I. Product Overview
Tungsten and molybdenum heat insulation screens and heating elements are core components of vacuum high-temperature furnaces, specifically designed for extreme high temperatures (1800°C to 2800°C), high vacuum or inert gas environments. Made from high-purity tungsten (W) and molybdenum (Mo) materials through precise processing techniques, they feature excellent high-temperature stability, thermal shock resistance, and low vapor pressure, and are widely used in high-end material heat treatment, semiconductor manufacturing, aerospace, and other fields.
II. Technical Parameters
1. Tungsten and Molybdenum Insulation Screen
Material Composition: W (purity ≥ 99.95%), Mo (purity ≥ 99.9%). Customizable laminated or composite structures are available.
Working temperature: ≤ 2200℃ (long-term stable), short-term peak can reach up to 2500℃.
Density: ≥18.5 g/cm³ (tungsten layer), ≥10.2 g/cm³ (molybdenum layer).
Thermal conductivity: Low heat conduction design effectively reduces heat loss (measured thermal efficiency increase ≥ 30%).
Specification: Customization is supported. Common sizes range from Φ200mm to Φ1500mm, and thicknesses range from 0.5mm to 3mm.
2. Tungsten-molybdenum heating element
Material composition: W/Mo alloy or pure tungsten wire (optional), surface roughness Ra ≤ 0.8 μm.
Working temperature: ≤ 2800℃ (in vacuum environment), resistance stability deviation ≤ ± 2%.
Resistance value: Customizable (conventional range: 0.1 - 10Ω).
Service life: ≥ 2000 hours (under 1800℃ conditions), with excellent resistance to deformation and creep.
Structural forms: spiral wire, U-shaped rods, mesh structures, etc., suitable for vertical/horizontal furnace types.
III. Core Advantages
Super-high Temperature Performance: Tungsten and molybdenum materials have high melting points (W: 3422℃, Mo: 2623℃), with no risk of softening or deformation.
Energy-saving and highly efficient: The multi-layer reflective design of the heat insulation screen reduces heat loss; the heating element heats up quickly, with a temperature control accuracy of ±5℃.
Long-life design: An optional anti-oxidation coating extends the service life of components and reduces customers' maintenance costs.
Customized services: Support for non-standard sizes, irregular structures, and special connection methods, compatible with various vacuum furnace models.
This molybdenum heat shielding is for our Korea customer. It is a full inner furnace set, including molybdenum heat shielding, tungsten heater, molybdenum hook, molybdenum support rod, and molybdenum base plate.
The customer is very satisfied with out hot zone parts. Though the heat shielding and heater dimension are small, the order frenqucy is not so often, we treat all informations carefully, and every time customer looks for us. this is the forth order.
If you have any enquiry, feel free to contact with us please.