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KR910009359A - 용접작업성이 개선된 프리스트레스 콘크리이트용 강봉 또는 강선 - Google Patents

용접작업성이 개선된 프리스트레스 콘크리이트용 강봉 또는 강선

Info

Publication number
KR910009359A
KR910009359A KR1019900018141A KR900018141A KR910009359A KR 910009359 A KR910009359 A KR 910009359A KR 1019900018141 A KR1019900018141 A KR 1019900018141A KR 900018141 A KR900018141 A KR 900018141A KR 910009359 A KR910009359 A KR 910009359A
Authority
KR
South Korea
Prior art keywords
prestressed concrete
welding workability
improved welding
steel wire
steel bar
Prior art date
Application number
KR1019900018141A
Other languages
English (en)
Other versions
KR930012255B1 (ko
Inventor
히로시 사토
히데하루 야마시타
카즈 닛다
시게루 미조구찌
Original Assignee
신닛뽕세이데츠 가부시기가이샤
고오슈하네쯔렌 가부시기가이샤
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
Priority claimed from JP28996589A external-priority patent/JP2824855B2/ja
Priority claimed from JP2085019A external-priority patent/JP2556388B2/ja
Application filed by 신닛뽕세이데츠 가부시기가이샤, 고오슈하네쯔렌 가부시기가이샤 filed Critical 신닛뽕세이데츠 가부시기가이샤
Publication of KR910009359A publication Critical patent/KR910009359A/ko
Application granted granted Critical
Publication of KR930012255B1 publication Critical patent/KR930012255B1/ko

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
    • C21D8/06—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires
    • C21D8/08—Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of rods or wires for concrete reinforcement
    • 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
    • C21D1/18—Hardening; Quenching with or without subsequent tempering
    • C21D1/19—Hardening; Quenching with or without subsequent tempering by interrupted quenching
    • 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
    • C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
    • C21D9/525—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length for wire, for rods
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/04—Ferrous alloys, e.g. steel alloys containing manganese
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/12—Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/14—Ferrous alloys, e.g. steel alloys containing titanium or zirconium

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)
KR1019900018141A 1989-11-09 1990-11-09 용접작업성이 개선된 프리스트레스 콘크리이트용 강봉 또는 강선 KR930012255B1 (ko)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
JP1-289965 1989-11-09
JP28996589A JP2824855B2 (ja) 1989-11-09 1989-11-09 プレストレストコンクリート用鋼棒の製造方法
JP2085019A JP2556388B2 (ja) 1990-04-02 1990-04-02 プレストレストコンクリート用鋼棒の製造方法
JP2-85019 1990-04-02

Publications (2)

Publication Number Publication Date
KR910009359A true KR910009359A (ko) 1991-06-28
KR930012255B1 KR930012255B1 (ko) 1993-12-28

Family

ID=26426058

Family Applications (1)

Application Number Title Priority Date Filing Date
KR1019900018141A KR930012255B1 (ko) 1989-11-09 1990-11-09 용접작업성이 개선된 프리스트레스 콘크리이트용 강봉 또는 강선

Country Status (1)

Country Link
KR (1) KR930012255B1 (ko)

Also Published As

Publication number Publication date
KR930012255B1 (ko) 1993-12-28

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Patent event code: PA01091R01D

Comment text: Patent Application

Patent event date: 19901109

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Patent event code: PE09021S01D

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Patent event code: PE09021S01D

G160 Decision to publish patent application
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Comment text: Decision on Publication of Application

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Patent event date: 19931203

E701 Decision to grant or registration of patent right
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Patent event code: PE07011S01D

Comment text: Decision to Grant Registration

Patent event date: 19940311

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