Material

Aluminum Shell/Steel Shell/Copper

Type

Vacuum quenching furnace, vacuum brazing furnace, vacuum annealing furnace, vacuum magnetizing furnace, vacuum tempering furnace, vacuum sintering furnace, vacuum diffusion welding furnace, vacuum carburizing furnace, etc.
       Vacuum furnaces are divided into vacuum resistance furnaces, vacuum induction furnaces, vacuum arc furnaces, vacuum consumable arc furnaces, electron beam furnaces (also known as electron bombardment furnaces) and plasma furnaces.

Component

Vacuum furnace is generally composed of main engine, furnace, electric heating device, sealed furnace shell, vacuum system, power supply system, temperature control system and outside conveyor. Sealing furnace shell is welded with carbon steel or stainless steel, and the joint surface of removable parts is sealed with vacuum sealing material. In order to prevent the shell from deforming and sealing material from deteriorating after heating, the shell is usually cooled by water or gas. The furnace is located in the sealed shell. According to the use of the furnace, there are different types of heating elements in the furnace, such as resistance, induction coil, electrodes and electronic guns. The vacuum furnace for smelting metals is equipped with crucibles, and some are equipped with automatic pouring devices and manipulators for loading and unloading materials. The vacuum system is mainly composed of vacuum pump, vacuum valve and vacuum meter.

Advantage

1) The oxidation and decarbonization of the workpiece surface during heating are completely eliminated, and the clean surface without deterioration layer can be obtained. This is of great importance to the improvement of the cutting performance of tools that only grind one side when grinding (such as twist drill grinding which directly exposes the decarburized layer on the groove surface to the edge).
       2) It does not pollute the environment and does not need to dispose of three wastes.
       3) The accuracy of furnace temperature measurement and monitoring has been greatly improved. The indication value of the thermocouple and the furnace temperature are up to 1.5 C. However, the temperature difference in different parts of a large number of workpieces in the furnace is large. If the forced circulation of rarefied gas is adopted, the temperature difference can still be controlled within the range of (+5) C.
       4) High degree of mechatronics. On the basis of improving the accuracy of temperature measurement and control, workpiece movement, air pressure regulation and power regulation can be programmed in advance, and quenching and tempering can be carried out step by step.
       5) Energy consumption is significantly lower than that of salt bath furnace. Modern advanced vacuum furnace heating chamber uses high-quality insulation material to make insulation wall and barrier, which can highly concentrate the electric heating energy in the heating chamber, and the energy saving effect is remarkable.

Function

Vacuum quenching (tempering, annealing) is a method to achieve the desired performance by heating and cooling materials or parts in vacuum according to the technological rules.
       Vacuum brazing is a kind of welding process in which a group of welding parts are heated to the melting point temperature of filler metal above but below the melting point temperature of matrix metal under vacuum condition, and the welding seam is formed by wetting and flowing of filler metal to matrix metal (brazing temperature varies with material).
       Vacuum sintering is a method of sintering metal powder products into parts through adhesion and diffusion of adjacent metal powder grains by heating them in vacuum.
       Vacuum magnetization is mainly applied to the magnetization of metal materials.

Application

1. Gas Quenching Vacuum Furnace with High Pressure and High Flow Rate
       It is mainly used for vacuum heat treatment of cold and hot working die steel, high speed steel, elastic alloy, superalloy, stainless steel, titanium alloy, magnetic material, etc.

2. Double chamber high pressure gas quenching vacuum furnace
         It is mainly used for high pressure gas quenching, vacuum sintering and vacuum brazing of cold and hot working die steel, high speed steel, elastic alloy, superalloy, stainless steel, titanium alloy, magnetic material and other materials.

3. Double-chamber oil quenching gas-cooled vacuum furnace
         It is mainly suitable for bright quenching of tool steel, die steel, bearing steel, spring steel and other materials.

4. Vacuum Aluminum Brazing Furnace
         It is mainly suitable for vacuum welding of automobile radiators, air conditioning evaporators, condensers, intercoolers, radar mesh antennas, waveguide tubes and various plate or tube heat exchangers.

5. Vacuum High Temperature Brazing Furnace
         It is mainly suitable for vacuum brazing of stainless steel, superalloy, cemented carbide, non-ferrous metal and other materials.