Twisted Tungsten Wire for Furnace
Twisted Tungsten Wire For Furnace is a core heating component specifically designed for extreme thermal environments, such as high-temperature vacuum furnaces. This product is manufactured by twisting multiple strands of high-purity tungsten wire according to specific patterns. It fully leverages the high melting point (3422°C) inherent to tungsten material, combined with the mechanical reinforcement benefits of a twisted structure, to provide a stable, uniform, and long-lasting heat source solution for industrial high-temperature applications.
- Product Introduction
Twisted Tungsten Wire For Furnace
Twisted Tungsten Wire For Furnace is a core heating component specifically designed for extreme thermal environments, such as high-temperature vacuum furnaces. This product is manufactured by twisting multiple strands of high-purity tungsten wire according to specific patterns. It fully leverages the high melting point (3422°C) inherent to tungsten material, combined with the mechanical reinforcement benefits of a twisted structure, to provide a stable, uniform, and long-lasting heat source solution for industrial high-temperature applications.
Feature
1. Possesses extreme temperature tolerance
The twisted tungsten wires used in furnaces are made from pure tungsten (W, with a purity of no less than 99.95%) or anti-collapse tungsten wires as the base material. Their melting point is as high as 3422°C, and they can work stably within a temperature range of 1000°C to 2300°C in a vacuum or inert gas environment. This characteristic far exceeds the temperature tolerance range of traditional heating materials, significantly reducing the possibility of thermal degradation in high-temperature environments.
2. Features a reinforced mechanical structure
By adopting structures such as 7×7, 19×7, or 4×19×7, this twisting process enhances tensile strength, vibration resistance, and fatigue fracture resistance through the synergy of multiple strands. This enables the wire to withstand high-temperature thermal stress and mechanical shocks caused by frequent system startups and shutdowns. The single-strand diameter of this product ranges from 0.1 millimeters to 2.0 millimeters and can be customized according to different mechanical strength and flexibility requirements.
3. Exhibits efficient thermoelectric properties
Its low resistivity improves heating efficiency, and its high thermal conductivity ensures uniform heat distribution. The low vapor pressure minimizes pollution caused by high-temperature volatilization (making it particularly suitable for high-purity processes such as crystal growth). Additionally, the material has a density of 19.2 - 19.3 grams per cubic centimeter and a boiling point of approximately 5927°C, ensuring dimensional stability even under extreme working conditions.
4. Has stable chemical properties
When operating in a vacuum environment or protected gases (such as argon, hydrogen, or nitrogen), this product has excellent corrosion resistance. However, it must be strictly prevented from exposure to high-temperature air to prevent oxidation, thereby ensuring stable performance during long-term use.
Application
1. The key heating components in vacuum furnaces
As heating elements in vacuum sintering furnaces, vacuum annealing furnaces, metal injection molding furnaces, and high-temperature experimental furnaces, our "Twisted Tungsten Wire Furnace Heating Element" can create a uniform and stable thermal field, thereby improving the processing accuracy of materials and the output of products.
2. The crystal pulling support components in single crystal furnaces
When using the Kozolarski method to grow single crystal silicon or sapphire, this product serves as a load-bearing cable, connecting the seed crystal and the growing crystal ingot. With its low volatility at high temperatures and excellent tensile strength, it ensures the purity of the crystal and the continuity of the production process.
3. Electron beam and light source components
It can be used as the cathode filament in X-ray tubes and microwave tubes (tungsten-in-rhodium tubes) to generate an electron flow; it can also be used as a high-temperature indicator light in high-end instruments to meet the strict requirements of precision electronic equipment for thermal stability and heat resistance.
4. High-temperature measurement and coating applications
As tungsten-rhenium thermocouple wires, it can precisely measure extreme temperatures up to 2300°C, suitable for environments such as aircraft engine combustion chambers. In vacuum coating equipment, it serves as an evaporation boat, used to fix metals such as aluminum and silver to achieve high-purity film deposition.
