Mig Welder Not Arcing Properly

5mm Lightness and carry easily HF Arc-starting and strong welding permeability. Where it used most? Most of the construction sites, furniture develop mills, and tools developer well renown about Mig. Can anyone help me out on this. • Limit welding currents to less than 160 Amps. Keep welding equipment away from flammable walls. Decorative welding projects is a complex subject, and this article is far from being comprehensive on any aspect of it. The elaboration of MIG is an inert metal gas. Each unit is designed and manufactured by Hobart Welding Products in Troy, OH USA. That said, I see nothing wrong with taking a little flux core welder to your bolt handle. The expert well recognized the common issues and resolution. name, contestant number, and chapter. Like all welding, it is a technique used to join two metals. Nevertheless, if you want to check the output levels, simply follow the steps below. The POWER MIG 210 MP is a multi-process welder for the hobbyist, educator or small contractor who wants to MIG welding and a lot more, including stick, TIG and flux-cored welding. No matter what welding procedure you're using, whether it's tig, mig, arc, or oxy acetylene welding, heat control is the thing to keep in mind. The welder uses electrodes. Notice how the bead isn't. I bought a new mig star 250 gas/gasless welder which had a booklet (which had the welding chart in it but my little one has wrecked it so I am now having problems with proper welding settings. Gasless Mig Wire. This is because these processes are much slower and less consistent than the arc welding processes listed above. If you can, work outside when using an arc welder. The traditional stick/arc welder produces a lot of spatter and requires plenty of cleanup afterward. When your Millermatic 251 isn't working properly, it can be a bit frustrating, especially when you can't figure out what is wrong. I have the argon set between 30-40 cf and the amps and feed set correctly but when I am welding the wire melts before it touches the metal for a good portion of the weld before finally feeding correctly. Miller CP-300 DC Arc Mig Welder Power SourceFor sale is this used Miller CP-300 DC Arc Mig Welder Power Source. I have been mig welding closed some 1/4" trim holes on my car, and I am using a small magnet to hold a 1/4" "chad" in the hole, I tack it, then remove the magnet and weld it around. Ideal for auto body repair and fabrication on most ferrous metals. Whether you require the robust and reliable ESAB inverter welders or the Kemppi, and Fronius models, we have the right MMA welder, and inverter welder for your budget. The arc is very bright and hot. Page 6: Extension Cords. GMAW arc spot welding adds filler metal to the weld. So, here’s a quick explanation of how to weld stainless steel with a MIG welder:. Even if a small thing goes wrong, there will be a drastic effect on the welding machine as well as the welding work. The drive roll groove (and knurls on rolls so configured) can become packed with the drawing compound (used during wire manufacturing to reduce the size of nearly all the solid or flux-cored wire used in the MIG applications), industrial grit from grinding, and smoke from welding. Hi, im new to the forum and have a problem with my mig welder. Flux Cored Arc Welding Process E7XTX –No Shielding Gas. A welding arc is extremely bright and intense and, with inadequate or no eye protection, the retina can be burned, leaving a permanent dark spot in the field of vision. I baught this Clarke 135SG about 12-14 months ago online from welding depot. MIG Welders for Sale. MIG welding is usually the welding of choice for DIY enthusiasts. Meet the newest member of our best-selling line of Powermax® portable plasma systems. After all, so-called TIG welding (for tungsten inert gas) is also a metal-inert-gas welding process. If not, then make sure to fix it. Compared to any other method of welding, MIG welding is, hands down, the easiest way to weld. If you try to move a little slower, make sure you slow down your wire feed speed as well. The welding mask is not working properly. Comes complete with; ESAB® Rebel™ EM 215ic MIG welder. 90 Amp 120v Wire Feed Portable Mig Welder Non-Gas Welding Fabrication Welding Set. As the weld is laid, MIG wire is fed through the torch along with a shielding gas. I use Lincoln. Both ANSI and AWS are more cautious, recommending a shade number 11 for welding at 60-160 amps, a number 12 for 160-250 amps, and a number 14 for 250-500 amps. The first thing to check is the gun’s nozzle. The product comes with 2 lb. Another selling point to consider is durability. Best regards - Al. Learn vocabulary, terms, and more with flashcards, games, and other study tools. One of the ways to ensure you get quality welds is by looking after your welder and it maintains high performance levels for longer. Ensure other people are protected from flashes by closing the curtain to the welding bay or erecting screens. If not handled properly, weld may become porous. There is occasionally splatter from the spread of the arc. I have a SIP 190 mig and agree whole heartedly, they're