A tungsten crucible provides the high-temperature resistance and chemical stability required for melting high-purity quartz glass. Tungsten heating electrodes can also withstand the extreme temperatures used in electrofusion systems.
Typical applications include:
High-purity quartz glass melting
Electrofusion heating systems
High-temperature furnace components
Tungsten components should generally be used in vacuum or an inert atmosphere to reduce oxidation at elevated temperatures.
A high-purity molybdenum electrode offers reliable electrical conductivity and dimensional stability during molybdenum glass melting. GEMEI can supply customized molybdenum electrodes for electric glass furnaces according to the required diameter, length and operating conditions.
For glass-to-metal sealing, molybdenum foil helps accommodate differences in thermal expansion and supports reliable sealing in lamps, laser tubes and other electronic vacuum devices.
Typical applications include:
Electric glass melting electrodes
Glass-to-metal sealing components
Lamp and laser tube assemblies
Customized furnace parts
GEMEI provides high-purity tungsten and molybdenum components for glass and quartz glass production, combining custom manufacturing, controlled quality and reliable delivery.
Custom Manufacturing
Components can be produced according to customer drawings, dimensions, tolerances and operating conditions.
Scalable Production Capacity
Our production capabilities support prototypes, small batches and repeat bulk orders.
Consistent Material Quality
Raw materials and finished components are inspected by batch to verify purity, dimensions and surface quality.
Precision Processing
Standardized production and machining help maintain dimensional accuracy, stable performance and reliable service life.
Reliable Order Fulfilment
Coordinated production and inspection processes help shorten lead times while maintaining product consistency.
Products Available for Glass and Quartz Glass Production
Our product range includes molybdenum glass melting electrodes, molybdenum electrodes, tungsten electrodes, tungsten crucibles, molybdenum crucibles, molybdenum foil and custom molybdenum support components.
| Specification | Available Options |
| Material | High-purity molybdenum / Other grades upon request |
| Purity | 99.95% |
| Diameter Range | 5 - 120mm |
| Maximum Length | 2000mm |
| Surface Condition | Machined / Ground / Polished |
| End Connection | Threaded / Tapered / Custom connection |
| Dimensional Tolerance | According to drawings or agreed specifications |
| Secondary Machining | Cutting, drilling, threading and custom machining |
| Inspection | Material, dimensions, straightness and surface inspection |
| Documentation | Analytical Report |
GEMEI supplies high-purity molybdenum electrodes for electric glass furnaces and other demanding molybdenum glass melting applications. Each molybdenum glass melting electrode can be manufactured according to the required furnace design, operating conditions and customer drawings.
Available customization may include different diameters, lengths, surface finishes, end connections and machining requirements. Material purity, dimensional accuracy and surface quality are inspected before shipment to support stable installation and reliable furnace operation.
The appropriate component depends on the glass type, operating temperature, furnace atmosphere, electrical requirements and contamination control. GEMEI supplies tungsten and molybdenum components for glass melting, quartz processing, sealing and high-temperature furnace assemblies.
| Glass Application | Recommended Component | Main Selection Considerations |
| Electric Glass Melting | Molybdenum electrodes | Glass chemistry, electrode diameter, electrical load, surface condition and furnace design |
| High-Purity Quartz Melting | Tungsten crucible | Maximum temperature, crucible dimensions, furnace atmosphere and contamination control |
| Specialty Glass Melting | Molybdenum crucible | Material purity, glass composition, wall thickness and operating temperature |
| Glass-to-Metal Sealing | Molybdenum foil | Foil thickness, thermal expansion, sealing structure and surface condition |
| Glass Furnace Assemblies | Molybdenum supports, heaters and custom parts | Mechanical load, temperature, component geometry and installation method |
| Quartz Glass Electrofusion | Tungsten heating electrodes | Current load, operating temperature, electrode dimensions and oxidation protection |
For customized components, customers should provide drawings, required dimensions, operating temperature, furnace atmosphere, glass composition and expected service conditions.
Molybdenum combines high-temperature strength, electrical conductivity and dimensional stability. These properties make it suitable for continuous molybdenum glass melting in properly controlled furnace environments.
Customers should provide the electrode diameter, length, material purity, connection design, surface condition, quantity, glass type, operating temperature and technical drawings.
Yes. GEMEI can manufacture molybdenum electrodes according to customer drawings, including custom dimensions, threads, tapered connections, surface finishes and inspection requirements.
Service life can be affected by glass chemistry, electrode temperature, electrical loading, furnace atmosphere, surface quality, installation method and contact with oxidizing conditions.
A tungsten crucible is suitable for high-purity quartz melting where very high temperature resistance and low contamination are required. It is generally used under vacuum or a protective atmosphere to reduce oxidation.
Molybdenum foil is commonly used in glass-to-metal sealing structures. Its controlled thickness and thermal behavior help reduce stress between glass and adjoining metal components.
Yes. GEMEI supplies molybdenum crucible products, heaters, supports, boats and other custom components for glass furnaces according to drawings and operating requirements.
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