Pulse Mig Welding Aluminum Settings

Aluminum should be thoroughly cleaned prior to welding including the removal of any lubricants from the material.

Pulse mig welding aluminum settings. Finding the settings for aluminum welding on your mig. Productivity increases with improved deposition rates using ac aluminum pulse gmaw waveform technology are. In other words no matter how you set the controls the machine circuitry is rapidly making adjustments on the fly its not as simple as just setting voltage and wire speed. If welding out of position you will want the wire feed speed fast enough to keep the weld full of metal at a fast crackle.

Aluminum mig welding settings. The viscosity is beneficial when using spray or pulsed transfer for all position welds pulsed mig ideal for applications 0 040 to 0 100. Over 0 100 traditional mig spray transfer is beneficial in contrast to mig welding steels the pulsed mig process provides real welding benefits. In most cases it will take 21 to 23 volts to get the arc to spray transfer.

This may seem like common sense but many fabricators get hung up on purchase price vs. Life cycle costs or they try to weld aluminum with the same processes and systems used for steel. Ac aluminum pulse gmaw brings features that cannot be realized with standard dc pulse mig welding. Built in mig and pulsed mig programs automatically set the optimal parameters for a variety of wires and the system simplified the welding operation by using synergic pulsed mig controls and profile pulse.

The settings needed to mig weld aluminum are pretty much the same for all positions. Pulsed mig is beneficial on all aluminum applications. The ac pulse process reduces the heat input by focusing the energy away from the base plate and switching the polarity of the arc. Oxide removal should be done after degreasing using a stainless wire brush.

To mig weld aluminum thinner than 14 gauge 074 inch it may be necessary to use specialized pulsed mig or ac tig welding equipment. Mig welding pulse settings are pretty confusing and one of the reasons is that a lot of mig welding machines capable of pulse settings use what is called a synergic control. Matched with d 74 mpa plus dual wire feeders the system allows welders to quickly switch between two metals typically aluminum and then a second wire such as stainless or silicon bronze. A pulse spray welder is used for welding of thin aluminum 18 gauge or less.