not a good mig, worse still for a novice trying to get one of these things to weld correctly could be even dangerous if the welder does'nt know a good weld from a bad one. 1, "Safety in Welding, Cutting and Allied Processes," the workpiece or the metal table that the workpiece rests upon must be grounded. Csevers is right, all welders have their place. The nozzle in the gun directs shielding gas around the arc weld pool. A good MIG welding trick is to aim for an arc length between 6mm and 12mm depending on the amperage you’re welding at. -Do not wrap cable around your body while welding. When your Millermatic 251 isn't working properly, it can be a bit frustrating, especially when you can't figure out what is wrong. These are droplets of molten material that are produced near the welding arc. Flux Cored Arc Welding Electrodes Types and Designations. will not arc on any heat setting. Helping welding & metal fabricators, engineers, industrial suppliers, governments & systems integrators find the best solutions. I even tried at the ground lug and nothing. The lower current and voltage settings used for MIG brazing cause the arc to be. Zeny: How to Install the Welding Wire Properly. I was welding the other day and in the middle of a bead, it stopped welding. In the article below, we shall show you steps to follow when using a MIG welder. Move flammable and explosive material at least 35 feet from the welding arc to prevent welding sparks. Miller CP-300 DC Arc Mig Welder Power SourceFor sale is this used Miller CP-300 DC Arc Mig Welder Power Source. Moreover, it allows even novice welders to create strong welds with a high level of structural integrity. A standard arc welder is undoubtedly the best way to weld galvanized steel. For example keep welds away from areas where materials are painted or dipped. With the spool gun connected i was able to get an arc. A Management & Engineers Guide to MIG Weld Quality, Productivity and Costs. Handful of people have switched to MIG welding because it's easy to learn. Table of Contents Step 1-Safety is paramountStep 2-Prepping your MetalStep 3-Setting the Gas, Voltage & AmperageStep 4- Install the WireStep 5- Clamp DownStep 6- Get ComfyStep 7- Welding […]. The equipment carries high currents at significant voltages. It feeds wire at 39-468 inches per minute and has infinitely adjustable wire speed and heat. I’ve seen guys go buy what they thought was a lemon of a welder only to discover that the guy who was using it didn’t change the roller. Here shows the detail Mig welder troubleshooting guide. Operating Instructions and Parts Manual Metal man Industrial Welder 5 MIG 135 MIG WELDER supply or remove the coating from the material in the weld area. In general, inductance reduces spatter, improves arc stability and makes it easier to learn to MIG weld, a big plus when students encounter MIG welding for the first time. • Do not point MIG gun toward the user or other personnel. That said, I see nothing wrong with taking a little flux core welder to your bolt handle. Use low inductance output connection when short-arc welding, and high inductance output connection with spray and globular transfer welding. Metal Inert Gas or MIG welders are popular with metal workers because they not only come with welding guns for precise welding, but also they can be used to weld a variety of metal. Test the equipment to ensure proper. Troubleshooting MIG Before and After You Weld Print Article Today's MIG welders have become so easy to use that when a weld doesn't turn out as expected or the equipment starts acting differently, it can confuse the operator and leave him searching for an answer. Potential Effects A summary of potential effects is provided in the table below and is based on device testing at St. 1, "Safety in Welding, Cutting and Allied Processes," the workpiece or the metal table that the workpiece rests upon must be grounded. It is considered difficult for beginners, especially compared to methods like TIG or MIG. If you read my previous post I did not have a gun for it. Welder’s guide to Arc Stud Welding This distance governs the power in the weld current arc. MIG-28A* WIRE FEEDER These INSTRUCTIONS are for experienced operators. Your welder should have an owners manual and maybe even a service manual. arc welding If your not a realy good arc/stick welder. The Arc 230 is a premium Century welder, and that fact permeates throughout all of its different additions. The mix of nickel and iron has a lower coefficient of thermal expansion, which lowers welding stresses and makes it less prone to cracking. Metal Inert Gas welding can be a world renown and respected trade, however, the hazards can out way the rewards of their production when the proper MIG Welder Safety guidelines aren’t taken. Taking the time to set up the machine properly will make the weld easier to do, and at the same time produce a good-looking weld. In oxy acetylene welding you also use an electrode. Csevers is right, all welders have their place. Inert gas shield protects the weld automatically. We supply a wide range of inverter welders, MMA welders, and stick welders, from