vacuum furnace graphite accessories

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First of all, what is the vacuum furnace? It is easy to understand that the industrial furnace heated by electric heating elements in the near vacuum state is called vacuum furnace. It is mainly used in ceramic firing, vacuum smelting, degassing of electric vacuum parts, annealing, brazing of metal parts, and sealing of ceramics and metals.

Vacuum furnace is a kind of heat treatment method developed with the development of precision machinery manufacturing, aerospace, national defense and other cutting-edge industries, especially in recent years, the improvement of the performance and accuracy requirements of parts makes the precise control of vacuum furnace more and more important.

Now that we are talking about the high temperature state, the accessories of vacuum furnace can only use the high temperature resistant graphite products, thus forming the graphite accessories of vacuum furnace. In fact, there are nine parts of these accessories: heat insulation carbon felt, graphite heating rod, graphite furnace guide rail, guide nozzle, graphite conducting rod, graphite connecting piece, graphite pillar, furnace bed support, graphite graphite screw, graphite Nuts and other products.

Next, let’s talk about the five advantages of the graphite parts of the vacuum furnace
1. The high temperature strength of graphite is good, and the strength of graphite is far worse than that of metal at room temperature, but with the increase of temperature, its strength will gradually increase, which will exceed all oxides and metals;

2. Graphite is easy to get and cheaper than metal

3. Graphite has some properties of metal and ceramics. It has good conductivity and thermal conductivity. It also has many voids and small coefficient of thermal expansion. Therefore, graphite becomes one of the most heat-resistant and shock resistant materials;

4. Graphite has small resistance temperature coefficient, low thermal inertia, and can be heated and cooled rapidly. There is no special requirement in the process of workpiece processing, so it is more suitable for the application of vacuum furnace heating body.

5. It is a good graphite heat generator for vacuum furnace. It has the advantages of high temperature resistance, no deformation, impact resistance, large radiation area, good flexibility and easy processing and installation. In terms of electricity, it is easy to make larger heating elements, which can increase the voltage and reduce the current. Thus, the heat loss is saved.