PULVERIZATION OF MATERIAL FOR INJECTION MOLDING OF METALLIC POWDER

Title:

PULVERIZATION OF MATERIAL FOR INJECTION MOLDING OF METALLIC POWDER

Document Type and Number:

Japanese Patent JPH08170102

Kind Code:

A

Abstract:

PURPOSE: To improve the efficiency of recovering pulverized matter at the time of pulverizing a material for injection molding of metallic powder.

CONSTITUTION: Liquid nitrogen is supplied into a pulverizing vessel 4 from a liquid nitrogen cylinder 19 to cool sprue runners 3 at the time of pulverizing the sprue. runners 3 consisting of the green compacts formed by injection molding of the material for injection molding of the metallic powder in the pulverizing vessel 4. At this time, the sprue. runners 3 are cooled to the m.p. of a binder contg. the lowest m.p. among the binder components included in the sprue. runners 3. As a result, the tacky adhesiveness of the sprue. runners 3 is degraded and the sprue. runners 3 do not stick to the inside of a pulverizing machine 1 any more.

Inventors:

YAMAMOTO SHOJI
KODAMA TAKUYA
HAGA KENJI
NAKANO TADAHIRO

Application Number:

JP31315994A

Publication Date:

July 02, 1996

Filing Date:

December 16, 1994

Export Citation:

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Assignee:

OLYMPUS OPTICAL CO

International Classes:

B29B13/10; B22F1/00; B22F3/02; B29B17/00; B29B17/04; B29K105/26; (IPC1-7): B22F3/02; B22F1/00; B29B13/10

Attorney, Agent or Firm:

Takeshi Nara

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