the best manufacturers in the market. ER70S-6 mild steel MIG welding wire is a high strength mild steel MIG wire. For MIG-welding 1mm sheet steel, 0. The two most common types of welding in practice today are gas welding and arc welding. TRAINING The operator should be properly trained to use the welding machine safely and should be in-formed about the risks relating to arc welding procedures. MIG Welding. Before setting up your machine you need to prepare and research a few things before squeezing the trigger to striking an arc. Since MIG welding traditionally uses short circuit transfer for light and medium welding chores, 75/25 shielding gas is typically the most common you will find on the market. Part of what makes the Eastwood MIG 135 a great welder is that you can easily tailor it to your specific needs. As a result, it produces a stronger and more durable weld. • Limit welding currents to less than 160 Amps. If the MIG welder wire feed is too fast, then you will get considerable spatter and bad penetration. Spatter happens when welding currents are too high, incorrect polarity or if there is insufficient gas shielding. com 1,278,905 views. For wire (flux-core or MIG) welding, keep a work distance of ⅜ to ½ inch. Direct current is used to form an electric arc, causing the metals to heat up and melt so they can be joined together. Scheme types of welding electrode. Our offered welding equipments, including MIG welders, TIG welders, plasma cutters or consumables are the best-selling devices in the welding industry. Robot MIG welding. This is the ideal MIG machine for a beginner with plenty of room to grow as you gain more experience. TCP is the focal point of a tool. SAFETY NOTE: Welding repairs should only be carried out by a qualified technician, this information is provided for educational purposes only. I'm not saying this is a perfect weld, but this machine was easy to tune to wire speed, amps and voltage to produce a satisfactory weld for a beginner in. One of the best things about MIG welding is the. I use Lincoln. The equipment carries high currents at significant voltages. Just a side note before we start. Store idle welders out of the reach of children and it on and off. From auto repair to construction, you’ll find the right type of welding equipment and accessories for your project. You want a nice sizzle with little "pops and spits". With lift TIG welding, you’ll be able to work with dissimilar metals when required. +44-1420 588 184. Its name derives from the term metal inert gas, which is really a misnomer. For a vast array of top quality welders at affordable, competitive prices you need not look any further than our range as we stock all professional name brand welding equipment. The most economical and cheapest way to learn if welding is for you or not is to start with stick welding. It is a welding type of arc welding process. There is no need for shielding gas as in the TIG or MIG welding techniques, which means that you can use this technique outside even during wind or rain. The welding circuit is not connected to ground within the welding machine, but is isolated from ground. If a torch is damaged it could short out. See more ideas about Welding, Arc welding and Welding projects. A MIG (metal inert gas) welder is a kind of arc welder, and all arc welders use the same basic principle: an electrical current is passed between two electrodes, causing a short circuit across the gap between them. MIG arc starts used to be a common issue especially with Lincoln's MIG equipment. A MIG Welder is a Gas arc or Flux Core wire system which works with electrical power. Additionally, the material you use for MIG welding must not be dirty or rusty. Hence, MIG will weld cold on thick stuff, and will not penetrate. 4,Applicable for welding stainless steel and carbon steel Features Suitable for welding plate specially Able to welding plate which thickness is from 0. MIG welding uses a gun that automatically feeds a wire electrode. Table of Contents. Operators typically reduce the arc length control (Voltage) to achieve this. The still popular name MIG (Metal Inert Gas) was initially adopted when the inert gases used to weld aluminum were only argon or helium. The technical name for MIG welding is gas metal arc welding but it is also often referred to as wire welding. • Do not look at an electric arc without proper protection. It features an accurate wire feed speed dial, slow wire run-in, burn-back control and torch. See my site on mig welding A 6013 arc or stick welding rod is very common as a general purpose rod, we call them a GP rod here in Australia. • Wear safety glasses under your welding helmet with side shields. Our offered welding equipments, including MIG welders, TIG welders, plasma cutters or consumables are the best-selling devices in the welding industry. This durable power source also provided excellent arc starting characteristics. MIG welding is an arc welding technique of using a continuous solid wire electrode which is served via a welding gun into the weld pool to melt and join pieces of metal together. checked all connectors and wires inside for