These machines have a higher amperage range and a longer duty cycle. Brushing can push contaminants further into the material. DO NOT under any circumstances use a brake cleaner-type product as they contain a chemical that when heated or burnt creates what was once known as mustard gas and can be DEADLY. He has always been interested in welding from an early age and has the cuts and bruises to prove it as he set out to work with a variety of metals. A good rule of thumb is to tilt the torch back 10-15 degrees from the way youre traveling on the work piece (left to right for a lefty and right to left for a right handed torch holder). Primarily to help you avoid painful burns on your hands. You can also use a fresh sanding pad or disc as well. Preparing your material prior to welding is always very important to do correctly. As the workforce in the welding industry ages and more of the workforce moves to retirement (this is a topic for another article) there are innumerable experienced welders who would be happy to pass on the trade to someone who is willing to listen and learn. How to Weld Sheet Metal or Thin Stock (For Beginners), Beginners Guide: MIG Welding Aluminum (with Charts). Let the amperage slowly bleed off until its down to nothing, then hold your torch over that area until your post flow shuts off on your machine. Youll be hard pressed to find anything decent for that budget. There are a few ways you can cheat this setting. The filler can be dipped into the puddle or placed in the joint and moved forward and back. This will result in an impure and low-quality weld. With practice, I've learned what welding equipment works and what doesn't via firsthand experience. Wait for it, Wait for it- Patience is something that is tough sometimes, especially when you have so many things going on at one time when TIG welding. The Black Art of TIG Welding Aluminum- Crash Course Edition. TIG welders use a tungsten electrode which keeps the weld puddle formed. Tig Welding can be a black art if you start on your own with no direction. In addition, the accessories which come with one of these welders are typically limited to a: Tip: When considering overall costs of welding equipment, dont forget to factor in the cost of your bottle of argon shielding gas. Just know that TIG welding is not the sole technology for the process. Recommended Filler Metals For Various Aluminum Alloys: Advantages and Disadvantages of Aluminum TIG Welding, Common Methods for Cleaning Aluminum Surfaces for Welding, Brazing Rods an Alternative to TIG Welding Aluminum, looks better and seals better than MIG aluminum, Duty Cycle in Welding Explained (with Chart). I want to inspire beginner welders about this amazing hobby and share my pro tips with all of you guys.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'beginnerweldingguide_com-large-leaderboard-1','ezslot_7',197,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-large-leaderboard-1-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-large-leaderboard-1-0'];};report this ad. It comes with practice, but if you put yourself in a relaxed state prior to starting your arc and continuing that relaxation through your weld, you will only see positive results. In the end nothing can beat practice and repetition, but if youre conscious some of the common mistakes others make you can correct as soon as they happen to you. New technology has recently been developed which enables welders to fabricate or repair aluminum stronger than a TIG welding machine using a simpler process. Instead, reach out to an expert and ask for help. 6xxx magnesium, silicon and aluminum alloy, Break tungsten off and allow it to ball when welding starts or us a copper plate to ball, Aluminum turns to a mirror color when molten, Aluminum requires higher amperages than the same thickness steel due to heat dissipation, Be sure to determine aluminum base type before welding, Some aluminum is not weldable by the tig welding aluminum process, Lack of portability (Shielding Gas Cylinder & Hoses), Not ideal for outdoor welding the shielding gas is susceptible to wind & drafts. This happens without you realizing it because youre probably trying to turn it to see the puddle and tip of the electrode better. My name is Liam. The torch nozzle also must have been selected for use on aluminum. A foot current control is essential since heat builds up as the weld is started, requiring less heat from the electrode toward the end of the weld. Many of these career opportunities are either in the aerospace or the shipbuilding industries. TIG welding can be amperage controlled in different ways including an AMPtrol on the torch itself, foot pedal control and simply using the machine setting. If you start laying the torch down too much on any material, the weld puddle opens up quickly and the workpiece heats up so much you could blow through the metal or the puddle grows uncontrollably large. I then suggest to follow up with Eastwood Low VOC PRE, Acetone, or a similar chemical. Please be cautious about blocking off ventilation from the room which you are welding in since the shielding gasses and the fumes from welding can be extremely hazardous. Ensure that all of your Personal Protective Equipment (PPE) is in place and properly functioning. The selector switch on your machine should be set to Alternating Current (A/C). Even on a short weld like this there are small fractures that are already forming, not what you want on anything you care about! Since then, I've been making various types of welds for both business and pleasure. This would require the arc to exist for longer periods of time creating too much heat. This will keep the shielding gas flowing over that vulnerable last weld and keep it from developing a crater and a crack at the end. In contrast, aluminum MIG welding equipment is specialized specifically for the process.