The Vacuum Tungsten Wire Furnace is a sophisticated piece of equipment designed for use in laboratories conducting material research, particularly in the study of the properties of tungsten and related compounds. This furnace is equipped with advanced technology that allows for precise control over temperature and atmosphere, creating the ideal conditions for experiments and analysis.
Key features of the Vacuum Tungsten Wire Furnace include a vacuum chamber that ensures a clean and controlled environment, preventing contamination and interference with research results. The furnace is also equipped with a high-quality tungsten wire heating element that provides uniform heating and reliable performance.
Researchers and scientists can rely on the Vacuum Tungsten Wire Furnace to deliver accurate and consistent results, making it an essential tool for studies involving tungsten and its compounds. Its durable construction and user-friendly interface make it easy to operate and maintain, ensuring long-lasting performance and reliability.
Overall, the Vacuum Tungsten Wire Furnace is a valuable asset for any laboratory engaged in material research, offering precise control, reliable performance, and exceptional results for studies involving tungsten and related compounds.
The Vacuum Tungsten Wire Furnace is a device used for heating and processing materials in a vacuum environment, particularly suitable for high-temperature treatment of tungsten and its alloys. The furnace utilizes resistance heating principles, employing tungsten wire as the heating element to achieve efficient and uniform heating.
Product Features：
High Temperature Capability: Can reach temperatures exceeding 3000°C, suitable for sintering, melting, and heat treatment of tungsten and its alloys.
Vacuum Operation: Operates in a vacuum or inert gas atmosphere, effectively reducing oxidation and contamination, ensuring high purity of materials.
High Efficiency: Tungsten wire heating offers excellent thermal conductivity, enabling rapid heating and cooling, thus improving energy efficiency.
Precise Control: Temperature and heating processes can be precisely controlled to meet the processing needs of different materials.
Durability: Tungsten wire is resistant to high temperatures and corrosion, providing a longer service life.
Purchase Information：
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Technical Parameters：
Product Name | Vacuum Tungsten Wire Furnace |
Model | CY-VF-WH |
Capacity | Options from 500g to 5kg |
Furnace Structure | Carbon steel shell, double-layer structure |
Heating Element | High-temperature tungsten ribbon |
Working Temperature | Max. 3000°C; continuous working temperature ≤ 2800°C |
Heating Rate | ≤20°C/min, recommended at 10°C/min |
Precision | ±1℃ |
Thermocouple | IR |
Temperature Uniformity | ±5℃ |
Control Method | Screen control (stores 16 temperature curves), 16-segment programmable controller, PID automatic controller, thermocouple disconnection protection, and over-temperature automatic protection alarm |
Atmospheric Control | Fine-tuning valve for gas intake, capable of introducing inert gases like Ar or N2 according to process requirements |
Vacuum System | Low vacuum: Dual-stage rotary vane vacuum pump, 3Pa High vacuum: Mechanical pump + diffusion pump/molecular pump, -3Pa |
Cooling System | Water Chiller |
Power Supply Voltage | Single-phase 220V, 50/60Hz; three-phase 380V, 50/60Hz |
Main Components:
Component Name | Description |
Main Unit | Set process parameters, where physical changes of the sample occur |
Vacuum System | Chamber obtains vacuum |
Gas Control System | For filling with inert gases |
Water Chiller | For cooling the chamber |
Accessories | Gloves, hex keys, heating rods, pliers |
User Manual | Standard configuration |
Application Fields：
Aerospace: Used for processing high-temperature alloys and aerospace components to meet high-performance and extreme environment requirements.
Electronics Industry: Ensures material quality and performance in the production of semiconductors and optoelectronic materials.
Metal Smelting: Used for melting and processing tungsten and other high-melting-point metals.
Powder Metallurgy: Suitable for sintering tungsten powders, producing high-performance composite materials.
High-Temperature Materials Research: Employed in the development of new high-temperature materials and technologies.
Application Case: "Preparation of Sodium Tungstate (Na₂WO₄) Using Tungsten Wire Vacuum Tungsten Wire Furnace"
Process Steps:
1. Raw Material Preparation:
Prepare high-purity tungsten acid (H₂WO₄) and sodium hydroxide (NaOH).
2. Mixing:
Mix tungsten acid and sodium hydroxide in a certain ratio, usually at a molar ratio of 1:2, to ensure complete reaction.
3. Loading the Furnace:
Place the mixed raw materials into a high-temperature resistant crucible, ensuring uniform distribution.
4. Vacuum Pumping:
Start the vacuum pump to evacuate air from the furnace to below 10⁻³ mbar, removing impurities.
5. Atmospheric Control:
Introduce inert gas (such as argon) to avoid oxidation reactions at high temperatures.
6. Heating:
Activate the tungsten wire heating element and slowly raise the temperature to the desired reaction temperature (approximately 600°C to 800°C).
7. Maintaining Temperature:
Maintain the reaction temperature for a certain period (usually 2 to 4 hours) to ensure that tungsten acid and sodium hydroxide react fully to produce sodium tungstate.
8. Cooling:
Turn off the heating system and allow the furnace temperature to cool slowly to room temperature, avoiding cracks due to rapid cooling.
9. Product Extraction:
Open the furnace door at a safe temperature and remove the crucible to obtain the produced sodium tungstate.
10. Post-Processing:
Perform necessary washing and drying of the sodium tungstate to remove unreacted raw materials and impurities.
Precautions:
Maintain the concentration of inert gas during the reaction to prevent oxidation.
Control the rates of heating and cooling to minimize thermal stress on the crucible and product.
Ensure the high purity of raw materials to obtain high-quality sodium tungstate.
Common Issues During the Use of Vacuum Tungsten Wire Furnace
Oxidation or Contamination:
Materials may still be affected by trace oxygen, leading to oxidation even in a vacuum state.
Temperature Non-Uniformity:
Uneven temperature distribution inside the furnace may cause uneven sintering or damage to materials.
Vacuum Leaks:
Vacuum systems may develop leaks, affecting atmospheric stability and processing effectiveness.
Cracking of Samples:
Rapid heating or cooling may lead to thermal shock and cracking.
Improper Atmospheric Control:
Insufficient concentration of inert gas in the atmosphere may impact sintering quality.
Precautions During the Use of Vacuum Tungsten Wire Furnace
Atmosphere Monitoring:
Regularly check the atmosphere and vacuum levels in the furnace to ensure stability.
Heating and Cooling Rates:
Control the rates of heating and cooling, generally recommended to change slowly to reduce thermal stress.
Material Selection:
Ensure that the materials used are suitable for high-temperature and vacuum environments to avoid incompatible chemical reactions.
Regular Maintenance:
Periodically inspect and maintain the furnace body, vacuum system, and heating elements to ensure normal operation.
Safety Protection:
Wear appropriate personal protective equipment during operation to ensure safety.
By focusing on these common issues and precautions, the efficiency of the Vacuum Tungsten Wire Furnace and the quality of material processing can be improved.
