JPS5794522A - Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property - Google Patents

Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property

Info

Publication number
JPS5794522A
JPS5794522A JP17027780A JP17027780A JPS5794522A JP S5794522 A JPS5794522 A JP S5794522A JP 17027780 A JP17027780 A JP 17027780A JP 17027780 A JP17027780 A JP 17027780A JP S5794522 A JPS5794522 A JP S5794522A
Authority
JP
Japan
Prior art keywords
strip
zone
cold rolled
resisting property
rolled steel
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
JP17027780A
Other languages
Japanese (ja)
Inventor
Hiroshi Kuwamoto
Shuichi Iwato
Masaharu Jitsukawa
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 Engineering Corp
Original Assignee
NKK Corp
Nippon Kokan 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 NKK Corp, Nippon Kokan Ltd filed Critical NKK Corp
Priority to JP17027780A priority Critical patent/JPS5794522A/en
Publication of JPS5794522A publication Critical patent/JPS5794522A/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
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals
    • C21D9/48—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals deep-drawing sheets

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)

Abstract

PURPOSE:To obtain a cold rolled steel sheet for drawing having excellent dent resisting property by performing a water hardening on a steel strip after rapidly heating primarily them just before their cooling process terminates, and then, by applying an over aging treatment on them, in the course of continuous treatments of steel strips, and forming a hardened layer of a two-phase structure. CONSTITUTION:A steel strip is gradually cooled to a temperature from which the quenching starts in a primary cooling zone 6 of a continuous anealing furnace after passing through a heating zone 4 and a soaking zone 5. At the outlet side of the primary cooling zone 6, a rapid heating device 11 is installed, and only the surface layer of the strip is heated to a temperature higher than the A1 transformation point just before the cooling process terminates. Then, a water hardening is performed on the strip with a water hardening device 7, and a hardened layer of two-phase structure of martensite and ferrite is formed in the surface layer of the strip. The strip is then coiled by a real 10 after passing through an over aging treatment zone 8 and a final cooling zone 9. When this method is applied, cold rolled steel sheets for drawing having a high yielding point and an excellent dent resisting property are obtained.
JP17027780A 1980-12-04 1980-12-04 Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property Pending JPS5794522A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP17027780A JPS5794522A (en) 1980-12-04 1980-12-04 Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP17027780A JPS5794522A (en) 1980-12-04 1980-12-04 Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property

Publications (1)

Publication Number Publication Date
JPS5794522A true JPS5794522A (en) 1982-06-12

Family

ID=15901958

Family Applications (1)

Application Number Title Priority Date Filing Date
JP17027780A Pending JPS5794522A (en) 1980-12-04 1980-12-04 Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property

Country Status (1)

Country Link
JP (1) JPS5794522A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104831046A (en) * 2015-04-13 2015-08-12 唐山钢铁集团有限责任公司 Production method of ferrite and martensite tissue duplex steel pipe

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104831046A (en) * 2015-04-13 2015-08-12 唐山钢铁集团有限责任公司 Production method of ferrite and martensite tissue duplex steel pipe

Similar Documents

Publication Publication Date Title
GB1389078A (en) Heat treatment of steel sheet for drawing
GB1435651A (en) Continuous annealing furnaces
JPS5558333A (en) Production of non-aging cold rolled steel plate of superior deep-drawability through continuous heat treatment
JPS5591945A (en) Method and equipment for cooling of steel strip in continuous annealing line
JPS5794522A (en) Method for manufacturing cold rolled steel sheet for drawing having excellent dent resisting property
JPS5794528A (en) Continous annealing facility
SU652230A1 (en) Method of thermal treatment of electrical engineering steel
JPS5662928A (en) Furnace temperature setting method of heating zone in a continuous annealing furnace
JPS55110735A (en) Method and equipment for producing galvanized steel plate for deep drawing use
JPS5591929A (en) Method and facility for continuous annealing of cold rolled steel strip
JPS5772702A (en) Manufacture of hot rolled steel strp
SU1039973A1 (en) Method for treating plate rolled stock of low-carbon steel
JPS5723024A (en) Manufacture of ferrite stainless steel plate
US3196053A (en) Production of heat-treated sheets
SU825657A1 (en) Method of treatment of parts
JPS56150127A (en) Direct normalizing method
JPS5719327A (en) Heat treatment device for link chain
SU473748A1 (en) The method of heat treatment of flat products
SU378445A1 (en) METHOD OF THERMOMECHANICAL SURFACE TREATMENT
JPS55164024A (en) Continuous annealing method and apparatus therefor
JPS56114504A (en) Method and apparatus for continuously manufacturing heat treated tapered wire rod
JPS5547319A (en) Manufacture of thin steel sheet according to ultra short time annealing
JPS566708A (en) Gold rolled steel sheet possessing excellent press formability and baking hardenability and its manufacture
JPS56156719A (en) Continuous annealing of cold rolled steel sheet
TH18898EX (en) Method for increasing the drag power of the cold formed steel cross