JPS56139654A - High-tensile cold-rolled steel plate with superior formability and its manufacture - Google Patents

High-tensile cold-rolled steel plate with superior formability and its manufacture

Info

Publication number
JPS56139654A
JPS56139654A JP4184480A JP4184480A JPS56139654A JP S56139654 A JPS56139654 A JP S56139654A JP 4184480 A JP4184480 A JP 4184480A JP 4184480 A JP4184480 A JP 4184480A JP S56139654 A JPS56139654 A JP S56139654A
Authority
JP
Japan
Prior art keywords
manufacture
rolling
rolled steel
steel plate
cold rolled
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
JP4184480A
Other languages
Japanese (ja)
Other versions
JPS5940215B2 (en
Inventor
Toshio Irie
Susumu Sato
Osamu Hashimoto
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 JP4184480A priority Critical patent/JPS5940215B2/en
Priority to US06/328,578 priority patent/US4473414A/en
Priority to PCT/JP1981/000068 priority patent/WO1981002900A1/en
Priority to DE8181900756T priority patent/DE3164521D1/en
Priority to EP81900756A priority patent/EP0048761B1/en
Priority to AU69251/81A priority patent/AU531754B2/en
Publication of JPS56139654A publication Critical patent/JPS56139654A/en
Priority to US06/627,839 priority patent/US4544419A/en
Publication of JPS5940215B2 publication Critical patent/JPS5940215B2/en
Expired legal-status Critical Current

Links

Landscapes

  • Heat Treatment Of Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE: To manufacture the titled steel plate at a low cost by hot rolling a steel slab contg. C, Nb, Al, N, P, Si and Mn, carrying out cold rolling, and cooling the resulting cold rolled steel strip at a predetermined cooling rate after continuous annealing.
CONSTITUTION: A steel slab is hot rolled consisiting of 0.002W0.015% C, C%×3W (C%×8+0.020%) Nb, ≥0.02% and ≥N%×4 Al, 0.03W0,10% P, ≤1.2% Si, 0.04W0.8% Mn and the balance essentially Fe. At this time, the total reduction ratio is adjusted to ≥90%, the rolling speed of finish rolling to ≥40m/min, and coiling is carried out at ≥600°C to obtain a hot rolled coil. This coil is cold rolled to the final thickness. The resulting cold rolled steel strip is continuously annealed at 700W900°C for 10secW5min and cooled to at least 500°C at ≥60°C/min, preferably about 5W30°C/sec cooling rate.
COPYRIGHT: (C)1981,JPO&Japio
JP4184480A 1980-03-31 1980-03-31 High tensile strength cold rolled steel sheet with excellent formability and its manufacturing method Expired JPS5940215B2 (en)

Priority Applications (7)

Application Number Priority Date Filing Date Title
JP4184480A JPS5940215B2 (en) 1980-03-31 1980-03-31 High tensile strength cold rolled steel sheet with excellent formability and its manufacturing method
US06/328,578 US4473414A (en) 1980-03-31 1981-03-30 High tensile strength cold rolled steel sheets and high tensile strength hot-dip galvanized steel sheets
PCT/JP1981/000068 WO1981002900A1 (en) 1980-03-31 1981-03-30 High-tensile,cold-rolled steel plate with excellent formability and process for its production,as well as high-tensile,galvanized steel plate with excellent formability,and process for its produciton
DE8181900756T DE3164521D1 (en) 1980-03-31 1981-03-30 High-tensile, cold-rolled steel plate with excellent formability and process for its production, as well as high-tensile, galvanized steel plate with excellent formability, and process for its production
EP81900756A EP0048761B1 (en) 1980-03-31 1981-03-30 High-tensile, cold-rolled steel plate with excellent formability and process for its production, as well as high-tensile, galvanized steel plate with excellent formability, and process for its production
AU69251/81A AU531754B2 (en) 1980-03-31 1981-03-30 High-tensile,cold-rolled steel plate and high tensile, galvanized steel plate both with excellent formability, and process for its production
US06/627,839 US4544419A (en) 1980-03-31 1984-07-05 Method for producing high tensile strength cold rolled steel sheets having excellent formability and high tensile strength hot-dip galvanized steel sheets having excellent formability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP4184480A JPS5940215B2 (en) 1980-03-31 1980-03-31 High tensile strength cold rolled steel sheet with excellent formability and its manufacturing method

Publications (2)

