Processing method of tungsten filament and additive thereof
An additive and tungsten wire technology, applied in the field of tungsten wire production methods and additives, can solve the problems of long reduction time, low production efficiency, and large amount of addition, and achieve the effects of reducing production processes, improving production efficiency and stable quality
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Embodiment 1
[0024] After dissolving tungsten oxide and silicic acid in water, evaporate and crystallize to obtain the additive for tungsten wire production; the weight ratio of tungsten element and silicon element in the additive is 61.96:0.1.
[0025] A kind of tungsten wire production method of the present invention is as follows:
[0026] A, take the raw material of following parts by weight:
[0027] Tungsten oxide 4500 parts;
[0028] 0.8% additive by weight relative to tungsten oxide;
[0029] 1.5 parts of aluminum nitrate;
[0030] 3500 parts of water;
[0031] b. Put 4500 parts of tungsten oxide in the reactor, add 0.8% additives relative to the weight percentage of tungsten oxide, and then add; then add 3500 parts of water, stir evenly, and dry to obtain a raw material mixture;
[0032] c. The raw material mixture prepared above is reduced in a multi-tube furnace with hydrogen to produce doped tungsten powder. The dew point of hydrogen is -40°C, the flow rate of hydrogen is 1...
Embodiment 2
[0034] After dissolving tungsten oxide and silicate in water, evaporating and crystallizing, the additive for tungsten wire production is obtained; the weight ratio of tungsten element and silicon element in the additive is 61.96:1.1.
[0035] A kind of tungsten wire production method of the present invention is as follows:
[0036] A, take the raw material of following parts by weight:
[0037] Tungsten oxide 5500 parts;
[0038] 1.2% additive relative to tungsten oxide by weight;
[0039] 2.5 parts of aluminum nitrate;
[0040] 4500 parts of water;
[0041] b. Put 5,500 parts of tungsten oxide in the reactor, add 1.2% additive by weight relative to the tungsten oxide, and then add; add 4,500 parts of water, stir evenly, and dry to obtain a raw material mixture;
[0042] c. The raw material mixture prepared above is reduced in a multi-tube furnace with hydrogen to produce doped tungsten powder. The hydrogen dew point is -43°C, the hydrogen flow rate is 1.7 cubic meters pe...
Embodiment 3
[0044] After dissolving tungsten oxide and silicic acid in water, evaporate and crystallize to obtain the additive for tungsten wire production; the weight ratio of tungsten element and silicon element in the additive is 61.96:0.6.
[0045] A kind of tungsten wire production method of the present invention is as follows:
[0046] A, take the raw material of following parts by weight:
[0047] Tungsten oxide 4500~5500 parts;
[0048] 0.8-1.2% additives relative to the weight percentage of tungsten oxide;
[0049] 1.5-2.5 parts of aluminum nitrate;
[0050] 3500-4500 parts of water;
[0051] b. Put 5,000 parts of tungsten oxide in the reactor, add 1.0% additive by weight relative to the tungsten oxide, and then add; then add 4,000 parts of water, stir evenly, and dry to obtain a raw material mixture;
[0052] c. The raw material mixture prepared above is reduced in a multi-tube furnace with hydrogen to produce doped tungsten powder. The hydrogen dew point is -46°C, the hydro...
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