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I did some vertical up welding today and was somewhat happy with the results. Below are photos of 3" vertical up welds on .083 mild steel using .030 solid wire.I have also included a photo of the back side to show the heat.They seem to be pretty strong and lots of heat (maybe too much) on the back side. I think I have an idea of what I was doing wrong, but I would like to hear it from some experts.Thank you again for all you help!Mike Attached Images
Reply:lookin pretty good, but room for improvement. try reducing heat, good luck chris
Reply:looking good!!! but as with any"practice" i would try lower voltage and the same wire speed and also same voltage lower wire speed. you'll be able to tell what is wrong (temp,wire size,etc.)it's all practice till it counts imho i would use .o23 wire for .083 tube but thats just me! i don't have a spunky username just what it is, me!
Reply:I forgot about trying some .025 wire. Thanks for the idea; I think that will help with the heat build up.I also think I was moving in an upward Z motion instead on an upward side to side which is what gave the bead that funny shape.I have a new 3/8" nozzle and tapered tip ordered which should give me more visibility on the weld pool. I really did not have a good view of the puddle this time and was more or less winging it. I was only able to look down and try to spot the puddle.Quick question
When I was welding I was using an upward side to side Z movement holding the gun straight on. Would it be better to actually twist the gun left to right instead of moving it side to side so more arc goes into the metal? Know what I mean?Thanks again!Mike
Reply:Hey Malich,Looks pretty good. I can see where you had that side to side thing going there. Staying with what you have there, if you could have tightened up the back and forth as far as how far up you move with each weave, more like the second pic. Like was mentioned if you got there with .030 on 080 wall you were doing pretty good to start with. While with the .030 you may want to test the extremes just so ya know the results then you can sorta work out the details. Verticle up on 080 with 030 won't be on your door chart so just as well give her heck while your there. For me that would have been a lower voltage higher wire feed setting. Higher voltages tend to help wet out the puddle, which in this case isn't necessarily what you want. You want a faster freeze. I don't know if you've ever reloaded before but in that arena we make 'recipes' as in write down what works best. Nothing wrong with that here either. Have an extra sheet or scribble on your door if you want. For me that would have been 3.5 and 60 with my mm175 using the same wire. On the flat I would run about 4.5 and 50. Vert down maybe 4 and 55. See how it goes? Problem with low voltage and high relative wire speed is when you do burn through it's generally a good shot. Big hole!!!!! 'Course the mm175 is slightly different than some others on the settings.When I was welding I was using an upward side to side Z movement holding the gun straight on. Would it be better to actually twist the gun left to right instead of moving it side to side so more arc goes into the metal? Know what I mean?
Reply:Thanks for the info Sandy,I decided to go with the vertical up welds because this is going to be a sub frame I am re-welding into my drag car. I did some destructive tests on vertical down welds while on Gen power and they failed, and besides I wanted a bit larger bead on the metal. So I opted to learn vertical up welding and I actually like it a lot.I am going to try some .025 this week and work from there. I did adjust my settings from D 5.5 (vertical down) to C 3 (vertical up) and it seems to have a nice arc and sound. When I switch from side to side, do you recommend counting to one or two before moving? I was trying to stay on each side for 1 second and then move to get some heat on the sides. On the second weld I think I tried 2 seconds.Thanks,Mike
Reply:i agree with SANDY, a cheat sheet is well worth all of your effort to see what the machine likes!saves a load of time and effort more less the "expense of trial and error".good luck and keep us posted i don't have a spunky username just what it is, me!
Reply:I'm glad you are going for a weld that is sound rather than the easy route of pretty. No matter what the method, vert-up or down or cross ways it's gotta be solid.When I switch from side to side, do you recommend counting to one or two before moving? I was trying to stay on each side for 1 second and then move to get some heat on the sides. On the second weld I think I tried 2 seconds.
Reply:I noticed that you lose fusion on one side of your joint periodically. The side that is the top off the tee will absorb more heat than the tube that forms the leg of the tee. One way to counteract this is to hesitate just a bit longer on the piece that absorbs more heat. General shape looks good.
Reply:Hey everyone,I did 8 vertical up welds today on .083 mild steel using .025 solid wire, I have attached a photo of the last weld which seemed to be the best. I did stop and restart and that does not look so good, but the weld starting from right going left turned out pretty good.I found out I needed a little more right to left movement and did a quick 1-2 count from side to side with less upward Z movement this time.Mike Attached Images
Reply:Hey that looks like a little better match for you, doesn't it. How do you feel about fusion? I like the fact that it looks much tighter now, less internal and external risers. I like the looks of the bead to the left in the pic. It's a little wider and porportionately lower. That's kinda the look you're going for.
Reply:Hey Sandy,Actually the bead on the left I started after the first and I was moving a bit slower and thought it was kind of thick. There appears to be good fusion and lots of heat on the insides. No minor burn through this time towards the top with the smaller wire.Personally I would like a little larger bead such as the left, but for that I feel I was moving to slow, maybe I need a tiny bit more left to right movement???Thanks again!
Reply:Personally I would like a little larger bead such as the left, but for that I feel I was moving to slow, maybe I need a tiny bit more left to right movement???
Reply:hey Malich. you can also try to run a straight root pass before the second weave pass if you are looking for a heavier bead.jake
Reply:Jake,Would you make the second pass up or down??
Reply:Hi Sandy. I would run the second pass uphill. That is how I learned and welding in industrial chemical plants we had to run all of our passes uphill. I have seen welding inspectors throw welders of jobsites because they were running downhill, but for home projects i see nothing wrong with running downhill if you can do it. If you are looking for a lot of strength i woud say definetly run uphill.jake
Reply:Another thing, if you are able to run these welds in a horizontal position, stringers will be stronger than vertical weaves.jake
Reply:Originally Posted by j8khansenHi Sandy. I would run the second pass uphill. That is how I learned and welding in industrial chemical plants we had to run all of our passes uphill. I have seen welding inspectors throw welders of jobsites because they were running downhill, but for home projects i see nothing wrong with running downhill if you can do it. If you are looking for a lot of strength i woud say definetly run uphill.jake
Reply:QUOTE : I'm glad you are going for a weld that is sound rather than the easy route of pretty. No matter what the method, vert-up or down or cross ways it's gotta be solid.That makes a lot of sense to this beginner as well .. And to relate it back to reloading / shootin .. I chamber my own barrels and there is as many opinions onwhats the best way to set up and ream as there is calibers .. BUT... the bottom line is still the same .. how does it shooton paper .. I tried an vertical pass uphill on a flat .. I tried that upside down "U" pattern asI worked my way up .. Had what looked to be almost full penetration .. after I clean it up, I'll post the picsfor some of those helpful opinions .. as I have only been FCAW welding forall of about 4 days LOLI read somewhere about a "christmas tree" pattern to weld uphill and also about the inverted U .. so I opted with the "U" ..Thanks for all the good info folks ..Randy
Reply:i'm just gunna take a guess and say that that is S6 wire?.. if so i would put the voltage @ 19 volts and the wfs @ 175.. it worked for me but my i was using 0.35 |
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发表于 2021-9-1 00:19:53