vacuum heat treatment furnace main use of heat insulation layer

First, the heat insulation layer of the vacuum heat treatment furnace is one of the important components of the vacuum heat treatment furnace heating chamber, in general, the heat insulation layer is as far as possible to make cylindrical, because, from the perspective of heat transfer, cylindrical structure, its heat transfer effect is better, heat loss is very small.

Second, the interior dimensions of vacuum heat treatment furnace heat insulation layer is the size of the chamber of a stove or furnace, this size is according to the shape and size of processed workpiece and furnace production points to decide, and you also need to consider the effect of vacuum heat treatment furnace heating, the uniformity of furnace temperature and convenient maintenance and discharging operation, etc.

Third, the distance between the inner surface of the heat insulation layer of the vacuum heat treatment furnace and the heater is about 50 to 100 mm, the distance between the heater and the workpiece, fixture or basket should be about 50 to 150 mm.

Fourth, the temperature of the heat insulation layer of the vacuum heat treatment furnace is relatively low near the furnace door and at both ends of the rear wall, so the distance between the workpiece and the two ends needs to be set aside 150 to 250 mm. The selection of material and thickness of heat insulation layer of vacuum heat treatment furnace is generally determined by the vacuum degree and operating temperature of the furnace.

Fifth, the heat insulation layer of vacuum heat treatment furnace it is the place where the workpiece is heated, mainly used for heat insulation, heat preservation, construction of heat loss, in some cases, the heat insulation layer of vacuum heat treatment furnace is also the structural basis of fixed heating elements. The heat insulation layer of vacuum heat treatment furnace can be roughly divided into five types according to the selected materials and different structural forms: refractory furnace lining, sandwich type heat insulation layer, all metal anti-radiation screen, mixed blanket heat insulation layer and graphite blanket heat insulation layer.