The utility model relates to a visible crucible cover for a sapphire growing furnace
The utility model relates to a visible crucible cover for sapphire growth furnace, which comprises a plurality of layers of ring plate, which is fixed as a whole through a tungsten screw kit, and a U-shaped spacer is arranged between the ring plate and the ring plate; The ring plate is upward and downward, the inner diameter is increasing, the outer diameter is increasing; The annular plates are provided with observation holes that penetrate all the annular plates.
The circular plate comprises several layers of circular molybdenum sheet or tungsten circular plate, or comprises several layers of circular molybdenum plates and at least one layer of circular tungsten circular plate, and the circular molybdenum plate is arranged above the circular tungsten circular plate.
The tungsten screw kit comprises a tungsten screw, a screw cap, a tungsten aluminum wire, a tungsten screw is threaded in all the ring plate, one end of the tungsten screw is threaded with a screw cap, the other end of the tungsten screw is provided with at least one radial fixed through hole, the tungsten aluminum wire is threaded in a fixed through hole.
Wrap the tungsten aluminum wire and tungsten screw tightly with tungsten rope.
The tungsten screw kit is uniformly arranged on the outside of the ring plate, and one end of the U-shaped spacer is arranged on the tungsten screw kit.
