High-temperature-resistant main shielding cylinder for vacuum arc-extinguishing chamber and manufacturing method thereof
A technology of vacuum interrupter and shielding cylinder, which is used in high-voltage air circuit breakers, high-voltage/high-current switches, electrical components, etc. Problems such as burning of the inner wall surface of the shielding cylinder
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Embodiment 1
[0028]S1. Pretreatment of the main shielding tube 1: After the main shielding tube 1 is manufactured, sandblast the inner wall to remove the burrs on the inner wall surface, then polish the inner wall, and finally blow off the floating and sinking, so that the main The inner wall of the shielding cylinder 1 is kept flat and smooth;
[0029] S2. Preparation of mixed material A: put 10 parts of silicon carbide, 8 parts of zirconia, 7 parts of silicon nitride, 4 parts of aluminum oxide, 4 parts of magnesium oxide and 10 parts of additives into the ball mill in turn, and turn it at 200rpm Stir for 25 minutes, after mixing evenly, continue to add 8 parts of diatomaceous earth into the ball mill, and mix and stir for 10 minutes to obtain the mixed material A, waiting for use;
[0030] S3. Preparation of mixed material B: put 12 parts of ceramic micropowder, 8 parts of copper powder, 6 parts of graphite powder and 6 parts of thermal conductive silicone grease into the high-speed disp...
Embodiment 2
[0034] S1. Pretreatment of the main shielding tube 1: After the main shielding tube 1 is manufactured, sandblast the inner wall to remove the burrs on the inner wall surface, then polish the inner wall, and finally blow off the floating and sinking, so that the main The inner wall of the shielding cylinder 1 is kept flat and smooth;
[0035] S2. Preparation of mixed material A: Put 11 parts of silicon carbide, 9 parts of zirconia, 8 parts of silicon nitride, 5 parts of aluminum oxide, 5 parts of magnesium oxide and 11 parts of additives into the ball mill in turn, and turn at 400rpm Stir for 30 minutes, after mixing evenly, continue to add 9 parts of diatomaceous earth into the ball mill, and mix and stir for 12 minutes to obtain the mixed material A, waiting for use;
[0036] S3. Preparation of mixed material B: put 13 parts of ceramic micropowder, 9 parts of copper powder, 7 parts of graphite powder and 7 parts of thermal conductive silicone grease into the high-speed disper...
Embodiment 3
[0040] S1. Pretreatment of the main shielding tube 1: After the main shielding tube 1 is manufactured, sandblast the inner wall to remove the burrs on the inner wall surface, then polish the inner wall, and finally blow off the floating and sinking, so that the main The inner wall of the shielding cylinder 1 is kept flat and smooth;
[0041] S2. Preparation of mixed material A: put 12 parts of silicon carbide, 10 parts of zirconia, 9 parts of silicon nitride, 6 parts of aluminum oxide, 6 parts of magnesium oxide and 12 parts of additives into the ball mill in turn, and turn it at 600rpm. Stir for 35 minutes, after mixing evenly, continue to add 10 parts of diatomaceous earth into the ball mill, and mix and stir for 15 minutes to obtain the mixed material A, waiting for use;
[0042] S3. Preparation of mixed material B: put 14 parts of ceramic micropowder, 10 parts of copper powder, 8 parts of graphite powder and 8 parts of thermal conductive silicone grease into the high-speed...
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Abstract
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