SiSiC high-temperature ceramic furnace bottom plate for annular furnace and preparation method for bottom plate
A technology for high-temperature ceramics and furnace bottom plates, which is applied in the field of high-temperature ceramics, and can solve the problems of cracking and damage to the furnace bottom plate, service life of the furnace bottom plate, bending and deformation of the furnace bottom plate, and poor high-temperature resistance, and achieve low cost, good creep resistance, and thermal shock resistance. good sex effect
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Embodiment 1
[0032] Weigh 30 kg of large SiC particles, 20 kg of small SiC particles, 45 kg of fine SiC powder and 10 kg of carbon powder, add 4 kg of phenolic resin, and mix and grind them in a mixer to make a mud. The mud is put into the mold, and a conventional ramming molding method is used to form a wet blank of the furnace floor.
[0033] The wet billet was put into a drying furnace and kept at 110°C for 32 hours, and then kept in a sintering furnace at 1700°C and a vacuum degree of less than 30 Pa for 36 hours to obtain a bottom plate blank.
[0034] The blank is subjected to mechanical processing to obtain SiSiC high-temperature ceramic furnace floor.
Embodiment 2
[0036] Weigh 50 kg of large SiC particles, 15 kg of small SiC particles, 30 kg of fine SiC powder and 5 kg of carbon powder, add 6 kg of phenolic resin, and mix and grind them in a mixer to make a mud. The mud is put into the mold, and a conventional ramming molding method is used to form a wet blank of the furnace floor.
[0037] The wet billet was put into a drying furnace and kept at 110°C for 72 hours, and then kept in a sintering furnace at 1850°C and a vacuum degree of less than 80 Pa for 20 hours to obtain a bottom plate blank.
[0038] The blank is subjected to mechanical processing to obtain SiSiC high-temperature ceramic furnace floor.
Embodiment 3
[0040] Weigh 50 kg of large SiC particles, 18 kg of small SiC particles, 25 kg of fine SiC powder and 1 kg of carbon powder, add 9 kg of silica sol, and mix and grind in a mixer to make a mud. The mud is put into the mold, and a conventional ramming molding method is used to form a wet blank of the furnace floor.
[0041] The wet billet was put into a drying furnace and held at 110°C for 72 hours, and then held in a sintering furnace at 1850°C and a vacuum degree of less than 20 Pa for 6 hours to obtain a bottom plate blank.
[0042] The blank is subjected to mechanical processing to obtain SiSiC high-temperature ceramic furnace floor.
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Abstract
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