Podcast
Questions and Answers
What is the primary material used to make the electrode in the tungsten inert gas welding process?
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?
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?
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?
What is the recommended process for joining thin aluminium sheets of thickness less than 1mm?
What is the purpose of the inert gas in the tungsten inert gas welding process?
What is the purpose of the inert gas in the tungsten inert gas welding process?
Why is welding of aluminium and its alloys using shielded metal arc welding process not preferred?
Why is welding of aluminium and its alloys using shielded metal arc welding process not preferred?
What is the typical shape of the tungsten electrode used in TIG welding?
What is the typical shape of the tungsten electrode used in TIG welding?
What is the purpose of the inert shielding gas in TIG welding?
What is the purpose of the inert shielding gas in TIG welding?
What is the purpose of the collet in the TIG welding torch?
What is the purpose of the collet in the TIG welding torch?
Why is DCEP polarity preferred for welding reactive metals like aluminum?
Why is DCEP polarity preferred for welding reactive metals like aluminum?
What is the range of welding current typically used in TIG welding?
What is the range of welding current typically used in TIG welding?
Why must the gas nozzle be replaced at regular intervals?
Why must the gas nozzle be replaced at regular intervals?
