Tungsten Inert Gas Welding process:
- TIG (Tungsten Inert Gas) Welding is used for high-quality requirement. In this gas welding electrode is non-consumable tungsten. the welding metal thickness should be about 5 mm.
- Inert gas welding has less efficiency and a slow process.
- This process is done by producing the arc between the non-consumable tungsten and welded metal. to shield the electrode and weld pool the gas should be fed through the torch.
- We can use different types of shielding gases in this welding process like.
- Argon, Argon+Hydrogen, Argon+Helium.
- To increases, the heat input helium is added. and to get clean result welds and high heat input Hydrogen is added.
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Applications of TIG welding:
- Tungsten Inert Gas is used for welding sheet metals.
- This is used for welding high temperature and hard surfacing materials.
- This method is also used for stainless steel, magnesium alloys, copper base alloys etc.
- This is also used for Aircraft industry applications.
- This welding is used in the fabrication of rocket motors.
Advantages of Tig welding:
- This welding process is highly used for thin materials. this type of welding gives good results for thin materials.
- In this welding, there is a clear visibility of arc and workpiece, due to this, it can operate easily.
- In this there is no flux coating due to this there is no harm by flux entrapment.
- The work can don easily at any position, clean and perfectly by less spatter.
Limitations of TIG welding:
- Due to the requirement of additional filler rod, it is relatively a slow process.
- Tungsten material contaminates the weld, which is hard and brittle.
- Shield causes Contamination to the weld metal when the filling comes out from the inert gas.
- Equipment cost is high.
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