Title:
VERY THIN-WALLED LONG METAL TUBE, METHOD OF MANUFACTURING VERY THIN-WALLED LONG METAL TUBE, AND DEVICE USING VERY THIN-WALLED LONG METAL TUBE AS ROLL OR BELT
Document Type and Number:
WIPO Patent Application WO/2010/073476
Kind Code:
A1
Abstract:
A method of manufacturing a very thin-walled long metal tube, the method comprising: a step in which a rectangular metal plate plastically workable is formed into a tubular shape and welded into a long metal tube; a step in which a tubular-shaped flanged metal tube blank is formed by providing, at opposite ends of the metal tube, an outwardly projecting outer flange and an inwardly projecting inner flange; a step in which the tubular-shaped flanged metal tube blank is mounted tightly on a mandrel; a spinning step in which a tensile force is applied to the tubular-shaped flanged metal tube blank and the mandrel is rotated in the axis direction to plastically deform the wall surface by spinning; a step in which two ends of the plastically deformed tubular-shaped flanged metal tube blank are cut off; and a residual stress adjusting step. The method has a heat-treatment step performed during the spinning step. Thus, this configuration allows for a very thin-walled long metal tube having high functionality required for a roll used in the field of optical film forming rolls for flat panel displays.
Inventors:
MATSUDA KIYONORI (JP)
SANDA KAZUHIKO (JP)
HIRASAWA TAKESHI (JP)
SAKUMA MASARU (JP)
TANAKA MANSEI (JP)
SANDA KAZUHIKO (JP)
HIRASAWA TAKESHI (JP)
SAKUMA MASARU (JP)
TANAKA MANSEI (JP)
Application Number:
PCT/JP2009/006142
Publication Date:
July 01, 2010
Filing Date:
November 17, 2009
Export Citation:
Assignee:
DYMCO CO LTD (JP)
MATSUDA KIYONORI (JP)
SANDA KAZUHIKO (JP)
HIRASAWA TAKESHI (JP)
SAKUMA MASARU (JP)
TANAKA MANSEI (JP)
MATSUDA KIYONORI (JP)
SANDA KAZUHIKO (JP)
HIRASAWA TAKESHI (JP)
SAKUMA MASARU (JP)
TANAKA MANSEI (JP)
International Classes:
B21D22/16; B21D51/16
Foreign References:
JPS566809B2 | 1981-02-13 | |||
JP2004174555A | 2004-06-24 |
Attorney, Agent or Firm:
ENDO, NOBUAKI (JP)
Nobuaki Endo (JP)
Nobuaki Endo (JP)
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