JPS54131524A - High-ductile, low-yield ratio, high-tensile, heat rolled steel plate production - Google Patents

High-ductile, low-yield ratio, high-tensile, heat rolled steel plate production

Info

Publication number
JPS54131524A
JPS54131524A JP3881778A JP3881778A JPS54131524A JP S54131524 A JPS54131524 A JP S54131524A JP 3881778 A JP3881778 A JP 3881778A JP 3881778 A JP3881778 A JP 3881778A JP S54131524 A JPS54131524 A JP S54131524A
Authority
JP
Japan
Prior art keywords
steel plate
yield ratio
steel
ductile
tensile
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
JP3881778A
Other languages
Japanese (ja)
Other versions
JPS5848616B2 (en
Inventor
Kunio Watanabe
Yoshio Hashimoto
Takashi Furukawa
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 JP3881778A priority Critical patent/JPS5848616B2/en
Publication of JPS54131524A publication Critical patent/JPS54131524A/en
Publication of JPS5848616B2 publication Critical patent/JPS5848616B2/en
Expired 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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips

Abstract

PURPOSE:A steel material containing a specified amount of Si, Mn, etc. is heat rolled and wound at a temperature less than 350 deg. so that a high-ductile, low-yield ratio, high-tensile steel plate is produced. CONSTITUTION:A steel is used containing C: 0.05 to 0.15%, Si: 0.71 to 2.0%, Mn: 0.5 to 2.0%, S<=0.015%, and Zr and rare earth elements being in an amount such that Zr/S: 2 to 10%, rare earth elements/si: 1.3 to 5. Such steel slab is heat rolled at a temperature of Ar3 to (Ar3+60) deg.C to produce a steel plate, which is wound into coil below 350 deg.C. In this composition, Si is useful to enhance ductility, Mn addition and S reduction are effective in strength increase, reduced MnS inclusive, and the reduction of required amount of Zr and rare earth elements. Further, the content of more than 0.71% Si and the steel winding condition below 350 deg.C effectively reduces the yield ratio to less than 70%.
JP3881778A 1978-04-04 1978-04-04 Manufacturing method for low yield ratio hot-rolled high-strength steel plate with excellent ductility Expired JPS5848616B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP3881778A JPS5848616B2 (en) 1978-04-04 1978-04-04 Manufacturing method for low yield ratio hot-rolled high-strength steel plate with excellent ductility

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP3881778A JPS5848616B2 (en) 1978-04-04 1978-04-04 Manufacturing method for low yield ratio hot-rolled high-strength steel plate with excellent ductility

Publications (2)

Publication Number Publication Date
JPS54131524A true JPS54131524A (en) 1979-10-12
JPS5848616B2 JPS5848616B2 (en) 1983-10-29

Family

ID=12535812

Family Applications (1)

Application Number Title Priority Date Filing Date
JP3881778A Expired JPS5848616B2 (en) 1978-04-04 1978-04-04 Manufacturing method for low yield ratio hot-rolled high-strength steel plate with excellent ductility

Country Status (1)

Country Link
JP (1) JPS5848616B2 (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56136929A (en) * 1980-03-26 1981-10-26 Sumitomo Metal Ind Ltd Production of composite structure type high tensile hot rolled steel plate having high ductility and low yield ratio
JPS5811734A (en) * 1981-07-15 1983-01-22 Nippon Steel Corp Production of high-strength hot-rolled steel plate of superior workability and weldability
JPS59177325A (en) * 1983-03-28 1984-10-08 Nippon Steel Corp Manufacture of hot rolled bainitic steel plate with high strength

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS56136929A (en) * 1980-03-26 1981-10-26 Sumitomo Metal Ind Ltd Production of composite structure type high tensile hot rolled steel plate having high ductility and low yield ratio
JPS5914092B2 (en) * 1980-03-26 1984-04-03 住友金属工業株式会社 Manufacturing method of composite structure type high tensile strength hot rolled steel sheet with high ductility and low yield ratio
JPS5811734A (en) * 1981-07-15 1983-01-22 Nippon Steel Corp Production of high-strength hot-rolled steel plate of superior workability and weldability
JPS623214B2 (en) * 1981-07-15 1987-01-23 Nippon Steel Corp
JPS59177325A (en) * 1983-03-28 1984-10-08 Nippon Steel Corp Manufacture of hot rolled bainitic steel plate with high strength
JPS6337166B2 (en) * 1983-03-28 1988-07-25 Nippon Steel Corp

Also Published As

Publication number Publication date
JPS5848616B2 (en) 1983-10-29

Similar Documents

Publication Publication Date Title
JPS54131525A (en) Production of high-ductile, low-yield ratio type, high- tensile, heat rolled steel plate
JPS5719359A (en) Cold-rolled steel plate with high strength for pressing
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
JPS56142852A (en) High strength cold rolled steel plate of low yield ratio for deep drawing
EP0263413A3 (en) Non-oriented electrical steel sheets and producing non-oriented steel sheets
ES441611A1 (en) Method for the production of high-permeability magnetic steel
JPS54131524A (en) High-ductile, low-yield ratio, high-tensile, heat rolled steel plate production
JPS6479345A (en) High-strength hot rolled steel plate excellent in workability and its production
ES8107320A1 (en) Weldable Steel Rods
JPS5651553A (en) High strength hot rolled steel sheet for both-side enameling
ES8302789A1 (en) Method for producing grain- oriented silicon steel
JPS5521517A (en) Manufacture of hot-rolled coil
JPS5723025A (en) Manufacture of hot-rolled high tensile steel plate having excellent local ductility
EP0333221A3 (en) Process for producing grain-oriented thin electrical steel sheet having high magnetic flux density by one-stage cold-rolling method
JPS5681620A (en) Production of tin base low yield ratio composite structure high tensile steel plate
JPS5633428A (en) Manufacture of hot rolled high tensile steel sheet
JPS51143514A (en) Process for producing manganese addition agent for iron and steel
JPS5531182A (en) High strength cold rolled steel plate with superior workability and manufacture thereof
JPS6455339A (en) Production of grain-oriented silicon iron alloy thin band
JPS5684419A (en) Production of low yield-ratio high-tension hot-rolled steel-plate
JPS5633427A (en) Manufacture of hot rolled high tensile steel sheet
JPS55100927A (en) Production of non-directional silicon steel sheet having less aging deterioration and good surface property
JPS5716114A (en) Manufacture of steel for hardening by high frequency
JPS5510322A (en) Covered electrode for cryogenic steel welding
JPS55119151A (en) Nonrefined high tensile steel plate with low yield ratio