JPS5450411A - Heat treatment method for polygonal pipe - Google Patents

Heat treatment method for polygonal pipe

Info

Publication number
JPS5450411A
JPS5450411A JP11671977A JP11671977A JPS5450411A JP S5450411 A JPS5450411 A JP S5450411A JP 11671977 A JP11671977 A JP 11671977A JP 11671977 A JP11671977 A JP 11671977A JP S5450411 A JPS5450411 A JP S5450411A
Authority
JP
Japan
Prior art keywords
polygonal pipe
pipe
heat treatment
core jig
polygonal
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
JP11671977A
Other languages
English (en)
Inventor
Sozo Saito
Takeshi Suzumura
Yutaka Kamoshita
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.)
Hitachi Ltd
Original Assignee
Hitachi 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 Hitachi Ltd filed Critical Hitachi Ltd
Priority to JP11671977A priority Critical patent/JPS5450411A/ja
Publication of JPS5450411A publication Critical patent/JPS5450411A/ja
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
    • C21D9/08—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for tubular bodies or pipes

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 Articles (AREA)
JP11671977A 1977-09-30 1977-09-30 Heat treatment method for polygonal pipe Pending JPS5450411A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11671977A JPS5450411A (en) 1977-09-30 1977-09-30 Heat treatment method for polygonal pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11671977A JPS5450411A (en) 1977-09-30 1977-09-30 Heat treatment method for polygonal pipe

Publications (1)

Publication Number Publication Date
JPS5450411A true JPS5450411A (en) 1979-04-20

Family

ID=14694104

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11671977A Pending JPS5450411A (en) 1977-09-30 1977-09-30 Heat treatment method for polygonal pipe

Country Status (1)

Country Link
JP (1) JPS5450411A (ja)

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