Sintering tungsten boat means the tungsten boat that is applied for sintering tungsten oxide to produce tungsten powder (W powder). This type of tungsten boat has good thermostability at high temperature, so that it can be used in sintering process. The sintering tungsten boat is an important carrier for the preparation of tungsten powder, which reduces the adverse effects of harmful constituents (water, oxygen, nitrogen) on W powder under vacuum sintering. It also helps to eliminate the adsorbed gas, the…

Evaporating tungsten boat is referred to as the tungsten boat that is widely applied in the vacuum evaporation coating industry. This type of tungsten boat is used at high vacuum environment so that its demand of work environment is relatively strict. The evaporating tungsten boat is different from other types of tungsten boat in: This type of tungsten boat is generally composed of a tungsten boat cover and a tungsten boat body. Generally, there are evaporating round hole on the…

Riveting tungsten boat means the tungsten boat that is obtained by riveting a plurality of tungsten plates together. The strength of this type of tungsten boat is high. And its assembly and disassembly are flexible. The assembly can be disassembled and can be reassembled. Therefore, it is easy to replace the damaged parts or troubleshoot faults. It is flexible, simple, and relatively inexpensive. Riveting Tungsten Boat Production Process 1. Drill holes in the connection part of tungsten plate, and then…

Welding tungsten boat means the tungsten boat is produced by welding some tungsten plates into one “boat” at high temperature. The size of the tungsten boat prepared by welding process is relative large. And it can be used to vaporize large-scale devices or evaporate a large amount of materials. Also, it has good high temperature resistance under 2600°C. Compared with riveting tungsten boat, welding tungsten boat can save 10%-20% of tungsten material, and can also reduce the complex processes such…

Folding tungsten boat means the tungsten boat is produced by repeatedly forging and folding, and folding both ends of the plate finally. The tungsten boat is characterized by high hardness and high toughness. Since the ends of this type of boat have been folded for many times, it has the ding of reinforcement, improving the quality. Producing Process of Folding Tungsten Boat 1. Stamp the tungsten plate into the sheet that meets the requirements on size. 2. Bend the sheet…

Stamping tungsten boat is referred to as the tungsten crucible is prepared by stamping process. That is to say, the tungsten boat is produced by hot stamping to plastically deform the tungsten plate into “boat”. Stamping tungsten boat has the characteristics of stable quality, high precision in size and shape, high yield, high hardness, good abrasion resistance, high temperature resistance, low cost, excellent electrical and thermal conductivity. What’s more, it is not easily to be damaged with long working life.…