Tungsten Coil
Tungsten coil is a thin sheet material made of tungsten material, which has high melting point, high strength, high density, and good electrical and thermal conductivity. It is a special process that processes tungsten material into extremely thin sheet materials, with a thickness typically ranging from a few micrometers to tens of micrometers, and the specific thickness can be customized according to demand.
Description
Shaanxi Zhongheng Weichuang Metal Materials Co., Ltd. supplies high-quality rare metals, mainly including niobium hafnium alloy 103, tantalum, niobium, hafnium, tungsten, titanium, zirconium, nickel, vanadium, and their alloys of plates, strips, coils, rods, wires, tubes and other conventional processed profiles, as well as deep processed products such as boats, crucibles, sputtering targets, coating targets, machined parts, high-temperature furnace insulation screens, heating elements, furnace bodies (heating furnaces, annealing furnaces), and corrosion-resistant equipment.
As a Tungsten roll manufacturer and Tungsten coil supplier, our main products can achieve a purity of up to 99.99%, with "worry free quality and better prices"! Customer service is always online, making you worry free and at ease.
Specification and size
1, Thickness specification
Cold rolled tungsten coil: 0.10-1.0mm (common in the field of electronic vacuum devices)
Hot rolled tungsten coil: 1.0-4.0mm (suitable for industrial heavy-duty components)
Special requirements can be customized up to 6.0mm (requires powder metallurgy process)
2, Width and length
Standard width: 50-300mm (for most industrial applications)
Maximum width: 500mm (supported by some manufacturers)
Length range: 50-400mm (rolled sheet) or 100-600mm (special machined parts)
3, Purity and process requirements(High purity tungsten coil)
Purity standard: W1 grade (≥ 99.95% tungsten content)
Processing status: hard state (Y), stress relief state (m), hot-rolled/cold-rolled coil (R)
Density requirement: ≥ 19.2g/cm ³ when thickness ≤ 6mm
4, Typical application corresponding specifications
Electronic vacuum devices
Thin sheets (0.1-0.5mm) are used for tungsten boats and heating elements
Radiation shielding/medical
Medium thick sheets (1.0-3.0mm) require high-density materials
Aerospace components
Customized large size (width over 300mm, length 500mm+)
Focus on Purity and Density: Pure tungsten powder is essential for achieving the high density required in final products like annealed tungsten coils. Stringent chemical processing ensures minimal impurities are present before compaction and sintering.
High-Temperature Suitability: To produce components with outstanding high temperature resistance, such as high temperature resistance tungsten coil, the starting powder must exhibit consistent particle size and flow characteristics. Advanced reduction and classification techniques create powder ideal for pressing and subsequent heat treatment (annealing).
Foundation for Surface Quality: The manufacturing of polished tungsten coil, mirror polished tungsten foil coil, or cleaned tungsten coil begins with meticulously processed tungsten powder. Precise control over particle shape and size distribution during powder production is critical for achieving the flawless surface finish demanded in the final tungsten coil after rolling, heat treatment (annealing), and polishing. Both pure tungsten and specific tungsten alloy powders follow tailored process routes to meet their end-use surface finish requirements.
Application field of tungsten coil
1. High-Temperature Industrial Processing
Tungsten particle coils excel as heating elements in extreme environments. In vacuum or sintering furnaces, tightly coiled tungsten wires withstand temperatures exceeding 2000°C, enabling uniform heating for processes like metal powder sintering or crystal growth. Their high melting point and low vapor pressure prevent sagging or contamination under intense thermal cycling.
2. Semiconductor & Thin-Film Manufacturing
The semiconductor industry relies on tungsten coils for critical deposition techniques. During Physical Vapor Deposition (PVD) or sputtering, tungsten coils efficiently heat evaporation sources or serve as durable sputtering targets themselves. Their stability in high-vacuum chambers ensures precise, contamination-free thin film deposition on wafers.
3. Advanced Radiation Shielding
Tungsten's exceptional density makes coiled forms ideal for radiation management. In CT scanners, tungsten collimator coils precisely shape X-ray beams, improving image quality while minimizing patient dose. Similarly, compact tungsten radiation shield coils protect sensitive components in aerospace and defense systems from cosmic or gamma radiation.
4. Specialized Electrical & Machining Applications
Tungsten coils serve vital roles in electrical processes. As welding electrodes (especially TIG), coiled tungsten provides stable, high-current arcs. In Electrical Discharge Machining (EDM), coiled tungsten wire electrodes enable precision cutting of complex conductive parts due to their wear resistance and high melting point.
5. Thermal Management Solutions
Beyond heating, coiled tungsten acts as effective heat shields in high-temperature furnaces. Positioned strategically, these radiation shield coils reflect infrared heat inward, improving thermal efficiency and protecting furnace walls. This minimizes heat loss and enhances process control in vacuum or inert atmosphere systems.
Tungsten coils, as high-performance materials, continue to play an irreplaceable role in cutting-edge technology and industrial fields. With the breakthrough of preparation technology, its application boundaries are constantly expanding. In the future, more possibilities may be created in cutting-edge fields such as controllable nuclear fusion and quantum computing.
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