 deg.C and then cooled for 60sec to 10min within a temperature range of 350- 250 deg.C. The steel plate whose galvanized layer is already subjected to alloying treatment is cooled for 100sec to 10min within a temperature range of 350-250 deg.C. Thus, a hot galvanized steel plate having excellent aging resistance can be obtained.
JP1836380A 1980-02-15 1980-02-15 Manufacture of hot galvanized steel plate having excellent aging resistance Pending JPS56116865A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1836380A JPS56116865A (en) 1980-02-15 1980-02-15 Manufacture of hot galvanized steel plate having excellent aging resistance

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1836380A JPS56116865A (en) 1980-02-15 1980-02-15 Manufacture of hot galvanized steel plate having excellent aging resistance

Publications (1)

Publication Number Publication Date
JPS56116865A true JPS56116865A (en) 1981-09-12

Family

ID=11969606

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1836380A Pending JPS56116865A (en) 1980-02-15 1980-02-15 Manufacture of hot galvanized steel plate having excellent aging resistance

Country Status (1)

Country Link
JP (1) JPS56116865A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60251226A (en) * 1984-05-28 1985-12-11 Nippon Steel Corp Production of galvanized cold-rolled steel sheet having excellent workability
EP0360958A2 (en) * 1988-09-28 1990-04-04 Nippon Steel Corporation A zinc-plated steel sheet with an ageing resistance by hot dip-type, continuous zinc plating and process for producing the same
JPH03111547A (en) * 1989-06-21 1991-05-13 Nippon Steel Corp Production of hot dip galvanized cold-rolled steel sheet having non-ageing characteristic and superior workability by continuous hot dip galvanizing line
CN102758143A (en) * 2011-04-25 2012-10-31 宝山钢铁股份有限公司 Hot-dip galvanized steel sheet with tensile strength higher than 1180MPa, and manufacturing method thereof
CN104328262A (en) * 2014-11-25 2015-02-04 武汉钢铁(集团)公司 Production method of steel plate having iron-zinc alloy plated layer with extension rate of more than 42%

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60251226A (en) * 1984-05-28 1985-12-11 Nippon Steel Corp Production of galvanized cold-rolled steel sheet having excellent workability
EP0360958A2 (en) * 1988-09-28 1990-04-04 Nippon Steel Corporation A zinc-plated steel sheet with an ageing resistance by hot dip-type, continuous zinc plating and process for producing the same
JPH03111547A (en) * 1989-06-21 1991-05-13 Nippon Steel Corp Production of hot dip galvanized cold-rolled steel sheet having non-ageing characteristic and superior workability by continuous hot dip galvanizing line
CN102758143A (en) * 2011-04-25 2012-10-31 宝山钢铁股份有限公司 Hot-dip galvanized steel sheet with tensile strength higher than 1180MPa, and manufacturing method thereof
CN104328262A (en) * 2014-11-25 2015-02-04 武汉钢铁(集团)公司 Production method of steel plate having iron-zinc alloy plated layer with extension rate of more than 42%

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