Vacuum furnace

The vacuum furnace, that is, the vacuum system (the vacuum pump, the vacuum measuring device, the vacuum valve and other components are carefully assembled) in a specific space of the furnace cavity, the part of the furnace cavity is discharged, so that the pressure in the furnace cavity is less than a standard atmospheric pressure. The space inside the furnace chamber is thus in a vacuum state, which is a vacuum furnace.1) The oxidation and decarburization of the surface of the workpiece during heating are completely eliminated, and a clean surface without a deteriorated layer can be obtained. This is highly relevant for the improvement of the cutting performance of the tool that only grinds one side during sharpening (for example, the twisted surface of the grooved surface is directly exposed to the cutting edge after the twist drill is ground).2) No pollution to the environment, no need to carry out three waste treatment.3) The furnace temperature measurement and monitoring accuracy are obviously improved. The indicated value of the thermocouple and the furnace temperature reached ±1.5 °c. However, the temperature difference between different parts of the workpiece in the furnace is large. If the lean gas is used for forced circulation, it can still be controlled within the temperature range of ±5 °c.4) High degree of mechatronics. On the basis of improved temperature measurement and control accuracy, workpiece movement, air pressure adjustment, power adjustment, etc. can be pre-programmed, and quenching and tempering can be carried out according to the steps.5) The energy consumption is significantly lower than that of the salt bath furnace. The modern and advanced vacuum furnace heating chamber uses heat-insulating walls and barriers made of high-quality heat-insulating materials, which can concentrate the electric heating energy in the heating chamber, and the energy-saving effect is remarkable.Vacuum quenching (tempering, annealing) is a treatment method that achieves the desired performance by heating and cooling the material or part under vacuum in accordance with the process.Vacuum brazing is a welding process in which a set of welded parts is heated to a temperature above the melting point of the filler metal under vacuum, but below the melting point temperature of the base metal, by means of the wetting and flow of the filler metal to form a weld. Brazing temperatures vary by material).Vacuum sintering is a method in which a metal powder product is heated under vacuum to cause adjacent metal powder grains to be sintered into parts by adhesion and diffusion.Vacuum plus magnetic is mainly suitable for magnetic processing of metal materials.The vacuum furnace is generally composed of a main machine, a furnace, an electric heating device, a sealed furnace shell, a vacuum system, a power supply system, a temperature control system, and an outside transport vehicle. The sealed furnace shell is welded with carbon steel or stainless steel, and the joint surface of the detachable member is sealed with a vacuum sealing material. In order to prevent deformation of the furnace shell after heating and deterioration of the sealing material, the furnace shell is generally cooled by water or air cooled. The furnace is located in a sealed furnace shell. Depending on the furnace application, different types of heating elements, such as resistors, induction coils, electrodes and electron guns, are installed inside the furnace. The vacuum furnace furnace for melting metal is equipped with crucibles, and some are equipped with automatic pouring devices and robots for loading and unloading. The vacuum system is mainly composed of a vacuum pump, a vacuum valve and a vacuum gauge.Email: haoyue@haoyue-group.com

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