Which of the following gases plays an important role in welding titanium, aluminium, stainless steel, and magnesium?
Show answer & explanation
Correct answer: C
Explanation
The correct answer is option 3 i.e. Argon.
The gas that plays a crucial role in welding titanium, aluminium, stainless steel, and magnesium is argon (Ar).
Key Reasons:
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Inert Nature: Argon is chemically inert, preventing oxidation and contamination of reactive metals like titanium and aluminium during welding.
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Shielding Gas: In TIG (Tungsten Inert Gas) and MIG (Metal Inert Gas) welding, argon shields the weld pool from atmospheric gases (oxygen, nitrogen).
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Stability: Ensures clean, high-quality welds for stainless steel and magnesium, which are prone to defects when exposed to air.
Argon’s non-reactive properties make it indispensable for welding these metals.