The structure characteristics of vacuum annealing furnace are as follows: the heating chamber adopts stainless steel skeleton; the heat shield is a multi-layer reflecting screen with long service life and easy maintenance; the failure rate is low; the air-cooling system is composed of high-speed motor, high-pressure impeller with large air volume, and guide plate, copper-copper heat exchanger and guide device, so that the air flow can be realized by heat exchanger-fan-guide device. - The high-speed cycle of workpiece-heat exchanger enables the workpiece to be cooled quickly and evenly. The electronic control system adopts the way of PLC and programmable temperature controller to realize three control modes: full-automatic, semi-automatic and manual, with flexible operation.
Cautions for the use of vacuum annealing furnace: 1. The parameters on the vacuum meter have been adjusted. No arbitrary modification and setting are allowed. 2. During operation, attention should be paid to the changes of current, voltage and water temperature at any time, and any abnormalities should be dealt with or reported in time. 3. It is strictly forbidden to deal with electrical faults privately, so electricians should be asked to remove them. 4. If the touch screen breaks down, the manual/automatic switch can be put into the manual file, and the vacuum pumps, valves and temperature controllers can be operated from the beginning. The operation steps of the vacuum pumps, valves and temperature controllers are the same as those of the automatic ones, but the manual operation mechanism can be changed from the touch screen to the button.
The advantages of vacuum annealing are as follows: 1. No oxidation, decarbonization and carbon addition have good protection on the inner and surface of the workpiece. After vacuum annealing, the workpiece has primary color 2. Improve the overall mechanical properties, degassing and promote the purification of the metal surface. 3. It can reduce the volatility of gold-bearing elements in workpieces. 4. Vacuum annealing furnace has high thermal efficiency, controllable heating and cooling rate, good stability and repeatability. 5. Workpiece deformation is small, reducing the subsequent processing procedures and saving costs.
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