JPS5681619A - Production of tempered high tensile steel plate - Google Patents

Production of tempered high tensile steel plate

Info

Publication number
JPS5681619A
JPS5681619A JP15728779A JP15728779A JPS5681619A JP S5681619 A JPS5681619 A JP S5681619A JP 15728779 A JP15728779 A JP 15728779A JP 15728779 A JP15728779 A JP 15728779A JP S5681619 A JPS5681619 A JP S5681619A
Authority
JP
Japan
Prior art keywords
steel plate
hardening
high tensile
tempered
tensile steel
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.)
Pending
Application number
JP15728779A
Other languages
Japanese (ja)
Inventor
Katsumi Watanabe
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
Sumitomo Metal Industries 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 Sumitomo Metal Industries Ltd filed Critical Sumitomo Metal Industries Ltd
Priority to JP15728779A priority Critical patent/JPS5681619A/en
Publication of JPS5681619A publication Critical patent/JPS5681619A/en
Pending legal-status Critical Current

Links

Abstract

PURPOSE: To produce a tempered high tensile steel plate or superior quality and flatness at low cost by hardening a hot-rolled steel plate in air cooling process and reheating and tempering the same after this.
CONSTITUTION: A carbon steel or alloy ingot after blooming is heated at high temperatures of 1,000W1,200°C, to fine austenite structure, after which it is hot- rolled at ≥700°C temperatures to work the steel plate while preventing the formation of ferrite. Next, it is hardened by air cooling, after which it is reheated and tempered at 650°C, whereby the tempered high tensile steel plate of ≥80kg/cm2 in tensile strength is produced. According to this method, the water hardening process of conventional methods is omitted and therefore the fuel cost for the purpose of reheating, hardening electric power and hardening water cost, etc. required for said process is saved and the production cost is reduced.
COPYRIGHT: (C)1981,JPO&Japio
JP15728779A 1979-12-03 1979-12-03 Production of tempered high tensile steel plate Pending JPS5681619A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP15728779A JPS5681619A (en) 1979-12-03 1979-12-03 Production of tempered high tensile steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP15728779A JPS5681619A (en) 1979-12-03 1979-12-03 Production of tempered high tensile steel plate

Publications (1)

Publication Number Publication Date
JPS5681619A true JPS5681619A (en) 1981-07-03

Family

ID=15646353

Family Applications (1)

Application Number Title Priority Date Filing Date
JP15728779A Pending JPS5681619A (en) 1979-12-03 1979-12-03 Production of tempered high tensile steel plate

Country Status (1)

Country Link
JP (1) JPS5681619A (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007037444A (en) * 2005-08-02 2007-02-15 Iseki & Co Ltd Seedling planting tine of seedling planting machine

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52111414A (en) * 1976-03-16 1977-09-19 Nippon Kokan Kk <Nkk> Preparation of high tensile steel superior in toughness
JPS5337123A (en) * 1976-09-18 1978-04-06 Nippon Steel Corp Production of high tensile strength steel excellent in low temperature toughness
JPS53119219A (en) * 1977-03-29 1978-10-18 Nippon Steel Corp Manufacture of weldable high tensile steel
JPS583011A (en) * 1981-06-30 1983-01-08 Fujitsu Ltd Circular arc generation system

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS52111414A (en) * 1976-03-16 1977-09-19 Nippon Kokan Kk <Nkk> Preparation of high tensile steel superior in toughness
JPS5337123A (en) * 1976-09-18 1978-04-06 Nippon Steel Corp Production of high tensile strength steel excellent in low temperature toughness
JPS53119219A (en) * 1977-03-29 1978-10-18 Nippon Steel Corp Manufacture of weldable high tensile steel
JPS583011A (en) * 1981-06-30 1983-01-08 Fujitsu Ltd Circular arc generation system

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP2007037444A (en) * 2005-08-02 2007-02-15 Iseki & Co Ltd Seedling planting tine of seedling planting machine

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