⚙️ ⚙️ Product Overview

A Molybdenum Electrode is an industrial conductive industrial conductive component primarily composed of high-purity metallic Molybdenum. It serves as a critical component in high-temperature industrial furnaces, such as those used for glass melting and rare earth smelting, due to its exceptional properties including a high melting point, significant high-temperature strength, and strong resistance to molten glass corrosion.

Thanks to its characteristic that corrosion products scarcely contaminate the glass melt, Molybdenum Electrodes are indispensable in the production of specialty glasses where extreme purity is paramount.

✨ Core Characteristics

Exceptional Temperature Resistance

• Extremely High Melting Point: Reaches 2620°C, ensuring structural and functional stability in extreme heat.
• Broad Operating Range: Capable of stable operation within environments ranging from 1300°C to 1600°C, demonstrating long service life even in glass melts at 1300°C.

High Strength & Durability

• Excellent Mechanical Properties: Exhibits a high tensile strength of 676-696 MPa at room temperature, providing robust load-bearing capacity.
• High-Temperature Creep Resistance: Effectively resists deformation and sagging caused by its own weight and the erosion from glass flow under high temperatures.

Stable Electrical Conductivity

• Low Resistivity: Within the operating temperature range of 700-1300°C, resistivity can be as low as 0.008 Ω008 Ω·m, ensuring highly efficient electrical energy conversion.

Superior Corrosion Resistance

• Demonstrates outstanding resistance outstanding resistance to corrosion from various molten glasses and chemical salt melts (e.g., fluoride systems), thereby extending service life.

High Purity & Cleanliness

• Features extremely high material purity, typically with a Molybdenum content no less than 99.95%, preventing product contamination from impurity leaching at the source.

🔧 Technology & Manufacturing Process

Molybdenum Electrodes are primarily manufactured using advanced Powder Metallurgy processes:

1. Powder Forming: High-purity molybdenum powder with a particle size of 4.5-8.5μm isμm is selected and formed into a green body via isostatic pressing at 150-250 MPa, with a hold time of 15-25 minutes.
2. Precision Sintering: Sintering is conducted in a hydrogen atmosphere through a multi-stage (up to seven stages) gradient process. The final stage involves holding at 2000°C for approximately 20 hours, with the entire sintering cycle potentially exceeding potentially exceeding 50 hours to ensure dense and homogeneous internal structure.
3. Post-Processing: Depending on specific requirements, the sintered blank undergoes various machining operations such as forging, turning, rolling, or even polishing to achieve the desired final shape and dimensions.

🏭 Primary Application Fields

Glass Industry (Core Application)

As the core heating element in electric glass melting furnaces, widely used in:

• Container & Float Glass: e.g., Soda-lime glass, where service life can exceed that of conventional electrodes by more than three times.
• Specialty Glass: Including Optical glass, Borosilicate glass, and Barium Flint glass. For instance, in Barium Flint glass production, approximately 1.2 tons of glass batch can be melted per kilogram of molybdenum electrode, with minimal contamination of the glass melt (e.g., contamination levels in optical glass can be below 0.003%).

Other Industrial Fields

• Rare Earth Smelting: Can operate stably in fluoride molten salt environments for over 800 hours.
• High-Temperature Metallurgy: Used as heating elements in high-temperature furnaces for efficient conversion efficient conversion of electrical energy to thermal energy.
• Electronics Industry: Utilized in electron beam processing for manufacturing integrated circuits, flat panel displays, and other electronic components.
• Electrochemical Industry: Serves as anodes or cathodes in processes like electroplating and electrolysis.

📈 Product Series & Technological Evolution

To meet diverse operational conditions and evolving performance demands, various enhanced types of Molybdenum Electrodes have been developed:

• Standard Molybdenum Electrodes: The foundational series, suitable for most conventional applications.
• Molybdenum-Zirconium (Mo-Zr) Electrodes: By adding 0.5%-1.2% Zirconium Oxide (ZrO₂), these electrodes significantly enhance high-temperature strength and creep resistance, increasing the anti-sag temperature by approximately 150°C.
• Coated Electrodes: Special coatings (e.g., silicides) applied to the surface can increase the oxidation resistance temperature by 200°C, thereby extending electrode service life by 3 to 5 times.
• Composite Electrodes: Featuring a structure combining a molybdenum tip with a copper base body, achieving a 30% improvement in conductivity.