I might have gone and purchased a new mig that uses actual volts and wire speed settings (metres per minute). I've done a load of googling to try and nail down some figures for 0.8mm or 0.030" wire and it is bloody confusing. Even the settings provided by manufacturers differ by quite a margin. I have highlighted the numbers for 0.8mm wire 75% argon 25% co2 gas.
Random Miller chart
Random Lincoln chart
If we look at the settings for 3/16" steel the Miller shows 18.5 volts and 375 inches per minute and the Lincoln shows 21 volts and and 430 inches per minute. Is this a large difference or is it just compensating a little wire speed for voltage?
This is the manual for a Miller Migmatic 220 ac/dc multifunction welder. The numbers are different again. 19.7 volts 413 IPM
Jody from Welding Tricks and tips reckons these are pretty close for this welder. This is his video.
I'm so confused. I had a fiddle today. 20% co2 80% argon gas. The welder is on a 32amp plug and no extention lead so there shouldn't be problem with the power supply.
Using 6mm steel for a fillet weld I produced a lovely flat weld using 24volts and 11 metres per minute but it seemed miles away from suggested settings and possibly a bit hot. An initial attempt using the Miller Migmatic 220 figures for quarter inch 20.9 volts 11.6metres per minute (456 IPM) gave a peaky weld that didn't wet out as much as I would like. I can produce some pictures tomorrow.
I read another article from Jody who suggested wire speed could be approximated from steel thickness. Basically the amps per thousand rule for metal thickness multiplied by two is your inches per minute for 0.8mm wire. i.e 3.2mm steel is 125 amps which equals 250 inches per minute or 6.35 metres per minute. This seems to match the Millermatic 251 chart. 3/16" on the chart = 375 IPM or half as much again.
Could some of the experienced welders on here suggest some settings to try. Ahem @Brad93 and @Munkul @davidjohnperry (Its a Paton btw) plus anyone else who I might have overlooked. Suggestions for 3mm and 6mm would be helpful plus any other favourite settings. I am thinking more short circuit than spray transfer just to get a feel of the machine. Cheers
Rich
Random Miller chart
Random Lincoln chart
If we look at the settings for 3/16" steel the Miller shows 18.5 volts and 375 inches per minute and the Lincoln shows 21 volts and and 430 inches per minute. Is this a large difference or is it just compensating a little wire speed for voltage?
This is the manual for a Miller Migmatic 220 ac/dc multifunction welder. The numbers are different again. 19.7 volts 413 IPM
Jody from Welding Tricks and tips reckons these are pretty close for this welder. This is his video.
I'm so confused. I had a fiddle today. 20% co2 80% argon gas. The welder is on a 32amp plug and no extention lead so there shouldn't be problem with the power supply.
Using 6mm steel for a fillet weld I produced a lovely flat weld using 24volts and 11 metres per minute but it seemed miles away from suggested settings and possibly a bit hot. An initial attempt using the Miller Migmatic 220 figures for quarter inch 20.9 volts 11.6metres per minute (456 IPM) gave a peaky weld that didn't wet out as much as I would like. I can produce some pictures tomorrow.
I read another article from Jody who suggested wire speed could be approximated from steel thickness. Basically the amps per thousand rule for metal thickness multiplied by two is your inches per minute for 0.8mm wire. i.e 3.2mm steel is 125 amps which equals 250 inches per minute or 6.35 metres per minute. This seems to match the Millermatic 251 chart. 3/16" on the chart = 375 IPM or half as much again.
Could some of the experienced welders on here suggest some settings to try. Ahem @Brad93 and @Munkul @davidjohnperry (Its a Paton btw) plus anyone else who I might have overlooked. Suggestions for 3mm and 6mm would be helpful plus any other favourite settings. I am thinking more short circuit than spray transfer just to get a feel of the machine. Cheers
Rich