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'beginnerweldingguide_com-medrectangle-4','ezslot_6',166,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-medrectangle-4-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-medrectangle-4-0'];}; In order to use a MIG welder to weld aluminum material together, you need what is called a spool gun. For this reason, a weld cannot be extra long or large. If you intend on welding more after your first weld bead for the day, you simply wont last if your body is tense you will be fatigued and your subsequent weld beads will suffer. Dont pull away!- Most of us learn MIG or ARC welding before we tackle TIG welding. Please read your welding helmet manual for instruction regarding properly adjusting your welding helmet. There is no substitute for experience in the field of welding, but education and practice will help accelerate your gain of that valuable experience. Since safety is always of the utmost importance in the field, always make sure your PPE is on your person and functioning before starting your weld. The main factors which cause a welding machine to be more economical in price are its: More economical TIG welders for welding aluminum still have the minimum requirements necessary such as:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'beginnerweldingguide_com-box-4','ezslot_3',167,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-box-4-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-box-4-0'];}; But these features will be limited. If youre having this problem I can almost 100% bet you have your torch laid down too far. So try a pair of gloves and at the worst case, you can hold onto them for a different use if you dont like them for TIG welding aluminum. The oxide has a higher melting point than the aluminum itself, which is why it needs to be removed before welding. Mainly, due to the heavier duty components in the welding machine. Disclaimer: Weldguru.com is based on information from multiple sources including U.S. Army Operator Circulars, O.S.H.A and our own first hand experience with welding. A big mistake we see beginner TIG welders make when learning how to weld aluminum is not waiting for the puddle to fully initiate. (2) Ductility of weldments of these base metals is not appreciably affected by filler metal. There are two reasons why you have to clean your raw aluminum material. Learn to relax while you are performing your weld bead. On the Eastwood TIG 200 this dial is called Clearance Effect and goes from -5 to +5. A few things happen when you immediately let off of the pedal and pull your torch away from the weld at the end of a puddle on aluminum, the first being that the molten metal is left without shielding gas for a fraction of second in which it is now vulnerable to being contaminated by the air. Right before starting your weld it is always helpful to visualize the welding process. There is a wide array of options and features to select from while in the market for a TIG welder. Since the amperage used is typically higher than when welding other materials, you should increase the shade level to match the intensity of the arc light. These small adjustments can result in big improvements in your weld quality. Above you can see a piece of clean aluminum that I pulled off the shelf and welded on. Keep a cheat sheet of your best welding settings so that you can repeat your best welds. Using the high-frequency arc-starter function, push your foot on the foot pedal to start your arc. Short duty cycles can be inconvenient when you need to perform longer welds. As discussed in the previous section, high-performance TIG welders for aluminum materials have everything that the economical grade welders have, but much more. You should turn and clamp the workpiece to a more comfortable position, get a better pad for your chair, and make sure your foot pedal is in a good spot. Pricing depends on availability in your region, but larger bottles can be expensive. With proper planning, studying, and of course practicing, the goal is to eventually enter the welding profession again. Take your time and keep some of these key steps in mind and youll be on a path to close-up worthy welds! There are numerous parameters which must be set in the machinery, and as previously discussed those parameters are dependent on different variables. High-performance TIG welders have integrated water cooling systems which dramatically decrease the build-up of heat in the torch and in the machine. The TIG welding process typically allows the welding operator to sit at a bench and weld the workpiece in position. Your shielding gas should be pure argon gas for optimal weld purity and performance while welding aluminum. Tip: An optimal weld setting which works for someone else might not work the same for you. Heliarc Welding Explained: What Is It? This is done by reducing heat buildup in the water by passing cool air over a radiator inside the machine. You should run through a checklist to make sure everything is set up and ready for your welding operation.