Product Introduction

This series of vacuum tungsten wire furnace is a vertical vacuum high-temperature equipment that deeply integrates vacuum environment and ultra-high temperature sintering technology. It uses high-purity tungsten wire mesh as the heating element, combined with a multi-layer tungsten-molybdenum metal reflection screen insulation structure. The interior is carbon-free, fundamentally eliminating carbon contamination issues. The furnace body adopts a double-layer stainless steel water-cooled structure with mirror polishing, and the ultimate vacuum can reach10⁻⁴ Palevel (maximum molecular pump can be configured up to10⁻⁵ ~ 10⁻⁶ Pa), the maximum working temperature can reach2300 ~ 2400℃. The equipment integrates vacuum, atmosphere protection, and high-temperature sintering. It has a reasonable structure, safe operation, and precise temperature control. It is widely used in high-temperature vacuum sintering processes for new materials such as powder metallurgy, functional ceramics, transparent ceramics, and refractory metal alloys. It is the preferred equipment for laboratory high-end material research and development and small-batch production in enterprises.

Technical Features

Ultra-High Temperature and High Vacuum: The maximum temperature can reach2300 ~ 2400℃, the ultimate vacuum can reach≤6.67×10⁻⁴ Pa(empty furnace, cold state). A molecular pump can be optionally configured to increase the vacuum to6×10⁻⁵ Pa ~ 5×10⁻⁶ Pa, meeting the requirements of ultra-high vacuum sintering.

Carbon-Free Pure Heating: Heating elements use high-purity tungsten wire/tungsten mesh, the interior is carbon-free, completely avoiding the common carbon volatilization and carburization contamination problems of graphite furnaces, especially suitable for sintering high-purity ceramics and transparent ceramics.

Heating efficiency and temperature uniformity: Three-phase tungsten cage mesh heating element structure, large heating area, temperature uniformity up to ±3 ~ 5℃(1200℃or higher); combined with multi-zone independent temperature control design, it effectively ensures the uniformity of the temperature field in the working area.

Multi-layer Metal Insulation Screen: The insulation system adopts a multi-layer metal reflective screen structure, which is composed of multi-layer high-purity tungsten screens, multi-layer high-purity molybdenum screens, and multi-layer stainless steel screens from inside to outside. The heat loss is extremely small, the heating rate is fast, and it is energy-saving compared to traditional graphite furnaces30%or higher.

Double-layer Water-cooled Structure: The furnace body adopts a double-layer stainless steel water-cooled structure, with the outer wall mirror polished. The cooling circulation system effectively ensures that the equipment shell temperature is ≤40 ~ 60℃, safe and reliable.

IntelligentPIDTemperature Control: Equipped with imported temperature control instruments (such as Eurotherm3204/3504) orPLC + Touch screen control system, temperature control accuracy±1℃, featuring multi-segment program temperature control, self-tuning, over-temperature/Thermocouple break/Overcurrent/Water Pressure Interlock Alarm Protection and other functions.

Multi-functional Process Environment: Supports vacuum sintering and atmosphere protection sintering (can be filled with nitrogen, argon, hydrogen, nitrogen-hydrogen mixed gas, etc.). Gas filling pressure ≤0.05 MPa, flexibly adapting to different material processes.

Note: Various experimental furnaces and industrial furnaces can be customized according to customer's actual working conditions.

Application Fields

Transparent Ceramic Sintering:YAGDensification and sintering of transparent ceramics, alumina transparent ceramics, magnesium-aluminum spinel transparent ceramics, etc. under ultra-high vacuum to obtain high light transmittance and excellent mechanical properties.

Vacuum Sintering of Refractory Metals and Alloys: High-temperature vacuum sintering, annealing, and degassing of tungsten, molybdenum, tantalum, titanium, zirconium, and their alloys, as well as densification sintering of tungsten-molybdenum products.

Functional ceramics and inorganic non-metallic materials: high-temperature sintering and densification of Zirconia, Aluminum Nitride, Silicon Carbide, Silicon Nitride, etc. under vacuum or protective atmosphere.

Advanced Powder Metallurgy: Vacuum densification and sintering of powder materials such as tungsten powder, molybdenum powder, cemented carbide powder, carbides, and nitrides to improve density and mechanical strength.

Semiconductor and Optical Materials: Annealing of sapphire glass, heat treatment of silicon and compound semiconductor materials, crystal growth, etc.

Research institutes and university laboratories: new material development, process verification, teaching demonstrations, and pilot-scale production.

Advantages

Ultra-high Temperature Pure Environment: Tungsten mesh heating combined with carbon-free design meets2000℃ and above ultra-high temperature processing requirements, while eliminating carbon contamination and ensuring the sintering quality of high-purity materials.

High Vacuum and High Purity: Ultimate vacuum reaches10⁻⁴ Palevel, effectively preventing material oxidation and thorough degassing, especially suitable for precision material processing with extremely high cleanliness requirements.

Excellent temperature field uniformity: Three-dimensional surround tungsten mesh heating structure with multi-layer metal reflection screen, temperature difference control within ±3 ~ 5℃, greatly improving the consistency of sample sintering.

Energy Saving and Consumption Reduction: High energy utilization rate of metal reflective screen structure, low heat loss, energy saving compared to traditional graphite furnaces30%and above, with lower operating costs.

Intelligent Control and Multiple Safety Protections:PLC + Touch screen control system, supports one-key full-process automatic operation, and has multiple protection measures such as over-temperature alarm, broken thermocouple protection, overcurrent protection, and water pressure monitoring to ensure safe and stable equipment operation.

Compact and Easy to Maintain: The furnace adopts a vertical structure, occupying a small footprint. The double-layer water-cooled design enhances equipment durability and lifespan. The bottom lifting loading mechanism makes sample loading and unloading more convenient and efficient.

Flexible Functionality and Strong Scalability: Molecular pumps, rapid cooling systems, and multi-channel mass flow meters (MFC) gas mixing control system, etc., with strong scalability, suitable for various process scenarios from basic research to pilot production.