fit and corrosion all seems ok. While this may not be necessary in terms of how the machine operates, that strap makes it much easier to move this device around. A more accurate acronym is GMAW, though, and sometimes it is shown as such. The equipment carries high currents at significant voltages. A MIG (metal inert gas) welder is a kind of arc welder, and all arc welders use the same basic principle: an electrical current is passed between two electrodes, causing a short circuit across the gap between them. Our offered welding equipments, including MIG welders, TIG welders, plasma cutters or consumables are the best-selling devices in the welding industry. TIG-205 is a rectifier adopting the most advanced inverter technology. Like MIG, TIG welding uses an electric arc to create the weld. Since you're investigating MIG welders, it's safe to assume you have a shop or a garage in which you plan to work. As this is a semi-automated process so there is a constant supply of filler wire in the form of MIG wire. It has 220 volts going into the transformers when in weld mode. Flux-MIG 100 www. I know its a hundred variables that could effect the outcome. Arc welding is stick welding, and welding rods supply their own shielding gas when burned in order to create the conditions required to weld a proper bead and prevent porosity, weld contamination, and various other unfavorables. Check work lead negative lead contactor control cable. Arc welding can be broken down into three types: MIG, TIG, and stick. Are you having trouble deciding what the best MIG welder under 500? A MIG welder is versatile and makes your work a lot easier. For example, welding (visible) car panels will be quite difficult. However, there is a myriad of projects that only require the fusion of thinner metals. name, contestant number, and chapter. The L-Tec its a 250amp MigMaster, when you begin to weld it will do ok for. If the angle of the welding gun is incorrect, heat will not be evenly distributed and the filler metal will not flow into both workpieces. Using gas metal arc welding (GMAW or MIG) and gas tungsten arc welding (GTAW or TIG), we can repair, build-up and facilitate engineering changes on your tools. Before setting up your machine you need to prepare and research a few things before squeezing the trigger to striking an arc. This is my first NEW welder. 1 listed in Safety Standards. This is a nice touch. Processes MIG, Flux-Cored. This is also called as Gas Metal Arc Welding (GMAW). 2,Stable and reliable welding current. I purchased a used Ck Systematics MP250 Mig welder. Too small of a nozzle will not provide sufficient flow of the shielding gas. When in weld mode, no electricity is reaching the 24 volt electric motor on the feeder. tig not arcing properly??? 02-25-2005, 12:40 PM we got a new tig at school (san diego state university) a few months ago, and i went to try and use the machine today with the instructor(7 yrs navy welding) he's a student too so he cant watch it all the time. Rust or oil on the welding surface. Splatter can build up and arc out with the wire, and it can also break loose and fall into the weld puddle, contaminating it. SUNGOLDPOWER 200 Amp MIG MAG Arc MMA Stick Multifunction DC Welder 110/220V Dual Voltage IGBT Inverter Welding Soldering Machine Gas Shielded/Gasless Flux Core Wire Automatic Feed Welding Low Price. Like any other welding process, certain precautions while handling a MIG welder are important to be taken. Arc welding requires an operator and a power source. • Do not weld above or near containers under pressure. These MIG welding machines are very easy to use if you have the basic knowledge of welding. I use a combination of mig,and arc for most projects. How to Setup a MIG Welding Machine to Weld. more premium quality MIG welders and accessories from some of the leading names in the industry, such as Dynaweld, Lincoln, Loctite, Ross Tools and many more. The expert well recognized the common issues and resolution. So you bought a used MIG welder and you want to know how to set it up with gas for welding mild steel or aluminum? Well you've come to the right place. com 1,278,905 views. At first I thought this was due to the wire getting stuck and the drive wheels slipping in the weld. One of the ways to ensure you get quality welds is by looking after your welder and it maintains high performance levels for longer. DC on the other hand can either be positive or negative polarity. owner's manual congratulations! you have purchased the worlds finest 115 volt ac single phase mig welding system available exclusively from snap-on tools. The 141 features Auto-Set, which eliminates the guesswork of setting voltage and wire feed speed for your MIG welding application. So, in general, a MIG welder can be much more beneficial. Troubleshooting MIG Before and After You Weld Print Article Today's MIG welders have become so easy to use that when a weld doesn't turn out as expected or the equipment starts acting differently, it can confuse the operator and leave him searching for an answer. Flux Cored Arc Welding Electrodes Types and Designations. 