Am i pushing argoshield light too much? edge fusion

[MartZ0r]

hi fellas.

been welding 5mm to 5mm and some 3mm tube to 10mm plate, really struggling with penetration. its very hit and miss. i have attached a picture of just one of the welds and you can see it's not fused.

Machine, butters AMT 241, Gas shielded light at 20CFM MAX voltage (6). not sure on wirefeed rate i will work it out later if you guys wanna know it.

i have also had this problem on 5mm to 5mm fillet welds. maybe time to move up to a 20% argon blend?

 

[Welderpaul]

I think your barking up the wrong tree changing the gas; either your machine doesnt have enough power and/or technique is not right.

 

[backpurge]

Gas is fine for this thickness material

 

[BrokenBiker]

nothing wrong with the gas

 

[MartZ0r]

Strange, will have to check it out post some more pics up. i have never had this trouble at work but we have 320amp 3 phase machines, so i probably would normally have the current much higher.

 

[MartZ0r]

right done another test, same settings. perfect visual fusion. no settings have been altered, there is also less spatter.

i pulled the side cover off and turned the machine on and the rectifier fan is not working, i recon maybe the rectifier had over heated and lost it's power due to fan/duty cycle limits?

when i did this weld the machine hadn't done any welding prior.

 

[atomant48]

What is it out of interest - that's a pretty meaty piece of plate!

 

[MartZ0r]

sorry for late reply, it's just a end bracket for a roll cage. it's a tight press fit so that helps it's strength along with the weld.