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Tungsten Inert Gas Welding Process Quiz

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Questions and Answers

What is the primary material used to make the electrode in the tungsten inert gas welding process?

Aluminium

Tungsten (correct)

Copper

Magnesium

Why is the tungsten inert gas welding process necessary for welding reactive metals and alloys?

To prevent contamination from atmospheric gases (correct)

To increase the strength of the weld joint

To reduce the heat input required for melting

To remove impurities from the weld pool

What is the primary limitation of the SMAW and Gas welding processes when welding reactive metals and alloys?

Inability to weld thin sheets

Poor control over the heat input and contamination from atmospheric gases (correct)

High heat input

Corrosive properties of the weld

What is the recommended process for joining thin aluminium sheets of thickness less than 1mm?

Tungsten Inert Gas Welding Signup and view all the answers

What is the purpose of the inert gas in the tungsten inert gas welding process?

To shield the weld pool from atmospheric gases Signup and view all the answers

Why is welding of aluminium and its alloys using shielded metal arc welding process not preferred?

Due to the corrosive properties of the halides Signup and view all the answers

What is the typical shape of the tungsten electrode used in TIG welding?

Ball tip Signup and view all the answers

What is the purpose of the inert shielding gas in TIG welding?

To protect the molten weld pool from atmospheric gases Signup and view all the answers

What is the purpose of the collet in the TIG welding torch?

To hold the tungsten electrode in position Signup and view all the answers

Why is DCEP polarity preferred for welding reactive metals like aluminum?

Because it helps to clean the weld pool Signup and view all the answers

What is the range of welding current typically used in TIG welding?

3-200A Signup and view all the answers

Why must the gas nozzle be replaced at regular intervals?

Because it gets worn out due to intense heat Signup and view all the answers