Re: Welding, what do you know?

Posted by shinyribs on
URL: http://vintage-and-classic-hondas.81.s1.nabble.com/Welding-what-do-you-know-tp3416351p3417124.html

Im sure that you know what ac and dc are.In relation to welding think of it like this.Ac current alternates and dc is direct.If you see ac on a sine wave graph,or whatever its called,it looks like a roller coaster.Up and down,up and down.Dc does not.Straight line.  A dc welder will deliver a smoother weld and more consistent.The consistency is what makes it so much easier to weld upside-down or in a straight up and down position.The ac welder wants to "cut off" between each cycle off the up and down sine wave(It doesnt really cut off,just trying to explain) and will let the molten puddle of metal that you are currently working sort of "release" so to speak.causing it to drop or run downhill.With dc it just plasters it right on there baby!  
      There are instances where you need ac.If you are TIG welding aluminum,it will only work on ac.
     Again,great point to mention Daddy-o.