Melting tungsten in atmospheric conditions is not really useful. You start with tungsten oxide as a gas and it reacts with hydrogen and tungsten powder precipitates out. The powder is then heated and compressed to form a polycrystalline billet (sintering).
Technically speaking, the first step in tig welding aluminum is to melt the tungsten and it forms a little ball. It is not hard to reach the required temperature. You can just put a lightbulb filament in 220 socket and it will melt the tungsten in a split second. That being said, a crucible of molten tungsten is not a thing.
Technically speaking, the first step in tig welding aluminum is to melt the tungsten and it forms a little ball. It is not hard to reach the required temperature. You can just put a lightbulb filament in 220 socket and it will melt the tungsten in a split second. That being said, a crucible of molten tungsten is not a thing.