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Equivalence to a High Frequency Start

Equivalence to a High Frequency Start

Equivalence to a High Frequency Start

(OP)
In welding statinless with a GTAW procedure. Would a lift start be considered an equivalent to a high frequency start.

Thanks in Advance

RE: Equivalence to a High Frequency Start

Not the equivelant but it achieves the same end result. No arc strikes or broken tungsten stuck to the base metal.

The equipment I have used for lift start was much more foregiving when crawling through pipe racks and covered with sweat.

In many cases scratch start is used with a regular CC power source.

If your reference to "procedure" is an ASME Sec IX WPS. The arc initiation method is not controlled.

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