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Ask for a free consultation Ask for technical supportA tube furnace can be evacuated, but a specialized vacuum system is required. Usually, the tube furnace itself does not have a vacuum function, but vacuum can be extracted through accessories such as a vacuum pump.
Three temperature zone tube furnace with vacuum pump (click on the picture to view product details)
The purpose of vacuuming:
The main purpose of vacuuming during the use of a tube furnace is to eliminate oxygen and ensure that the experimental material does not exhibit oxidation-reduction phenomena. At the same time, for some experiments that need to be conducted in a vacuum environment, vacuum pumping operations also meet these special requirements.
Tube furnace vacuum configuration:
Vacuum pump: connected to one end of the tube furnace, used to extract air from the furnace and create a vacuum environment. Commonly used vacuum pumps include rotary vane pumps, molecular pumps, etc.
Sealing system: Install sealing flanges and rings at both ends of the tubular furnace to ensure isolation from the outside and prevent air from entering the furnace.
Vacuum gauge: monitors the vacuum level inside the furnace to ensure the desired vacuum level is achieved.
Air intake system: Some experiments may require the introduction of specific gases, such as nitrogen, argon, etc., in a vacuum environment. The intake system needs to be compatible with the vacuum system, capable of accurately controlling gas flow while maintaining vacuum.
Vacuum rotary inclined tube furnace (click on the picture to view product details)
The operation steps for vacuuming:
Firstly, connect the tube furnace to a vacuum pump and nitrogen cylinder (or other inert gas cylinder), and close all valves.
Open the vacuum pump and vacuum valve, observe the pressure gauge, wait for the vacuum degree of the vacuum pump to stabilize, then close the vacuum valve and vacuum pump.
Open the gas cylinder and open the intake valve. After the pressure gauge returns to normal pressure, close the intake valve. At this point, the air concentration inside the furnace decreases, but there is still residue. To obtain a higher purity inert gas to eliminate air, the above steps can be repeated.
If a higher purity experimental environment is required, it can be achieved by repeating the above steps multiple times.
Notes:
Pay attention to the sequence of opening and closing pump valves and gas cylinders to ensure correct operation.
After vacuuming, the vacuum valve should be closed first, and then the vacuum pump should be turned off to prevent air from flowing back into the furnace tube.
In addition, tube furnaces have a wide range of applications, including metal processing and heat treatment, powder metallurgy, material preparation and research, ceramics industry, metallurgy industry, electronic device manufacturing, chemical and glass industry, chemical reactions and catalyst preparation, materials science field, electronics industry, and biopharmaceutical preparation. In these fields, the vacuum pumping function of tube furnaces provides favorable conditions for various process processes.
Customized two furnace vacuum tube furnace (click on the image to view product details)
After achieving these conditions, the tube furnace can be used for experiments in vacuum or low-pressure environments, which is important for the treatment and experimentation of materials sensitive to air.Click to learn more tube furnaces! Or click on online customer service to learn more about product information!
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