Manufacturing method of crucible for vacuum induction melting of high-temperature alloy
A technology of vacuum induction melting and high temperature alloy, applied in the field of metallurgy, can solve the problems of poor high temperature chemical stability of pure corundum, cannot be used as a high temperature alloy, poor thermal shock stability, etc., and achieves high temperature chemical stability and thermal shock resistance. The effect of strong melt scouring ability and high bonding strength
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Embodiment 2
[0023] The manufacture of a crucible for vacuum induction melting superalloys includes the following steps:
[0024] 1) After weighing according to the ratio in Table 1, mix it with a dispersant and a binder to obtain a uniform slurry. The dispersant used is ammonium polyacrylate, and the amount added is 1.5% of the total mass of the raw materials. The binder is acrylamide and N, The mixed aqueous solution of N'-methylenebisacrylamide, the mass ratio of the two is 10:1, the total mass percentage concentration of the mixed aqueous solution is 14%, and the addition of the binder is 10% of the total mass of raw materials;
[0025] 2) Add an initiator to the slurry obtained in step 1), mix at 25° C. for 6 minutes, the initiator is piperidine hydrochloride, and the amount added is 0.2% of the total mass of the slurry;
[0026] 3) The slurry obtained in step 2) was vacuum-degassed at 25° C. for 5 minutes, and immediately poured into a crucible forming mold, wherein the degassing vac...
Embodiment 3
[0030] The manufacture of a crucible for vacuum induction melting superalloys includes the following steps:
[0031] 1) After weighing according to the ratio in Table 1, mix it with a dispersant and a binder to obtain a uniform slurry. The dispersant used is ammonium polyacrylate, and the amount added is 2% of the total mass of the raw materials. The binder is acrylamide and N, The mixed aqueous solution of N'-methylenebisacrylamide, the mass ratio of the two is 10:1, the total mass percentage concentration of the mixed aqueous solution is 14%, and the addition of the binder is 15% of the total mass of raw materials;
[0032] 2) Add an initiator to the slurry obtained in step 1), mix at 20°C for 8 minutes, the initiator is 2,2'-azo hydrochloride, and the amount added is 0.15% of the total mass of the slurry;
[0033] 3) The slurry obtained in step 2) was vacuum-degassed at 20° C. for 5 minutes, and immediately poured into a crucible forming mold, wherein the degassing vacuum d...
Embodiment 4
[0037] 1) After weighing according to the ratio in Table 1, mix it with a dispersant and a binder to obtain a uniform slurry. The dispersant used is ammonium polyacrylate, and the amount added is 1% of the total mass of the raw materials. The binder is acrylamide and N. The mixed aqueous solution of N′-methylenebisacrylamide, the mass ratio of the two is 10:1, the total mass percentage concentration of the mixed aqueous solution is 14%, and the addition amount of the binder is 8% of the total mass of raw materials;
[0038] 2) Add an initiator to the slurry obtained in step 1), mix at 15°C for 10 minutes, the initiator is piperidine hydrochloride, and the amount added is 0.1% of the total mass of the slurry;
[0039] 3) The slurry obtained in step 2) was vacuum degassed at 15°C for 5 minutes, and immediately poured into a crucible forming mold, wherein the degassed vacuum degree was 6Pa;
[0040] 4) Heating together with the mold to 55°C for 35 minutes to remove the mold, and ...
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