JPS57198210A - Manufacture of high toughness steel - Google Patents

Manufacture of high toughness steel

Info

Publication number
JPS57198210A
JPS57198210A JP8236781A JP8236781A JPS57198210A JP S57198210 A JPS57198210 A JP S57198210A JP 8236781 A JP8236781 A JP 8236781A JP 8236781 A JP8236781 A JP 8236781A JP S57198210 A JPS57198210 A JP S57198210A
Authority
JP
Japan
Prior art keywords
steel
cooling
rolling
heating
air
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
JP8236781A
Other languages
Japanese (ja)
Inventor
Takahide Ono
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 JP8236781A priority Critical patent/JPS57198210A/en
Publication of JPS57198210A publication Critical patent/JPS57198210A/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
    • C21D8/00—Modifying the physical properties by deformation combined with, or followed by, heat treatment

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)
  • Heat Treatment Of Steel (AREA)

Abstract

PURPOSE:To obtain steel of high toughness by saved energy and at a low cost, by heating a continuously cast steel ingo to a specific temperature, rolling it, and subsequently, cooling it at a speed exceeding air-cooling. CONSTITUTION:A steel ingot manufactured by a continuous casting method is heated to Ac3-700 deg.C and is rolled. By this heating and rolling, the fine steel structure of crystal grains cooled quickly by continuous casting is maintained in the rolling process, too. A steel material rolled to finishing dimensions by this method is cooled by air-cooling or at a higher speed than air-cooling, by which it is prevented that the steel structure becomes rough. In this way, it is possible to obtain a steel material which is excellent in its strength and toughness, at low heating and rolling temperature.
JP8236781A 1981-05-29 1981-05-29 Manufacture of high toughness steel Pending JPS57198210A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP8236781A JPS57198210A (en) 1981-05-29 1981-05-29 Manufacture of high toughness steel

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP8236781A JPS57198210A (en) 1981-05-29 1981-05-29 Manufacture of high toughness steel

Publications (1)

Publication Number Publication Date
JPS57198210A true JPS57198210A (en) 1982-12-04

Family

ID=13772608

Family Applications (1)

Application Number Title Priority Date Filing Date
JP8236781A Pending JPS57198210A (en) 1981-05-29 1981-05-29 Manufacture of high toughness steel

Country Status (1)

Country Link
JP (1) JPS57198210A (en)

Similar Documents

Publication Publication Date Title
DE3064071D1 (en) Process for the manufacture of grinding members of an iron alloy
JPS5680367A (en) Restraining method of cracking in b-containing steel continuous casting ingot
JPS55104431A (en) Production of cold rolled steel plate for deep drawing by short-time continuous annealing
GB895384A (en) A method of preparing grain oriented sheet metal
JPS56133445A (en) Hot rolled steel products having superior cold workability and toughness and their manufacture
JPS57198210A (en) Manufacture of high toughness steel
CA1069669A (en) Method and apparatus for producing completely recrystallized metal sheet
JPS57143435A (en) Manufacture of high strength steel sheet for working by continuous annealing
JPS566704A (en) Hot width-gauge control rolling method for cast slab of middle and low carbon steel
JPS55128533A (en) Preparation of steel material with reduced microsegregation
JPS55152128A (en) Preparation of low yield ratio and high strength cold rolled steel plate with excellent processability by continuous annealing
JPS56163001A (en) Manufacture of titanium slab
JPS5630012A (en) Hot rolling method
JPS5641006A (en) Feeding method for cast slab to hot rolling process
JPS56158816A (en) Manufacture of anisotropic electrical steel strip
JPS5698420A (en) Preparation of semiprocess nondirectional silicon steel plate with excellent electromagnetic property
JPS56108861A (en) Manufacture of al alloy plate for vessel with superior under-etchability for fluororesin coat
SU789213A1 (en) Ingot continuous casting method
SU648297A1 (en) Method of making rolled sections of bearing steel
JPS56158818A (en) Manufacture of anisotropic silicon steel plate with superior magnetic characteristic by continuous casting
JPS5614064A (en) Continuous casting method
JPS61143524A (en) Manufacture of sheet-shaped slab
JPS55122822A (en) Manufacture inhibiting austenite crystal grain coarsening for controlled rolled steel products
SU1424950A1 (en) Method of continuous casting of a blank
JPS55161028A (en) Manufacture of high strength cold rolled sheet having superior press moldability and weather resistance