JPS57181332A - Manufacture of high-strength steel plate with superior cold and heat hardenability - Google Patents

Manufacture of high-strength steel plate with superior cold and heat hardenability

Info

Publication number
JPS57181332A
JPS57181332A JP6419981A JP6419981A JPS57181332A JP S57181332 A JPS57181332 A JP S57181332A JP 6419981 A JP6419981 A JP 6419981A JP 6419981 A JP6419981 A JP 6419981A JP S57181332 A JPS57181332 A JP S57181332A
Authority
JP
Japan
Prior art keywords
content
cold
manufacture
steel plate
strength 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.)
Granted
Application number
JP6419981A
Other languages
Japanese (ja)
Other versions
JPS6360098B2 (en
Inventor
Shuji Nakai
Seiichi Sugisawa
Hisakazu Morino
Katsumi Kato
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 JP6419981A priority Critical patent/JPS57181332A/en
Publication of JPS57181332A publication Critical patent/JPS57181332A/en
Publication of JPS6360098B2 publication Critical patent/JPS6360098B2/ja
Granted 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
    • C21D1/00—General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/74—Methods of treatment in inert gas, controlled atmosphere, vacuum or pulverulent material
    • C21D1/76—Adjusting the composition of the atmosphere

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)
  • Heat Treatment Of Sheet Steel (AREA)

Abstract

PURPOSE:To enhance the cold and heat hardenability by annealing a rimmed steel contg. specified amounts of C, Mn, P, S and N after hot and cold rolling in an atmosphere with a specified N content while blowing gaseous NH3 is an amount satisfying a specified equation. CONSTITUTION:A rimmed steel consisting of, by weight, 0.02-0.1% C, 0.15- 0.8% Mn, 0.03-0.1% P, <0.02% S, <0.005% N and the balance Fe with inevitable impurities is hot rolled by an ordinary method and cold rolled. The rolled steel is then annealed at 600-800 deg.C in an atmosphere with 30-200ppm N content and 4-75% gaseous H2 content while blowing gaseous NH3 in an amount satisfying the equiation, wherein PH2 is the partial pressure of hydrogen, PNH3 is the partial pressure of ammonia, and N is the soluble N content in the steel.
JP6419981A 1981-04-30 1981-04-30 Manufacture of high-strength steel plate with superior cold and heat hardenability Granted JPS57181332A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP6419981A JPS57181332A (en) 1981-04-30 1981-04-30 Manufacture of high-strength steel plate with superior cold and heat hardenability

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP6419981A JPS57181332A (en) 1981-04-30 1981-04-30 Manufacture of high-strength steel plate with superior cold and heat hardenability

Publications (2)

Publication Number Publication Date
JPS57181332A true JPS57181332A (en) 1982-11-08
JPS6360098B2 JPS6360098B2 (en) 1988-11-22

Family

ID=13251156

Family Applications (1)

Application Number Title Priority Date Filing Date
JP6419981A Granted JPS57181332A (en) 1981-04-30 1981-04-30 Manufacture of high-strength steel plate with superior cold and heat hardenability

Country Status (1)

Country Link
JP (1) JPS57181332A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216713A (en) * 1985-03-20 1986-09-26 Matsushita Electric Ind Co Ltd Gas permeable membrane module
KR20020034484A (en) * 2000-11-02 2002-05-09 이구택 Heat hardenable hot rolled steel sheet having superior formability and producing method thereof

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS61216713A (en) * 1985-03-20 1986-09-26 Matsushita Electric Ind Co Ltd Gas permeable membrane module
JPH0372328B2 (en) * 1985-03-20 1991-11-18 Matsushita Electric Ind Co Ltd
KR20020034484A (en) * 2000-11-02 2002-05-09 이구택 Heat hardenable hot rolled steel sheet having superior formability and producing method thereof

Also Published As

Publication number Publication date
JPS6360098B2 (en) 1988-11-22

Similar Documents

Publication Publication Date Title
CA2049378A1 (en) High strength steel sheet adapted for press forming and method of producing the same
NO970217L (en) Process for the production of steel material and steel pipes with excellent corrosion resistance and weldability
JPS5684422A (en) Production of precipitation hardening type high-tension cold rolled steel plate
JPS6479322A (en) Production of composite structure high-strength cold rolled steel sheet having excellent bulging property and fatigue characteristic
JPS57181332A (en) Manufacture of high-strength steel plate with superior cold and heat hardenability
JPS5743929A (en) Production of pipe of bearing steel
JPS56142826A (en) Production of high-toughness high tensile steel plate
JPS57143435A (en) Manufacture of high strength steel sheet for working by continuous annealing
JPS55145123A (en) Manufacture of cold rolled steel sheet excellent in deep-drawing property
JPS5577910A (en) Manufacture through continuous annealing of cold rolled steel sheet for drawing work
JPS5789429A (en) Production of low-alloy steel with excellent workability in cold drawing and cold extrusion
JPS5538979A (en) Manufacture of low yield point, high tensile hot rolled steel plate with superior workability
JPS54141315A (en) Manufacture of ferritic stainless steel plate with superior damping capacity
JPS5743932A (en) Production of high strength cold rolled steel strip excellent in press formability and bake hardenability
JPS57155329A (en) Production of high-strength cold-rolled steel sheet excellent in strain age-hardenability
JPS5531159A (en) Manufacture of high strength cold rolled steel plate for press working
JPS5647555A (en) Manufacture of high-tensile galvanized steel plate with low yield ratio
JPS56127761A (en) Preparation of high strength zinc hot dipping steel plate with low yield ratio
JPS5483620A (en) Manufacture of oriented electrical steel sheet
JPS5591940A (en) Preparation of high tension cold rolled steel sheet having superior stretching property
JPS5770236A (en) Manufacture of ferritic stainless thin steel plate excellent in deep drawability
JPS56166334A (en) Manufacture of cold rolled steel plate with heat hardenability for deep drawing
JPS6425947A (en) Steel plate for enamel and its production
JPS56119735A (en) Manufacture of strip steel with small anisotropy for deep drawing
JPS5494425A (en) Method of producing material for shadow mask