JPS5447841A - Automatic straightening apparatus - Google Patents

Automatic straightening apparatus

Info

Publication number
JPS5447841A
JPS5447841A JP11423577A JP11423577A JPS5447841A JP S5447841 A JPS5447841 A JP S5447841A JP 11423577 A JP11423577 A JP 11423577A JP 11423577 A JP11423577 A JP 11423577A JP S5447841 A JPS5447841 A JP S5447841A
Authority
JP
Japan
Prior art keywords
strain
torch
steel sheet
occurred
movement
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
JP11423577A
Other languages
Japanese (ja)
Inventor
Mutsuhiro Yoshitake
Yoshihiro Uramura
Michiyasu Komatsu
Tetsuo Ikemoto
Ken Fujiwara
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.)
CHIYODA SEIKI KK
Mitsubishi Heavy Industries Ltd
Original Assignee
CHIYODA SEIKI KK
Mitsubishi Heavy 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 CHIYODA SEIKI KK, Mitsubishi Heavy Industries Ltd filed Critical CHIYODA SEIKI KK
Priority to JP11423577A priority Critical patent/JPS5447841A/en
Publication of JPS5447841A publication Critical patent/JPS5447841A/en
Pending legal-status Critical Current

Links

Landscapes

  • Straightening Metal Sheet-Like Bodies (AREA)
  • Heat Treatment Of Articles (AREA)

Abstract

PURPOSE: To remove automatically the strain, by heating the strain part generated to the steel sheet owing to the welding with the torch and, at the same time, by cooling that part with water.
CONSTITUTION: The rail body 2 is placed on the steel sheet 1 to which the strain has occurred owing to the welding and is fixed to the steel sheet 1 with the permanent magnets of the attracting fixing devices 10. The travelling machine 3 is placed on the rail 2 and the burner of the torch 5 and the cooling nozzle 6 equipped to the above machine 3 are arranged on the part at which the strain has occurred. The torch 5 is fired by being fed with acetylene gas and oxygen and the steel sheet at the part at which the strain has occurred, is heated to about 800°C with this torch. At this time, with the reciprocating movement of the arm body 4 holding the torch 5 to the left and right and the advancing movement of the travelling machine 3, the torch 5 conducts the movement having the form of a sine wave and heats uniformly the part of occurrence of the strain with a definite width. Then, by spouting water from the cooling nozzle 6 at the rear of the torch, the steel sheet is quenched to about 200°C. The steel sheet 1 at the part of occurrence of the strain contracts with a large coefficient of contraction, so that the strain of the steel sheet 1 is removed automatically.
COPYRIGHT: (C)1979,JPO&Japio
JP11423577A 1977-09-21 1977-09-21 Automatic straightening apparatus Pending JPS5447841A (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP11423577A JPS5447841A (en) 1977-09-21 1977-09-21 Automatic straightening apparatus

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP11423577A JPS5447841A (en) 1977-09-21 1977-09-21 Automatic straightening apparatus

Publications (1)

Publication Number Publication Date
JPS5447841A true JPS5447841A (en) 1979-04-14

Family

ID=14632630

Family Applications (1)

Application Number Title Priority Date Filing Date
JP11423577A Pending JPS5447841A (en) 1977-09-21 1977-09-21 Automatic straightening apparatus

Country Status (1)

Country Link
JP (1) JPS5447841A (en)

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