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'beginnerweldingguide_com-leader-2','ezslot_13',171,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-leader-2-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-leader-2-0'];}; Your checklist should include at least the following items: Tip: Since there are so many items to remember before beginning your weld, it may be helpful to create your own list on a piece of paper and attach it to the top of your welder so you can reference it easily. We respect your privacy and promise not to spam. Especially during a longer aluminum weld. Nonetheless, economical-grade welders have their place in the market. I highly suggest converting you torch gas nozzle and collet body to a gas lens to achieve better gas coverage and more efficient cleaning. Perhaps you have heard about the challenges involved with welding aluminum. All too often we see first time TIG Welders struggle with the basics and this can lead to frustration and a long learning process. The resources are out there, it is just a matter of realizing that you are not alone in being frustrated with learning TIG welding and asking for help.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'beginnerweldingguide_com-large-mobile-banner-2','ezslot_12',182,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-large-mobile-banner-2-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-large-mobile-banner-2-0'];}; This tip might be as obvious as it sounds, but in the case of welding aluminum, it is extremely true. Your TIG electrode should be pure tungsten due to the better durability and purity. Mostly since they are made from a thicker leather material, yet still allow full range of motion. Affiliate Disclaimer: This post may contain links that will earn us a commission at no cost to you. Youre settings mean a LOT- Even on a simplified machine like our TIG 200 AC/DC the extra dials used for aluminum can be confusing, even more so if youre learning on a higher end machine with lots of dials, switches, and blinky gauges. Like we talked about in the paragraph above, when welding on AC the welder actually cleans the base metal before the aluminum turns molten. It is simply a matter of application. This point brings to light the questions:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[728,90],'beginnerweldingguide_com-box-3','ezslot_2',194,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-box-3-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-box-3-0'];}; In this article, we will review the aluminum welding process. Cleanliness is next to godliness- Cleaning your weld surface and keeping everything you do as clean as possible when TIG welding makes a world of difference. Its been a long time since Ive welded. Also remember that there are many grades of aluminum which can change where you set the dial on the machine (IE- older low quality castings vs. fresh new plate aluminum). Elongation of these base metals is generally lower than that of other alloys listed. A slight leading angle allows the user to see the puddle, especially when adding filler. If you dont have a sense of urgency while TIG welding aluminum you will end up with a: This is where experience plays a big part under the welding helmet. 2006 - 2022 WeldGuru.com - All rights reserved. When the diameter of the electrode is changed, a wider range of heat input can be used at different metal thicknesses. The other thing that can happen is that the weld is shocked from going from hot to cold so quick in that it could develop hairline cracks in that last bit of weld that WILL spread (Crack is bad Mmmmkay?). (1) Recommendations are for plate of 0 temper. Now all that is needed is a heat source such as mapp gas or propane, a turbo tip and a brazing rod. This is insightful and relevant. The water cooled unit operates much like a radiator on a car. Tip: Mark your different brushes with Steel, Stainless, and Aluminum, so you dont get the different brushes mixed up. In the real-world aluminum joints exist in ultra-high requirement applications. TIG welding aluminum requires finesse: controlling multiple variables all at once in order to create a great weld. Remote controls allow the user to start hot and reduce amperage as the weld progresses. The process that Ive tried to get myself into over the years is when you get to the end of a weld puddle, add one last small dab of filler as you slowly let off of the pedal. For best results use AC (alternating current) at a high frequency (with high frequency the tungsten electrode doesnt need to come in contact with the aluminum, reducing contamination risk). Bad Form!