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JPS5770258A - Cold rolled steel sheet to be drawn excellent in seizing harden ability and manufacture thereor - Google Patents

Cold rolled steel sheet to be drawn excellent in seizing harden ability and manufacture thereor

Info

Publication number
JPS5770258A
JPS5770258A JP14595180A JP14595180A JPS5770258A JP S5770258 A JPS5770258 A JP S5770258A JP 14595180 A JP14595180 A JP 14595180A JP 14595180 A JP14595180 A JP 14595180A JP S5770258 A JPS5770258 A JP S5770258A
Authority
JP
Japan
Prior art keywords
seizing
steel sheet
rolled steel
cold rolled
cold
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
JP14595180A
Other languages
Japanese (ja)
Other versions
JPS6017004B2 (en
Inventor
Toshio Irie
Susumu Sato
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 JP55145951A priority Critical patent/JPS6017004B2/en
Priority to US06/395,049 priority patent/US4496400A/en
Priority to EP81902823A priority patent/EP0064552B1/en
Priority to DE8181902823T priority patent/DE3176792D1/en
Priority to PCT/JP1981/000289 priority patent/WO1982001566A1/en
Publication of JPS5770258A publication Critical patent/JPS5770258A/en
Publication of JPS6017004B2 publication Critical patent/JPS6017004B2/en
Expired legal-status Critical Current

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  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE: To produce a cold rolled steel sheet to be drawn excellent in the seizing hardenability, by subjecting a steel material containing specified proportions of C, Mn, Si, P, Al and Nb to cold rolling, continuous annealing and cooling under specified conditions.
CONSTITUTION: A hot rolled steel sheet is prepared from 0.002W0.008wt% of C, 0.005W1.2wt% of Mn, 0.5wt% or more of Si, 0.10wt% or less of P, 0.01W 0.08wt% of Al with the proviso that it is 8 × percentage of N or more, from 3 × percentage of C to 8 × percentage of C+0.02% by weight of Nb, and balance of substantially Fe. After the pickling thereof, it is cold-rolled with a rolling reduction of 60% or more. Then it is heated to a temperature in the range from 750W 900°C, and is retained at that temperature for at least 10sec to be continuously annealed, then is quenched at an average cooling rate of 10°C/sec at least to 650°C, and is slowly cooled after it is cooled to 650°C. Thus, a cold rolled is obrained which has an r value of 1.5 or more, an aging index of 4kg/mm2 or less, and a seizing hard- enability coefficient of 5kg/mm2 or more.
COPYRIGHT: (C)1982,JPO&Japio
JP55145951A 1980-10-18 1980-10-18 Manufacturing method of cold-rolled steel sheet for drawing with excellent bake hardenability Expired JPS6017004B2 (en)

Priority Applications (5)

Application Number Priority Date Filing Date Title
JP55145951A JPS6017004B2 (en) 1980-10-18 1980-10-18 Manufacturing method of cold-rolled steel sheet for drawing with excellent bake hardenability
US06/395,049 US4496400A (en) 1980-10-18 1981-10-19 Thin steel sheet having improved baking hardenability and adapted for drawing and a method of producing the same
EP81902823A EP0064552B1 (en) 1980-10-18 1981-10-19 Thin steel plate for draw working excellent in bake-hardening properties and process for manufacturing same
DE8181902823T DE3176792D1 (en) 1980-10-18 1981-10-19 Thin steel plate for draw working excellent in bake-hardening properties and process for manufacturing same
PCT/JP1981/000289 WO1982001566A1 (en) 1980-10-18 1981-10-19 Thin steel plate for draw working excellent in bake-hardening properties and process for manufacturing same

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP55145951A JPS6017004B2 (en) 1980-10-18 1980-10-18 Manufacturing method of cold-rolled steel sheet for drawing with excellent bake hardenability

Publications (2)

Publication Number Publication Date
JPS5770258A true JPS5770258A (en) 1982-04-30
JPS6017004B2 JPS6017004B2 (en) 1985-04-30

Family

ID=15396801

Family Applications (1)

Application Number Title Priority Date Filing Date
JP55145951A Expired JPS6017004B2 (en) 1980-10-18 1980-10-18 Manufacturing method of cold-rolled steel sheet for drawing with excellent bake hardenability

Country Status (1)

Country Link
JP (1) JPS6017004B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267120A (en) * 1985-09-19 1987-03-26 Kobe Steel Ltd Manufacture of cold rolled steel sheet having superior baking hardenability and vertical cracking resistance further high r value
US5853903A (en) * 1996-05-07 1998-12-29 Nkk Corporation Steel sheet for excellent panel appearance and dent resistance after panel-forming

Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS491969A (en) * 1972-04-24 1974-01-09
JPS49130819A (en) * 1973-04-24 1974-12-14
JPS54100920A (en) * 1978-01-26 1979-08-09 Kobe Steel Ltd Excellently formable high strength cold rolled steel plate and method of producing same
JPS54107415A (en) * 1978-02-09 1979-08-23 Nippon Kokan Kk <Nkk> Cold rolled steel plate with baking hardenability for deep drawing
JPS55115928A (en) * 1979-02-27 1980-09-06 Kawasaki Steel Corp Production of non-aging cold rolled steel plate of excellent deep drawability
JPS6017004A (en) * 1983-07-07 1985-01-28 Nippon Steel Corp Blast furnace operation method

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS491969A (en) * 1972-04-24 1974-01-09
JPS49130819A (en) * 1973-04-24 1974-12-14
JPS54100920A (en) * 1978-01-26 1979-08-09 Kobe Steel Ltd Excellently formable high strength cold rolled steel plate and method of producing same
JPS54107415A (en) * 1978-02-09 1979-08-23 Nippon Kokan Kk <Nkk> Cold rolled steel plate with baking hardenability for deep drawing
JPS55115928A (en) * 1979-02-27 1980-09-06 Kawasaki Steel Corp Production of non-aging cold rolled steel plate of excellent deep drawability
JPS6017004A (en) * 1983-07-07 1985-01-28 Nippon Steel Corp Blast furnace operation method

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6267120A (en) * 1985-09-19 1987-03-26 Kobe Steel Ltd Manufacture of cold rolled steel sheet having superior baking hardenability and vertical cracking resistance further high r value
JPH0548284B2 (en) * 1985-09-19 1993-07-21 Kobe Steel Ltd
US5853903A (en) * 1996-05-07 1998-12-29 Nkk Corporation Steel sheet for excellent panel appearance and dent resistance after panel-forming

Also Published As

Publication number Publication date
JPS6017004B2 (en) 1985-04-30

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