JPS55110734A - Producing method of al killed cold rolled high tensile steel plate - Google Patents

Producing method of al killed cold rolled high tensile steel plate

Info

Publication number
JPS55110734A
JPS55110734A JP1924679A JP1924679A JPS55110734A JP S55110734 A JPS55110734 A JP S55110734A JP 1924679 A JP1924679 A JP 1924679A JP 1924679 A JP1924679 A JP 1924679A JP S55110734 A JPS55110734 A JP S55110734A
Authority
JP
Japan
Prior art keywords
steel plate
temperature
batch type
high tensile
type annealing
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
JP1924679A
Other languages
Japanese (ja)
Other versions
JPS5910413B2 (en
Inventor
Masuhiro Sato
Hiroshi Aketo
Shingo Nomura
Kazuhiko Gunda
Kunio Kawamoto
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.)
Kobe Steel Ltd
Original Assignee
Kobe Steel 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 Kobe Steel Ltd filed Critical Kobe Steel Ltd
Priority to JP1924679A priority Critical patent/JPS5910413B2/en
Publication of JPS55110734A publication Critical patent/JPS55110734A/en
Publication of JPS5910413B2 publication Critical patent/JPS5910413B2/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

Abstract

PURPOSE:To provide an excellent baking hardenability and resistance to dent in batch type annealing process by a method wherein the quantity of Mn, P, Al, Si, and C contents in Al killed steel is limited to specific values and annealing condition after cold rolling is properly adjusted. CONSTITUTION:Al killed steel material contg. Mn: 0.2-0.6%, P: 0.04-0.15%, Al: 0.02-0.08%, C<=0.10%, Si<0.04% is made to steel plate by hot rolling at a finish temperature higher than Ar3 transformation temperature, then the steel plate is wound loose at a temperature less than 600 deg.C. The steel plate is processed by surface pickling, scale removal, and cold-rolling at reduction ratio of 40% or more. This is charged in a batch type annealing furnace, rapidly heated at a rate of 50-100 deg.C/hr., then is annealed at a temperature between recrystallization temperature and 750 deg.C for a specified period of time. Next, the plate is cooled at a rate of 0.15-0.6T deg.C/hr., where T deg.C represents any temperature during cooling operation. Although batch type annealing is used, this process provides a high tensile steel plate for automobile having good surface property, press workability, tensile strength, baking hardenability, and antident property.
JP1924679A 1979-02-20 1979-02-20 Manufacturing method of Al-killed cold-rolled high-strength steel sheet Expired JPS5910413B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP1924679A JPS5910413B2 (en) 1979-02-20 1979-02-20 Manufacturing method of Al-killed cold-rolled high-strength steel sheet

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP1924679A JPS5910413B2 (en) 1979-02-20 1979-02-20 Manufacturing method of Al-killed cold-rolled high-strength steel sheet

Publications (2)

Publication Number Publication Date
JPS55110734A true JPS55110734A (en) 1980-08-26
JPS5910413B2 JPS5910413B2 (en) 1984-03-08

Family

ID=11994045

Family Applications (1)

Application Number Title Priority Date Filing Date
JP1924679A Expired JPS5910413B2 (en) 1979-02-20 1979-02-20 Manufacturing method of Al-killed cold-rolled high-strength steel sheet

Country Status (1)

Country Link
JP (1) JPS5910413B2 (en)

Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001566A1 (en) * 1980-10-18 1982-05-13 Irie Toshio Thin steel plate for draw working excellent in bake-hardening properties and process for manufacturing same
JPS5779162A (en) * 1980-11-04 1982-05-18 Sumitomo Metal Ind Ltd Production of alloyed zinc hot dipped steel plate
JPS57181361A (en) * 1981-04-28 1982-11-08 Nippon Steel Corp Large-sized cold rolled steel plate for forming with superior tensile rigidity and its manufacture
JPS5852432A (en) * 1981-09-19 1983-03-28 Sumitomo Metal Ind Ltd Production of thermally hardenable thin steel sheet
JPS60144658U (en) * 1984-02-29 1985-09-25 リグナイト株式会社 Corrosion-resistant structure of steel sheet piles
JPS62139848A (en) * 1985-12-11 1987-06-23 Kobe Steel Ltd High strength and high ductility cold rolled steel sheet for automobile strengthening member
WO2003018857A1 (en) * 2001-08-24 2003-03-06 Nippon Steel Corporation Steel plate exhibiting excellent workability and method for producing the same
WO2010125848A1 (en) * 2009-04-28 2010-11-04 Ｊｆｅスチール株式会社 Cold-rolled steel sheet with excellent formability, shape retentivity, and surface appearance and process for producing same

Cited By (21)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO1982001566A1 (en) * 1980-10-18 1982-05-13 Irie Toshio Thin steel plate for draw working excellent in bake-hardening properties and process for manufacturing same
JPS5779162A (en) * 1980-11-04 1982-05-18 Sumitomo Metal Ind Ltd Production of alloyed zinc hot dipped steel plate
JPS6114218B2 (en) * 1980-11-04 1986-04-17 Sumitomo Metal Ind
JPS57181361A (en) * 1981-04-28 1982-11-08 Nippon Steel Corp Large-sized cold rolled steel plate for forming with superior tensile rigidity and its manufacture
JPS6233290B2 (en) * 1981-04-28 1987-07-20 Nippon Steel Corp
JPS5852432A (en) * 1981-09-19 1983-03-28 Sumitomo Metal Ind Ltd Production of thermally hardenable thin steel sheet
JPS60144658U (en) * 1984-02-29 1985-09-25 リグナイト株式会社 Corrosion-resistant structure of steel sheet piles
JPH0342112Y2 (en) * 1984-02-29 1991-09-04
JPS62139848A (en) * 1985-12-11 1987-06-23 Kobe Steel Ltd High strength and high ductility cold rolled steel sheet for automobile strengthening member
EP1431407A4 (en) * 2001-08-24 2006-01-04 Nippon Steel Corp Steel plate exhibiting excellent workability and method for producing the same
WO2003018857A1 (en) * 2001-08-24 2003-03-06 Nippon Steel Corporation Steel plate exhibiting excellent workability and method for producing the same
US7534312B2 (en) 2001-08-24 2009-05-19 Nippon Steel Corporation Steel plate exhibiting excellent workability and method for producing the same
US7749343B2 (en) * 2001-08-24 2010-07-06 Nippon Steel Corporation Method to produce steel sheet excellent in workability
US7776161B2 (en) 2001-08-24 2010-08-17 Nippon Steel Corporation Cold-rolled steel sheet excellent in workability
US8052807B2 (en) 2001-08-24 2011-11-08 Nippon Steel Corporation Steel sheet excellent in workability
EP2415893A3 (en) * 2001-08-24 2012-10-17 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same
EP2415894A3 (en) * 2001-08-24 2012-10-17 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same
WO2010125848A1 (en) * 2009-04-28 2010-11-04 Ｊｆｅスチール株式会社 Cold-rolled steel sheet with excellent formability, shape retentivity, and surface appearance and process for producing same
JP2010255069A (en) * 2009-04-28 2010-11-11 Jfe Steel Corp Cold-rolled steel sheet excellent in formability, shape-fixability and surface-appearance, and manufacturing method therefor
EP2431490A1 (en) * 2009-04-28 2012-03-21 JFE Steel Corporation Cold-rolled steel sheet with excellent formability, shape retentivity, and surface appearance and process for producing same
EP2431490A4 (en) * 2009-04-28 2012-10-31 Jfe Steel Corp Cold-rolled steel sheet with excellent formability, shape retentivity, and surface appearance and process for producing same

Also Published As

Publication number Publication date
JPS5910413B2 (en) 1984-03-08

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