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How to use zirconia ceramic rods under high temperature and high pressure conditions correctly?
Time: 2018-12-26   Writer: mingrui

How to use zirconia ceramic rods under high temperature and high pressure conditions correctly?


As far as we know, zirconia ceramics have the characteristics of wear resistance, high temperature resistance and non-conductivity. However, if the piezoelectric zirconia ceramic rod is not used properly under high temperature and high pressure, it will cause some damage to the ceramic rod. High-voltage zirconia ceramics After the rod is heated in the air, a dense zirconia film is formed on the surface to become an anti-oxidation protective film, which serves to extend the life. The greater the amount of current applied to the ceramic rod, the higher the surface temperature of the ceramic rod.

The ceramic rod has a shorter life with higher use temperature. Therefore, after the furnace temperature exceeds 1600 ° C, the oxidation speed is accelerated and the life is shortened. In use, care should be taken not to make the surface temperature of the ceramic rod too high.
 
In the course of use, the resistance is gradually increased due to oxidation of the rod, and the operating voltage should be increased in order to keep the furnace temperature normal. When the voltage is raised to the maximum limit of the transformer used, the furnace can be changed to change the wiring mode and continue to be used.
 
When the new furnace starts to transmit power, the voltage should be gradually increased in order to prevent the broken rod. Generally, the starting voltage is 1/2 of the rated voltage. After all normal, the voltage is gradually increased. The new furnace or the unused furnace must be ovend before use. When using the oven, use old rods or other heat sources.
 
It is strictly forbidden to use ceramic rods for overload. If the rod breaks due to the reason or the rod is not evenly heated, and the part is incandescent or dark red for a period of time, this indicates that the aging of the rod is inconsistent, and the resistance difference between the sections is too large, and the rod should be shut down for repair.
 
During the storage process, pay attention to moisture. If it is found that the aluminum spray at the end of the rod is degraded, the aluminum can be re-sprayed after surface treatment. If there is no aluminum spray condition, a few layers of aluminum foil can be wrapped in the aluminum spray section.
 
The correct use of high temperature ceramic high pressure resistant zirconia ceramic rods is as above, and I hope to provide a reference for everyone.

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