I have a Hobart 2510 MIG welder. It goes up 32 volts on the dial. Does that make it a 300 amp class machine or a 250 amp class machine?Is 32 volts enough to play with spray transfer using .035 wire? I have a C25 gas which I would like to refill with a spray transfer gas. What will be good? C10, 98/2oxgen. Can I use the same bottle? I am thinking of buying a CO2 bottle to use for MIG which will free up my C25 bottle. Can I still use C10 for MIG welding?I am a hobbyist which has owned this welder for over 5 years. I would like to expand a bit. IS spray transfer worth it?Hobart 210 MVPHobart beta-mig 2510 Mig welderHobart 12ci Plasma cutter Victor OA Welding/Cutting Rig Linde 295 amp Stick welder bought 30+ years ago
Reply:32v is plenty to spray transfer with.035 wire. I would probably go 28-30V . C25 can spray transfer but is not optimum. C10 would be about perfect. I am not familiar with the 2510 so I can not tell you if its 300 amps or not. 250 amps is enough to spray with .035 anyway. My MM200 goes to about 275 amps and 30 volts. If you do a lot of heavy steel weldments spray will be beneficial but I do not think you will use it enough to be worth it as a hobbyist . Spray is primarily flat position and vertical down. You will also need a fairly heavy gun if you plan to do a lot of it. I did it some using a 200 amp gun but not for hrs at a time. It puts out a lot of heat. If I was doing a steady diet of weldments out of 3/4 steel I would consider it . I do them once in a while and I still use C25 gas because I do not do enough to set myself up for that process to be optimum. You might need a couple extra volt to go into spray with C25 but it will still do it. If my memory serves me correctly .035 can go into spray at around 26volts , with C25 it will not go completely into spray until around 28V. You can go higher Volts as long as you have the amps to support it. My MM200 is at its peak in spray transfer with .035 at about 30V using C25 . It would be at lower voltage if I was using C10. When you get up in the 275-300 amp range with spray you better have some good thick gloves on and protect you chest in the V area that is bare between the bottom of your helmet and your shirt or jacket. I have a leather flap pop riveted to the bottom of my helmet that hangs down about 4" to protect my neck.
Reply:OK I looked up your 2610. It looks like it maxes out at 260 amps 30V . I think with C25 you are going to be maxed out at 28V . you might be able to do 30V for a short time. Remember you only have 35% duty cycle maxed out so you will need to keep a close eye on your welding time.
Reply:It has 32 volts on the knob. What are you looking at?I have a picture of the manual I have which shows 32 volts I think unless I am reading it wrong.
Attached Images Last edited by coxhaus; 11-26-2018 at 12:19 AM.Hobart 210 MVPHobart beta-mig 2510 Mig welderHobart 12ci Plasma cutter Victor OA Welding/Cutting Rig Linde 295 amp Stick welder bought 30+ years ago
Reply:
Originally Posted by coxhaus
I have a Hobart 2510 MIG welder. It goes up 32 volts on the dial. Does that make it a 300 amp class machine or a 250 amp class machine?Is 32 volts enough to play with spray transfer using .035 wire? I have a C25 gas which I would like to refill with a spray transfer gas. What will be good? C10, 98/2oxgen. Can I use the same bottle? I am thinking of buying a CO2 bottle to use for MIG which will free up my C25 bottle. Can I still use C10 for MIG welding?I am a hobbyist which has owned this welder for over 5 years. I would like to expand a bit. IS spray transfer worth it?
Reply:
Originally Posted by coxhaus
It has 32 volts on the knob. What are you looking at?I have a picture of the manual I have which shows 32 volts I think unless I am reading it wrong.
Reply:Your unit looks to be basically an older Millermatic 250 with a Hobart wrapper. As pointed out above the voltage values on the dial are more than likely rough open circuit values. Its been a while since I maxed out the older MM 250 , so I don't remember if its capable of 30 volts @ 200 + amps. It definitely will hit 28 volts though. The old Millermatic 250 was/is a finnicky spray arc unit. For spray 98/2 oxy seemed to be the best choice.For home used though there is probably no reason to go with anything other then C25. With C25 and solid wire you can put down some pretty sound welds in the 24 - 25 load volt range @ around 200 amps on 1/4" - 1/2" thick material.With C25 there is also the option of going with a gas shielded fluxcore wire on thicker material. As long as you going with a wire designed to run out of position, this would be a good choice for out of position welding on thicker materialESAB Migmaster 250
Hobart Ironman 230Multimatic 215TWECO Fabricator 181i & 211iHH125EZ - nice little fluxcore only unitMaxstar 150 STH - very nice
Reply:80/20 is the minimum for true spray transfer but most folks will recommend 90/10 gas.JasonLincoln Idealarc 250 stick/tigThermal Dynamics Cutmaster 52Miller Bobcat 250Torchmate CNC tableThermal Arc Hefty 2Ironworkers Local 720