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I'm very new to welding, but diving in to get some practice. I just purchased a welding table off craigslist and the legs are 3" angle (1/4" thick). The top is 30x50 - 3/8 thick. I plasma cut some caster mounting plates from 1/4" steel, and was thinking of mounting them like this.Here's a shot of the leg design (before my big cleaning job...)My concern is the MIG welding in the tight corners for the triangular support (45 degree corners on the upright). I'd need to have a much longer wire stickout than I would normally use. I have a Lincoln Pro Mig 180, and my plan was to use .35 wire with a C25 mix. I'd start with the recommended voltage and wire speed from the Lincoln chart then adjust from there. I could switch to flux core to use a narrower tip, which should allow me to use a smaller stickout. I have a torch - I could use to preheat the angle corner if that would help.I'd like some advice - proceed with the current design and either MIG or Flux - OR switch the design? I liked this design because it kept the casters inside the legs, I didn't have to raise the table by the full caster height, AND it didn't require materials I don't have here (like more 3" angle to box the bottom of the legs...)
Reply:The fluxcore option you mentioned would get you in closer (no nozzle), penetrate a bit deeper than MIG, and allow you to finish without any redesign. Since your welder is 220volt, it should be hot enough for adequate penetration without preheat. Clean the surfaces well and bevel the gusset.
Reply:Thanks, I'll give it a shot in the morning!
Reply:With the sort of compressive load this gusset will see, just a little weld on each leg would be plenty. Even if the welds were just a heavy tack at each point, it would do. 1/8" stick electrode? Good Luck
Reply:So what's the problem? I've pulled off welds with well over an inch of stick out. You just got to be real steady. Gas coverage shouldn't be a problem in a corner. If you're really worried about that, stand the table on end and weld it flat. Shielding gas is typically heavier than air.My name's not Jim....
Reply:box the legs with the 1/4 plate you have.. or as denrep said, get rid of that mig and stick weld it..
Reply:I agree with weldbead. Box the leg, it's much stronger that way and a lot easier to weld. I'm guessing your table probably weighs in about 400 lbs. The caster in the picture looks like it's only about 60 lb, might be a little light. You may also want to look for ones that are steel. They don't get a flat spot.Keep the pix's coming.Sign on East Texas payphone: Calls to God 40 cents......it's a local call...
Reply:I'd bet the table weighs about 200 lbs. (or less). Digitalman2112 would know. He's got it on it's side in pic #1.I'll bet your first plan will hold up fine. Just don't try to set a car on it!
Reply:You could always leave your wire speed where it's at and turn up your voltage by a click or .5 if you have read out meters to allow for the loss of current with a longer stickout. As far as stick electrode goes that would be a good option. In my opinion. Looks like fun anyways : )
Reply:Those casters look a little light to me too. If you do much pounding on that table you will probably see them fail, or at least deform. Heavy casters aren't very expensive online - probably worth ordering a few.Hobart LX235Victor 250 Oxy-Acetylene Rig (welding and cutting)Bobcat 773F-350, 1999, 4x4, 16' 10K# trailerOutdoor Wood Burner - 10 cords/year |
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发表于 2021-8-31 23:47:54