Bad Sheet Metal Weld

If you are burning through the metal you re not moving the torch fast enough and or your welder is set too high.

Bad sheet metal weld. Main things to know before you start tacking sheet metal. In this video im showing you the process i use to do small rust repairs where a complete panel. Well it is not about you and instead about the nature of the sheet metal you are working with. Although the weld burns off the zinc very little if any corrosion resistance is lost especially in thin section sheet metal.

This is due to many factors that came into play. Even professional welders can create excessive heat affected zones and burn through while welding sheet metal. Move the torch faster and or reduce the amp setting of the welder and the lower the wire speed. The end results can help manufacturing operations reduce rework and costs.

Learn why mig pulsed mig tig and pulsed tig are the ideal choices when welding sheet metal. Here s a few tips on repairing rust holes in car body panels. When welding sheet metal the main thing to look out is to prevent warping and burn through. When welding thin metal warping and burn through are common problems.

As the sheet metal used in auto body parts such as cars are quite thin chances are you may end up making a hole or two into the sheet. It requires a lot of experience patience and skill to get the desired results. Thinner sheet metals and alloys such as mild steel stainless steel as well as aluminum. A weld is supposed to fuse two metal parts together by using a similar metal as a filler material a poor weld is not only unsightly but is also unsafe especially in construction where people s lives may depend on it.

Using a thinner wire 0 30 instead of 0 35 will also help. Novice welders need to understand that every material demands a different approach. Sheet metal is a lot thinner than other materials that one needs to weld so a completely different approach is needed. Here we outline some welding defects and how to remedy them.

Problems with welding sheet metal. To reduce the risk of burn through warpage and distortion follow these tips to reduce heat input keep travel speeds high and ensure there are no gaps in part fit up. Porosity is almost inevitable and is affected mainly by the thickness of the zinc coating. Mig welding aluminum sheet metal leaves little room for error.

Learn more at hobart welders. It can happen if you start with a higher power setting right from the beginning. Signs of a bad weld include. Manufacturers of filler metal have come up with special wires that promise to eliminate porosity.