Specification
|
Parameter |
Specification |
|
Material |
High Purity Tungsten (W ≥ 99.95% / 99.99%) |
|
Structure Type |
Twisted (2 strands, 3 strands, multi-strand customizable) |
|
Single Wire Diameter |
0.01 mm – 1.0 mm |
|
Twisted Wire Diameter |
0.1 mm – 5.0 mm |
|
Length |
Customizable (coil or straight) |
|
Melting Point |
3422°C |
|
Working Temperature |
1600°C – 2800°C (depending on atmosphere) |
|
Density |
19.3 g/cm³ |
|
Electrical Resistivity |
5.6 × 10⁻⁸ Ω·m |
|
Surface Condition |
Black / Cleaned / Polished |
|
Twisting Pitch |
Customizable |
|
Tensile Strength |
≥ 800 MPa (varies by diameter & process) |
|
Elongation |
≥ 1% |
|
Thermal Conductivity |
~173 W/(m·K) |
|
Packaging |
Coil, spool, straightened rods, or customized |
|
Application Environment |
Vacuum, hydrogen, inert gas (argon, nitrogen) |
Customization Services
Beijing Funning offers comprehensive, end-to-end customization support:
1.Materials & Purity:
Choose between pure tungsten or sag-resistant tungsten wire doped with potassium, silicon, and aluminum, tailored to your specific needs to optimize high-temperature performance.
2.Specifications & Parameters
Single-wire diameter, stranded structure (e.g., 7×7 to 4×19×7), and physical form (straight, bright/polished surface) are customized
3.Application Adaptation
We provide specialized performance testing and process-matching services tailored to specific scenarios, including vacuum furnaces, single-crystal furnaces, and electron beam equipment.
4.Rapid Response
Leveraging the global supply chain network of Beijing Siyiou Network Technology Co., Ltd., we ensure the efficient and timely delivery of all custom orders.
Contact Beijing Funning today to receive expert selection advice and a quotation for our Twisted Tungsten Wire for Furnaces-let us help you elevate your high-temperature processing capabilities!
FAQ
1. What is twisted tungsten wire used for?
It is mainly used as a heating element in high-temperature furnaces such as vacuum furnaces, sintering furnaces, and metal melting systems. It is also used in semiconductor processing and vacuum coating applications.
2. Why use twisted tungsten wire instead of single tungsten wire?
Compared with single wire, twisted tungsten wire offers:
Higher mechanical strength
Better resistance to vibration
Reduced risk of breakage
More stable heating performance
This makes it more suitable for long-term industrial furnace operation.
3. What is the maximum temperature tungsten wire can withstand?
Tungsten has an extremely high melting point of 3422°C.
In practical applications, twisted tungsten wire typically operates between 1600°C and 2800°C, depending on the environment (vacuum or inert gas).
4. Can twisted tungsten wire be used in air?
No, it is not recommended for use in air at high temperatures, as tungsten oxidizes rapidly above ~500°C.
It performs best in:
Vacuum environments
Hydrogen atmospheres
Inert gases like argon
5. What purity levels are available?
Common purity options include:
99.95% tungsten (standard industrial use)
99.99% tungsten (high-end, high-purity applications such as semiconductor manufacturing)
6. Is customization available for twisted tungsten wire?
Yes, most manufacturers offer customization, including:
Wire diameter and length
Number of strands (2, 3, or multi-strand)
Surface condition
Custom designs can be tailored to specific furnace requirements.
7. How long does twisted tungsten wire last?
Service life depends on:
Operating temperature
Atmosphere (vacuum vs air exposure)
Mechanical stress
Under proper conditions, it can last significantly longer than conventional heating wires due to its high melting point and structural strength.
8. What are the advantages of tungsten over other heating materials?
Tungsten offers:
The highest melting point among metals
Excellent high-temperature strength
Low vapor pressure (ideal for vacuum use)
Stable electrical resistance
These properties make it superior to materials like nichrome in extreme environments.
9. What surface conditions are available?
Twisted tungsten wire can be supplied in different finishes:
Black (as-drawn)
Chemically cleaned
Polished
The choice depends on application requirements such as cleanliness and conductivity.
10. How do I choose the right twisted tungsten wire for my furnace?
Key factors to consider:
Working temperature range
Furnace atmosphere (vacuum, hydrogen, inert gas)
Required strength and durability
Electrical resistance and power needs
Installation structure
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