Publication Number Publication Date
JPS56139654A true JPS56139654A (en) 1981-10-31
JPS5940215B2 JPS5940215B2 (en) 1984-09-28

Family

ID=12619557

Family Applications (1)

Application Number Title Priority Date Filing Date
JP4184480A Expired JPS5940215B2 (en) 1980-03-31 1980-03-31 High tensile strength cold rolled steel sheet with excellent formability and its manufacturing method

Country Status (1)

Country Link
JP (1) JPS5940215B2 (en)

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384206A (en) * 1991-03-15 1995-01-24 Nippon Steel Corporation High-strength cold-rolled steel strip and molten zinc-plated high-strength cold-rolled steel strip having good formability and method of producing such strips
EP0719868A1 (en) * 1994-12-26 1996-07-03 Kawasaki Steel Corporation Steel sheet for automobiles having excellent impact resistance and method of manufacturing the steel sheet
US7686896B2 (en) 2003-09-26 2010-03-30 Jfe Steel Corporation High-strength steel sheet excellent in deep drawing characteristics and method for production thereof
WO2011118421A1 (en) 2010-03-26 2011-09-29 Ｊｆｅスチール株式会社 Method for producing high-strength steel plate having superior deep drawing characteristics
EP2415894A2 (en) 2001-08-24 2012-02-08 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same
KR20140044938A (en) 2011-08-26 2014-04-15 제이에프이 스틸 가부시키가이샤 High strength hot dip galvanized steel sheet having excellent deep-drawability, and method for producing same
KR20140098192A (en) 2011-12-08 2014-08-07 제이에프이 스틸 가부시키가이샤 Method for manufacturing high-strength cold-rolled steel sheet having excellent aging resistance and bake hardenability
CN105195510A (en) * 2015-09-17 2015-12-30 武汉钢铁(集团)公司 8B cold-rolling precision steel belt and manufacturing method thereof
CN106119495A (en) * 2016-08-19 2016-11-16 武汉钢铁股份有限公司 A kind of manufacture method of cold rolling medium high carbon structural steel
WO2021205943A1 (en) 2020-04-07 2021-10-14 日本製鉄株式会社 Steel plate

Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US5384206A (en) * 1991-03-15 1995-01-24 Nippon Steel Corporation High-strength cold-rolled steel strip and molten zinc-plated high-strength cold-rolled steel strip having good formability and method of producing such strips
EP0719868A1 (en) * 1994-12-26 1996-07-03 Kawasaki Steel Corporation Steel sheet for automobiles having excellent impact resistance and method of manufacturing the steel sheet
EP2415894A2 (en) 2001-08-24 2012-02-08 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same
EP2415893A2 (en) 2001-08-24 2012-02-08 Nippon Steel Corporation Steel sheet excellent in workability and method for producing the same
US7686896B2 (en) 2003-09-26 2010-03-30 Jfe Steel Corporation High-strength steel sheet excellent in deep drawing characteristics and method for production thereof
WO2011118421A1 (en) 2010-03-26 2011-09-29 Ｊｆｅスチール株式会社 Method for producing high-strength steel plate having superior deep drawing characteristics
KR20140044938A (en) 2011-08-26 2014-04-15 제이에프이 스틸 가부시키가이샤 High strength hot dip galvanized steel sheet having excellent deep-drawability, and method for producing same
US9175374B2 (en) 2011-08-26 2015-11-03 Jfe Steel Corporation High strength hot-dip galvanized steel sheet having excellent deep drawability
KR20140098192A (en) 2011-12-08 2014-08-07 제이에프이 스틸 가부시키가이샤 Method for manufacturing high-strength cold-rolled steel sheet having excellent aging resistance and bake hardenability
CN105195510A (en) * 2015-09-17 2015-12-30 武汉钢铁(集团)公司 8B cold-rolling precision steel belt and manufacturing method thereof
CN106119495A (en) * 2016-08-19 2016-11-16 武汉钢铁股份有限公司 A kind of manufacture method of cold rolling medium high carbon structural steel
CN106119495B (en) * 2016-08-19 2019-02-01 武汉钢铁有限公司 A kind of manufacturing method of cold rolling medium high carbon structural steel
WO2021205943A1 (en) 2020-04-07 2021-10-14 日本製鉄株式会社 Steel plate
KR20220156645A (en) 2020-04-07 2022-11-25 닛폰세이테츠 가부시키가이샤 steel plate

Also Published As

Publication number Publication date
JPS5940215B2 (en) 1984-09-28

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