FIELD: powder metallurgy, namely manufacture of hard-alloy tools.
SUBSTANCE: method comprises steps of preparing powdered mixture including carbide-containing components with normalized size of grains and cobalt component; shaping blank and sintering it; using cobalt component saturated with tungsten and carbon. Saturation of cobalt component is realized preliminarily at obtaining solid solution cobalt-tungsten-carbon then to be disintegrated. Quantity of tungsten in such solid solution is in range 15 - 18%. Cobalt component is obtained by mixing 2/3 of mass of cobalt component of disintegrated solid solution cobalt-tungsten-carbon and 1/3 of cobalt powder.
EFFECT: possibility for producing tool with high resistance against cracking and improved efficiency.
4 cl, 4 ex
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Authors
Dates
2005-11-20—Published
2004-11-09—Filed