How to ventilate the putkiuuni?

Tube furnaces are mainly used in experiments and small batch production in universities, research institutes, industrial and mining enterprises, etc. So do you know how to ventilate the tube furnace? Let’s take nitrogen as an example to show you how to pass gas to the down tube furnace.

1. Connect the tube of the tube furnace to the nitrogen gas circuit, and check the leaks with soapy water at each joint to confirm that there is no gas leakage.

2. Check that the valves of the tube furnace and nitrogen cylinder are closed.

3. Open the main valve of the nitrogen cylinder, and then slowly open the outlet pressure reducing valve to keep the outlet pressure at 0.1MPa.

4. Turn on the power of the mechanical pump, open the outlet valve of the tube furnace and the two valves on the gas path of the mechanical pump, and pump for 5 minutes.

5. Close the two valves on the gas path of the mechanical pump, close the outlet valve of the tube furnace, and turn off the mechanical pump.

6. Open the upper gas path control valve and make the button arrow point to the “open” position.

7. Adjust the flowmeter knob to make the reading at 20ml/min.

8. Open the air inlet valve of the tube furnace until the barometer reads zero.

9. Open the inlet valve of the tube furnace, and open the outlet valve on the nitrogen gas path.

10. The tube furnace can only be heated after 10 minutes of nitrogen gas.