Title:
粉末成形体の成形方法
Document Type and Number:
Japanese Patent JP4582497
Kind Code:
B2
Abstract:
[Object] By forming a fine and uniform film of lubricant on a moldin g portion, high density powder molding product can be obtai ned with stable. [Solving Means] A powder molding product may be formed by that a forming portion 1A in a mold body 2 is filled with a raw powder and upper and lower punches 3,4 are fitted into the forming portion 1A to form the powder molding product. Prior to filling with the raw powder M, aqueous solution L in which water soluble lubricant having at least 3g of solubility for 100 g of water is dissolved in water to uniform phase is applied to a mold portion 1A and then the aqueous solution L is evaporated, thus forming a crystallized layer B on the molding portion 1A by forming crystal. Thus, the fine and uniform layer B for lubrication is formed on the peripheral surface of the molding portion 1A, thereby enabling the reducing of a pressure required for ejecting the powder molding product A from the molding portion 1A as well as the improving of the density of the powder molding product A, and realizing the stable and successive molding.
Inventors:
Takashi Nakai
Kinya Kawase
Kinya Kawase
Application Number:
JP2004055363A
Publication Date:
November 17, 2010
Filing Date:
February 27, 2004
Export Citation:
Assignee:
Diamet Co., Ltd.
International Classes:
B22F3/035; B30B11/00; B22F3/02; B30B11/02; B30B15/00
Domestic Patent References:
| JP4178546B2 | ||||
| JP2003251499A | ||||
| JP2000199002A |
Attorney, Agent or Firm:
Mamoru Ushiki