HARD-FACING MATERIALS INCLUDING PCA-PARTICLES, WELDING BARS AND DRILL TOOLS WITH SUCH MATERIALS, METHODS OF THEIR PRODUCTION AND APPLICATION

摘要

FIELD: process engineering.SUBSTANCE: set of invention relates to drill tools and their hard-facing. Drill tool comprises at least one cutting element on the body, hard-facing material on at least a part of body surface including metal matrix material and particles of polycrystalline diamond material embedded in metal matrix material and including multiple bonded diamond small crystals. Particles of polycrystalline diamond material comprise fragments of one or several layers of polycrystalline diamond materials.EFFECT: higher resistance to wear and erosion.15 cl, 8 dwg