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hiI was wondering what Volts / Wirespeed ppl use for Vertical Solid wire MIGWeave and Stringer? (different temps)a rough idea would be great of what you used/have used, gonna figure it out tomorrow but would appreciate some before handThanks very much in advance23v 240 WS ( more fluid puddle)19v 23 WS ( more metal deposited)any ideas? Thanks in advance
Reply:Hello then3wguy, depends a bit on the type of shielding gas and also the wire diameter as to the parameters. Since you are using solid wire you haven't got the benefit of any puddle formers such as you would with dual shield to assist you in supporting the puddle and allowing it to freeze before it falls out. Surface tension is the only physics in play to help you out here. The voltage will likely need to be low enough to put you into a short-circuiting range, nice sizzling/frying bacon sound. A number of different techniques/manipulations can likely be employed. Stringers, weaves can be used providing they are acceptable if you are welding to a specific WPS. If you are running stringers you can use a triangular motion, step across, push up to the center, bring down about half of the upward push, step across again and repeat. Crescent side to side movement with upward motion can also be used for some folks. J-hook or double-J-hook might work for others. Start by sweeping in a crescent shape from one side to the other and as you go upwards on that side step up quickly and then travel downward and to the opposite side and repeat the motion. The double-J-hook would be similar only you would alternate your sweeping motion when coming back down on the downward part of the stroke. You can probably make these vertical welds with various gas mixtures up to 90 percent argon and 10 percent CO2, much higher argon content and you will likely encounter some real difficulty with the puddle being too fluid. I actually prefer 75/25 Ar/CO2 for this type of vertical solid wire welding. Others will likely have a number of different takes on this subject, so you should definitely listen to what they have to say, the bottom line here is finding something that works for you and meets any code or inspection criteria that might be in place. Good luck and best regards, Allanaevald
Reply:You need to tell everyone the material type and thickness, joint type and wire size.Here is a video showing a common technique.http://www.weldingtipsandtricks.com/...technique.html Ken
Reply:and volt/ws is needs to be a little less for v-up than v-down as well
Reply:.035 solid wirebutt joint3/8 thick bevel (tig root, 7018 hot pass) filled and capped with solid wire75/25 blueshieldIm more concerned with the capThanks for your comments, much appreciated
Reply:Hello again then3wguy, that's an interesting little "test" there. I would be interested to know of the application of this specific challenge? Are you enrolled in a school or training of some sort? Haven't heard of or seen this sort of weld application before. Best regards, AllanEDIT: since you are using .035 and 75/25 I might suggest a voltage of between 17 to 19 and enough wire to have a nice sizzle to the arc.Last edited by aevald; 11-02-2010 at 01:01 AM.aevald
Reply:and we;re using a 37.5 degree bevel on both work pieces with just under a 1/8 gapfeathered edgedoing my eight week 2nd year upgrade in college. school in less then 30min so ill see how it goesThanks for the comments and the time
Reply:A 1/8 inch gap with a feathered/knife edge? Why????If you were running a 1/8 inch land and then a 1/8 inch gap I could sort of see that.Anyway, right out of the Lincoln GMAW Guidehttp://content.lincolnelectric.com/p...ture/c4200.pdfPage 68, vertical up short-circuit transfer fillet joint on 3/8 inch plate using 0.035 solid wire and C25 gas,20 volts, approx 175 amps at a WFS of 250 ipm. Travel speed of 4-4.5 ipm.But that is for a single pass fillet joint with no bevel prep and no TIG root and then 7018 hot passes.Hmmm, Lincoln suggests a 0 - 1/16 inch gap for a butt joint vertical down weld on 1/4 inch plate. Again, single pass. 045 wire and C25 at 200 ipm WFS at approximately 200 amps and about 19 volts at a travel speed of 17 ipm. That is vertical down though. Hot and fast. The best laid schemes ... Gang oft agley ...
Reply:deletedLast edited by aevald; 11-02-2010 at 02:50 PM.aevald
Reply:as it turns out, this post wasnt really needed but was helpful ,, i've written down some temps in my little book incase i need itall i had to do was vert downhand on the cap .. no uphand neededthanks for the comments tho, greatly appreciatedwhere can you get this handbook too?
Reply:Go to the Lincoln website and navigate through to the education portion, there are a lot of articles, booklets, books, etc. there. Some are in pdf. format and downloadable for free. Best regards, Allanaevald |
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发表于 2021-8-31 23:33:31