About the maintenance of vacuum tempering furnace?

With the prolongation of furnace operation time, the thermal resistance of heat shield decreases, and the electric heating element volatilizes and the resistance increases, so the power should be increased appropriately. In the practice of consumption, the experience calculation method is usually used to confirm the power, which is the relationship between the volume of graphite felt or refractory fiber felt heat shield vacuum furnace and heating power. According to the figure, 1300 can be confirmed. C vacuum furnace heating power. If it is a vacuum furnace with a metal heat shield, the heating power needed to be increased by about 30%.

Maintenance and maintenance of insulating screen of vacuum tempering furnace manufacturer plays an insulating and insulating role in vacuum furnace, and sometimes serves as the structural foundation of fixed heater. There are four types of heat shield: all-metal heat shield, sandwich heat shield, graphite felt heat shield and mixed felt heat shield. The main points of different heat shields should be controlled during maintenance.

Molybdenum and tungsten materials are usually used in the 1-2 layers near the electrothermal elements, while stainless steel materials can be used in the outer layers, and the thickness should be as thin as possible (medium-sized and small-sized furnaces are usually o.2). 0.5 mm. The large-scale furnace is o.5-1.Omm, and the heat shield should be processed into a bright state before assembling to reduce blackness and enhance reflection effect. 1300. The number of heat shield layers of C furnace is usually 5-6 layers, and the interval between layers is 5-10 mm. The contact area of several radiation plates should not be too large to reduce thermal short circuit. The heat shield should be expanded and contracted, and made into a detachable type, so as to facilitate the next maintenance.

Multi-atmosphere-vacuum-sintering-furnace-for-cemented-carbide

Vacuum-Sintering-Furnace-in-MIM-Industry

Vacuum-Heat-Treatment-Furnace-of-Metal-Parts