Description
Pure molybdenum rod is a rod-shaped product made of high-purity molybdenum as the base material, which has the characteristics of high melting point, excellent thermal conductivity, low thermal expansion coefficient, and good corrosion resistance. The following is a detailed introduction about pure molybdenum rods:
1, Core characteristics and basic parameters
🔹Purity
Usually ≥ 99%, some products can reach 99.99%.
🔹 Physical properties:
Melting point: about 2623 ℃, suitable for extreme high temperature environments.
Thermal conductivity: high thermal conductivity, suitable for high-temperature heat dissipation components.
Thermal expansion coefficient: Low thermal expansion performance, ensuring dimensional stability at high temperatures.
🔹Specification range:
Shape: circular, rectangular, square, hexagonal.
Section size: 1~350mm.
Length: 30~6000mm .
2, Classification and processing technology
✔ Classified by material:
Pure molybdenum rod: molybdenum content>99.95%, without doping elements.
Compared to other types, high-temperature molybdenum rods (doped with elements such as lanthanum or titanium zirconium) are used for higher temperature or strength requirements scenarios.
✔ Classified by surface condition:
Sintered molybdenum rod: silver gray metallic luster, not machined.
Forged molybdenum rod: The surface oxide layer is black and has been subjected to hanging forging treatment.
Car gloss/polished molybdenum rod: smooth surface, high dimensional accuracy, silver gray luster [^ 3 ^].
✔Production process:
Raw material preparation (molybdenite MoS ₂) → forming → sintering → forging → machining → vacuum annealing (optional).
3, Application scenarios
🔹 High temperature industrial field:
Heating element: glass melting furnace electrode, rare earth smelting stirring rod (resistant to glass melt corrosion above 1300 ℃).
Structural components: vacuum furnace screws, high-temperature furnace support components.
🔹 In the field of electronics and optoelectronics:
Electric vacuum devices: electronic tubes, electric light source leads, and brackets.
Semiconductor equipment: ion implantation parts, optical coating evaporation boat.
🔹 Special purpose:
Medical and chemical: corrosion-resistant electrodes, high-temperature reactor components.
Aerospace: Thermal protection system components (utilizing their high melting point and thermal shock resistance).
4, Storage, transportation and packaging
✔Packaging requirements:
PE pearl cotton should be wrapped separately, and shock-absorbing materials should be filled in wooden boxes during transportation to avoid mechanical vibration damage to the surface.
✔Storage conditions:
Avoid humid environments as prolonged exposure to air may oxidize the surface.
Overall, pure molybdenum rods have become an indispensable basic material in high-temperature industries, electronics, and optoelectronics due to their high performance parameters. If specific procurement or customization is required, it is recommended to prioritize products with a purity of ≥ 99.95% and choose surface treatment processes based on the application scenario (such as polished state for precision components).
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