inverter practice

[ta borom]

Hi fellas, been off for some time...well, I got myself a Telwin Tecnica 155 (150 amps). It has HF, and pre/post flow settings for argon...I am quite happy with it "cos I got it purely for when I need neater weld than MIG or OXY/ACET.
However I have been trying to weld thin steel/stainless sheet( 0.8mm), and blew holes even with 25amps,when I get it down to 15amps, it will take age to melt the metal
Do you think that this is possible WITHOUT filler rod?
Regarding aluminium, can it be welded even though it will not be so neat?(it's only DC)...any techniques/tips?

 

[irondarren]

with out filler rod, yes it can be done with out filler rod, fusing joints is not an uncommon practice. it will take a little practice

 

[runnach]

25amps and blowing through, maybe the obvious, make sure torch is fitted to electrode negative.

Struggling to melt matl at 15amps, I assume with torch in same port, I'm a bit puzzled??

Cheers.........

 

[matt1978]

Regarding aluminium, can it be welded even though it will not be so neat?(it's only DC)...any techniques/tips?

You wont be able to weld Aluminium with that machine as, you already pointed out its DC only, for Alu you need AC/DC.

 

[Shox Dr]

what type of joint are you welding on the SS, I weld .9mm SS all day long

Ex-corner fused or filler(1.0mm) 23-25Amps
Lap 35-39 amps


As for welding ALi with DC, you can but it only realy works over 250amps