Title:
金属材料の押出成形用ダイス
Document Type and Number:
Japanese Patent JP4890163
Kind Code:
B2
Abstract:
In some preferred embodiments, an extrusion die for metallic material capable of obtaining a high quality extruded article can be provide while securing sufficient strength and durability. The extrusion die is provided with a die holding case 20 having a dome portion 21 with an external surface functioning as a metallic material pressure receiving surface 22, the metallic material pressure receiving surface 22 being disposed so as to face rearward, a male die 30 held in the die holding case 21, and a female die 40 held in a front portion of the die holding case 20. The metallic material pressure receiving surface 22 is formed into a convex configuration, and a porthole 24 is formed in the dome portion 21. The central axis A2 of the porthole 24 is inclined to the central axis A1 of the die holding case 20. The metallic material pressed against the metallic material pressure receiving surface 22 is introduced into the die holding case 20 through the porthole 24 and passes through the extrusion hole 11.
Inventors:
Hiramoto Koju
Hidekazu Sakihama
Hidekazu Sakihama
Application Number:
JP2006243636A
Publication Date:
March 07, 2012
Filing Date:
September 08, 2006
Export Citation:
Assignee:
SHOWA DENKO K.K.
International Classes:
B21C25/02
Domestic Patent References:
| JP2280912A | ||||
| JP7171614A | ||||
| JP2003191009A |
Attorney, Agent or Firm:
Hisayoshi Shimizu
Ken Takada
Yoshihito Shimizu
Ken Takada
Yoshihito Shimizu