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Unread 09-16-2013, 08:24 AM   #1
ArmyFO13F
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axle welds

I am setting up an axle and doing the welds myself. I have nice welds for a beginner but how can I ensure they penetrated the axle and mounts enough? I used a flashlight to look inside the tubes and it seems I have good heat penetration. I am using lincoln 035 flux core with a 90 amp welder. Would it be smartest to tack them on then get them professionally finished?

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Unread 09-16-2013, 08:31 AM   #2
Ironworker709
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Quote:
Originally Posted by ArmyFO13F View Post
I am setting up an axle and doing the welds myself. I have nice welds for a beginner but how can I ensure they penetrated the axle and mounts enough? I used a flashlight to look inside the tubes and it seems I have good heat penetration. I am using lincoln 035 flux core with a 90 amp welder. Would it be smartest to tack them on then get them professionally finished?
90 amp welder is not gonna get it...tack and take to someone who has a more sufficeint machine...
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Unread 09-16-2013, 09:22 AM   #3
jason280
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I agree with the post above, 90 amps just isn't "hot" enough for axle work. Even 140a isn't ideal, but can be made to work in the right hands.

I would go ahead and tack everything in place, and let someone with a larger machine finish the welding.
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Unread 09-16-2013, 09:42 AM   #4
ArmyFO13F
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Next question, I have welded the spring perches on. Can I leave them on and have the pro weld over them or should I remove them and start over?
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Unread 09-16-2013, 11:02 AM   #5
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You probably can. However, it would definately help to run a grinder over your welds to knock them down.. or even a cutoff wheel to gouge them out a bit.
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Unread 09-16-2013, 11:17 AM   #6
ArmyFO13F
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Would a 170a welder do the job? I would really like to do this build on my own and learn things in the process. Thanks for all the helpful input so far guys.
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Unread 09-16-2013, 02:31 PM   #7
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Quote:
Originally Posted by ArmyFO13F View Post
Next question, I have welded the spring perches on. Can I leave them on and have the pro weld over them or should I remove them and start over?
It really depends on how good the welds are. The problem with most of the smaller machines is they don't have the heat to get good penetration, so while they may leave a decent looking bead, it will have very little penetration. Most shop guys, especially speaking from a liability standpoint, won't weld over old beads, so they will probably be some grinding involved. I know I wouldn't want to risk welding over a questionable bead, as there is too much chance for inclusions, etc...

As far as your other question, a 170a machine should provide enough heat. It still comes down to ability, though, but this is a great chance to work on your welding...just get in some practice!

Remember the old saying, your either a good welder or a good grinder!
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Unread 09-16-2013, 03:10 PM   #8
ArmyFO13F
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Thanks for the tip. I will definately take off the perches and start over with a stronger machine. Gives me a reason to buy a torch anyway.
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Unread 10-01-2013, 07:38 PM   #9
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use a ac/dc stick welder and use 7018 rod
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