Can't seem to figure out what's going on and why it randomly does this. Welding aluminum. And this randomly happens..
Any insight?
Can't seem to figure out what's going on and why it randomly does this. Welding aluminum. And this randomly happens..
Any insight?
thanks to your picture - i just did...
not a welding expert but i am sure that one that is would have a few questions...
what type of weld process is that? is the material clean? gas flow ok? how thick the material is? what is the weld current? what is the welder model? how it is powered? any problems with regulating or interruptions/transients?
Appreciate your reply. Very new to this forum. That makes sense that they would want that information. I'll post that next thank you!
Is that occurring during the weld, or is that the end of the weld, it's not clear whether you are welding there one continuous bead, or in a couple of halves?
You sure it's definitely spatter (laying on top - so it could be picked off) or is it that actual heated into the metal?
Is that 'trail' related to the robot path at all?
Some further information would be beneficial, but if it was working and now is suddenly producing this, then I would take a video of it for sure and check the ambient stuff like gas flow, torch shroud, weld parameters.....oh and what robot and power source is being used would help too.
To add:
what type of gas?
what type of wire?
To me it looks like a end/start point
Could you provide a better view at that point?
MOM agreed
To me it looks like extinguished wire from maybe the robot leaving after weld completion and not retracting (disconnecting current)....kind of like gun powder residue after it's burned out.
@CWebb Is there a reason you're spamming this thread across multiple sub-forums (here and in the Fanuc forum)? Posting the same thread multiple times is a violation of forum rules.
That one slipped under my radar.
@C Webb busted by our very own Robocop SkyeFire
I apologize for the multiple thread. I am new to this for him and it won't happen again... Okay anyways I got some specs.
1. That always happens at the very beginning of the weld path where soot is already present. My program follows a path vertically, then once it gets to the bottom it comes back up to the original start point and goes in the opposite way.
2. Yes material is thoroughly cleaned.
3. Not liquid
4. Mode 76 pulse 5
5. Feedback arc current 78.5 amps
6. Feedback arc voltage 26.7 bolts.
I have included a close up picture of the problem...
Take this with a grain of salt; i feel that after close up picture it looks like the black is following the grains that's inside the material, some type of electrical field is quickly flashing at the beginning of the weld and litteraly burning the soot, that was created from the first weld, directly into the material.
another photo
One last that is zoomed out a little bit.
This is the part. Welds look fine... But in the middle there is the beginning of the two programs. One goes down hill, then comes back up and welds the top portion..
That weld looks shite (sorry for being blunt) as it is quite clear there is weld on weld in the middle (lack of penetration at the termination weld positions).
The last picture, doesn't look anything like the problem weld images, as though they are from somewhere else:
- You can see the termination points in the middle.
- The overall welds look very clean, shiny and polished in comparison to the problem weld images.
- Can the weld not be accomplished in single pass.
- I would be looking at the crater settings for the weld termination (slow down sequence).
- Do you clean the shroud between welds.
- I would be looking at the physical torch position at the weld termination for proper shielding flow and coverage.
- I would also reverse the program and see what effect that has, if any.