Nnmig welding aluminum pdf

Now, i have to go find that aluminum spar that you use in your wings. Welding steel we often approach welding of aluminum as if it is just shiny steel. How to successfully mig weld aluminum guide millerwelds. Mig metal inert gas welding, also known as mag metal active gas and in the usa as gmaw gas metal arc welding, is a welding process that is now widely used for welding a variety of materials, ferrous and non ferrous. Most welding equipment is designed to weld steel, with welding of aluminum alloys being an afterthought this has begun to change. Gun position and stick out disclaimer due to factors beyond the control of backstreetmechanic, it cannot guarantee against improper. Pdf investigation of aluminumstainless steel dissimilar. What all this means to you is outstanding welding characteristics, spool to spool, time after time. Most welders begin by learning how to weld steel, with some moving on to welding aluminum. For thicker aluminum 12 or more, anywhere from 25% to 75% helium is added. Most welding equipment is designed to weld steel, with welding of aluminum alloys often being an afterthought, although this is changing.

Aluminum in its pure form is a relatively soft metal that has many uses, but which requires the addition of alloys to increase its strength. When welding mild steel you typically use whats called c25 gas 25% co2 and 75% argon. This study evaluates the characteristics of welds resulting from joining dissimilar alloys, steel sprc440 and aluminum alloy 6k21. Aluminum requires some specific changes for welders who are accustomed to. You can count on lincoln electric aluminum mig wire for superior arc stability, weld appearance, integrity and productivity. This will allow the spray transfer process to occur. Mig welder settings charts, guides and tables for steel, stainless and aluminum lincoln mig welding electrode and gas selection chart settings. The essential feature of the process is the small diameter electrode wire, which is fed continuously into the arc from a coil. Aluminum shrinks more than steel during solidification. Note you can download both of these in pdf format right off of. Mig welding aluminum for beginners makemoneywelding.

Welding steel most welders start out by learning how to weld steel. Very often we approach welding of aluminum as if it was just shiny steel. To start the pictures above and below are the manufacturers recommended lincoln welders and miller welding equipment voltage, wire feed speed settings and gas recommendations. For aluminum mig welding you would use pure argon shielding gas. Aluminumstainless steel dissimilar welding processes yield unwanted disadvantages in the weld joint due to the large difference between the aluminumstainless steel.