JPS5726143A - Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture - Google Patents

Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture

Info

Publication number
JPS5726143A
JPS5726143A JP10210980A JP10210980A JPS5726143A JP S5726143 A JPS5726143 A JP S5726143A JP 10210980 A JP10210980 A JP 10210980A JP 10210980 A JP10210980 A JP 10210980A JP S5726143 A JPS5726143 A JP S5726143A
Authority
JP
Japan
Prior art keywords
cold rolled
rolled steel
steel plate
pressing
anisotropy
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
JP10210980A
Other languages
Japanese (ja)
Other versions
JPS61888B2 (en
Inventor
Susumu Sato
Toshio Irie
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 JP10210980A priority Critical patent/JPS5726143A/en
Publication of JPS5726143A publication Critical patent/JPS5726143A/en
Publication of JPS61888B2 publication Critical patent/JPS61888B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To provide the titled cold rolled steel plate for pressing with superior deep drawability and bulgeability by specifying the contents of C, Si, Mn, P, S, N and acid-sol. Al and adding Nb in a specified ratio to C.
CONSTITUTION: Molten steel contg., by wt., ≤0.006% C, ≤0.2% Si, 0.005W0.40 % Mn, ≤0.02% P, ≤0.02% S, ≤0.01% N, 0.1% acid-sol. Al and Nb in a range satisfying log(N%/C%)≥1% and (Nb%-8×C%)≤0.02% is prepared. A slab is made out of this molten steel by continuous casting or other method, and it is hot rolled at ≥90% reduction ratio and ≥40m/sec rolling speed. The resulting hot rolled steel strip is pickled, cold rolled at ≥50% reduction ratio, and subjected to recrystallization annealing with a box annealing furnace at ≥680°C. Thus, a cold rolled steel plate with superior press formability and very low anisotropy in the mechanical characteristics is obtd.
COPYRIGHT: (C)1982,JPO&Japio
JP10210980A 1980-07-25 1980-07-25 Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture Granted JPS5726143A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP10210980A JPS5726143A (en) 1980-07-25 1980-07-25 Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP10210980A JPS5726143A (en) 1980-07-25 1980-07-25 Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture

Related Child Applications (1)

Application Number Title Priority Date Filing Date
JP18275184A Division JPS6164852A (en) 1984-09-03 1984-09-03 Non-aging cold rolled steel sheet for press forming having extremely low anisotropy in plane

Publications (2)

Publication Number Publication Date
JPS5726143A true JPS5726143A (en) 1982-02-12
JPS61888B2 JPS61888B2 (en) 1986-01-11

Family

ID=14318627

Family Applications (1)

Application Number Title Priority Date Filing Date
JP10210980A Granted JPS5726143A (en) 1980-07-25 1980-07-25 Cold rolled steel plate for pressing with very low intrasurface anisotropy and its manufacture

Country Status (1)

Country Link
JP (1) JPS5726143A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143021A (en) * 1983-02-04 1984-08-16 Nippon Steel Corp Production of hot rolled steel sheet having excellent ductility

Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126614A (en) * 1974-08-31 1976-03-05 Nippon Steel Corp ENSEINOICHI JIRUSHIKUSUGURETA ARUMIKIRUDOREIENKOHAN NO SEIZOHO
JPS541245A (en) * 1977-06-06 1979-01-08 Hitachi Ltd Method of etching a1 and a1-based alloy

Patent Citations (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5126614A (en) * 1974-08-31 1976-03-05 Nippon Steel Corp ENSEINOICHI JIRUSHIKUSUGURETA ARUMIKIRUDOREIENKOHAN NO SEIZOHO
JPS541245A (en) * 1977-06-06 1979-01-08 Hitachi Ltd Method of etching a1 and a1-based alloy

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59143021A (en) * 1983-02-04 1984-08-16 Nippon Steel Corp Production of hot rolled steel sheet having excellent ductility
JPH0558044B2 (en) * 1983-02-04 1993-08-25 Nippon Steel Corp

Also Published As

Publication number Publication date
JPS61888B2 (en) 1986-01-11

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