- How you hold the TIG torch is a lot more important than some beginners realize. You have learned that TIG welding is a very manual process which takes ultimate concentration and skill, all of which can result in getting stressed and tense while creating your weld bead. As you can see, keeping your aluminum clean is very important. In the photos above you can see where I laid the torch down mid-weld and how much the puddle grew in size and then when I tilted it back up it slowly got smaller again. This helps keep Weldguru a free resource for our readers. You can see the brown halo around the weld and spatter of dirt that was forced from the weld. This can be mitigated somewhat by pre-heating the workpiece but to a limited extent. This means you will have to wait a few seconds before a puddle starts. What you save in money with cheap materials you will sacrifice in weld quality. Finish with water rinse and dry. Dip edge in strong alkaline solution, then water, then nitric acid. It may help to close your eyes for a moment and visualize the angles which your electrode, your filler rod, your electrode handle, and your foot pedal need to be throughout your the process.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'beginnerweldingguide_com-large-mobile-banner-1','ezslot_11',173,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-large-mobile-banner-1-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-large-mobile-banner-1-0'];}; If you start your weld without this type of visualization, there is a good chance that at a corner transition of your weld you might not use the correct angles and your weld might fail. Water is flowed through the torch and circulated through the cooler by a pump. Do you have all of your equipment set up for your welding operation? There is nothing wrong with using a quality TIG welder which has fewer features. These torches are typically smaller and less expensive. The difference between TIG welding and MIG welding equipment is drastic. You can see the pics above of an electrode that was overheated due to incorrect settings. Once you have a puddle thats the desired size you can begin to add a dab of filler rod, move forward half the puddles diameter and add another dab of filler. The most popular welding aluminum is either pure aluminum 1xxx or an aluminum manganese alloy 3003. Many times, a weld will come out looking poorly due to the welding operator not being comfortable. Such as:if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'beginnerweldingguide_com-large-leaderboard-2','ezslot_4',169,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-large-leaderboard-2-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-large-leaderboard-2-0'];}; Beginner welders probably dont need this level of welding machine. TIG welding and MIG welding can both achieve good welds in the aluminum material category. Can you recommend any welders that are low cost (capped around $300) and which a beginner like myself may be able to use effectively for ~1/8 thick aluminum welding? Why are these really nice aluminum welds so hard to achieve? Tip: Always use domestic (USA) melt source aluminum if your weld is critical. Thanks much. This time will vary on your amperage, clearance effect (AC Balace), and how clean your material is. I got really into welding almost 15 years ago. In the hands of a skilled welder, TIG looks better and seals better than MIG aluminum welding. Direct current is used as a limited alternative but results in higher heat levels on the electrode and poor oxide cleaning. But, they should be aware of the real-world implications. Some welders prefer a thicker glove similar to the popular Mechanics gloves. Step 2: Brush the surface of the aluminum material to remove aluminum oxides. Sometimes you are not able to get completely comfortable while performing your weld; for example, if you are welding out of position on a fixed workpiece. This oxidation will take a while to be visible to the naked eye, but its happening. If there is a wind or even a breeze, your shielding gas could be disappearing and not shielding your weld properly. Specifically the actions you will need to take in order for your weld to be successful. Cleaning your workpiece as much as possible can also help since the machine doesnt have to work as hard to clean the metal. Needless to say, bits of tungsten flying through the air while grinding your electrode are very hazardous. You can use acetone to clean the surface of the material. We will specifically focus on TIG welding, and provide welding tips along the way. Save my name, email, and website in this browser for the next time I comment. Get into a rhythm of creating the properly sized puddle, dipping your filer rod into the puddle, removing your filler rod, advancing your torch forward, and repeating. Without shielding gas surrounding your weld puddle, the natural atmosphere we breathe