Muffle furnace repair and maintenance considerations

Precautions for maintenance and maintenance of muffle furnace:

The shape of the box type resistance furnace is a rectangular parallelepiped. The task room is made of high-quality carbon capsule filling machine-made silicon refractory material. The furnace shell is made of high-quality cold-rolled steel plate and welded by small particle machine. The quality between the furnace and the furnace shell is high. Insulation data is used as insulation layer. Muffle furnace is generally applicable to all kinds of laboratories, industrial and mining enterprises, scientific research units. In order to increase the heat loss of the furnace mouth and improve the average temperature inside the furnace, a heat shield made of high-quality refractory materials is installed inside the furnace door.

The box type resistance furnace repairs and maintains the silicon carbon rod type furnace. After the silicon carbon rod is damaged, the new silicon carbon rod with the opposite specification and similar resistance value should be changed. When changing, first remove the maintenance cover and silicon carbide rod at both ends, and then take out the damaged silicon carbon rod. Since the silicon carbon rod is easy to break, the device should be careful, the inner part of the exposed shell should be equal, and the chuck must be Fasten to make good contact with the silicon carbon rod.

If the chuck is severely oxidized, it should be replaced. The slits at the holes in the device at both ends of the silicon carbon rod are infarcted with asbestos. The furnace temperature must not exceed the Zui high task temperature of 1350 °C. The silicon-carbon V-type mixer rod allows for four hours of continuous task at low temperatures. After the electric furnace has been used for a long time, if the heating power conditioning knob is adjusted in a clockwise direction to the large position, the heating current is still not going up. The small size labeling machine has a far extra value and does not reach the required heating power, explaining that the silicon carbon rod has aged.

The box type resistance furnace does not need to be assembled with silicon carbon rods when changing the connection method. It only needs to change the connection method, and after changing the connection method, pay attention to the slow conditioning heating power conditioning button when using the muffle furnace, and the heating current value must not exceed the extra value.

The box type resistance furnace should be placed in a small, ventilated, non-corrosive gas mixer. The ambient temperature is 10-50 °C and the absolute temperature is not more than 85%.

To ensure accurate measurement, the DC potentiometer is used to calibrate the temperature meter of the xmt type temperature controller every year to prevent large errors. Check whether the parts of the box type resistance furnace are loose, whether the contacts of the AC contactor are good, and the defects should be repaired in time.

Box type resistance furnace level maintenance box type resistance furnace anti-static clean clothing level maintenance of the infiltration agent medium input maintenance content and requirements are as follows:

1. The infiltration medium input line is unblocked and does not leak.

2. Clean the drip chamber and read clearly.

3. Check that the exhaust pipe is intact and not blocked.

4. Check the exhaust and keep it safe.

5. Check the joints and valves of each pipe and tighten.

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