Regularly check items and maintain the atmosphere furnace to extend the service life
Time：2020-11-13 09:40
Regularly check items and maintain the atmosphere furnace to extend the service life
1. When using the atmosphere furnace, the rated power shall not be exceeded, and the furnace temperature of the box-type atmosphere furnace shall not exceed the use temperature as far as possible. It is forbidden to put wet workpieces into the furnace. Heated workpieces containing excessive moisture should be dried in advance. Atmosphere furnace extends service life
2. Keep the furnace clean, and remove the metal oxides, slag and impurities in the furnace in time. Care should be taken when loading and unloading the workpiece to prevent damage to the silicon molybdenum rod. Regular inspection items are well maintained
3. Silicon molybdenum rod alkali, alkali metal, silicic acid and boron compound can corrode it at high temperature, water vapor has a strong oxidizing effect on it, hydrogen and gas containing a large amount of hydrogen will decompose silicon molybdenum rod at high temperature , You must pay careful attention when using,
4. The workshop must be equipped with 1/2 pipe with a water source back force of 0.2MPa.
5. Connect the gas filling port and charge CO2 and other protective gases. When the pressure gauge of the box atmosphere furnace indicates 0.02～0.04 MPa, stop filling.
6. By investigating the flow rate and controlling the temperature of the outlet at 40℃c gh.
7. Regularly check whether each terminal is in good contact.
8. Set the temperature according to the process, energize and keep warm.
9. When the furnace temperature rises, you should pay attention to it at all times. The pressure is long and the vent valve is opened intermittently to keep the pressure in the furnace bladder below 0.1MPa. At this time, the oil fume and other impurities in the furnace can be discharged.
10. Implement bright annealing, open the vent valve when the temperature is raised, and the flow rate will change from small to large. When the pressure in the box-type atmosphere furnace is positive, all valves will be closed. This process should be tested by skilled workers.
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