Production method for porcelain shell used for ultrahigh-voltage power capacitor
A technology for power capacitors and production methods, applied in the field of ceramic sleeves for ultra-high voltage power capacitors, can solve the problems of aging of the porcelain body, damage to the insulation of the casing, and explosion of the casing, and achieve good bending resistance, improved voltage quality, and good mechanical strength. Effect
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Embodiment 1
[0020] A production method of an ultra-high voltage power capacitor porcelain sleeve: (1) Raw material production process steps:
[0021] ①Put 48 kg of bauxite, 9 kg of mullite fine powder, 15 kg of Hubei mud, 12 kg of Shanxi Zuoyun mud, 10 kg of Fujian mud, and 16 kg of feldspar powder into a ball mill for 23 hours; ②Use Sieve through 250 mesh sieve to remove iron, and the fineness is strictly controlled at 1.3% of the balance of 250 mesh sieve before the slurry in the ball mill can be put into the slurry tank. ③Squeeze the slurry to dewater and roughen it, put it into the slurry tank, and pump it into the mud extractor to squeeze the slurry; ④Place the roughed slurry in a stale room with a room temperature of 30°C and a humidity of 75%. Indoor stale for 120 hours.
[0022] (2) Forming process steps:
[0023] The stale mud is refined by a vacuum mud refining machine, and the water content of the mud is 18.20% during refining; the parabola apex offset in the extruded mud sec...
Embodiment 2
[0027] (1) Raw material production process steps:
[0028] ①Put 47 kg of bauxite, 10 kg of mullite fine powder, 14 kg of Hubei mud, 10 kg of Shanxi Zuoyun mud, 11 kg of Fujian mud, and 15 kg of feldspar powder into a ball mill for 24 hours; ②Use Sieve through 250 mesh sieve to remove iron, and the fineness is strictly controlled at 1.2% of the balance of 250 mesh sieve before the slurry in the ball mill can be put into the slurry tank. ③Squeeze the slurry to dewater and roughen it, put it into the slurry tank, and pump it into the mud extractor to squeeze the slurry; ④Place the roughed slurry in a stale room with a room temperature of 30°C and a humidity of 75%. Indoor stale 110 hours.
[0029] (2) Forming process steps:
[0030] The stale mud is refined by a vacuum mud refining machine, and the water content of the mud is 17.80% during refining; the parabola apex offset in the extruded mud section structure does not exceed 0.5% of the mud section diameter, and the maximum d...
Embodiment 3
[0034] (1) Raw material production process steps:
[0035] ①Put 45 kg of bauxite, 9 kg of mullite fine powder, 13 kg of Hubei mud, 12 kg of Shanxi Zuoyun mud, 10 kg of Fujian mud, and 15 kg of feldspar powder into a ball mill for 25 hours of ball milling; ②Use Sieve through 250 mesh sieve to remove iron, and the fineness is strictly controlled between 0.9% of the 250 mesh sieve before the slurry in the ball mill can be put into the slurry tank. ③Squeeze the slurry to dewater and roughen it, put it into the slurry tank, and pump it into the mud extractor to squeeze the slurry; ④Place the roughed slurry in a stale room with a room temperature of 28°C and a humidity of 75%. Indoor stale for 100 hours.
[0036] (2) Forming process steps:
[0037] The stale mud is refined by a vacuum mud refining machine, the water content of the mud is 18.0% during refining, and the moisture deviation of the extruded mud section is controlled at ±0.8%; the parabola apex offset in the extruded mu...
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