How To Spot Weld Sheet Metal With Mig

To weld sheet metal with solid wires use electrode positive ep or reverse polarity.

How to spot weld sheet metal with mig.

7 5mm is a reasonably good hole size for 0 8 or 1 0mm sheet. Mig welding is one of the most appropriate methods used for sheet metal. This enables you to take control over the. I like to try and center the weld in the flange or weld seam.

Holding the tip too far from the surface will cause the wire to have to come out too far to touch the metal. The two most commonly used methods for welding sheet metal are mig and tig methods. This process is fairly simple but there are a few tools and tips that help you get really nice welds that closely resemble and original spot weld. You can than take a drill or a metal punch to make holes in the top layer of the metal.

Forget the larger 1 8 inch tungsten electrode and use a smaller one. Don t forget to mark the. Then clamp this sheet onto the back sheet. This drops the voltage and heat of the weld arc and causes the welds to sit proud no penetration on top of the metal.

September 10 weldpros mig welding for sheet metal. Applicable 10 off coupon code. Keep the stick out short stickout of your mig wire is important when welding any type of metal but especially sheet metal. Buy the kit here.

Start off by drilling 7 5mm holes in the front sheet of metal at a spacing of normally 25mm to 40mm or whatever the original spot weld spacing was. The main reason to use a smaller diameter wire is that it takes less heat for melting and hence the metal around the weld is not heated to a very great extent. For mig welding sheet metal it is often recommended to use an electrode wire of the smallest diameter to prevent burn through and warping. This method is favorable as it leaves room.

Don t attempt to weld thin materials like sheet metal with flux cored wires which put more heat into the base metal. Start by marking out even spacing of where you want your spot or plug welds on the metal. Tig welding sheet metal. Below we show you the process for making a spot weld with your mig welder.