Based on the provided information, TAG welding was a specific type of arc welding process.
According to the reference:
- TAG welding was then the use of a tungsten tipped arc creating welding machine.
- The tip was centered in a shroud that fed argon gas around the tungsten tip.
- The purpose of the argon gas was to prevent the composition of the weld becoming oxidised and fragile.
- TAG welding used rods of a metal suitable for the material to be welded permanently together.
Essentially, it was a process that utilized a tungsten electrode and an inert gas (argon) shielding to create a clean, strong weld using a filler rod.
Understanding the Components of TAG Welding
The reference highlights several key components and aspects of the TAG welding process:
- Tungsten Tipped Arc: The core of the process involved an electric arc generated from a tungsten electrode. Tungsten is used due to its high melting point, allowing it to carry the arc without melting itself.
- Argon Gas Shielding: An inert gas, specifically argon, was crucial. It was fed through a shroud surrounding the tungsten tip.
- Preventing Oxidation: The primary function of the argon gas was to protect the molten weld pool and the electrode from atmospheric contamination (like oxygen and nitrogen), which can cause oxidation and make the weld brittle.
- Filler Rods: Metal rods were used as filler material. These rods were chosen to match the material being welded, ensuring a strong and compatible joint.
How it Worked (Based on Reference)
The process involved:
- Generating an arc using the tungsten electrode.
- Shielding the arc and weld area with argon gas.
- Adding filler metal from a suitable rod to the joint as needed.
This method aimed to create a high-quality, non-oxidized weld.
Key Takeaway
In summary, as described in the reference, TAG welding was an arc welding technique characterized by the use of a tungsten electrode, argon gas shielding to protect the weld from oxidation, and the addition of filler metal rods to join materials permanently.
