Question
Download Solution PDFGas Metal Arc Welding refers to:
Answer (Detailed Solution Below)
Detailed Solution
Download Solution PDFExplanation:
Gas metal arc welding (GMAW) or Metal inert gas arc welding (MIG)
- In this process, the arc is formed between a continuous, automatically fed, metallic consumable electrode and welding job in an atmosphere of inert gas, and hence this is called metal inert gas arc welding (MIG) process.
- The shielding gases for MIG welding are mixtures of argon, oxygen, and CO2, and special gas mixtures may contain helium.
Electron beam welding
- Electron beam welding joins metals by bombarding a specific confined area of the base metal with high-velocity electrons.
- The operation is performed in a vacuum to prevent the reduction of electron velocity.
- It allows fusion welds of great depth with a minimum width because the beam can be focused and magnified.
- As you can see in the above diagram that in electron beam welding is focused on the weld spot using the magnetic lens.
TIG Welding:
- Tungsten Inert Gas (TIG) or Gas Tungsten Arc (GTA) welding is the arc welding process in which arc is generated between non-consumable tungsten electrode and workpiece.
- The tungsten electrode and the weld pool are shielded by an inert gas normally argon and helium.
- The principle of the tungsten inert gas welding process is shown below
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