Been welding for about 40+ years, all types, all positions, so I have a "little experience" to draw from. [certified aerospace systems welder for a time]
You said all the magic words for trouble getting a good weld. Flux core wire, few amperage selections, few wire speed selections, thin material. All of those factors work together to work against you. Likely add to that, the weld area was not cleaned to bright metal, so you had some oxidation to overcome which further challenged the flux core wire. You may have been more successful with the next size heavier wire, which would have let you add more metal to the weld puddle. Or, you may have been able to overcome that limitation by using a "weaving motion" which widens the weld puddle and doesn't let the concentration of heat build to the point of yield of the base material, rather than rely on the feed of wire to stack metal in a small location [which allows a concentration of heat buildup in a localized area, thus burn though], Welding rule of thumb.. thinner the material, more precise heat and fill rod control, more expensive the welder. Bring it a little closer to the computer so I can see what it's doing :)). Grant... On Sat, Apr 6, 2013 at 6:43 PM, Allan Streib <str...@cs.indiana.edu> wrote: > Had to do some repairs on the kid's trampoline today. Simple welding of > some repair plate over a broken weld where one of the legs joins the > frame. > > Using my HF welder, which has only 4 current settings but variable wire > speed control, I had some problems. Seemed to have trouble finding a > current and wire speed that would penetrate without blowing through. I > finally managed by doing a series of tack welds and then filling in, but > it didn't look very good when I was finished. > > The wire I'm using is the flux core that came with the welder, which is > probably the cheapest Chinese wire they could find, so that may be part > of the problem. > > Any advice for next time? > > Allan > -- > Allan Streib > > _______________________________________ > http://www.okiebenz.com > For new and used parts go to www.okiebenz.com > To search list archives http://www.okiebenz.com/archive/ > > To Unsubscribe or change delivery options go to: > http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com > _______________________________________ http://www.okiebenz.com For new and used parts go to www.okiebenz.com To search list archives http://www.okiebenz.com/archive/ To Unsubscribe or change delivery options go to: http://mail.okiebenz.com/mailman/listinfo/mercedes_okiebenz.com
