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Finally was able to move up from a chinese 90 amp flux core welder to a Hobart Handler 140. Holy crap! what a difference. I'm still running flux core and the reduction in spatter with this machine is amazing. I'm still running the spools of 0.035 wire that I already had for now. Once I use these up, I will buy a big roll to install. I know I will most likely do a side x side comparison but I thought I'd ask the pros in the mean time. What are the differences in 0.030 and 0.035 wire? Does the current flow through one better than the other? Giving one better penetration? Do you get a different or better weld with one over the other? Should I try to use 0.030 for really thin material and the 0.035 for the materials on the upper end of the welders capabilities? Do you have a smaller puddle with the thinner wire making it preferrable for smaller projects? Any input you guys have discovered or observed with your experience would be greatly appreciated.
Reply:0.035" vs 0.030". The larger diameter wire will carry more current, allowing you to weld thicker pieces of metal together in a single pass. Yes, the smaller wire will work better for thinner material, all other things being equal. Larger wire will produce a larger puddle, and enable you to deposit more weld metal per minute than the smaller wire, at the same current(amperage).This is assuming your welding power supply has more capability to supply current. Check the filler metal manufacturer's websites for datasheets for self shield fluxcore wires that come in those diameters. The datasheets should give you recommendations for voltage and wire feed speed. And you should be able to see the amount of current used at those settings. If your welder can supply the max current recommended for the 0.035" wire, then you could see some benefits from switching. It's a bit of guess work to figure out the voltage and WFS you're getting from a tapped machine like a handler 140. You can estimate from the max voltage/wfs info in your owner's manual. Or you can measure the voltage with help from a friend and a voltmeter. Check WFS by running the trigger for 10 seconds at a few different settings on the machine. Just measure the amount of wire that comes out of the gun in that time and multiply by 6 to get WFS in inches per minute.With all this info you can make some educated guesses about whether or not the larger diameter wire will benefit you or not.Overall, unless you're trying to weld the thickest material you can with a small machine, I doubt the 0.035" wire will make that much difference. It might get you up from welding 3/16" steel to 1/4" steel in a single pass. Getting the most from the machine probably depends more on your skill, than the diameter of wire you chose.Benson's Mobile Welding - Dayton, OH metro area - AWS Certified Welding Inspector |
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发表于 2021-9-1 00:16:14