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Hoping for suggestions or troubleshooting advice.Been welding with this Vulcan Migmax 215 for over a year without issues. All of a sudden my welds are sh#t. Major porosity in every weld. I've problem solved to the limit of my knowledge and experience, which I confess is limited. Specific details are: .030 solid wire, 75/25 gas, 25 CFH, welding 1/4" clean and shiny mild steel, using the settings from the machine's chart, polarity is DCEPos. Among the things I've tried so far is different material thicknesses, flow rates, and WFS and voltage settings...porosity persists. I've checked to make sure the wire didn't have greasy smudge on it. So this morning it occurs to me that the shielding gas isn't getting to the nozzle. When I pull the trigger on the mig gun, I can hear the gas leaking out of the machine at the drive roller. I've pulled and re-seated the gun lead - no help. The male end of the gun lead that seats into the machine (what's that called??) has two rubber O-rings...they both appear to me to be in good shape. But the gas is definitely spraying out the back end of the driver apparatus. The circle in this pic is where the gas in leaking.
Sorry if the answer is obvious and I'm asking a dumb question. Could it be a bad or missing O-ring?Here's a pic of the male end of the gun lead.
I've never changed a bad liner before - could the liner be bad? What else can it be, and what else should I check?I'd sure appreciate some experienced advice.RedGod bless our military men and women and their families! To all our veterans and active duty military...Thank You For Your Service!Vulcan MigMax 215Hobart Handler 210PrimeWeld Cut50D
Reply:Have you checked the other end of the torch to see if the outlet holes in the diffuser are blocked ?---Meltedmetal
Reply:I would pull the liner and blow the gun out with compressed air. Check all your consumables are in good shape (contact tip, diffuser)Miller Multimatic 255
Reply:
Originally Posted by Meltedmetal
Have you checked the other end of the torch to see if the outlet holes in the diffuser are blocked ?
Reply:The fastest way to check gas at the tip is bucket of water. Just stick the end mig gun in water pull trigger. Dave
Originally Posted by SeenRed
Hoping for suggestions or troubleshooting advice.Been welding with this Vulcan Migmax 215 for over a year without issues. All of a sudden my welds are sh#t. Major porosity in every weld. I've problem solved to the limit of my knowledge and experience, which I confess is limited. Specific details are: .030 solid wire, 75/25 gas, 25 CFH, welding 1/4" clean and shiny mild steel, using the settings from the machine's chart, polarity is DCEPos. Among the things I've tried so far is different material thicknesses, flow rates, and WFS and voltage settings...porosity persists. I've checked to make sure the wire didn't have greasy smudge on it. So this morning it occurs to me that the shielding gas isn't getting to the nozzle. When I pull the trigger on the mig gun, I can hear the gas leaking out of the machine at the drive roller. I've pulled and re-seated the gun lead - no help. The male end of the gun lead that seats into the machine (what's that called??) has two rubber O-rings...they both appear to me to be in good shape. But the gas is definitely spraying out the back end of the driver apparatus. The circle in this pic is where the gas in leaking.
Sorry if the answer is obvious and I'm asking a dumb question. Could it be a bad or missing O-ring?Here's a pic of the male end of the gun lead.
I've never changed a bad liner before - could the liner be bad? What else can it be, and what else should I check?I'd sure appreciate some experienced advice.Red
Reply:I think some leakage to the feeder end of the line indicates a problem in the hose/gun assembly. Gun end is likely plugged.An optimist is usually wrong, and when the unexpected happens is unprepared. A pessimist is usually right, when wrong, is delighted, and well prepared.
Reply:Are ensuring that the power pin is fully seated?If not you could get gas leakage from the drive housing.
Reply:said you've been welding for over a year with no problems. WHAT did you do different recently? If all you've been doing is loading wire, I would imagine that the working end of the whip is plugged with shavings. remove the whip, remove the liner and carefully blow back from the tip end and do the same with the liner, re-assemble checking o ring seals.
Reply:
Originally Posted by BillE.Dee
said you've been welding for over a year with no problems. WHAT did you do different recently? If all you've been doing is loading wire, I would imagine that the working end of the whip is plugged with shavings. remove the whip, remove the liner and carefully blow back from the tip end and do the same with the liner, re-assemble checking o ring seals.
Reply:
Originally Posted by SeenRed
Thanks for all the advice, everyone. ^^ This is exactly what I did…removed the liner and disassembled the gun, blow everything out and put it all back together. The diffuser was pretty plugged up, but cleaned up nicely. Problem solved - no more porosity in my welds…Thanks again to all the tips.Red |
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发表于 2022-9-16 15:52:11