Hi,
I finally tested out SiBr MIG with pulse as I have a large overly and build up I need to do for a part and didn't want to have to TIG braze it. I am using a CIGWELD xf252 with a pulsemate using the built in program for SiBr which is for 0.9mm wire with 100% argon. Side note the built in program for 1.2mm SiBr wire is with C10 gas, I didn't realise you would ever run SiBr with anything but 100% argon but I'm really interest if anyone as an opinion on C10 vs 100% Ar with SiBr spray/pulse mig. Also I am using 0.8mm wire rather than 0.9mm wire, I would just buy a 0.9mm spool but at nearly $300NZD for a 5kg spool I really rather use what I have before investing in more, I assume the 0.8mm will be fine expect at much higher amps. So far it seems to be running fine, lays down really well and I haven't need to trim back the volts at all from the program default. I am currently testing it on 4mm RHS tube, with the 4mm SiBr single pulse program and wire and gas as above.
I have run the same wire as just spray transfer with my little unimig viper 165 and while it ran ok, it was rather uncontrollable and I didn't put much time into tuning it as I just ran TIG when I needed to use SiBr.
I have been getting really good results using the single pulse mode. The only issue I am having is I am getting the wire stuck to the contact tip due to a small bead that keeps forming on it (the contact tip). It doesn't affect it when running and it only seems to 'stick to the wire' when its hot. The wire is not burning back/fusing into the contact tip, I think its just sticking to the hot blob that keeps forming on the contact tip as I can just break it off the blob and the wire runs fine again.
Does anyone have any tips on alleviating this issue? I have turned the burnback up to 0.30 (It runs from 0 up and I think negative in 0.01 increments) which I think has helped a bit but with the blob still forming it keeps happening. I am using a smaller 3m mig gun with a teflon liner, I could try with my bigger mig gun to test with or use a 0.9mm contact tip but I don't think they will change much. Any ideas of what might help as I'm slightly lost as to what to try next.
Cheers
I finally tested out SiBr MIG with pulse as I have a large overly and build up I need to do for a part and didn't want to have to TIG braze it. I am using a CIGWELD xf252 with a pulsemate using the built in program for SiBr which is for 0.9mm wire with 100% argon. Side note the built in program for 1.2mm SiBr wire is with C10 gas, I didn't realise you would ever run SiBr with anything but 100% argon but I'm really interest if anyone as an opinion on C10 vs 100% Ar with SiBr spray/pulse mig. Also I am using 0.8mm wire rather than 0.9mm wire, I would just buy a 0.9mm spool but at nearly $300NZD for a 5kg spool I really rather use what I have before investing in more, I assume the 0.8mm will be fine expect at much higher amps. So far it seems to be running fine, lays down really well and I haven't need to trim back the volts at all from the program default. I am currently testing it on 4mm RHS tube, with the 4mm SiBr single pulse program and wire and gas as above.
I have run the same wire as just spray transfer with my little unimig viper 165 and while it ran ok, it was rather uncontrollable and I didn't put much time into tuning it as I just ran TIG when I needed to use SiBr.
I have been getting really good results using the single pulse mode. The only issue I am having is I am getting the wire stuck to the contact tip due to a small bead that keeps forming on it (the contact tip). It doesn't affect it when running and it only seems to 'stick to the wire' when its hot. The wire is not burning back/fusing into the contact tip, I think its just sticking to the hot blob that keeps forming on the contact tip as I can just break it off the blob and the wire runs fine again.
Does anyone have any tips on alleviating this issue? I have turned the burnback up to 0.30 (It runs from 0 up and I think negative in 0.01 increments) which I think has helped a bit but with the blob still forming it keeps happening. I am using a smaller 3m mig gun with a teflon liner, I could try with my bigger mig gun to test with or use a 0.9mm contact tip but I don't think they will change much. Any ideas of what might help as I'm slightly lost as to what to try next.
Cheers
