GLASS FIBER
Fiberglass tank furnace molybdenum electrode
Rod Ø20–80mm | Length ≤1500mm | Sidewall or bottom installation
WeiBeam · Electrode solutions for high-temperature melting
These electrodes are used in the electric boosting stage of fiberglass tank furnaces. Installed through the sidewall or the throat, they supplement heating of the glass melt to stabilize melting temperature and deliver glass with uniform viscosity to the bushing. Fiberglass tanks run continuously for long periods, so dimensional accuracy and erosion resistance are critical. Standard rods are Ø20–80mm and up to 1500mm long, installed in the sidewall or bottom, with a long-term working temperature of about 1300 °C.
We provide selection and custom sizing for different tank designs, matching the drawing process, electrode ports and power supply, and support installation and operation.
In high-temperature melting and thermal-field systems this part is often used alongside electrodes elsewhere in the line. We recommend selecting them together against furnace structure, assembly method and working temperature to reduce thermal-expansion mismatch between different materials.
FEATURES
Fiberglass tank furnace molybdenum electrode — key features
Core characteristics for furnace conditions and operating requirements.
Fits tank layout
Ø20–80mm rods for sidewall, bottom or throat installation.
Steadier melting
Electric boosting evens out melt temperature and viscosity for bushing drawing.
Erosion resistant
High-purity molybdenum remains stable in glass melt at about 1300 °C.
Custom sizes
Diameter, length and connections set by tank structure and electrode ports.
SPECIFICATIONS
Specification data
Electrodes are controlled to YS/T 1312-2019 and accepted under a mutual technical agreement. Special sizes can be customized to furnace conditions.
| Parameter | Specification |
|---|---|
| Process | Fiberglass tank electric boosting and bushing drawing |
| Form | Rod |
| Diameter | Ø20–80mm (customizable) |
| Length | 150–1500mm |
| Installation | Sidewall / bottom / throat |
| Molybdenum content | ≥99.95% |
| Long-term working temperature | ≈1300 °C |
| Standard | YS/T 1312-2019 |
Material and physical properties
| Parameter | Typical value / note |
|---|---|
| Available grades | Mo1 (pure Mo) / MoLa (lanthanum-doped) / TZM (Ti-Zr-Mo) / Mo-Zr ODS |
| Molybdenum content | ≥99.95% (higher purity by technical agreement) |
| Density | ≥10.2 g/cm³ (varies slightly by grade and condition) |
| Melting point | ≈2620–2623 °C |
| Resistivity (20 °C) | ≈0.053 µΩ·m |
| Conductivity | ≥30% IACS |
| Thermal expansion | ≈5.25×10⁻⁶/°C |
| Elastic modulus | ≈315 GPa |
| Hardness | ≥85 HRB (by grade and condition) |
| Standards | Electrodes to YS/T 1312-2019; rods to ASTM B387 / GB/T 17792; plate and discs to ASTM B386 / GB/T 3876; other parts by technical agreement |
| Factory inspection | Spectral composition, density, metallography, ultrasonic inspection, dimensions and appearance |
| Delivery documents | Mill certificate with full batch traceability |
Typical values for pure molybdenum. MoLa, TZM and special sizes follow the mutual technical agreement and the test report supplied with each batch.
FAQ
Common questions
Selection, customization and quotation questions.
How is the price of a fiberglass tank electrode determined?
Price depends on diameter, length, material and order quantity, so it is quoted per specification. Share the tank tonnage, electrode ports and required quantity and we will quote accordingly.
What is the best electrode layout for a fiberglass tank?
Layout depends on tank structure, drawing process and power supply. Sidewall or bottom installation is common. With the furnace drawing and process data, our engineers recommend positions and quantities to improve temperature uniformity.
How long do fiberglass tank electrodes last?
Service life depends on melting temperature, glass chemistry, current density and layout. Keeping current density at 1–3 A/cm² and matching the material helps extend replacement intervals; actual results should be evaluated against measured data.
CUSTOM
Selection and quotation
Share your furnace structure and process conditions. Our engineers will help select the right electrode and you can request a standard-size sample. We support export customers worldwide with remote technical coordination.