5 out of 5 stars 26. I got a question, and I'm not sure my MIG welder is supposed to do this I borrowed a buddy of mines before I bought this one,. Lets go over some MIG welding tips that will help you get started welding and build your knowledge. Some Important Definitions Arc-on time: When the welder holds an arc between the electrode and the work piece Idling time: When welding equipment is ready for use but is not generating. Check to make sure the welding machine is properly grounded. MIG welding uses a gun that automatically feeds a wire electrode. It feeds ok, but i cant get any kind of an arc. Gases like nitrogen oxide, chromium, nickel oxides, carbon monoxides may hamper your lungs if it gets inserted into your body. I have tried all power settings and wire speeds. MIG (metal inert gas) welding, also known as wire feed welding, MAG (metal active gas) welding, or GMAW (gas metal arc welding), creates clean welds and can be used on thick or thin plate metals. The gas is shielded. I have a millermatic 185. Today I received the gun for it and was happy to finally be able to start welding. Easier disciplines like MIG often lead into TIG welding. I even tried at the ground lug and nothing. 5 Best MIG Welder Reviews of 2019 - Reviews & Buying Guide fit the clamp properly. Whether welding inside or outside, shield the arc and weld puddle from drafts with a welding screen. TCP is the focal point of a tool. The Auto Arc 130 is backed by the Hobart Auto Arc 3/1 Industrial Warranty. For the MIG 100, MIG 120 and MIG 160 Tighten the welding wire clamp nut to fasten the welding wire into position. MIG welding is actually an arc welding method in which a continuous wire electrode is fed by a welding gun, joining the two materials together. Arc welding is really any welding process that uses electric, which include MIG (Metal Inert Gas), TIG (Tungsten Inert Gas), and SMAW ( Shielded Metal Arc Welding). I've been welding quite a bit with it today but I thought when the duty cycle trips the feed would no longer work either. Includes: CV-300 Power Source, Wire Feeder, MIG Gun, Cables & Hoses. In the article below, we shall show you steps to follow when using a MIG welder. PPE is required in the Laney College welding lab. That is probably what the author is getting at. MIG Welders for Sale. com 1,278,905 views. Whether its MIG, TIG, Stick, or Multi-Process CC/CV powersource, or even plasma cutter, the inverter based Power Series from Everlast features reliable, industry standard IGBT electronics from Fairchild® and Infineon®. Proper maintenance can assist to protect your MIG welder investment. By the way, whatever the wire diameter, it’s good practice to keep the correct arc length. Although advances in how to weld have moved the industry further toward arc welding, gas welding is still a process that maintains a lot of use due to the ease of using it for small welds and repairs. Making a high-quality MIG weld is no easy task. TRAINING The operator should be properly trained to use the welding machine safely and should be in-formed about the risks relating to arc welding procedures. I have the argon set between 30-40 cf and the amps and feed set correctly but when I am welding the wire melts before it touches the metal for a good portion of the weld before finally feeding correctly. In the process, it binds the two base materials together. Many people believe that welding is very difficult, whereas MIG welding is the simplest form you can master. Because MIG welding employs a. What is an Inverter Welder?. Use an arc welder to weld galvanized steel. When you have the power and. The first and most common problem why usually MIG welder doesn’t make an arc is that the ground clamp is not attached to the base metal properly. checked all connectors and wires inside for fit and corrosion all seems ok. Have you ever had difficulty getting the MIG wire to start an arc? Here's an easy solution. When appearance or “X-ray” quality are not required, but speed is, MIG welding may be the best choice. It shows loading the flux core welding wire into a Zeny MIG 130. Robot MIG welding. The welding wire itself completes the arc that was started when you clamped the other electrode to your welding project. Strongly created not just to last but to deliver superior weld, Handler 190 boasts of industrial performance and easy-to-use features. Where compressed gases are to be used at the job site, special precautions should be used to prevent hazardous situations. So I take it apart. 