ABRASIVE PARTICLES HAVING COMPLEX SHAPES AND METHODS OF FORMING THEREOF Russian patent published in 2016 - IPC B24D3/00 

FIELD: technological processes.

SUBSTANCE: invention relates to molding abrasive articles. Shaped abrasive particle contains a particle body having length (l), width (w) and height (h), herewith the body comprises a supporting end surface, a top surface and a side surface extending between the supporting surface and the top surface, herewith the supporting end surface is cruciate, and the top surface features a shape differing from the supporting end surface one. In another version the particle contains a body including the first layer having a first length and the second layer, which overlaps the first layer and has a length between approximately 50 % and approximately 90 % of the length of the first layer. In the third version the particle body contains a three-pointed star with three arms, wherein the second arm and the third arm form an angle which is less than 180°, and the main part has a coefficient of bending, which is not more than 10, defined as the ratio between the highest height (ht) of the main part in one tip of the arm and the minimum height (hi) of the main part in the inner area. In the fourth version the main part of the particle contains a four-pointed star with four arms extending from the central part and with a coefficient of bending, which is not more than 10.

EFFECT: improving performance characteristics of abrasive articles and their service life.

30 cl, 3 ex, 69 dwg