Steel core wire replaces the tungsten filament manufacture craft of molybdenum filament
Technical field
The present invention relates to filament field, is exactly the tungsten filament manufacture craft that a kind of steel core wire replaces molybdenum filament.
Background technology
Tungsten filament is used as except the reinforcement of the exothermic material of high temperature furnace, the heater of electron tube and composite material etc. except a small amount of, and the overwhelming majority is all for the electrode of the filament and gaseous discharge lamp that make various incandescent lamp and tungsten halogen lamp.
Illuminator lamp wire material is generally tungsten and molybdenum material in the world at present.Along with industrial expansion, raw-material resource is more and more in short supply, and national tungsten Mineral Resource declines rapidly, new tungsten can be replaced for the material of illuminator lamp silk in the urgent need to having.
Summary of the invention
The object of this invention is to provide the tungsten filament manufacture craft that a kind of steel core wire replaces molybdenum filament.
Above-mentioned purpose is realized by following scheme:
Steel core wire replaces the tungsten filament manufacture craft of molybdenum filament, comprises single-filament triple-helix lamp filament coiling, it is characterized in that comprising the following steps:
(1), steel core wire after sodium hydroxide solution electrolytic cleaning is deoiled, then cleans through running water, then dries, then row's silk take-up;
(2), the first spiral adopts steel core wire to be heart yearn, with tungsten filament, molybdenum filament continuous coiling second spiral, triple helical;
(3), a high-temperature shaping, setting temperature is 1140-1200 DEG C, and the time is 8-10 minute;
(4), after cooling, fall steel core wire, but insoluble tungsten filament, molybdenum filament with the solubilize of nitric acid, hydrochloric acid composition, clean up;
(6), secondary high-temperature sizing, setting temperature is 1350-1400 DEG C, and the time is 10-12 minute, then melt fall molybdenum filament, obtain filament.
The concentration of described sodium hydroxide solution is 8-12%.
Described steel core wire replaces the tungsten filament manufacture craft of molybdenum filament, it is characterized in that: the filament after secondary high-temperature sizing, adds after boiling 5-8 minute in boiled 8-12% sodium hydrate aqueous solution, more repeatedly use tap water; And then boil 5-8 minute pass fire again after opening with poach such as distillation poach, clean repeatedly with running water, finally enter oven for drying with after absolute ethyl alcohol dehydration.
Beneficial effect of the present invention is: the present invention utilizes ordinary metallic material steel core wire to instead of tungsten and molybdenum material, has saved rare metal resources, has reduced cost.
Embodiment
Steel core wire replaces the tungsten filament manufacture craft of molybdenum filament, comprises single-filament triple-helix lamp filament coiling, comprises the following steps:
(1), steel core wire after 10% sodium hydroxide solution electrolytic cleaning is deoiled, then cleans through running water, then dries, then row's silk take-up;
(2), the first spiral adopts φ 0.08mm steel core wire to be heart yearn, with tungsten filament, molybdenum filament continuous coiling second spiral, triple helical;
(3), a high-temperature shaping, setting temperature is 1160 DEG C, and the time is 10 minutes;
(4), after cooling, fall steel core wire, but insoluble tungsten filament, molybdenum filament with the solubilize of nitric acid, hydrochloric acid composition, clean up;
(6), secondary high-temperature sizing, setting temperature is 1350 DEG C, and the time is 10 minutes, then melt fall molybdenum filament, obtain filament.Filament after secondary high-temperature sizing, adds after boiling 8 minutes in 10% boiled sodium hydrate aqueous solution, more repeatedly uses tap water; And then boil 5 minutes pass fire again after opening with poach such as distillation poach, clean repeatedly with running water, finally enter oven for drying with after absolute ethyl alcohol dehydration.