Vacuum furnace / Pressurized furnace

For vacuum heat treatment furnaces using both vacuuming and pressurization, and other various types of furnaces

Among the heat treatments for steel and non-ferrous materials, the “vacuum heat treatment” in a reduced-pressure atmosphere is hoped to be an effective technology in terms of quality and environment.
“Quenching” in a vacuum heat treatment furnace is a process where a material is kept to high temperature in a reduced-pressure furnace and then is rapidly cooled by the circulation of high-pressure gas.

For the introduction of rotation for the fan to circulate the pressurized gas, many magnetic seals of Rigaku have been used. The high shaft rigidity due to Rigaku’s unique magnetic seal structure enables high load resistance and high torque transmission.

Example of production of a magnetic seal for high pressure application

Rigaku magnetic seals have been used in vacuum heat treatment furnaces, sintering furnaces, carburizing furnaces, nitriding furnaces and other industrial furnaces for various applications.
The drawing below shows an example of magnetic seal produced to withstand the pressurization up to 0.9MPa.

Notes for applying the seals to high pressure furnaces

Magnetic seals for high pressure application are special order products.
Please tell us the pressure used for pressurization, operating environment, operating temperature range, load conditions, etc. from the inquiry form.