First beads with Murex transtig Ali.

[roblane65]

Right I'll try not to ramble to much and bore everyone but lots of questions .any critique and help will be gratefully received . I finally got the transtig sorted today , downloaded the manuel yesterday had glance at as you do and dived in . I had to make a bit of an adapter for the gas out a both torches I have have got rectus couplers

so it's set up with a ck wp9F standard collet body no7cup and 2.4 tungsten ( type unknown but it was already sharpened both ends )
3mm ali wire brushed I setthe machine fq 50hz bal 65% and 100 amps and these were the results



I know I couldn't wait and a fair bit of heat saturation . I'll have a good read of the tutorial again and a better read of the manual , One big question I do have having used an old kemppi DC machine ( all analogue ) was on the control panel when I tried to set the final current Pressing the button didn't change anything on the display and I'm thinking something isn't right ! From the view on the display I'm presuming the the upslope time is a 1/4 of whatever you set the down slope to ? apart from the FC control every other function appears to work ,well the buttons do . The other thing I think wasn't helping was the table I was welding on ( it's an old makita folding chop saw table ) the ground was on the table but its only thin metal pretty dirty and uneven so maybe a clean off might help . More questions to follow
btw the piece with the four holes already had four drill holes in it

 

[voipio]

Seems like a good start. Good clean welds apart from not enough shielding gas on part of the weld nearest the camera, first weld pic. Was the system purged before starting?

 

[brockenhammer]

Hi,
looks good for the first try.
The machine is mady by Stel in italy, maybe you find more information on their manual.
Here you will find one:

https://www.stelgroup.it/wp-content/uploads/2021/09/TIG-uP-201H-AC-DC.pdf

 

[roblane65]

Hi,
looks good for the first try.
The machine is mady by Stel in italy, maybe you find more information on their manual.
Here you will find one:

https://www.stelgroup.it/wp-content/uploads/2021/09/TIG-uP-201H-AC-DC.pdf

thanks for that , I've printed off the murex manual I'll have a look though ,

 

[roblane65]

Well that helped it did confirm my thoughts about the up slope being preset at a 1/4 of the slope down . Now I just need to find out whats going on with the final current switch and some more playing around , I may try and see if it works when it's need DC mode.

 

[brockenhammer]

Hi,
final current should be percentage of the main amps.
So when welding at 100A, and set to 25% it levels down to 25A crater fill amps before shut down.

 

[roblane65]

that I understand and would be fine if the display would change when I press FC and allow me to dial in a percentage
first port of call will be covers off and check all the connectors . I have had the machine some time ( dry stored ) but only just set it up , when I got it I powered it up and checked all the buttons and all worked fine

 

[addjunkie]

I may be suggesting testicles, but change the mode to the bottom one, then try to set fc

 

[roblane65]

" testicles " I'll give that a try good suggestion . This is the first digi tig for me so a bit trial and era ,

 

[roblane65]

I may be suggesting testicles, but change the mode to the bottom one, then try to set fc

Who's a clever dickie then ? Give yourself a gold star much more reading of the manual needed me thinks
Thank you.

 

[addjunkie]

Who's a clever dickie then ? Give yourself a gold star much more reading of the manual needed me thinks
Thank you.

Not clever just have many years experience with similar “ technical issues”

 

[roblane65]

Seems like a good start. Good clean welds apart from not enough shielding gas on part of the weld nearest the camera, first weld pic. Was the system purged before starting?

probably not .

 

[roblane65]

Well I got another half hour this evening and the results and some more reading a bit of messing with settings

A bit better ? I was struggling at the end of bead as the downslop time was too long , more tweaking needed.
lessons learned use bigger filler , move quicker , leave the torch in place for post gas .
I need to get more familiar with the machine , as said first digi for me. Also I wasn't releasing the button early enough before the end of the run . I need a lot more 3mm ali , I can't wait for some more seat time tomorrow and might even try the pedal .

 

[addjunkie]

Try bigger practice pieces, they wont get heat soaked so quickly, or swap between pieces and allow to cooling time. Battering into the same small coupon gives false impressions as they get so hot.

 

[roblane65]

Yea I realized it's getting heat soaked and there's a bit of impatience on my side . I've got a load of 5mm ali of @Hood
maybe I'll rig up the bigger torch and have a go with the thicker stuff .

 

[roblane65]

Another hour teatime and some more beads and as suggested some bigger scraps and some cooling time

a little better I think , still struggling a bit tailing of the bead and I've cut the slope down time a lot .But I'm sort of understanding a bit better what's going on .
Lessons learned today , get comfortable get some some new belts for the sander !

I've been using the belt sander and a cordless to sharpen tungstens I might add with a crappy old 80 grit belt been used for all sorts has it really made a difference to welds I havn't exactly been going overboard on the cleaning the ali either . But I have enjoyed what I've done so far .