Title:
HARD MATERIAL AND METHOD OF MAKING THE SAME FROM AQUEOUS HARD MATERIAL MILLING SLURRY
Document Type and Number:
Japanese Patent JP2015074830
Kind Code:
A
Abstract:
PROBLEM TO BE SOLVED: To provide a method of making a cemented (cobalt) tungsten carbide from an aqueous hard material milling slurry.SOLUTION: An aqueous emulsion for use in aqueous milling of hard material powder components in an aqueous slurry is provided. The aqueous emulsion includes an oxidation inhibitor in an amount of about 0.3 to about 1.2 wt.% of the hard material powder components in the aqueous slurry. The aqueous emulsion also includes a paraffin wax in an amount of about 0.25 to about 0.75 wt.% of the hard material powder components in the aqueous slurry for vacuum dried powder and in an amount of up to 2.75 weight percent of the hard material powder components in the aqueous slurry for spray dried powder. The aqueous emulsion also includes myristic acid in an amount of about 0.10 to about 0.50 wt.% of the hard material powder components in the aqueous slurry. The balance of the aqueous emulsion is water.
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Inventors:
SIVARAMAN GOPALRAO
RAGHAVAN RENGARAJAN
RAMESH SATHYANARAYAN RAO
ALAM RUKHSAR
RAGHAVAN RENGARAJAN
RAMESH SATHYANARAYAN RAO
ALAM RUKHSAR
Application Number:
JP2014204592A
Publication Date:
April 20, 2015
Filing Date:
October 03, 2014
Export Citation:
Assignee:
KENNAMETAL INDIA LTD
International Classes:
C22C29/08; B22F1/00; B22F1/10; B22F9/04; C22C1/05
Attorney, Agent or Firm:
Atsushi Nakajima
Kato Kazunori
Kato Kazunori
Previous Patent: JP2015074829
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