FIELD: ceramics. SUBSTANCE: ceramics of invention is especially good when used as cutting tool for high-speed chip-forming mechanical metalworking. Ceramics is advantageously composed of at least 85 vol % of silicon beta-nitride and less than about 5 vol % of intergranular space. Material also includes more than 0.2 wt % magnesium oxide and more than 0.2 wt % yttrium oxide, their summary content being below 5 wt %. Porosity of material is less than 0.2 vol %. Front surface of cutting tool is connected through its cutting edges with back surfaces. EFFECT: improved cutting ability. 41 cl, 5 dwg, 4 tbl
| Title | Year | Author | Number |
|---|---|---|---|
| METAL CUTTING TOOL FOR CHIP-FORMING MACHINING, COMPACTED CERAMIC COMPOSITION, PROCESSES OF CHIP-FORMING MACHINING AND COMPACTION OF ARTICLES, PROCESS OF MANUFACTURE OF CUTTING PLATES, CERAMIC ARTICLE | 1994 |
|
RU2107607C1 |
| CUTTING INSERT FOR WORKING MATERIALS, CUTTING TOOL, COATING AT LEAST OF PART OF SUBSTRATE, METHOD FOR MAKING CUTTING TOOL | 1997 |
|
RU2195395C2 |
| METAL-CUTTING INSERT | 0 |
|
SU1838084A3 |
| CUTTING TOOL | 1991 |
|
RU2071869C1 |
| DIAMOND-PLATED TOOL AND METHOD OF ITS MANUFACTURE | 1994 |
|
RU2111846C1 |
| HARD NOSE AND CUTTING TOOL HAVING HARD NOSE WITH PROJECTIONS | 1995 |
|
RU2100601C1 |
| GLASS MASS DROP CUTTING SCISSORS | 1999 |
|
RU2167833C1 |
| BINDER-CONTAINING CERMET WITH ELEVATED PLASTICITY AND A METHOD FOR MANUFACTURE THEREOF | 1998 |
|
RU2212464C2 |
| CUTTING TOOL (VERSIONS) | 1996 |
|
RU2136449C1 |
| CERAMIC AlO TOOLS WITH LAYER REINFORCED BY DIFFUSION BONDING | 2005 |
|
RU2392350C2 |
