MIG welders and welding tricks? We have many articles on this subject, you can use the search box of this piece doesn’t answer your questions.
The MIG welder performance depends on several parameters. The duty cycle is among them. It means the percentage of a 10-minute period the welder can work until it gets overheated. For example, “90A / 20%” means that a welder can work for 2 minutes at 90A before an 8-minute cooldown, i.e. 20% of 10 minutes. Now, about the material. We should note that the maximum thickness of a material a welder can handle depends on its amperage and welding wire thickness. Lastly, consider the thickness of the joint a welder can make in a single run. Household models can weld metal sheets from 18-gauge to 1/4” thick at the output of 70A – 180A, respectively.
How to pick a welder tips: Stepped voltage or synergic: Synergic MIG’s have the edge when you’re welding stainless & aluminium as they are pre-programmed, easy to set up & portable. They also provide a better weld characteristic and so give cleaner weld bead with less/no spatter. Inverters: Considerably smaller and lighter and so ideal for site work. All inverters are stepless and so have infinite control. Also cheaper to run power wise. Budget: How much welding are you going to undertake? Gear your purchasing decision around the jobs you will be working on the most. Polarity changeover; A lot of welders at the light industrial end will to be able weld with gasless flux cored MIG wire. Is the switchover easy on the machine you’re considering. Availability of spares & after sales service: Ask where the machine is actually made. Even the more recognised brands largely outsource their production, which can lead to quality and after sales issues with lack of continuity of supply for spares.
Delivery of parts to the welding station in an organized and logical fashion is also a way to reduce welding costs. For example, one company was manufacturing concrete mixing drums. In the fabrication process, the company produced 10 parts for one section, then went on to make 10 parts of another drum section, etc. As pieces came off the line, they were put onto the floor of the shop. When it was time to weld, the operator had to hunt for the pieces needed and sort through them. When the outside welding expert pointed out the amount of time being wasted in this process, the company started to batch each one on a cart. In this way, the pieces needed to weld one drum were stored together and could easily be moved to the welding area. This type of scenario is also true for companies that may outsource parts to a vendor. Though it may cost more to have parts delivered in batches, it may save more in time than having to organize and search through parts to be able to get to the welding stage. How many times each piece is handled in the shop may be an eye-opener to reducing wasted time. To measure such an intangible as this, operators are asked to put a soapstone mark on the piece each time it is touched – some companies are surprised to find out how many times a part is picked up, transported and laid down in the manufacturing process. In the case of one company, moving the welding shop closer to the heat treatment station eliminated four extra times that the part was handled. Basically, handling a part as few times as possible and creating a more efficient production line or work cell will reduce overall costs.
Some tips on welding equipment, MIG and TIG welders, plasma cutters. Flat-Position Welding Increases Welding Speed : It’s common knowledge that welding in a horizontal position will be the easiest and fastest way to weld. A flat position is not as taxing to maintain and the welding puddle will stay in place. Take some time to evaluate each project before beginning in order to make sure the majority of welds can be completed in this position. If a job calls for vertical welding, see this article about vertical welding. Core Wire Feeder Increases TIG Welding Speed: For professional welders hoping to speed up TIG welding, a core wire feeder will add filler metal through an automated process. Watch this video on how it works. This enables welders to work with both hands and to maintain a constant flow of wire into the welding puddle. Ed Craig at the Frabricator writes about the wire feeder process first developed in Europe, saying it is “suitable for all-position welding on materials of any thickness, the process addresses traditional GTAW limitations and can enhance both manual and automated TIG weld quality and productivity.” Read additional info at MIG Welders.
USA market pick: LOTOS Technology is a California company that has only been around since 2007. Still, the LOTOS MIG is impactful and high quality enough to make it onto our list. This one is a versatile machine that is a fair price of about $400. And—provided that you have the necessary 240-volt outlet in your home—it can be set up in a matter of minutes. The duty cycle of this welding newcomer is impressive, and it can be utilized by pros and amateurs who have been continually impressed by the bang they’ve gotten for their buck. The LOTOS can weld steel and stainless steel from 18 gauge to ¼ inches and aluminum to 1/8 inch or thicker. Thermal overload protection doesn’t let this machine overheat, and infinitely adjustable heat/amperage as well as wire speed makes using the LOTOS simple. Check out the LOTOS MIG140 for a lower power alternative.
Another quality machine from Hobart that has 25A for 190A output range so you can weld up to 5/16 in steel. The power input is only 230V so you won’t be able to use this on your standard household power outlet. The 190 is a wise choice if you’re considering buying a 140A welder but think you may want to upgrade in the future. It’s not much more expensive and you can always turn the 190 down but you can’t turn a 140 up. There’s loads including for the price, you get power, durability, a good duty cycle and all the extras you need to get started, including .030 contact tips, 0.30 flux cored wire and gas gauges. See the full review here.