vacuum furnace structure and application
Vacuum furnace structure:
The vacuum furnace is generally composed of the main engine, furnace, electric heating device, sealed furnace shell, vacuum system, power supply system, temperature control system and external transport vehicle. The sealing furnace shell is welded with carbon steel or stainless steel, and the joint surface of detachable parts is sealed with vacuum sealing material.
In order to prevent the shell from deforming and the sealing material from deteriorating after heating, the shell is usually cooled by water or air cooling. The furnace is located in the sealed furnace shell. According to the purpose of the furnace, different types of heating elements are installed in the furnace, such as resistance, induction coil, electrode, electron gun, etc. The furnace of the vacuum furnace for smelting metal is equipped with crucible, some with automatic pouring device and manipulator for loading and unloading. The vacuum system is mainly composed of vacuum pump, vacuum valve and vacuum gauge.
vacuum furnace application:
The vacuum furnace uses the vacuum system (which is composed of vacuum pump, vacuum measuring device, vacuum valve and other components) to discharge some substances in the furnace cavity in the specific space of the furnace cavity, so that the pressure in the furnace cavity is less than a standard atmospheric pressure, and the space in the furnace cavity can realize the vacuum state. So, what is the application of vacuum furnace in heat treatment?
The vacuum furnace is not only used for quenching, tempering, annealing and normalizing of ordinary workpieces, but also for chemical heat treatment such as vacuum carburizing (including vacuum carbonitriding), vacuum ion carburizing and glow ion nitriding, etc. at the same time, it can complete the sintering, brazing and vacuum coating of metals, etc. vacuum carburizing has the advantages of uniform carburizing layer, good reproducibility, clean and bright surface, less gas consumption, and saving Gas source and other advantages.