![]() One way to check your MIG welding settings is by examining the weld bead. 030-inch wire, multiply by 2 inches per amp to find the wire feed speed in inches per minute (ipm). If a manual or weld specification sheet is not available, use the multipliers in the following chart to find a good starting point for wire feed speed. A speed that's too high can lead to burn-through. Wire speed controls amperage as well as the amount of weld penetration. Too much arc length also introduces the possibility of undercut. On the other hand, a longer arc (more voltage) produces a flatter, wider bead. A short arc decreases voltage and yields a narrow, ropey bead. There is a relationship between arc voltage and arc length. A voltage midway between these two points provides a good starting point. Then, start welding again and have an assistant increase the voltage until the arc becomes unstable and sloppy. If no chart, manual or specifications are available for setting the correct voltage, you can try this: While one person welds on scrap metal, an assistant turns down the voltage until the arc starts stubbing into the workpiece. Voltage determines height and width of the bead. Since you don't want to change wire, select one for your most commonly used thicknesses. Select proper wire size according to amperage.001 inch of material thickness requires 1 amp of output. Material thickness determines amperage.When good results are achieved, record the parameters. Joint design, position and other factors affect results and settings. The following basic MIG welding settings are for welding steel with solid wire. Most companies also offer their manuals online. It contains important information about proper operation and safety guidelines. Regardless of your machine choice, read your owner's manual. To determine which welding machine best fits your needs, watch Which Welder is Right for Your Home or Shop or download this guide. This allows you to focus on proper technique. ![]() Some welding machines include technology advancements, such as Auto-Set™ technology, which sets optimal parameters automatically based on material thickness and wire diameter. If, however, you’re looking for a machine with multiple welding capabilities, we recommend multiprocess welders like the Multimatic® 215 and Multi MIG welders such as the Millermatic® 211 and Millermatic 141 are ideal for the occasional welder. Good equipment makes MIG welding easier, while poor equipment can cost you dearly in frustration and weld quality. If you find yourself asking questions such as "am I using the proper voltage?” or “do I have too much or too little wire?” then this article is for you! We will touch on the basics of properly setting up your welder, and then look at what your weld bead is telling you. Unless you weld for a living, it is often difficult to know if your MIG welder is set up for optimal performance.
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