Title:
据え込み鍛造性に優れるチタン材およびその製造方法
Document Type and Number:
Japanese Patent JP3715239
Kind Code:
B2
Abstract:
In finifsh-cogging a high-purity titanium material into a cylindrical form as the final shape, if cylindrical cogging is performed in all stages of warm forging or if cylindrical cogging is performed in the initial stage of the warm forging, there is no need of peripherally restricting the cylindrical cogging material, so that even if longitudinal upset-forging is effected with an upsetting ratio of 2, the condition that the major diameter/minor diameter ratio of the section after forging is not more than 1.01 can be satisfied, developing superior upset-forgeability. This makes it possible, in producing disk-like targets for sputtering, to minimize cutting loss produced during the rolling and machining and to maximize the yield of products; therefore, the material can be widely used as a semiconductor material for electrodes and the like using a high-purity titanium material.
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Inventors:
Nobuhiro Arimoto
Tadashi Ogasawara
Uemura Isao
Youji Mitani
Takashi Onishi
Tadashi Ogasawara
Uemura Isao
Youji Mitani
Takashi Onishi
Application Number:
JP2001516689A
Publication Date:
November 09, 2005
Filing Date:
August 10, 2000
Export Citation:
Assignee:
Sumitomo Titanium Co., Ltd.
International Classes:
B21J5/00; C22F1/18; C23C14/34; (IPC1-7): B21J5/00; C22F1/18; C23C14/34
Domestic Patent References:
| JP8232061A | ||||
| JP5237581A |
Attorney, Agent or Firm:
Michio Mori