JPS5681629A - Continuous annealing method of cold-rolled steel plate - Google Patents

Continuous annealing method of cold-rolled steel plate

Info

Publication number
JPS5681629A
JPS5681629A JP15684479A JP15684479A JPS5681629A JP S5681629 A JPS5681629 A JP S5681629A JP 15684479 A JP15684479 A JP 15684479A JP 15684479 A JP15684479 A JP 15684479A JP S5681629 A JPS5681629 A JP S5681629A
Authority
JP
Japan
Prior art keywords
steel plate
rolled steel
temp
plate
cold
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
JP15684479A
Other languages
Japanese (ja)
Inventor
Hajime Hinoto
Hiromitsu Naito
Takao Saito
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
Application filed by Nippon Steel Corp filed Critical Nippon Steel Corp
Priority to JP15684479A priority Critical patent/JPS5681629A/en
Priority to AU57290/80A priority patent/AU518681B2/en
Priority to CA000349671A priority patent/CA1137394A/en
Priority to BE0/200217A priority patent/BE882780A/en
Priority to GB8013147A priority patent/GB2070072B/en
Priority to DE19803015461 priority patent/DE3015461C3/en
Priority to NLAANVRAGE8002347,A priority patent/NL182092C/en
Priority to IT67638/80A priority patent/IT1130806B/en
Priority to BR8002564A priority patent/BR8002564A/en
Priority to FR8010007A priority patent/FR2470803B1/en
Publication of JPS5681629A publication Critical patent/JPS5681629A/en
Priority to US06/339,053 priority patent/US4437905A/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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire
    • C21D9/561—Continuous furnaces for strip or wire with a controlled atmosphere or vacuum
    • 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
    • C21D9/54—Furnaces for treating strips or wire
    • C21D9/56—Continuous furnaces for strip or wire

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)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

PURPOSE: To produce a cold-rolled steel plate for working of superior surface quality in a short time, by quickly heating a low carbon cold-rolled steel plate or the like in a direct fire type heating furnace, soaking the same in a reducing atmosphere in a specific temp. range and further subjecting the same to over-aging treatment then pickling the plate, at the time of continuously annealing said steel plate.
CONSTITUTION: At the time of continuously annealing a low carbon cold rolled steel plate or the like, first the plate is preheated to ≤500°C by the waste gas of a direct fire furnace, after which it is quickly heated at high rates of 40W100°C/sec in mean heating rate at temperature above 400W500°C in the direct fire type heating furnace. At the same time, the atmosphere is controlled to keep the thickness of the oxide film formed at ≤1,000Å. Next, the plate is soaked for ≥10sec in a reducing atmosphere of >4% hydrogen concn. and <10°C dew point, in a temp. range of 700°CWAc3 transformation point. The plate is then subjected to over- aging treatment for ≤3min in a 300W550°C temp. range by performing gas-liquid cooling of 10W300°C/sec cooling rates by spraying of gas and water from the temp. ≥600°C down to near the over-aging treatment temp. After the secondary cooling, it is pickled, whereby the cold-rolled steel plate for working of good surface quality is produced.
COPYRIGHT: (C)1981,JPO&Japio
JP15684479A 1979-12-05 1979-12-05 Continuous annealing method of cold-rolled steel plate Pending JPS5681629A (en)

Priority Applications (11)

Application Number Priority Date Filing Date Title
JP15684479A JPS5681629A (en) 1979-12-05 1979-12-05 Continuous annealing method of cold-rolled steel plate
AU57290/80A AU518681B2 (en) 1979-12-05 1980-04-11 Continuously annealing a cold-rolled low carbon steel strip
CA000349671A CA1137394A (en) 1979-12-05 1980-04-11 Process for continuously annealing a cold-rolled low carbon steel strip
BE0/200217A BE882780A (en) 1979-12-05 1980-04-14 METHOD OF CONTINUOUSLY ANNUATING STEEL STRIPS
DE19803015461 DE3015461C3 (en) 1979-12-05 1980-04-22 METHOD FOR CROSS-BOWING A COLD-ROLLED LOW-CARBON STEEL STRIP
GB8013147A GB2070072B (en) 1979-12-05 1980-04-22 Continuous annealing of cold-rolled low carbon steel strip
NLAANVRAGE8002347,A NL182092C (en) 1979-12-05 1980-04-23 METHOD FOR THE CONTINUOUS MANUFACTURE OF A STEEL STRAP.
IT67638/80A IT1130806B (en) 1979-12-05 1980-04-23 CONTINUOUS ANNEALING PROCEDURE OF A COLD ROLLED SWEET STEEL TAPE
BR8002564A BR8002564A (en) 1979-12-05 1980-04-25 PROCESS FOR CONTINUOUS RECOVERY OF A LOW CARBON STEEL STRIP, COLD LAMINATED
FR8010007A FR2470803B1 (en) 1979-12-05 1980-04-25 METHOD OF CONTINUOUSLY ANNUCING A LOW CARBON NUT STEEL STRIP
US06/339,053 US4437905A (en) 1979-12-05 1982-01-13 Process for continuously annealing a cold-rolled low carbon steel strip

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15684479A JPS5681629A (en) 1979-12-05 1979-12-05 Continuous annealing method of cold-rolled steel plate

Publications (1)

Publication Number Publication Date
JPS5681629A true JPS5681629A (en) 1981-07-03

Family

ID=15636601

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15684479A Pending JPS5681629A (en) 1979-12-05 1979-12-05 Continuous annealing method of cold-rolled steel plate

Country Status (2)

Country Link
JP (1) JPS5681629A (en)
BE (1) BE882780A (en)

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109722U (en) * 1987-01-06 1988-07-14
WO2008058986A1 (en) * 2006-11-14 2008-05-22 Danieli & C. Officine Meccaniche S.P.A. Annealing and pickling process
JP2009525401A (en) * 2006-02-03 2009-07-09 リンデ アクチエンゲゼルシヤフト Heat treatment method for steel strip in a continuous heat treatment furnace equipped with an oxy-fuel burner
JP2010532428A (en) * 2007-06-29 2010-10-07 アルセロールミタル・フランス Method for producing galvanized or alloyed galvanized steel sheet by DFF adjustment

Cited By (7)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63109722U (en) * 1987-01-06 1988-07-14
JPH0647233Y2 (en) * 1987-01-06 1994-12-07 ヤンマー農機株式会社 Feeding device for grain culms in combine harvester
JP2009525401A (en) * 2006-02-03 2009-07-09 リンデ アクチエンゲゼルシヤフト Heat treatment method for steel strip in a continuous heat treatment furnace equipped with an oxy-fuel burner
WO2008058986A1 (en) * 2006-11-14 2008-05-22 Danieli & C. Officine Meccaniche S.P.A. Annealing and pickling process
JP2010509073A (en) * 2006-11-14 2010-03-25 ダニエリ アンド シー．オフィチネ メッカニチェ ソシエタ ペル アチオニ Annealing and pickling methods
US8192566B2 (en) 2006-11-14 2012-06-05 Danieli & C. Officine Meccaniche S.P.A. Annealing and pickling process
JP2010532428A (en) * 2007-06-29 2010-10-07 アルセロールミタル・フランス Method for producing galvanized or alloyed galvanized steel sheet by DFF adjustment

Also Published As

Publication number Publication date
BE882780A (en) 1980-07-31

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