Blowing Holes In Sheet Metal Flux Welding

If it s blowing through quickly then maybe the power is set too high on the welder.

Blowing holes in sheet metal flux welding. Maintain a travel speed that allows the weld metal to fill the melted out areas of the base metal completely or if you are using a weaving technique pause at each side of the weld bead. I have a welding addiction the only stupid question is the one you didn t ask. If your welding wire is too thick it will take more heat to melt the wire than the substrate and can make it even more prone to blowing holes in the panel. Stick welding burning holes through thin metal 05 15 2011 10 32 am.

Reducing the power and wire speed might help although the metal needs to be completely shiny and clean for low power stuff to work at all. For thinner gauge sheet metal like 18 or 20 gauge we suggest 023 6mm wire in your mig welder. That way you dont erode the metal away. Try going for a wire of 023 inches when welding sheet metal.

Its also important to have it very clean i use a wire wheel etc to clean prior to welding. On sheet metal you always stitch weld to prevent blowing holes and warping the metal from overheating. 2mm is the thinnest rod i have available i am in brazil. Basic guide to flux cored arc welding.

Make sure to use an electrode wire that is thinner as it uses lesser heat and prevents blowing holes on to the sheet metal. If you are butt welding try to minimise the gap between the two sheets. Try 6011 instead of 6013 x3 32 6013 is wrapped with more flux that rod boarders. This machine is one of the most basic welders available on the market today.

I keep blowing through my thin sheet. Am i just doing it wrong. Keep the stick out short stickout of your mig wire is important when welding any type of metal but especially sheet. Hello and welcome to the slo makerspace guide to flux cored arc welding.

This instructable is intended to teach you how to use the lincoln weld pak hd flux cored arc welder. For sheet metal i use ine welding wire and it is just as good as their flux cored wire if you want you can grab one here. To fix that hole and to do any more welding with out blowing through you could clamp a copper backing bar to the backside of the weld. This works as a backing bar obviously and also as a chill strip that helps conduct heat away so you don t blow holes in it.

Andy gives helpful insights and tips to mig weld thin sheet metal.