A vacuum furnace is a type of furnace that surrounds the material being processed with a vacuum. This prevents oxidation, heat loss through convection, and contamination. The furnace can heat materials like metals and ceramics to high temperatures up to 3,000 °C with select materials. The vacuum level and maximum furnace temperature depend on the melting points and vapor pressures of the heated materials. Vacuum furnaces are used for processes like annealing, brazing, sintering, and heat treatment. The process can be computer-controlled, ensuring repeatability, and the product is low in contamination and high in purity.
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vacuum furnace
Vacuum induction melting furnace Arc Melting Furnace
Item Number : KT-VI
Mesh belt controlled atmosphere furnace
Item Number : KT-MB
1200℃ Controlled atmosphere furnace
Item Number : KT-12A
Item Number : KT-BF
9MPa air pressure sintering furnace
Item Number : KT-APS
Small vacuum tungsten wire sintering furnace
Item Number : KT-VTW
Vacuum molybdenum wire sintering furnace
Item Number : KT-VMW
Vacuum pressure sintering furnace
Item Number : KT-VPS
Vertical high temperature graphitization furnace
Item Number : GF-05
Item Number : KT-VTP
Vacuum dental porcelain sintering furnace
Item Number : KT-DV10
Item Number : KT-16AH
1400℃ Controlled atmosphere furnace
Item Number : KT-14A
Vacuum furnace with ceramic fiber liner
Item Number : KT-VF
Vacuum sealed continuous working rotary tube furnace
Item Number : KT-CRTF
Item Number : KT-VHP
Vacuum arc furnace Induction melting furnace
Item Number : KT-VA
2200 ℃ Tungsten vacuum furnace
Item Number : KT-VT
2200 ℃ Graphite Vacuum furnace
Item Number : KT-VG
Item Number : KT-VM
Item Number : KT-17M
Item Number : KT-12M
Item Number : KT-14M
Item Number : KT-18M
We have the best Vacuum Furnace solutions for your unique requirements. Our custom vacuum furnaces are engineered to meet almost any customer requirement. We offer a range of shapes and sizes, multiple hot zone options, and manual or automatic flow controls. Our extensive portfolio virtually guarantees there is an appropriate standard solution that will meet your needs. We build vacuum furnaces operating at pressures as low as 10-11 Torr (mBar) with an operating range from room temperature to a maximum temperature of 3000 °C (5432°F) for our tungsten hot zones and 2200 °C (3992°F) for our graphite hot zones in a rough vacuum level (10-2 Torr/mbar).
Applications of Vacuum Furnace
- Annealing
- Brazing
- Sintering
- Heat treatment
- Hardening
- Tempering
- Aging
- Nitriding
- Carburizing
- Quenching
Advantages of Vacuum Furnace
- Allows heating of metals to high temperatures with minimal contamination problems due to the absence of oxygen.
- Provides uniform high temperatures and precise temperature control for producing high-quality materials with consistent properties.
- Low contamination from carbon, oxygen, and other gases due to the vacuum atmosphere.
- Quick quenching or cooling of the product is possible to shorten process cycle times.
- Computer-controlled to ensure repeatable performance for consistent quality output.
- Can heat materials up to temperatures as high as 3,000 °C (5,432 °F) with select materials.
- Commercially available vacuum pumping systems can reach vacuum levels as low as 1×10−11 torrs (1.3×10−11 mbar; 1.3×10−14 atm).
- Vacuum pumping systems remove low temperature by-products from the process materials during heating, resulting in a higher purity end product.
- Used for a wide range of industrial processes, such as heat treatment, sintering, brazing, and annealing.
- Typically made of refractory materials, such as graphite or ceramic, that can withstand the extreme temperatures and vacuum environment.
Our Vacuum Furnace is the perfect solution for your unique projects. Our extensive product line provides a standard solution to fit your needs. However, for more unconventional applications, our custom design service comes in handy. Our custom vacuum furnaces are engineered for your specific project, no matter how unconventional it may be. These furnaces are designed for multiple processes, available in vertical or horizontal loading, and come in a range of shapes and sizes. In addition, we offer automatic flow controls and multiple hot zone options. The best part? Our Vacuum Furnace is very advantageous in terms of price and offers a complete customisation service.
FAQ
What is a vacuum furnace used for?
A vacuum furnace is used for high-temperature processing of materials in a controlled environment without any contamination. It operates by surrounding the product with a vacuum, which prevents oxidation and heat loss from the product through convection. This furnace is commonly used for heat treatment of steel alloys at temperatures below 1200 °C. High-temperature vacuum furnaces can reach temperatures up to 3000°C and are used for industrial processes such as sintering, brazing, annealing, and heat treatment with high consistency and low contamination. The ability to achieve uniform heating across the entire workpiece is a key benefit of using a high-temperature vacuum furnace.
What is the process of a vacuum furnace?
The process of a vacuum furnace involves loading the parts into the chamber and creating a vacuum inside it by utilizing a vacuum pump. The next step is to heat the parts using temperature controls, which can reach between 1,500 and 5,400 degrees Fahrenheit. This process eliminates the possibility of oxidation and contamination, resulting in a higher purity end product. After heating, the parts are cooled and finished before being removed from the vacuum furnace. The furnace consists of various components, including the vacuum system, furnace shell, electric heating element, temperature controls, power supply system, and transport apparatus.
What gas is used in a vacuum furnace?
Different gases can be used in a vacuum furnace depending on the application. In general, vacuum furnaces can work with gases or mixtures such as Argon, Nitrogen, Hydrogen, Carbon Monoxide, Helium, among others. The use of these gases allows for heat treatment in a defined, mostly non-oxidizing atmosphere, which is required for various applications such as vacuum soldering and brazing, vacuum annealing, and sintering. Additionally, it is possible to work with a defined oxygen concentration that is different from the air composition.
What is the heating element used in a vacuum furnace?
The heating element in a vacuum furnace is critical to its proper functioning, and is dependent on factors such as maximum operating temperature, power load, partial pressure and quench gases, and life expectancy. Vacuum furnaces are heated by electric resistance elements made from a variety of materials, including high-temperature metallic alloys such as stainless steel, nickel-chromium, molybdenum, tungsten, tantalum, or of non-metallic materials such as graphite and silicon carbide. The choice of material for the heating element is important in maximizing its longevity, reliability, efficiency, and ultimately the process results.
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