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JPS5696019A - Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength - Google Patents

Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength

Info

Publication number
JPS5696019A
JPS5696019A JP17159379A JP17159379A JPS5696019A JP S5696019 A JPS5696019 A JP S5696019A JP 17159379 A JP17159379 A JP 17159379A JP 17159379 A JP17159379 A JP 17159379A JP S5696019 A JPS5696019 A JP S5696019A
Authority
JP
Japan
Prior art keywords
cold
low yield
yield ratio
steel
rolled sheet
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
JP17159379A
Other languages
Japanese (ja)
Other versions
JPS6142767B2 (en
Inventor
Takaaki Yuzutori
Rikuro Ogawa
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 JP17159379A priority Critical patent/JPS5696019A/en
Publication of JPS5696019A publication Critical patent/JPS5696019A/en
Publication of JPS6142767B2 publication Critical patent/JPS6142767B2/ja
Granted 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

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

Abstract

PURPOSE:To obtain a composite structure type cold-rolled sheet steel having superior strength-ductility balance and a low yield ratio by hot rolling a steel consisting essentially of C, Mn, Si at specific temp. and cumulative draft and cold rolling, continuously annealing the same in a two phase area. CONSTITUTION:The steel consisting essentially of 0.01-0.18% C, 0.8-2.2% Mn and <=1.0% Si and the balance consisting of iron and unavoidable impurities is prepd. This steel is hot-rolled at below 950 deg.C, and >=50% cumulative draft to apply strong working to the austenite before transformation. Thence, it is cold- rolled, after which it is subjected to continuous annealing in a two phase area of ferrite phase and austenite phase. By this method, the cold-rolled sheet steel of low yield ratio, high ductility and high strength suitable for severe forming applications is obtained.
JP17159379A 1979-12-28 1979-12-28 Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength Granted JPS5696019A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17159379A JPS5696019A (en) 1979-12-28 1979-12-28 Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17159379A JPS5696019A (en) 1979-12-28 1979-12-28 Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength

Publications (2)

Publication Number Publication Date
JPS5696019A true JPS5696019A (en) 1981-08-03
JPS6142767B2 JPS6142767B2 (en) 1986-09-24

Family

ID=15926029

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17159379A Granted JPS5696019A (en) 1979-12-28 1979-12-28 Production of cold-rolled sheet steel having low yield ratio, high ductility, high strength

Country Status (1)

Country Link
JP (1) JPS5696019A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044434A1 (en) * 2000-11-28 2002-06-06 Kawasaki Steel Corporation Composite structure type high tensile strength steel plate, plated plate of composite structure type high tensile strength steel and method for their production
CN111621718A (en) * 2020-06-28 2020-09-04 马鞍山钢铁股份有限公司 Steel for high-ductility cold-rolled steel bar for welded mesh and production method thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142012A (en) * 1974-10-09 1976-04-09 Nippon Steel Corp HIZUMIJIKOKOKANONOSUGUURETA KOKYO DOREIENKOHANNO SEIZOHOHO

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5142012A (en) * 1974-10-09 1976-04-09 Nippon Steel Corp HIZUMIJIKOKOKANONOSUGUURETA KOKYO DOREIENKOHANNO SEIZOHOHO

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2002044434A1 (en) * 2000-11-28 2002-06-06 Kawasaki Steel Corporation Composite structure type high tensile strength steel plate, plated plate of composite structure type high tensile strength steel and method for their production
CN111621718A (en) * 2020-06-28 2020-09-04 马鞍山钢铁股份有限公司 Steel for high-ductility cold-rolled steel bar for welded mesh and production method thereof
CN111621718B (en) * 2020-06-28 2021-12-14 马鞍山钢铁股份有限公司 Steel for high-ductility cold-rolled steel bar for welded mesh and production method thereof

Also Published As

Publication number Publication date
JPS6142767B2 (en) 1986-09-24

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