How to replace the air in the container with argon in welding construction

1. Prepare operating materials: argon tank, trachea, gas valve, gas nozzle, etc.

2. Ensure that the impurities in the welding container have been removed, and put the parts to be welded into the welding container.

3. Open the valve of the argon tank, transport argon to the upper part of the welding container through the gas pipeline, and gradually discharge air by using the characteristic that argon is heavier than air.

4. When the air in the welding container completely turns into argon, close the air valve and tank valve.