METHOD OF ABRASIVE ARTICLE PRODUCTION AND ABRASIVE ARTICLE PRODUCED Russian patent published in 2000 - IPC

FIELD: production of abrasive equipment and tools. SUBSTANCE: method includes formation of semiproduct from mixture containing diamond particles of different sizes differing by at least twofold. These particles are arranged in mold according to preset scheme, for example, particles of higher concentration are placed at one of surfaces. Then semiproduct is subjected to thermal treatment to form semiproduct containing diamond and carbon. Semiproduct obtained is impregnated with liquid silicon. Abrasive article represents composite matrix of which formed of silicon carbide and silicon contains diamond crystals of different sizes. In this case, part of article includes diamond crystals of at least one size in higher concentration than other parts of article. EFFECT: production of abrasive article of preset form and sizes. 21 cl, 2 dwg, 1 tbl, 2 ex