Intoduction

The vacuum graphite furnace developed by Brother Furnace is an advanced high-temperature heat treatment system, independently designed based on the integration of international technologies in temperature measurement, control, intelligent automation, and furnace chamber design. It features a high-purity graphite chamber and heating elements, offering exceptional thermal conductivity, stability, and high-temperature resistance. This furnace is suitable for processes such as vacuum brazing, sintering, annealing, and carbonization under vacuum or controlled atmosphere environments, and is widely used in the precision manufacturing of metals, ceramics, and composite materials.

Features of the Vacuum Graphite Furnace

• Graphite heating elements enable a maximum operating temperature of up to 2400°C.
• The thermal insulation system consists of a composite carbon fiber chamber made from imported graphite soft felt and rigid felt.
• The inner layer of the furnace shell is made of polished stainless steel, while the outer layer is carbon steel, forming a dual-layer water-cooled structure.
• The human-machine interface features a high-definition touchscreen equipped with a proprietary operating system developed by our company.
• Integrated PLC-based automatic control system.
• Advanced front-and-rear door design allows for convenient loading and unloading of workpieces.
• Observation windows are installed on the furnace shell to facilitate monitoring of the heating process inside the chamber.
• Temperature is measured using a combination of tungsten-rhenium thermocouples and an infrared pyrometer. The tungsten-rhenium thermocouple can be automatically retracted.

Optional Accessories:

• Chiller
• Graphite Crucible

Advantages of Graphite Furnace Chambers

• Excellent High-Temperature Resistance: Graphite can operate stably at around 2200°C in vacuum or inert atmospheres, with certain models reaching up to 2400°C.
• High Thermal Conductivity: Graphite ensures uniform temperature distribution within the furnace chamber, minimizing thermal stress and product deformation.
• Low Coefficient of Thermal Expansion: Minimal deformation during heating and cooling cycles makes it ideal for repeated high-temperature processing.
• Cost-Effective: Compared to refractory metals such as molybdenum and tungsten, graphite offers a better cost-performance ratio and lower maintenance costs.
• Easy Machinability and Flexible Design: Graphite components can be precisely machined into various heater and hot zone configurations, supporting customized solutions.

Applicable Processes and Industries

• Vacuum Brazing: Suitable for brazing metal components such as copper, stainless steel, titanium, and nickel alloys, achieving strong joints with oxidation-free surfaces.
• Powder Metallurgy Sintering: Ideal for high-temperature densification of materials such as hard alloys, cermets, and tungsten-molybdenum products.
• High-Temperature Heat Treatment: Processes like annealing, degassing, and homogenization enhance material performance and microstructural stability.
• Ceramic Sintering: High-temperature forming of advanced ceramics including oxides, nitrides, and carbides.
• Graphite Material Processing: Used in the pyrolysis, high-temperature treatment, and carbonization of carbon-based composite materials.

Technical Parameters