TIG welding (Tungsten Inert Gas) is the welding process that uses non-consumable electrodes.

Explanation:

TIG welding is a type of arc welding process that uses a tungsten electrode to create an electric arc. This electrode is non-consumable, which means it does not melt during the welding process. Instead, it remains intact and serves as a heat source to melt the base metal.

Key points:

- TIG welding is commonly used for welding thin sections of stainless steel, aluminum, and other non-ferrous metals.
- The non-consumable electrode is made of tungsten, a high-melting-point metal that can withstand the heat generated during the welding process.
- TIG welding requires the use of a shielding gas, such as argon or helium, to protect the welding area from atmospheric contamination.
- The welding arc is created by applying a high voltage between the tungsten electrode and the workpiece.
- The operator controls the welding process by manipulating the position of the electrode and the filler metal, if necessary.
- TIG welding produces high-quality welds with excellent precision and control.
- It is commonly used in applications where aesthetics and weld quality are important, such as in the aerospace and automotive industries.
- TIG welding can be performed in various positions, including flat, horizontal, vertical, and overhead.
- The process requires skill and practice to master, as it involves precise control of the heat input and the filler metal addition.

Conclusion:

In conclusion, TIG welding is the welding process that uses non-consumable electrodes. It is a versatile and precise method commonly used for welding thin sections of stainless steel, aluminum, and other non-ferrous metals. The non-consumable tungsten electrode remains intact during the welding process and serves as a heat source to melt the base metal. TIG welding requires the use of a shielding gas and offers excellent weld quality and control.

A) TIG welding uses non consumable electrode made of tungsten(W).