JPS56119758A - Special steel strip with superior punchability and its manufacture - Google Patents

Special steel strip with superior punchability and its manufacture

Info

Publication number
JPS56119758A
JPS56119758A JP2436680A JP2436680A JPS56119758A JP S56119758 A JPS56119758 A JP S56119758A JP 2436680 A JP2436680 A JP 2436680A JP 2436680 A JP2436680 A JP 2436680A JP S56119758 A JPS56119758 A JP S56119758A
Authority
JP
Japan
Prior art keywords
steel
manufacture
hot rolled
annealing
steel strip
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
JP2436680A
Other languages
Japanese (ja)
Other versions
JPH0219173B2 (en
Inventor
Kenichi Shinoda
Hideo Miyake
Harumi Ishii
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 Nisshin Co Ltd
Original Assignee
Nisshin Steel Co 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 Nisshin Steel Co Ltd filed Critical Nisshin Steel Co Ltd
Priority to JP2436680A priority Critical patent/JPS56119758A/en
Publication of JPS56119758A publication Critical patent/JPS56119758A/en
Publication of JPH0219173B2 publication Critical patent/JPH0219173B2/ja
Granted legal-status Critical Current

Links

Landscapes

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

Abstract

PURPOSE: To manufacture the titled steel strip causing a low crashing sound and little wear of dies by punching by converting carbide in a hot rolled steel having a specified composition contg. C, Mn, sol. Al and Si into spindle-shaped or nodular graphite in an annealing process.
CONSTITUTION: A steel consisting of, by weight, 0.5W1.2% C, ≤0.50% Mn, 0.020W0.060% soln. Al, (1.16-5/7×%C)W(1.63-6/7×%C) Si and the balance Fe and inevitable impurities is hot rolled, and this hot rolled steel is subjected to cold rolling and annealing twice or more to convert carbide in the steel into spindle- shaped or nodular graphite in the annealing process. The dispersion density of the graphite in the steel is properly adjusted by controlling the annealing temp. after cold rolling.
COPYRIGHT: (C)1981,JPO&Japio
JP2436680A 1980-02-28 1980-02-28 Special steel strip with superior punchability and its manufacture Granted JPS56119758A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2436680A JPS56119758A (en) 1980-02-28 1980-02-28 Special steel strip with superior punchability and its manufacture

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2436680A JPS56119758A (en) 1980-02-28 1980-02-28 Special steel strip with superior punchability and its manufacture

Publications (2)

Publication Number Publication Date
JPS56119758A true JPS56119758A (en) 1981-09-19
JPH0219173B2 JPH0219173B2 (en) 1990-04-27

Family

ID=12136186

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2436680A Granted JPS56119758A (en) 1980-02-28 1980-02-28 Special steel strip with superior punchability and its manufacture

Country Status (1)

Country Link
JP (1) JPS56119758A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02107742A (en) * 1988-10-14 1990-04-19 Kawasaki Steel Corp Steel stock excellent in workability and hardenability

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838054A (en) * 1971-09-16 1973-06-05
JPS4967816A (en) * 1972-11-02 1974-07-01
JPS4967817A (en) * 1972-11-06 1974-07-01
JPS51120919A (en) * 1975-04-15 1976-10-22 Sumitomo Metal Ind Ltd Structural steel with excellent machinability
JPS5429820A (en) * 1977-08-10 1979-03-06 Kawasaki Steel Co Heat rolled band steel for steel pipe having good pipe expandability

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4838054A (en) * 1971-09-16 1973-06-05
JPS4967816A (en) * 1972-11-02 1974-07-01
JPS4967817A (en) * 1972-11-06 1974-07-01
JPS51120919A (en) * 1975-04-15 1976-10-22 Sumitomo Metal Ind Ltd Structural steel with excellent machinability
JPS5429820A (en) * 1977-08-10 1979-03-06 Kawasaki Steel Co Heat rolled band steel for steel pipe having good pipe expandability

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH02107742A (en) * 1988-10-14 1990-04-19 Kawasaki Steel Corp Steel stock excellent in workability and hardenability
JPH0579743B2 (en) * 1988-10-14 1993-11-04 Kawasaki Steel Co

Also Published As

Publication number Publication date
JPH0219173B2 (en) 1990-04-27

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