JPS5524953A - Not thermally refined high strength steel - Google Patents

Not thermally refined high strength steel

Info

Publication number
JPS5524953A
JPS5524953A JP9731678A JP9731678A JPS5524953A JP S5524953 A JPS5524953 A JP S5524953A JP 9731678 A JP9731678 A JP 9731678A JP 9731678 A JP9731678 A JP 9731678A JP S5524953 A JPS5524953 A JP S5524953A
Authority
JP
Japan
Prior art keywords
high strength
strength steel
thermally refined
steel
refined high
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
JP9731678A
Other languages
Japanese (ja)
Other versions
JPS6128742B2 (en
Inventor
Norioki Uehara
Kenji Arikawa
Ryoji Tanaka
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.)
Daido Steel Co Ltd
Original Assignee
Daido 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 Daido Steel Co Ltd filed Critical Daido Steel Co Ltd
Priority to JP9731678A priority Critical patent/JPS5524953A/en
Publication of JPS5524953A publication Critical patent/JPS5524953A/en
Publication of JPS6128742B2 publication Critical patent/JPS6128742B2/ja
Granted legal-status Critical Current

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Landscapes

  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE: Not thermally refined steel is provided with excellent strength equal to that obtained by quenching and annealing, by cooling process after forging or rolling, to obtain ferrite + pearlite structure.
CONSTITUTION: Steel contains C: 0.30 to 0.60%, Si: 0.10 to 1.0%, Mn: 0.20 to 1.70%, N: 0.005 to 0.025% as essential components, one or more of each less than 0.20% of Nb, Ti, and Zr, and further either one or more of Ni<3.5%, Cr<2.0%, and Mo<0.7%, or one or more of S<0.15%, Pb<0.30%, Ca<0.01%, Se< 0.30%, and Te<0.3%. The steel material of above composition is heated to temperature above 1000°C to render Nb, Ti, Zr into solid solution, then hot rolled to be followed either by continuous cooling under the condition ferrite + pearlite structure is formed, or subjected to isothermal transformation.
COPYRIGHT: (C)1980,JPO&Japio
JP9731678A 1978-08-11 1978-08-11 Not thermally refined high strength steel Granted JPS5524953A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP9731678A JPS5524953A (en) 1978-08-11 1978-08-11 Not thermally refined high strength steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP9731678A JPS5524953A (en) 1978-08-11 1978-08-11 Not thermally refined high strength steel

Publications (2)

Publication Number Publication Date
JPS5524953A true JPS5524953A (en) 1980-02-22
JPS6128742B2 JPS6128742B2 (en) 1986-07-02

Family

ID=14189071

Family Applications (1)

Application Number Title Priority Date Filing Date
JP9731678A Granted JPS5524953A (en) 1978-08-11 1978-08-11 Not thermally refined high strength steel

Country Status (1)

Country Link
JP (1) JPS5524953A (en)

Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5789431A (en) * 1980-11-25 1982-06-03 Daido Steel Co Ltd Production of structural steel
JPS57120616A (en) * 1981-01-21 1982-07-27 Daido Steel Co Ltd Production of parts for mechanical structure
JPS57123920A (en) * 1981-01-22 1982-08-02 Daido Steel Co Ltd Production of structural steel
JPS57123921A (en) * 1981-01-23 1982-08-02 Daido Steel Co Ltd Production of structural steel
JPS62119035A (en) * 1985-11-20 1987-05-30 三菱製鋼株式会社 High-strength, heat-resistant and corrosion-resistant clad shape steel and manufacture thereof
JPS62130841A (en) * 1985-12-02 1987-06-13 三菱製鋼株式会社 High strength, heat-resistant and corrosion-resistant clad bar steel for reinforced concrete and manufacture thereof
JPS62187545A (en) * 1986-02-12 1987-08-15 Sumitomo Metal Ind Ltd Production of high-toughness non-tempered steel
JPS62196359A (en) * 1986-02-24 1987-08-29 Sumitomo Metal Ind Ltd Non-heattreated steel for hot forging and production thereof
JPS63130749A (en) * 1986-11-21 1988-06-02 Daido Steel Co Ltd Hot-forging and hardening steel combining high strength with high toughness

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937884A (en) * 1972-08-11 1974-04-08
JPS502620A (en) * 1973-05-14 1975-01-11
JPS5129492A (en) * 1974-09-04 1976-03-12 Sankyo Co Sefuarosuhorinjudotai no seiho

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS4937884A (en) * 1972-08-11 1974-04-08
JPS502620A (en) * 1973-05-14 1975-01-11
JPS5129492A (en) * 1974-09-04 1976-03-12 Sankyo Co Sefuarosuhorinjudotai no seiho

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS6214605B2 (en) * 1980-11-25 1987-04-03 Daido Steel Co Ltd
JPS5789431A (en) * 1980-11-25 1982-06-03 Daido Steel Co Ltd Production of structural steel
JPS57120616A (en) * 1981-01-21 1982-07-27 Daido Steel Co Ltd Production of parts for mechanical structure
JPH0115561B2 (en) * 1981-01-21 1989-03-17 Daido Steel Co Ltd
JPS57123920A (en) * 1981-01-22 1982-08-02 Daido Steel Co Ltd Production of structural steel
JPS6214606B2 (en) * 1981-01-22 1987-04-03 Daido Steel Co Ltd
JPS6233287B2 (en) * 1981-01-23 1987-07-20 Daido Steel Co Ltd
JPS57123921A (en) * 1981-01-23 1982-08-02 Daido Steel Co Ltd Production of structural steel
JPS62119035A (en) * 1985-11-20 1987-05-30 三菱製鋼株式会社 High-strength, heat-resistant and corrosion-resistant clad shape steel and manufacture thereof
JPS62130841A (en) * 1985-12-02 1987-06-13 三菱製鋼株式会社 High strength, heat-resistant and corrosion-resistant clad bar steel for reinforced concrete and manufacture thereof
JPH0258101B2 (en) * 1985-12-02 1990-12-06 Mitsubishi Steel Mfg
JPS62187545A (en) * 1986-02-12 1987-08-15 Sumitomo Metal Ind Ltd Production of high-toughness non-tempered steel
JPS62196359A (en) * 1986-02-24 1987-08-29 Sumitomo Metal Ind Ltd Non-heattreated steel for hot forging and production thereof
JPH0472886B2 (en) * 1986-02-24 1992-11-19 Sumitomo Metal Ind
JPS63130749A (en) * 1986-11-21 1988-06-02 Daido Steel Co Ltd Hot-forging and hardening steel combining high strength with high toughness

Also Published As

Publication number Publication date
JPS6128742B2 (en) 1986-07-02

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