Tungsten
High-temperature melting containers and components
Tungsten crucibles:
Used for melting high-purity quartz glass, because the melting point of tungsten is much higher than the softening point of quartz glass, and it does not react with SiO₂.
Limitation: Must be used in an inert atmosphere (such as argon) to avoid high-temperature oxidation.
Heating electrodes
In the production of quartz glass by the electrofusion method, tungsten electrodes can withstand high temperatures above 2000°C.
Molybdenum
Molybdenum electrode and glass sealing:
The thermal expansion coefficient of molybdenum (~5.3×10⁻⁶/K) is close to that of borosilicate glass, so it is used for sealing high-pressure sodium lamps, laser tubes and other electro-vacuum devices.
Key process: Surface oxidation to form a MoO₂ layer to enhance the bonding with glass.
Sealing of quartz glass and metal:
Molybdenum foil is used as an intermediate layer to relieve the thermal stress between quartz glass (0.5×10⁻⁶/K) and metals (such as Kovar alloy).
According to your needs, we can carry out customized production, and also produce and process according to drawings.
Our equipment has the production capacity to handle bulk orders and mass production.
Our materials have higher purity. Each batch of materials undergoes a full inspection to ensure the consistency and stability of the materials.
Our production is more standardized, with more precise dimensions and longer service life of the products.
Our production cycle is shorter, enabling us to complete the production of orders more quickly.
Our products: glass melting electrodes, molybdenum electrodes, molybdenum material racks, tungsten crucibles, tungsten electrodes, molybdenum crucibles.
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