Title:
EXTRUSION DIE AND METHOD OF MANUFACTURING EXTRUSION MATERIAL
Document Type and Number:
Japanese Patent JP2010017747
Kind Code:
A
Abstract:
To provide an extrusion die having a structure capable of selectively cooling a bearing part.
The extrusion die (20) has the bearing part (25) for forming the inside surface (2a) of an extrusion material (1) and is provided with a passage (26) for cooling media, which passes through the inside of the bearing part (25) and has an opening part (28) on the end face of the downstream side. In the passage (26a) for the cooling media, heat exchanging efficiency in the inside (29) of the bearing part (25) is set higher than the heat exchanging efficiency in the part (26a) of the upstream side.
Inventors:
SAKIHAMA HIDEKAZU
MOMO YOICHI
TANAKA KOICHI
TATE TERUO
MOMO YOICHI
TANAKA KOICHI
TATE TERUO
Application Number:
JP2008181615A
Publication Date:
January 28, 2010
Filing Date:
July 11, 2008
Export Citation:
Assignee:
SHOWA DENKO KK
International Classes:
B21C25/02; B21C29/04
Domestic Patent References:
| JPH01118815A | 1989-05-11 | |||
| JP2005013997A | 2005-01-20 | |||
| JPH01170516A | 1989-07-05 | |||
| JP2008512248A | 2008-04-24 | |||
| JPH1076312A | 1998-03-24 | |||
| JPH0466216A | 1992-03-02 |
Attorney, Agent or Firm:
Yoshihito Shimizu
Hisayoshi Shimizu
Ken Takada
Hisayoshi Shimizu
Ken Takada