Anti-abrasion metal-ceramic composite product and preparation method thereof
A metal-ceramic composite and metal-ceramic technology is applied in the field of preparation of wear-resistant and wearing parts, which can solve the problems of low comprehensive mechanical properties, waste, wear resources, etc., and achieve the effects of perfect mechanical properties, stable product quality, and guaranteed service life.
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Embodiment 1
[0051] The preparation method of the present invention used as ball mill grinding ball in cement plant
[0052] First, silicon carbide ceramic particles with a particle size of 3-4 mm in diameter and metal powder with a particle size of 100 mesh to 200 mesh (including 25% of high-carbon ferrochrome metal powder, 1% of molybdenum iron powder, 73% of iron powder, and 1% of carbon powder ) is mixed uniformly with zinc stearate to obtain a mixture, wherein silicon carbide particles account for 50% of the total weight of the metal powder, and zinc stearate accounts for 0.2% of the total weight of the metal powder.
[0053] 1. Pour the mixture into a ball mold with a diameter of 100mm, and compact it with a pressure of 300MPa on a press.
[0054] 2. After demolding, put the metal-ceramic mixture prefabricated part into the atmosphere furnace for sintering to obtain semi-finished grinding balls.
[0055] 3. The atmosphere in the atmosphere furnace is decomposed ammonia gas, the sint...
Embodiment 2
[0060] Preparation method of the present invention used as grinding ball for power plant coal mill
[0061] First, mix aluminum oxide ceramic particles with a particle size of 2-3 mm in diameter and metal powder with a particle size of 100 mesh to 200 mesh (including high-carbon ferrochromium metal powder 10%, iron powder 87.5%, and carbon powder 2.5%) with engine oil. A homogeneous mixture was obtained. Among them, aluminum oxide ceramic particles account for 40% of the total weight of the metal powder, and engine oil accounts for 1% of the total weight.
[0062] 1. Pour the mixture into a ball mold with a diameter of 60mm, and compact it with a pressure of 250MPa on a press.
[0063] 2. After demoulding, put the metal-ceramic mixture prefabricated part into the atmosphere furnace for sintering to obtain semi-finished grinding balls.
[0064] 3. The atmosphere in the atmosphere furnace is decomposed ammonia gas, the sintering temperature is 1220°C, and the sintering time is...
Embodiment 3
[0069] The preparation method of the present invention used as ball mill grinding balls for mine concentrators
[0070] First, zirconia ceramic particles with a particle size diameter of 2mm and metal powder with a particle size of 100-200 mesh (including 15% of high-carbon ferrochromium metal powder, 83.2% of iron powder and 1.8% of carbon powder) are mixed with water to obtain a mixture. Among them, zirconia ceramic particles account for 30% of the total weight of the metal powder, and water accounts for 2% of the total weight.
[0071] 1. Pour the mixture into a ball mold with a diameter of 50MM, and compact it with a pressure of 220Mpa on a press.
[0072] 2. After demoulding, put the mixture preform into the atmosphere furnace for sintering.
[0073] 3. The atmosphere in the atmosphere furnace is decomposed ammonia gas, the sintering temperature is 1250°C, and the sintering time is 45 minutes. Get semi-finished grinding balls.
[0074] 4. Put the semi-finished grinding...
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