Where can I recharge when the argon is used up?

Argon gas is generally provided by gas stations. The argon inlet should be placed at the lower position of the closed section as far as possible, and the gas outlet should be placed at the highest position of the closed section. Because argon is heavier than air, it is easy to ensure a higher concentration by charging argon from a lower position, and the protective effect of argon charging is better. In order to reduce the loss of argon in the pipe from the butt joint gap, affect the protection effect of the welding torch and increase the cost, adhesive tape can be attached to the gap between the welding joints at the welding front, leaving only one continuous welding torch for the welder.

Argon arc welding:

Argon arc welding is a welding technology using argon as shielding gas. Also known as argon shielded welding. Argon shielding gas is introduced around arc welding to isolate the air in the welding zone and prevent the welding zone from oxidation. Argon arc welding technology is a kind of welding technology developed on the basis of ordinary arc welding principle. Argon gas is used to protect metal welding materials, and the welding materials are melted into liquid on the welded substrate by large current to form a molten pool, so that the welded metal and welding materials can achieve metallurgical bonding.