JPS5544590A - Production of high tensile thin steel plate of superior cold workability - Google Patents

Production of high tensile thin steel plate of superior cold workability

Info

Publication number
JPS5544590A
JPS5544590A JP11902178A JP11902178A JPS5544590A JP S5544590 A JPS5544590 A JP S5544590A JP 11902178 A JP11902178 A JP 11902178A JP 11902178 A JP11902178 A JP 11902178A JP S5544590 A JPS5544590 A JP S5544590A
Authority
JP
Japan
Prior art keywords
steel plate
specified
thin steel
cooling rate
production
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
JP11902178A
Other languages
Japanese (ja)
Other versions
JPS5818971B2 (en
Inventor
Masahiko Morita
Isao Ito
Takeo Tono
Teruyuki Nishide
Yoshihiro Saito
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 JP53119021A priority Critical patent/JPS5818971B2/en
Publication of JPS5544590A publication Critical patent/JPS5544590A/en
Publication of JPS5818971B2 publication Critical patent/JPS5818971B2/en
Expired legal-status Critical Current

Links

Abstract

PURPOSE: To obtain the captioned steel plate inexpensively with good efficiency by rolling the steel of the specified composition under specified draft while controlling and cooling the same at above the specified mean cooling rate from above the specified temperature then quenching the same thereby forming martensite phase thence coiling the steel plate.
CONSTITUTION: The steel of C; 0.05W0.25%, Mn; 0.1W2%, Si; 1% or under and the rest Fe in weight % is rolled so that the total draft becomes 20W90% while it is being controlled and cooled so that the mean cooling rate or higher of the separately mentioned formula II is reached from the temperature of the separately mentioned formula I or higher. Next, this thin steel plate is quenched immediately upon ending of the rolling to let martensite phase be formed, after which it is taken up to a coil. In the formulas, Tsc(°C); the critical value of the control cooling start temperature of the foregoing steel plate. αc; the critical value of the mean cooling rate. R; the total draft at the control cooling.
COPYRIGHT: (C)1980,JPO&Japio
JP53119021A 1978-09-26 1978-09-26 Method for manufacturing high-strength thin steel sheets with excellent cold workability Expired JPS5818971B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP53119021A JPS5818971B2 (en) 1978-09-26 1978-09-26 Method for manufacturing high-strength thin steel sheets with excellent cold workability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP53119021A JPS5818971B2 (en) 1978-09-26 1978-09-26 Method for manufacturing high-strength thin steel sheets with excellent cold workability

Publications (2)

Publication Number Publication Date
JPS5544590A true JPS5544590A (en) 1980-03-28
JPS5818971B2 JPS5818971B2 (en) 1983-04-15

Family

ID=14751012

Family Applications (1)

Application Number Title Priority Date Filing Date
JP53119021A Expired JPS5818971B2 (en) 1978-09-26 1978-09-26 Method for manufacturing high-strength thin steel sheets with excellent cold workability

Country Status (1)

Country Link
JP (1) JPS5818971B2 (en)

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126916A (en) * 1981-01-29 1982-08-06 Sumitomo Metal Ind Ltd Production of high-tensile strength steel sheet excellent in workability and weldability
JPS58210125A (en) * 1982-06-01 1983-12-07 Sumitomo Metal Ind Ltd Production of strong and tough high tensile steel plate by direct hardening method
JPS6039119A (en) * 1983-08-11 1985-02-28 Sumitomo Metal Ind Ltd Manufacture of hot-rolled high-tension steel plate
JPS61257457A (en) * 1985-05-07 1986-11-14 Kobe Steel Ltd Steel sheet for laser processing having superior fatigue characteristic
JPS62142726A (en) * 1985-12-18 1987-06-26 Kobe Steel Ltd Manufacture of wear resistant steel sheet having satisfactory weldability
CN105369021A (en) * 2015-12-11 2016-03-02 武汉钢铁(集团)公司 On-line quenching and cooling method taking account of shape and performance of thin-specification high-strength steel plate

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS59126797A (en) * 1982-12-31 1984-07-21 Bunzo Hirano Washing device of electrodeposition painting
JPS60883A (en) * 1983-06-16 1985-01-05 Nitto Electric Ind Co Ltd Operating method of membrane separator

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516811A (en) * 1974-07-09 1976-01-20 Nippon Steel Corp Ihoseinonai koenseikokyodokoto sonoseizohoho
JPS5112317A (en) * 1974-07-20 1976-01-30 Nippon Steel Corp Kyodo enseino baransuno suguretakakoyokokyodosukohanno seizohoho
JPS5178730A (en) * 1974-12-30 1976-07-08 Nippon Steel Corp Fueraitosoto kyureihentaisoyorinaru fukugososhikikohanno seizohoho

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS516811A (en) * 1974-07-09 1976-01-20 Nippon Steel Corp Ihoseinonai koenseikokyodokoto sonoseizohoho
JPS5112317A (en) * 1974-07-20 1976-01-30 Nippon Steel Corp Kyodo enseino baransuno suguretakakoyokokyodosukohanno seizohoho
JPS5178730A (en) * 1974-12-30 1976-07-08 Nippon Steel Corp Fueraitosoto kyureihentaisoyorinaru fukugososhikikohanno seizohoho

Cited By (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS57126916A (en) * 1981-01-29 1982-08-06 Sumitomo Metal Ind Ltd Production of high-tensile strength steel sheet excellent in workability and weldability
JPH0116888B2 (en) * 1981-01-29 1989-03-28 Sumitomo Metal Ind
JPS58210125A (en) * 1982-06-01 1983-12-07 Sumitomo Metal Ind Ltd Production of strong and tough high tensile steel plate by direct hardening method
JPH0413406B2 (en) * 1982-06-01 1992-03-09 Sumitomo Metal Ind
JPS6039119A (en) * 1983-08-11 1985-02-28 Sumitomo Metal Ind Ltd Manufacture of hot-rolled high-tension steel plate
JPH0123525B2 (en) * 1983-08-11 1989-05-02 Sumitomo Metal Ind
JPS61257457A (en) * 1985-05-07 1986-11-14 Kobe Steel Ltd Steel sheet for laser processing having superior fatigue characteristic
JPH0514782B2 (en) * 1985-05-07 1993-02-25 Kobe Steel Ltd
JPS62142726A (en) * 1985-12-18 1987-06-26 Kobe Steel Ltd Manufacture of wear resistant steel sheet having satisfactory weldability
CN105369021A (en) * 2015-12-11 2016-03-02 武汉钢铁(集团)公司 On-line quenching and cooling method taking account of shape and performance of thin-specification high-strength steel plate

Also Published As

Publication number Publication date
JPS5818971B2 (en) 1983-04-15

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