JPS5460256A - Gas cutting of welded steel pipe - Google Patents

Gas cutting of welded steel pipe

Info

Publication number
JPS5460256A
JPS5460256A JP12567977A JP12567977A JPS5460256A JP S5460256 A JPS5460256 A JP S5460256A JP 12567977 A JP12567977 A JP 12567977A JP 12567977 A JP12567977 A JP 12567977A JP S5460256 A JPS5460256 A JP S5460256A
Authority
JP
Japan
Prior art keywords
cutting
gas
steel pipe
steel plate
notches
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
JP12567977A
Other languages
Japanese (ja)
Inventor
Shigetaka Yamaguchi
Yoshihisa Kanazawa
Yasushi Takahashi
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 JP12567977A priority Critical patent/JPS5460256A/en
Publication of JPS5460256A publication Critical patent/JPS5460256A/en
Pending legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B23—MACHINE TOOLS; METAL-WORKING NOT OTHERWISE PROVIDED FOR
    • B23K—SOLDERING OR UNSOLDERING; WELDING; CLADDING OR PLATING BY SOLDERING OR WELDING; CUTTING BY APPLYING HEAT LOCALLY, e.g. FLAME CUTTING; WORKING BY LASER BEAM
    • B23K7/00—Cutting, scarfing, or desurfacing by applying flames
    • B23K7/005—Machines, apparatus, or equipment specially adapted for cutting curved workpieces, e.g. tubes
    • B23K7/006—Machines, apparatus, or equipment specially adapted for cutting curved workpieces, e.g. tubes for tubes

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Butt Welding And Welding Of Specific Article (AREA)

Abstract

PURPOSE:To facilitate gas outting of welded steel pipe, the steel plate is, at each cutting size, processed before it is formed into a cylinder in such a way that slit- type notches are provided from welding groove face in the cutting direction. CONSTITUTION:In a typical application, a steel plate 5 is gas cut to make notches 6 from welding groove face in size of 1 long by S wide, at each cutting size. Then the steel plate 5 is formed by using roll into a cylinder, then the formed steel pipe 11 is subjected to gas cutting, starting from the notched portions 12. The process avoids filling of the notches 12 during welding to facilitate the gas cutting of the welded pipe 11 and further eliminates the starting hole process and large surplus margin for cutting.
JP12567977A 1977-10-21 1977-10-21 Gas cutting of welded steel pipe Pending JPS5460256A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP12567977A JPS5460256A (en) 1977-10-21 1977-10-21 Gas cutting of welded steel pipe

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP12567977A JPS5460256A (en) 1977-10-21 1977-10-21 Gas cutting of welded steel pipe

Publications (1)

Publication Number Publication Date
JPS5460256A true JPS5460256A (en) 1979-05-15

Family

ID=14915975

Family Applications (1)

Application Number Title Priority Date Filing Date
JP12567977A Pending JPS5460256A (en) 1977-10-21 1977-10-21 Gas cutting of welded steel pipe

Country Status (1)

Country Link
JP (1) JPS5460256A (en)

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