A kind of preparation method of wear-resistant tungsten carbide alloy material
A tungsten carbide alloy, tungsten carbide technology, applied in the direction of carbide, tungsten/molybdenum carbide, etc., can solve the problems of low mechanical strength, poor wear resistance, etc., to improve wear resistance, reduce wear, and uniform crystal grain size. Effect
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[0048] Preparation of expanded graphite:
[0049] Weigh the expandable graphite and put it into an oven, dry it at 120-130°C for 12-14 hours, put the dried expandable graphite into a microwave reactor, process it with a power of 1-2kW for 1-2min and then naturally cool to room temperature , and continue to repeat microwave treatment for 3 to 5 times of heating and expansion to obtain expanded graphite;
[0050] Preparation of layered tungsten carbide powder:
[0051] Mix the above-mentioned expanded graphite with 1 mol / L ammonium tungstate solution and starch according to the mass ratio of 10:50:1, put them in an evaporating dish, heat up to 100-110 °C, heat preservation, evaporation and crystallization until the solution The water evaporates completely;
[0052] Preparation of Nanotubular Particles:
[0053] Grind the above-mentioned evaporative crystallized product into 500-600 mesh particles, mix it with ammonium bicarbonate and polyvinyl alcohol in a mass ratio of 1:1:10,...
example 1
[0060] Preparation of expanded graphite:
[0061] Weigh the expandable graphite and put it in an oven, dry it at 120°C for 12 hours, put the dried expandable graphite into a microwave reactor, treat it with a power of 1kW for 1min, then naturally cool to room temperature, and continue to repeat microwave treatment for heating and expansion for 3 times, to obtain expanded graphite;
[0062] Preparation of layered tungsten carbide powder:
[0063] According to the mass ratio of 10:50:1, the above-mentioned expanded graphite, ammonium tungstate solution with a concentration of 1mol / L and starch are mixed and placed in an evaporating dish, heated to 100 ° C, and thermally evaporated and crystallized until the water in the solution is completely Evaporation ends;
[0064] Preparation of Nanotubular Particles:
[0065] Grind the above-mentioned evaporative crystallization process into 500 mesh particles, mix it with ammonium bicarbonate and polyvinyl alcohol in a mass ratio of 1:...
example 2
[0072] Preparation of expanded graphite:
[0073] Weigh the expandable graphite and put it into an oven, dry it at 120-130°C for 13 hours, put the dried expandable graphite into a microwave reactor, treat it with a power of 1kW for 2 minutes, and then naturally cool to room temperature, and continue to repeat microwave treatment for heating. Expand 4 times to obtain expanded graphite;
[0074] Preparation of layered tungsten carbide powder:
[0075] According to the mass ratio of 10:50:1, the above-mentioned expanded graphite, ammonium tungstate solution with a concentration of 1 mol / L and starch were mixed and put into an evaporating dish, heated to 105 ° C, and heat preservation, evaporation and crystallization treatment until the water in the solution was completely Evaporation ends;
[0076] Preparation of Nanotubular Particles:
[0077] Grind the above-mentioned evaporative crystallization process into 550 mesh particles, mix it with ammonium bicarbonate and polyvinyl ...
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