Many trendy TIG welders are able to performing what’s known as pulse welding. This function quickly cycles the welding present between a excessive (peak) and low (background) amperage. This pulsing motion provides the individual welding higher management over the warmth enter, which could be particularly helpful in sure welding situations.
Peak present is the place the vast majority of the welding and fusion happens. It gives the mandatory vitality to soften the bottom metallic. The decrease background present maintains the arc however reduces warmth enter to the fabric, permitting the puddle to chill barely. The heartbeat frequency, measured in pulses per second (Hz), controls how usually the welder switches between the height and background present. Some machines permit changes to the heart beat width (the time spent at peak present) and pulse frequency.
Pulsing the present reduces the general warmth enter. That is particularly useful in stopping overheating or warping of skinny or heat-sensitive supplies like chrome steel or aluminum. Pulsing may help keep a secure arc at decrease general warmth ranges. This improves weld bead consistency, particularly in out-of-position welding. By minimizing the warmth enter, pulse welding may help forestall distortion in skinny metallic sections.
Welders can obtain deeper penetration with much less whole warmth enter by focusing the warmth through the peak present and lowering it through the background present cycle. The heartbeat setting helps create extra uniform and visually interesting welds. That is significantly valueable in industries the place look is essential, like aerospace, automotive, and inventive metalwork.
On this video, skilled fabricator Vince at VC Metallic Worx demonstrates the method utilizing Eastwood’s TIG 200 LCD welder. Watch as he compares pulse welding to the normal non-pulse TIG welding method on chrome steel tubing.
