Internal heat vacuum heat treatment furnace

The internal heat vacuum heat treatment furnace is a furnace that places the whole heating device (heating elements, refractory materials) and the pre-treatment workpiece in the vacuum vessel instead of the furnace.

The advantages of internal heat vacuum heat treatment furnace are as follows:
1. It can be used to manufacture large-scale high-temperature furnaces, but not limited by furnaces.
2. Fast heating and cooling speed, high production efficiency.

The disadvantages of internal heat vacuum heat treatment furnace are as follows:
1. The structure of the furnace is complex and the requirement of electrical insulation is high.
2. Compared with the external heating vacuum furnace, the furnace has a large volume of contents, and a large number of gases are adsorbed on the surface of various components, so it needs to be equipped with a high-power extraction system.
3. Considering the vacuum discharge and electrical insulation, it is necessary to supply power with low voltage and high current.

Modern vacuum resistance furnace heat treatment furnace is internal heat type, without furnace tank, the whole furnace shell is a vacuum vessel, the shell is sealed, some parts are cooled with water. According to its shape and structure, it can be divided into vertical, horizontal, single room and three rooms.