21-04-2010 дата публикации
Номер: CN0101695754A
Принадлежит:
The invention discloses a method for preparing a mixture for use in the production of a submicrometer hard alloy. In the method, WC powder and Co power, which are in medium particle size, are used as raw materials, a grain growth inhibitor is added during material mixing, a stirring ball mill is adopted for ball milling, alcohol is used as a ball milling medium, a compound dispersant is added in the ball milling medium, the compound dispersant consist of oleic acid and polyethylene glycol, and 1 to 3 grams of oleic acid and 1 to 3 grams of polyethylene glycol are added in each kilogram of WC and Co powder raw materials. Compared with the prior art, the invention has the following outstanding advantages: 1, the ball milling efficiency is improved greatly and the ball milling time is reduced obviously; 2, the requirements on the granularity of raw materials are reduced; 3, the particle dispersity of the wetly-milled mixture is higher; and 4, the inhibition effect on the WC grains is more ...
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