What is Hertz in Welding?
Hertz (Hz) is the symbol that has replaced the term cycles per second. Today, rather than saying 60 cycles per second or simply 60 cycles, we say 60 Hertz or 60 Hz. In welding, Hertz is used to measuring the alternating current (AC) waveform supplied to an arc welder. An AC welder does not produce a continuous electrical current, but rather an oscillating or alternating current. The number of times per second that the current changes from positive to negative is called the frequency and is measured in Hertz.
Welding machines are available that operate at 50 Hz or 60 Hz. In North America, almost all power supplies operate at 60 Hz, while in Europe and other parts of the world, 50 Hz is more common.
What is the difference between 60 Hz and 50 Hz?
The main difference between 50 Hz and 60 Hz is the amount of time that the current spends at each extreme. At 60 Hertz, the current will spend less time at the positive and negative extremes than it would at 50 Hertz. The result is that the 60 Hz arc is more stable, while the 50 Hz arc tends to be slightly more erratic.
What is Hertz in TIG welding?
The term Hertz is also used in TIG welding to measure the alternating current (AC) waveform supplied to the arc welder. The number of times per second that the current changes from positive to negative is called the frequency and is measured in hertz.
What frequency do welders use?
The frequency used in welding can vary depending on the application. In general, 60 Hz power sources are used for light-duty welding applications such as thin metals and sheet metal, while 50 Hz power sources are used for heavy-duty welding applications such as thicker metals.
What is the best setting for welding aluminum?
The best setting for welding aluminum is 50 Hz. This frequency provides more stability to the arc, which is important when welding aluminum.
AC TIG welding aluminum settings
- Frequency – 50 Hz.
- Amperage – 60-80 amps.
- Slow to medium.