matl thk, fillet weld size, surface prep, position?
In photo 3, I really don't see adequate fusion.
Hello MRWeldSoCal, from what I am seeing as general parameters, the rod is being run on the upper limits of it's recommended amperages, not that this is necessarily the issue causing the trapped slag, however, could have a contributing influence.
Question? is the joint being welded in the level position or slightly uphill? Hopefully yes, if not, you could possibly experience the slag being run-over and trapped at the root of the deposit. Also, rod angle, is it being run with at least a bit of drag angle as opposed to straight in or pushed? Some of the time a slightly exagerated drag angle may assist with prevention of slag entrapment. Carerful attention to arc length will also help to ensure avoidance of bead roll-over on the bottom toe or other slag entrapment issues from occuring. Need to have enough arc length to prevent the weld slag from being influenced by the end of the electrode(mis-directed, drug off to one side, or other abnormalities). By the look of some of the sectioning there also appears to be a possible work angle issue with the rod as well as the center of the electrode possibly not being directed at the line of the plate intersection point. Just a few thoughts for your consideration. Will be interested to hear from others and also any results that you come up with. Best regards, Allan
Thank you for your input, I will be cutting test Samples tomorrow to do some re-testing. It was in the flat position and certaily on the edge of the electrodes capable limits. The arm angle was very verticle and I believe that helped contribute to the undercut at the top. I just took a photo with a weld gage and am going to attach it to this thread.
I believe Allen has some excellent suggestions esp the rod angle needing to be dragged and pointed back into the puddle.
Btw, does dwg or job require a full 1/4" fillet weld?
So here are the RE-TESTs for our welder, I changed it from the 1/8th initial rod to a 3/32 for the root pass, then a 1/8 cap pass. I turned the heat up on the 3/32 from 95 amps to 105 amps and it melted greatly. Thank you all for your 2 cents!
Hard to tell from the picture but is that small indication at the root now on the acceptable side of the root? It looks like it is by scribing an imaginary line on my computer monitor.
I is on the acceptable side of the root yea, I led with the 3/32 this time for the root, and did a cap with the 1/8th inch filler
Looks like you have got it worked out then...good job
