| 摘要 |
The invention relates to powder metallurgy technique, where drums are used for grinding powders, for example, of hard-alloy mixtures containing carbides (tungsten, titanium etc.) and metals (cobalt, nickel etc.), and provides decrease of the coefficient of friction of mixture over internal drum surface. A drum for grinding powder materials has a cylindrical housing installed with possibility of rotation, on internal surface of which elements for displacing of powder and grinding balls are rigidly fixed; moreover the elements for displacing of powder and grinding balls are made in the form of longitudinally located edges displaced in circular direction, which ends are fixed in the grooves of the rings pressed in the ends of housing. |
