JPS57171521A - Method and apparatus for stress relief for thin plate construction such as external plate of railway car - Google Patents

Method and apparatus for stress relief for thin plate construction such as external plate of railway car

Info

Publication number
JPS57171521A
JPS57171521A JP5795181A JP5795181A JPS57171521A JP S57171521 A JPS57171521 A JP S57171521A JP 5795181 A JP5795181 A JP 5795181A JP 5795181 A JP5795181 A JP 5795181A JP S57171521 A JPS57171521 A JP S57171521A
Authority
JP
Japan
Prior art keywords
heating
temperature
heated
heater
thin plate
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.)
Granted
Application number
JP5795181A
Other languages
Japanese (ja)
Other versions
JPS5950414B2 (en
Inventor
Atsushi Matsumoto
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.)
Nippon Sharyo Ltd
Original Assignee
Nippon Sharyo 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 Nippon Sharyo Ltd filed Critical Nippon Sharyo Ltd
Priority to JP5795181A priority Critical patent/JPS5950414B2/en
Publication of JPS57171521A publication Critical patent/JPS57171521A/en
Publication of JPS5950414B2 publication Critical patent/JPS5950414B2/en
Expired 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
    • B21D1/00—Straightening, restoring form or removing local distortions of sheet metal or specific articles made therefrom; Stretching sheet metal combined with rolling
    • B21D1/06—Removing local distortions

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Straightening Metal Sheet-Like Bodies (AREA)

Abstract

PURPOSE:To further increase the effect of spot heating automatically, by cooling a heated part after heating a metallic thin plate in dot or linear shape and heating the circumference to a low temperature. CONSTITUTION:A cylinder 1 is covered on a thin plate 8, which is heated in dot shape with a heating torch 4 of the 1st heater 2. When the heating temperature reaches a prescribed temperature, the heating is stopped, cooling air flows to the heated part from a cooling pipe 5 and the surrounding area of the heated part is heated by a heating torch 6 of the 2nd heater 3. When the heated temperature of the surrounding area reaches a prescribed temperature, the 2nd heater 3 is controlled so that this temperature can be kept constant. When the spot heating of a middle branch to be cooled reaches almost the same heating temperature of the circumference, the heating using the 2nd heater 3 is stopped, the cooling air is blown from the cooling pipe 7 and the circumference is cooled.
JP5795181A 1981-04-17 1981-04-17 Method and device for removing distortion from thin plate structures such as outer panels of railway vehicles Expired JPS5950414B2 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
JP5795181A JPS5950414B2 (en) 1981-04-17 1981-04-17 Method and device for removing distortion from thin plate structures such as outer panels of railway vehicles

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
JP5795181A JPS5950414B2 (en) 1981-04-17 1981-04-17 Method and device for removing distortion from thin plate structures such as outer panels of railway vehicles

Publications (2)

Publication Number Publication Date
JPS57171521A true JPS57171521A (en) 1982-10-22
JPS5950414B2 JPS5950414B2 (en) 1984-12-08

Family

ID=13070334

Family Applications (1)

Application Number Title Priority Date Filing Date
JP5795181A Expired JPS5950414B2 (en) 1981-04-17 1981-04-17 Method and device for removing distortion from thin plate structures such as outer panels of railway vehicles

Country Status (1)

Country Link
JP (1) JPS5950414B2 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4910071B1 (en) * 2011-04-28 2012-04-04 昭男 平根 Sheet metal repair jig
JP2012232340A (en) * 2011-12-07 2012-11-29 Akio Hirane Sheet metal repair jig

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPH0343712U (en) * 1989-09-06 1991-04-24

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JP4910071B1 (en) * 2011-04-28 2012-04-04 昭男 平根 Sheet metal repair jig
JP2012232340A (en) * 2011-12-07 2012-11-29 Akio Hirane Sheet metal repair jig

Also Published As

Publication number Publication date
JPS5950414B2 (en) 1984-12-08

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