JPS5573827A - Production of cold-rolled steel plate of superior deep drawability - Google Patents

Production of cold-rolled steel plate of superior deep drawability

Info

Publication number
JPS5573827A
JPS5573827A JP14660078A JP14660078A JPS5573827A JP S5573827 A JPS5573827 A JP S5573827A JP 14660078 A JP14660078 A JP 14660078A JP 14660078 A JP14660078 A JP 14660078A JP S5573827 A JPS5573827 A JP S5573827A
Authority
JP
Japan
Prior art keywords
temperatures
sec
steel plate
temperature
deep drawability
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
JP14660078A
Other languages
Japanese (ja)
Inventor
Hiroshi Takechi
Soji Matsuo
Norimasa Uehara
Tsutomu Fujii
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 JP14660078A priority Critical patent/JPS5573827A/en
Publication of JPS5573827A publication Critical patent/JPS5573827A/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 Steel (AREA)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To accelerate non-aging characteristic and improve deep drawability by progressing the growth of recrystal grains during continuous annealing of the extra- mild Al-killed steel plate containing the specific amount of Al and subjecting the same to over aging treatment at the temperature higher than conventional over aging temperatures. CONSTITUTION:The Al-killed steel containing C; 0.004-0.025%, Mn; 0.05- 0.40%, sol.Al; 0.02-0.10% is hot-rolled and is taken up at temperature of 700 deg.C or less. This is subjected to cold rolling by an ordinary method, after which it is heated to temperatures from 750 deg.C or more up to 850 deg.C at temperature raising rates of 10 deg.C/sec.-60 deg.C/sec. in a continuous annealing furnace and is held in said temperatures for 10-120sec. This annealing causes AlN to grow at the grain boundaries. The steel plate is cool to temperatures of 500 deg.C to A1 point at cooling rates of 5- 50 deg.C/sec. and is then subjected to over aging treatment for 1-3min at said temperatures without applying any strain, thence it is cooled down to room temperature at cooling rates of 50 deg.C/sec. or less. During this time, with AlN as nucleus, the deposition of carbides to the grain boundaries is accelerated.
JP14660078A 1978-11-29 1978-11-29 Production of cold-rolled steel plate of superior deep drawability Pending JPS5573827A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP14660078A JPS5573827A (en) 1978-11-29 1978-11-29 Production of cold-rolled steel plate of superior deep drawability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP14660078A JPS5573827A (en) 1978-11-29 1978-11-29 Production of cold-rolled steel plate of superior deep drawability

Publications (1)

Publication Number Publication Date
JPS5573827A true JPS5573827A (en) 1980-06-03

Family

ID=15411384

Family Applications (1)

Application Number Title Priority Date Filing Date
JP14660078A Pending JPS5573827A (en) 1978-11-29 1978-11-29 Production of cold-rolled steel plate of superior deep drawability

Country Status (1)

Country Link
JP (1) JPS5573827A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS60248823A (en) * 1984-05-23 1985-12-09 Kawasaki Steel Corp Manufacture of steel sheet with high drawability
US4561909A (en) * 1981-08-13 1985-12-31 Kawasaki Steel Corporation Method of manufacturing T-3 grade low temper black plates
EP0952233A1 (en) * 1998-04-21 1999-10-27 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Steel wire rod or bar with good cold deformability and machine parts made thereof
JP2009085837A (en) * 2007-10-01 2009-04-23 Denso Corp Liquid level detector
US10471863B2 (en) 2016-10-14 2019-11-12 Toyota Boshoku Kabushiki Kaisha Vehicle seat

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4561909A (en) * 1981-08-13 1985-12-31 Kawasaki Steel Corporation Method of manufacturing T-3 grade low temper black plates
JPS60248823A (en) * 1984-05-23 1985-12-09 Kawasaki Steel Corp Manufacture of steel sheet with high drawability
EP0952233A1 (en) * 1998-04-21 1999-10-27 KABUSHIKI KAISHA KOBE SEIKO SHO also known as Kobe Steel Ltd. Steel wire rod or bar with good cold deformability and machine parts made thereof
US6217678B1 (en) 1998-04-21 2001-04-17 Kabushiki Kaisha Kobe Seiko Sho Steel wire rod or bar with good cold deformability and machine parts made thereof
JP2009085837A (en) * 2007-10-01 2009-04-23 Denso Corp Liquid level detector
US10471863B2 (en) 2016-10-14 2019-11-12 Toyota Boshoku Kabushiki Kaisha Vehicle seat

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