When utilizing a spray method for 1/8 inch aluminum, what voltage is recommended?

The recommended voltage when utilizing a spray method for 1/8 inch aluminum is typically within the range of 21-22 volts. This voltage range is optimal for achieving a stable arc and effective transfer of the filler material, leading to a smooth and consistent weld bead. The spray arc is characterized by a broader and softer arc that helps minimize spatter while ensuring good penetration and fusion into the aluminum base material.

Using the voltage within this range allows for the right balance of heat input and transfer efficiency. Higher voltages may lead to excessive heat and poor control over the weld pool, while lower voltages can result in inadequate penetration and a tendency for the weld to become inconsistent. Therefore, sticking to the recommended range of 21-22 volts is crucial for effective spray transfer in MIG welding of aluminum materials.