JPS572836A - Production of high strength steel of superior weldability - Google Patents

Production of high strength steel of superior weldability

Info

Publication number
JPS572836A
JPS572836A JP7436880A JP7436880A JPS572836A JP S572836 A JPS572836 A JP S572836A JP 7436880 A JP7436880 A JP 7436880A JP 7436880 A JP7436880 A JP 7436880A JP S572836 A JPS572836 A JP S572836A
Authority
JP
Japan
Prior art keywords
steel
superior
high strength
rem
weldability
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
JP7436880A
Other languages
Japanese (ja)
Other versions
JPS5935414B2 (en
Inventor
Kameo Matsukura
Yoshio Hashimoto
Masaki Nagao
Kazuo Yamamoto
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 JP7436880A priority Critical patent/JPS5935414B2/en
Publication of JPS572836A publication Critical patent/JPS572836A/en
Publication of JPS5935414B2 publication Critical patent/JPS5935414B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To inexpensively obtain high strength steel of superior weldability by rolling a steel contg. specific amounts of C and Mn at above specific temp., and coiling the same at controlled rates of cooling.
CONSTITUTION: The steel consisting of 0.02%≤C≤0.15%, 0.1%≤Mn<0.5% and the balance iron and unavoidable impurities, and, if necessary, further contg. ≤0.015% S, Zr at 2≤Zr/S≤10 or REM at 1.3≤REM/S≤5, or Ca at 0.5≤Ca/ S≤1.5 is produced. This steel is rolled at above Ar3, is cooled at ≥10°C/sec cooling rates from above Ar3, and is coiled at ≤200°C. By this method, the steel plate which has tensile strength and ductility of a 40, 50kg/mm2 class and is superior in spot weldability is obtained at hot rolled at a relatively low cost. This method makes up the tensile strength produced by low Ceq hot rolling conditions while improving welding strength by maintaining low Ceq.
COPYRIGHT: (C)1982,JPO&Japio
JP7436880A 1980-06-04 1980-06-04 Manufacturing method of high-strength steel with excellent weldability Expired JPS5935414B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP7436880A JPS5935414B2 (en) 1980-06-04 1980-06-04 Manufacturing method of high-strength steel with excellent weldability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP7436880A JPS5935414B2 (en) 1980-06-04 1980-06-04 Manufacturing method of high-strength steel with excellent weldability

Publications (2)

Publication Number Publication Date
JPS572836A true JPS572836A (en) 1982-01-08
JPS5935414B2 JPS5935414B2 (en) 1984-08-28

Family

ID=13545142

Family Applications (1)

Application Number Title Priority Date Filing Date
JP7436880A Expired JPS5935414B2 (en) 1980-06-04 1980-06-04 Manufacturing method of high-strength steel with excellent weldability

Country Status (1)

Country Link
JP (1) JPS5935414B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63312207A (en) * 1987-04-28 1988-12-20 ピレリ・コオルディナメント・プネウマティチ．ソチエタ・ペル・アツィオーニ Core reinforcing bead of pneumatic tire for automobile and tire thereof
JP2003093175A (en) * 2001-09-21 2003-04-02 Kokuyo Co Ltd Board storage device

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6124706A (en) * 1984-07-12 1986-02-03 首都高速道路公団 Wind resistant vibration-proof apparatus structure

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS63312207A (en) * 1987-04-28 1988-12-20 ピレリ・コオルディナメント・プネウマティチ．ソチエタ・ペル・アツィオーニ Core reinforcing bead of pneumatic tire for automobile and tire thereof
JP2003093175A (en) * 2001-09-21 2003-04-02 Kokuyo Co Ltd Board storage device

Also Published As

Publication number Publication date
JPS5935414B2 (en) 1984-08-28

Similar Documents

Publication Publication Date Title
CA2172441A1 (en) Hot-rolled steel sheet and method for forming hot-rolled steel sheet having low yield ratio, high strength and excellent toughness
CA2260231A1 (en) Hot-rolled steel strip and method of making it
JPS5687626A (en) Production of high strength low yield ratio high ductility composite structure steel plate of superior workability and high artificial age hardening characteristic after working
JPS5773132A (en) Production of cold rolled mild steel plate of superior deep drawability and aging resistance by continuous annealing
JPS5478318A (en) Manufacture of hot rolled, high tensile steel sheet with high ductility and low yield ratio
JPS57134514A (en) Production of high-tensile steel of superior low- temperature toughness and weldability
JPS57137452A (en) Hot rolled high tensile steel plate having composite structure and its manufacture
JPS6479345A (en) High-strength hot rolled steel plate excellent in workability and its production
JPS572836A (en) Production of high strength steel of superior weldability
JPS5677329A (en) Production of composite structure high tensile cold-rolled steel plate of superior workability
JPS5544590A (en) Production of high tensile thin steel plate of superior cold workability
JPS5773125A (en) Production of alloying-treated zinc hot-dipped steel plate
JPS6455335A (en) Production of high-tensile steel having low yield ratio
JPS56166331A (en) Manufacture of cold rolled steel plate with superior press workability
RU2222610C2 (en) Method of production of cold-rolled strips and sheets
JPS56133424A (en) Manufacture of composite structure type high-tensile hot-rolled steel plate
JPS5747832A (en) Production of high strength cold rolled steel plate of superior deep drawability and working embrittleness resistance
JPS57145925A (en) Production of high strength hot rolled steel plate
JPS56166330A (en) Manufacture of cold rolled steel plate for deep drawing by continuous annealing
JPS5681620A (en) Production of tin base low yield ratio composite structure high tensile steel plate
JPS57104623A (en) Manufacture of high strength and high toughness steel pipe of large diameter
JPS56119723A (en) Manufacture of nonrefined high tensile steel with superior low temperature toughness
JPS56123324A (en) Production of high-strength steel of superior workability
JPS57140823A (en) Production of high tensile electric welded steel pipe of superior toughness
JPS57104650A (en) High-strength hot-rolled steel plate and its manufacture