JPS57137030A - Method and apparatus for heating pipe or the like by gas capable of adjusting heating width and generating temperature difference in circumferential direction - Google Patents

Method and apparatus for heating pipe or the like by gas capable of adjusting heating width and generating temperature difference in circumferential direction

Info

Publication number
JPS57137030A
JPS57137030A JP2355281A JP2355281A JPS57137030A JP S57137030 A JPS57137030 A JP S57137030A JP 2355281 A JP2355281 A JP 2355281A JP 2355281 A JP2355281 A JP 2355281A JP S57137030 A JPS57137030 A JP S57137030A
Authority
JP
Japan
Prior art keywords
heating
circumferential direction
temperature difference
cooling liquid
width
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
JP2355281A
Other languages
Japanese (ja)
Inventor
Mitsuru Sugimori
Akira Sakamoto
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.)
Dai Ichi High Frequency Co Ltd
Original Assignee
Dai Ichi High Frequency Co 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 Dai Ichi High Frequency Co Ltd filed Critical Dai Ichi High Frequency Co Ltd
Priority to JP2355281A priority Critical patent/JPS57137030A/en
Publication of JPS57137030A publication Critical patent/JPS57137030A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D—WORKING OR PROCESSING OF SHEET METAL OR METAL TUBES, RODS OR PROFILES WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21D7/00—Bending rods, profiles, or tubes
    • B21D7/16—Auxiliary equipment, e.g. for heating or cooling of bends
    • B21D7/162—Heating equipment

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Bending Of Plates, Rods, And Pipes (AREA)

Abstract

PURPOSE:To substitute for high-frequency induction heating by blowing flames from a group of tip nozzles of a ring burner to an object to be heated and at the same time, jetting cooling liquid immediately before and after the flames and thereby heating in a narrow width. CONSTITUTION:The tip nozzles 7 of a ring burner A are divided into plural groups having different supply routes of combustion gas. A mixed gas for combustion is then supplied to the group 7 of tip nozzles and gas flame is blown against the object of heating. A cooling liquid is jetted from a cooling liquid jetting nozzle to the object of heating immediately before and after the gas flame. Temperature difference is given in a circumferential direction by adjusting the width of heating. Thus, this can be substituted for high-frequency induction heating at low equipment cost.
JP2355281A 1981-02-19 1981-02-19 Method and apparatus for heating pipe or the like by gas capable of adjusting heating width and generating temperature difference in circumferential direction Pending JPS57137030A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP2355281A JPS57137030A (en) 1981-02-19 1981-02-19 Method and apparatus for heating pipe or the like by gas capable of adjusting heating width and generating temperature difference in circumferential direction

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP2355281A JPS57137030A (en) 1981-02-19 1981-02-19 Method and apparatus for heating pipe or the like by gas capable of adjusting heating width and generating temperature difference in circumferential direction

Publications (1)

Publication Number Publication Date
JPS57137030A true JPS57137030A (en) 1982-08-24

Family

ID=12113648

Family Applications (1)

Application Number Title Priority Date Filing Date
JP2355281A Pending JPS57137030A (en) 1981-02-19 1981-02-19 Method and apparatus for heating pipe or the like by gas capable of adjusting heating width and generating temperature difference in circumferential direction

Country Status (1)

Country Link
JP (1) JPS57137030A (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676088A (en) * 1985-06-10 1987-06-30 Hitachi, Ltd. T-joint manufacturing apparatus
US7637136B2 (en) * 2002-09-30 2009-12-29 Rinascimetalli Ltd. Method of working metal, metal body obtained by the method and metal-containing ceramic body obtained by the method

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US4676088A (en) * 1985-06-10 1987-06-30 Hitachi, Ltd. T-joint manufacturing apparatus
US7637136B2 (en) * 2002-09-30 2009-12-29 Rinascimetalli Ltd. Method of working metal, metal body obtained by the method and metal-containing ceramic body obtained by the method

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