Learning2WeldBetter
New Member
- Messages
- 3
- Location
- US, Wi
First a little background
Self taught, welding for a little under a year, only mig.
currently doing high speed, assembly line style manufacturing
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So in the attached image the issue im having is what appears to be gas marks in the weld surface, however, the other Welders hooked up to the same gas lines dont have these marks appear in their welds, nor do i get the marks when using their machines, except on rare occasions... which leads me to believe that its a Heat input issue causing shrinkage stress of some sort, as the lines seem to fade the faster i move down the joint, but am then unable to control the bead...
if anyone has any ideas they would be greatly appreciated, this has been driving me up a wall forever now and ive given up trying to guess/check my way through this issue and google isnt turning up any useful information.
Weld pictured was made with the following settings:
0.45 dia wire
23V
300 IPM
98% AR, 2%CO2
(it might be possible that i've got the wrong gas, as the gas main splits before it connects to the other machines in my area, mine is the only one without a valve for switching between our mild and stainless gases, this is highly unlikely, but would result in me using at mixture of 90% AR, 10% CO2, if that makes the results im having make any more sense)
between 3/16 - 3/4 in. stickout (roughly)
if i remember correctly its 309 grade stainless steel (i may be mistaken), and suitable grade filler.
---
The settings brackets im looking at are roughly:
285-315 IPM
23 - 24 V
company policy doesn't allow us to go outside those ranges, (although they have listed amp ranges for the above that are COMPLETELY off of were the machines actually output in the above ranges.)
im not sure if its just the settings that are shooting me in the foot here or what... again, thank you for any ideas or suggestions you might have
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![20151007_030459[1].jpg](https://www.mig-welding.co.uk/forum/attachments/20151007_030459-1-jpg.72317/ "20151007_030459[1].jpg")
in the top weld you can see i was moving left to right, and the "white" marks seem to flare out in the opposite direction of travel, and the same is true of the bottom weld.
Self taught, welding for a little under a year, only mig.
currently doing high speed, assembly line style manufacturing
---
So in the attached image the issue im having is what appears to be gas marks in the weld surface, however, the other Welders hooked up to the same gas lines dont have these marks appear in their welds, nor do i get the marks when using their machines, except on rare occasions... which leads me to believe that its a Heat input issue causing shrinkage stress of some sort, as the lines seem to fade the faster i move down the joint, but am then unable to control the bead...
if anyone has any ideas they would be greatly appreciated, this has been driving me up a wall forever now and ive given up trying to guess/check my way through this issue and google isnt turning up any useful information.
Weld pictured was made with the following settings:
0.45 dia wire
23V
300 IPM
98% AR, 2%CO2
(it might be possible that i've got the wrong gas, as the gas main splits before it connects to the other machines in my area, mine is the only one without a valve for switching between our mild and stainless gases, this is highly unlikely, but would result in me using at mixture of 90% AR, 10% CO2, if that makes the results im having make any more sense)
between 3/16 - 3/4 in. stickout (roughly)
if i remember correctly its 309 grade stainless steel (i may be mistaken), and suitable grade filler.
---
The settings brackets im looking at are roughly:
285-315 IPM
23 - 24 V
company policy doesn't allow us to go outside those ranges, (although they have listed amp ranges for the above that are COMPLETELY off of were the machines actually output in the above ranges.)
im not sure if its just the settings that are shooting me in the foot here or what... again, thank you for any ideas or suggestions you might have
----
in the top weld you can see i was moving left to right, and the "white" marks seem to flare out in the opposite direction of travel, and the same is true of the bottom weld.
