JPS5658920A - Direct hardening method of steel plate - Google Patents

Direct hardening method of steel plate

Info

Publication number
JPS5658920A
JPS5658920A JP13371079A JP13371079A JPS5658920A JP S5658920 A JPS5658920 A JP S5658920A JP 13371079 A JP13371079 A JP 13371079A JP 13371079 A JP13371079 A JP 13371079A JP S5658920 A JPS5658920 A JP S5658920A
Authority
JP
Japan
Prior art keywords
steel plate
hardening
hardened
hot
thick 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
JP13371079A
Other languages
Japanese (ja)
Inventor
Hisashi Yoshinaga
Hiromichi Tsugai
Yasuo Suishiyu
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 JP13371079A priority Critical patent/JPS5658920A/en
Publication of JPS5658920A publication Critical patent/JPS5658920A/en
Pending 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
    • C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/46—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for sheet metals

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Metal Rolling (AREA)

Abstract

PURPOSE:To improve the flatness of a steel plate and decrease the variance in mechanical properties by flattening the same with a hot leveler right after hot finish rolling then hardening the same with a roller quench type hardening apparatus. CONSTITUTION:The thick steel plate having been emitted from an ingot heating furnace 1 for slab etc. and hot rolled by a roughing mill 2 and a finishing mill 3 is passed through a hot leveler 4, whereby it is corrected of the distortions produced by the rolling to have better flatness. Thence, this steel plate is hardened by means of a roller quench type hardening apparatus. In the apparatus 5, it is hardened while it is grasped and conveyed by upper and lower rollers, hence, the cambers in the longitudinal and width direction of the thick steel plate are suppressed. Because of this, the thick steel plate is hardened at a uniform and proper hardening temperature from the leading end up to the trailing end. After the hardening, it is subjected to ordinary annealing with an annealing apparatus 6.
JP13371079A 1979-10-16 1979-10-16 Direct hardening method of steel plate Pending JPS5658920A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP13371079A JPS5658920A (en) 1979-10-16 1979-10-16 Direct hardening method of steel plate

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP13371079A JPS5658920A (en) 1979-10-16 1979-10-16 Direct hardening method of steel plate

Publications (1)

Publication Number Publication Date
JPS5658920A true JPS5658920A (en) 1981-05-22

Family

ID=15111074

Family Applications (1)

Application Number Title Priority Date Filing Date
JP13371079A Pending JPS5658920A (en) 1979-10-16 1979-10-16 Direct hardening method of steel plate

Country Status (1)

Country Link
JP (1) JPS5658920A (en)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864320A (en) * 1981-10-14 1983-04-16 Kobe Steel Ltd Cooling equipment for thick steel plate
JPH0618260U (en) * 1992-08-18 1994-03-08 東洋ガラス株式会社 Bottle mouth
US20150023387A1 (en) * 2008-03-31 2015-01-22 Jfe Steel Corporation Steel plate quality assurance system and equipment thereof

Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544212A (en) * 1977-06-13 1979-01-12 Kawasaki Steel Co Steel quenching apparatus

Patent Citations (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS544212A (en) * 1977-06-13 1979-01-12 Kawasaki Steel Co Steel quenching apparatus

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5864320A (en) * 1981-10-14 1983-04-16 Kobe Steel Ltd Cooling equipment for thick steel plate
JPS6241294B2 (en) * 1981-10-14 1987-09-02 Kobe Steel Ltd
JPH0618260U (en) * 1992-08-18 1994-03-08 東洋ガラス株式会社 Bottle mouth
US20150023387A1 (en) * 2008-03-31 2015-01-22 Jfe Steel Corporation Steel plate quality assurance system and equipment thereof

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