A vacuum furnace is a type of furnace in which the product in the furnace is surrounded by a vacuum during processing. The absence of air or other gases prevents oxidation, heat loss from the product through convection, and removes a source of contamination. There is merit such as being able to perform the de-foaming process and to prevent uneven heating etc. Distortion of work pieces can be suppressed. Vacuum furnaces are used to carry out processes such as annealing, brazing, sintering and heat treatment with high consistency and low contamination.
Since heating is performed while pulling with a vacuum pump, it is possible to remove the gas adhering to the processed product itself. Our magnetic fluid feedthrough is applied to the rotation introduction part of the fan for circulating the pressurized gas. Magnetic fluid seal designed by our proprietary analytical technology enables high load resistance and high torque transmission.