What type of current is typically used in TIG welding?

What type of current is typically used in TIG welding?

• A. Alternating current (AC) only
• B. Direct current (DC) only
• C. Both AC and DC
• D. High-frequency current

Answer: (C)

TIG (Tungsten Inert Gas) welding can utilize both alternating current (AC) and direct current (DC), making it versatile for various applications and materials. DC is primarily used for welding materials like steel and stainless steel because it provides a stable arc and deep penetration. On the other hand, AC is preferred for aluminum and magnesium because it helps clean the oxide layer on these materials, allowing for better fusion during welding. The ability to switch between these two types of current allows welders to optimize their welding process based on the materials they are working with, ensuring better results and stronger welds. This adaptability is crucial in many welding scenarios where different metals require specific welding conditions for optimal outcomes.

TIG (Tungsten Inert Gas) welding can utilize both alternating current (AC) and direct current (DC), making it versatile for various applications and materials. DC is primarily used for welding materials like steel and stainless steel because it provides a stable arc and deep penetration. On the other hand, AC is preferred for aluminum and magnesium because it helps clean the oxide layer on these materials, allowing for better fusion during welding. The ability to switch between these two types of current allows welders to optimize their welding process based on the materials they are working with, ensuring better results and stronger welds. This adaptability is crucial in many welding scenarios where different metals require specific welding conditions for optimal outcomes.