Pulse TIG in AC mode

[THX1138]

Hello,
anyone with experience using pulse over 10pps in AC mode (for aluminium alloys)? Does it have any advantages over low frequency pulse or no pulse?
I'm buying new machine, so I'd like to know if this ability is important.
Thanks

 

[Richard.]

Never seen any real advantages of pulse on ac personally. My machine does it and I never bother with it.

 

[Hood]

I am the same, tried pulse but never really got on with it.

 

[HughF]

The only AC pulse I would recommend is the 'AC Special' mode on the EWM, the 'Advanced pulse' on the Everlast/R-Tech and the 'Mixed Tig' mode on the hitachi. This is a type of pulse where the arc goes from AC to DCEN and back, usually at 1-1.5Hz. This allows you to increase depth of penetration and increase travel speed on thick aluminium.