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Tool Talk Discussion Board |
Re: Alumaloy
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Posted by T_Bone on June 10, 2003 at 20:08:58 from (65.58.129.174):
In Reply to: Alumaloy posted by TwinCreek on June 10, 2003 at 07:15:09:
Hi TwinCreek, Welding Aluminum is not all that hard but you do need to use a few special techniques. For 1/8" thick AL and up electrodes work well. For 1/8" and thinner, Tig, Mig or Oxy/Acet works well. Straight LP does not have enough BTU for AL gas welding but Propaylene does. Clean the area to be welded with a new SS wire brush to "white" metal. Anytime the molten puddle does not act correct, it's time to clean again. AL will get a surface black oxide (contamination) that needs to be removed during welding. I have good luck with 1/8" AL electrodes with Ocy/Acet with neutral flame on lite gauge SM. I use it with the flux on the rod. When the molten puddle is at the correct heat for adding filler metal the surface will have wrinkles. It's very close at this point to complete burn thru so timing is critical. AL electrodes are expensive no matter what brand you buy. I have not found one brand best over the others. T_Bone
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