How To Weld Light Metal. Welding Design Tubular steel should be welded so that the welds are of sufficient size and length that are. Distortion can be minimised by first tacking the metal together at intervals of maybe 20mm and only welding very short sections 20mm length at a time allowing the metal to cool between each section of weld.
According to WeldingHubs you need to make sure the metals are adequately cleaned to prevent the formation of oxide layers. A good heat setting for 18 6011 rods on thin material is about 80-90 amps. When the material is 18-gauge and thicker you may be able to use a030-inch wire.
For a strong weld clean the metal with a degreaser.
According to WeldingHubs you need to make sure the metals are adequately cleaned to prevent the formation of oxide layers. When the material is 18-gauge and thicker you may be able to use a030-inch wire. To weld mild steel choose an American Welding Society classification wire such as ER70S-6 which has a weld puddle that wets out nicely. Everyone is different but those settings will get you in the right ballpark to weld sheet metal.