Mig feed rate too high ? How do I know ?

[bitternut]

Don't know where you got your info about tip size but I use the same size tip as the wire size ( .030 tip with .030 wire, .035 tip with .035 wire, etc. ) when using solid wire and flux-core. If you are pushing the bead with flux-core you are doing it wrong. With flux-core you drag, with solid wire and gas you push. I have run many pounds of both wire with no problems using the above method. Works for me.

 

[bitternut]

Don't know where you got your info about tip size but I use the same size tip as the wire size ( .030 tip with .030 wire, .035 tip with .035 wire, etc. ) when using solid wire and flux-core. If you are pushing the bead with flux-core you are doing it wrong. With flux-core you drag, with solid wire and gas you push. I have run many pounds of both wire with no problems using the above method. Works for me.

 

[Jagmandave]

Makes sense to push the weld with gas, the gas flows out ahead off the puddle, keeping things clean as well as preheating.........

 

[Jagmandave]

Makes sense to push the weld with gas, the gas flows out ahead off the puddle, keeping things clean as well as preheating.........

 

[mrcaptainbob]

I had that problem quite a bit. The problem was always that dang tip. The wire would scrape enough going through that the build up would eventually seize the wire. Started off replacing tips, but then started pulling the old wire out and cleaning out the old tip. Progressed then to a Dremmel drill and opened it a bit to maybe .04 + for the .035 wire. Haven't had a problem since. Was told the welds wouldn't be 'straight' if the hole was too large and allow the wire to wobble. Figured that point would never show with my technique anyway! /forums/images/graemlins/smirk.gif

 

[mrcaptainbob]

I had that problem quite a bit. The problem was always that dang tip. The wire would scrape enough going through that the build up would eventually seize the wire. Started off replacing tips, but then started pulling the old wire out and cleaning out the old tip. Progressed then to a Dremmel drill and opened it a bit to maybe .04 + for the .035 wire. Haven't had a problem since. Was told the welds wouldn't be 'straight' if the hole was too large and allow the wire to wobble. Figured that point would never show with my technique anyway! /forums/images/graemlins/smirk.gif