0 5 MIG Welding Tips for beginners - Expert Advise. Use low inductance output connection when short-arc welding, and high inductance output connection with spray and globular transfer welding. It feeds ok, but i cant get any kind of an arc. It is very easy to set up. The two most common types of welding in practice today are gas welding and arc welding. However, knowing these complications will help you to protect the machine from problems and their solution. First time MIG welding aluminum with a spool gun and I can’t figure out what I’m doing wrong. Metal is also a good conductor of heat and the thicker the metal, the more current needed to keep it at that point. Wear ANSI approved eye and body protection. During MIG welding, an electric arc is formed between a wire electrode - a MIG electrode - and the metal material that you're working on. But making a high-quality MIG weld when your gun and consumables aren't functioning properly is just about impossible. Its feeding wire fine but wont arc. • Do not weld above or near containers under pressure. spool of flux-core wire. Not only affordable, but people are cautious to find the efficient welder that provides the highest performance for a welding application. I waited till today but still nothing. Welding is dangerous work. These MIG welder / TIG welder/ Stick welder muti-function units were designed to give excellent performa. MIG welding has been in use since the 1940s and remains to be very useful today. Welding on closed containers, such as tanks,drums, or pipes, can cause them to explode. Even if a small thing goes wrong, there will be a drastic effect on the welding machine as well as the welding work. Flux-cored arc welding is similar to MIG but doesn't require any shielding gas. An analogy is to think of a welding circuit as a basic DC electrical circuit-The welding machine as the voltage source and the welding arc as the resistance. Splatter can build up and arc out with the wire, and it can also break loose and fall into the weld puddle, contaminating it. The main advantages of using the shielded metal arc welding technique include the low cost of the equipment that is necessary, as well as its portability. properly follows the arc. when i opened it, it shows blank window. Common problems include no wire feed. The most economical and cheapest way to learn if welding is for you or not is to start with stick welding. You are kindly asked to carefully read this manual, to assure faultless operation. Arc welding methods. The Auto Arc 130 is backed by the Hobart Auto Arc 3/1 Industrial Warranty. I new to mig welding as I've always used an Arc welder. Consider welding several fillet weld samples that are easily evaluated to ensure proper fusion to the base metal and between weld beads is ensured. When you have the power and. +44-1420 588 184. if done properly with the right setting the welds are basically unbreakable. Also, you want to be sure the gas flow is working properly and the regulator and hose has a good seal. If the angle of the welding gun is incorrect, heat will not be evenly distributed and the filler metal will not flow into both workpieces. The reason a no gas MIG welder works so well for beginners is because you don’t have to buy a gas cylinder to start welding with it, unlike MIG welding. Welding sheet metal with a Mig involves what I refer to as "dot" welding. The secret is its collection of diverse heavy-duty models of various capacities. A typical GMAW. 3,Low no-load loss,low power consumption. Move flammable and explosive material at least 35 feet from the welding arc to prevent welding sparks. Do not attempt to force a small tool or attachment to do the work of a larger industrial tool. The catch is, you need to how to set-up the welder properly! Once the welder is set-up properly it is a “point-and-shoot” operation with very little welding skill needed. Search for used used mig welders. Refer to the material safety data sheet for the manufacturer’s instructions. The spark and wire feed would cut in and out in a strange sort of popping. Weldpro's flagship 200 amp MIG welder that goes beyond MIG and Flux Core welding! The model 200 is also capable of true lift TIG welding as well as stick welding and aluminum welding with the optional spool gun. The MIG welder is fired up and ready. MIG stands for Metal Inert Gas and it's a process of using electricity to melt and join together pieces of metal. To use MIG welders for Flux Cored Arc Welding (gasless welding), it requires changing the polarity switch near the drive to alternate from a solid wire(MIG wire) to flux cored wire. For example keep welds away from areas where materials are painted or dipped. He found the circuit was shared in the bathrooms of his home with GFCI's and if his wife was running a blow dryer or curler iron, the circuits would draw too much and not run his MIG. Do not allow viewing by visitors without proper eye and body protection. We would stick or mig on reverse polarity at the highest amperage we could. 11 or 12 shaded filter lens. Do not weld on coated metals, such as galvanized, lead, or cadmium plated steel, unless the coating is removed from the weld area, the area is well ventilated, and while wearing an air-supplied respirator. Hence, MIG will weld cold on thick stuff, and will not penetrate. Basic equipment setup and welding procedures ; 2 Gas Metal Arc Welding. Even if a small thing goes wrong, there will be a drastic effect on the welding machine as well as the welding work. MIG welding, or metal inert gas welding, is a specific process that requires unique equipment and experience to perform properly. In the case of a robotic welding system, it refers to the location of the robotic MIG gun and how it corresponds with the position of the welding wire in the joint (gun-to-work distance).