Title:
METHOD FOR PRODUCING PURE TITANIUM METAL MATERIAL THIN SHEET AND METHOD FOR PRODUCING SPEAKER DIAPHRAGM
Document Type and Number:
WIPO Patent Application WO/2018/030231
Kind Code:
A1
Abstract:
In this thin sheet production method, a titanium metal material thin sheet that maintains high strength, has excellent processability and has a curved surface is produced by: processing a pure titanium metal material into a titanium metal material thin sheet having a fine grain structure by performing multi-axis forging, which is a severe plastic deformation technique, and then rolling; and performing bulging at a temperature that is not lower than room temperature and not higher than a temperature at which recrystallization does not begin.
Inventors:
MIURA HIROMI (JP)
Application Number:
PCT/JP2017/028009
Publication Date:
February 15, 2018
Filing Date:
August 02, 2017
Export Citation:
Assignee:
NATIONAL UNIV CORPORATION TOYOHASHI UNIV OF TECHNOLOGY (JP)
International Classes:
C22F1/18; B21B1/22; B21B3/00; B21D22/20; B21D53/00; B21J1/02; B21J5/00; C22F1/00
Domestic Patent References:
| WO2014038487A1 | 2014-03-13 |
Foreign References:
| JP2013539820A | 2013-10-28 |
Attorney, Agent or Firm:
IKAWA Hirofumi et al. (JP)
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