causes porosity and unclean welds. This procedure works for aluminum or any of the aluminum alloys. That is knowing how to adjust your welding parameters on the fly. Whether this means applying less amperage via your foot pedal, adjusting your torch angle, speeding up, slowing down, or a combination of variables. Additionally, if you dont use this type of visualization method, there is a good chance that a few inches into your weld bead when you have to adjust the position of your hands you might start using an incorrect electrode angle or filler rod angle. This is more precisely controlled by your foot pedal, of course. You will see a significant difference in price between domestic and non-domestic aluminum. This dial will change how long (were talking fractions of a second) the welder will stall on electrode positive to electrode negative to gain either more cleaning or more penetration into the workpiece. Jeff Grill hails from Long Island, a 118 mile stretch of land that starts just off the coast of Manhattan and stretches deep into the Atlantic ocean. At first the arc will turn a small circle of the metal white, then the area will increase in size and the eye of the puddle will begin get shiny and turn into a liquid. In the grand scheme of things the aluminum was clean but not enough for TIG welding. This bad habit can be tough to break if youre use to these other types of welding, but its necessary to break if you want to make sure your beautiful stack of dimes weld doesnt fail! Are different alloys able to be welded together? Do not be discouraged if you cannot achieve a good-looking aluminum weld bead after three or four weeks of trying. For example 6061 and 7005. They are identified in a 4 digit system with the first digit indicating the metal alloyed with the aluminum: Filler metals for TIG welding aluminum need to be high quality and without contamination. Especially considering the significant increase in cost. You are bound to eventually get frustrated with learning the welding process. The air cooled unit above simply uses the gas flow to cool the torch, therefore, care must be taken not to overheat the internal torch parts, especially when using high amperages. These types of welding its perfectly acceptable to immediately pull your welder away from the workpiece as soon as youre done welding. Tip: If your weld is cracking down the length of the bead, your workpiece could be getting too hot or your filler rod might be an incorrect match for your base material. There are so many small techniques and tidbits of experience which you need to learn in order to master the trade. It is important to perform this step before any brushing. The added shielding coverage when using a gas lens allows you to turn your setting more towards the negative side for a tighter arc and weld puddle. Unlike ferrous filler wire materials, the aluminum filler wire material does not have the rigidity to withstand being pushed or fed through the bends of a MIG cable up to the handle. These units can operate at higher amperages and for longer use. Our Low-VOC PRE and Acetone are safe to use, and are the preferred solvent to clean parts one last time before welding. If youre serious about TIG welding take a look at these under $1000. Most reputable online and local material suppliers will have domestic aluminum available for sale. Sometimes your technique could be spot-on, but your surrounding environment is causing your welds to suffer in quality. It is not a replacement for manufacturers directions and is only to provide reminders for experienced welders. See your owners manual for exact duty cycle ratings. Or, other surface cleaners specifically for aluminum preparation. Consider this your pre-flight checklist, similar to how pilots make sure their aircraft is in order before taking off. Step 1: Remove the oils and contaminants from the surface of the material. In this case, try to get as comfortable as possible stacking as many variables in your favor. Now go one step further and write down that setting so you can repeat it next time. Aluminum welds in these applications are closely scrutinized for quality before they are approved.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[300,250],'beginnerweldingguide_com-leader-3','ezslot_14',174,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-leader-3-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-leader-3-0'];}; Some of the high-end inspection methods include fluorescent penetrant inspection and x-ray inspection, at a basic level, looking for cracks in the weld. You are probably familiar with the appearance of a great aluminum weld. What is It Used For? The welding machine needs to either have been built for TIG welding (like these) or has the necessary accessories. Especially while grinding TIG welding electrodes. But if budget is not a concern these welders will increase your enjoyment of the welding experience. Always use a stainless-steel brush for this step. This is even more important with aluminum, taking extra steps to clean your parts as good as possible will help you make a clean and strong weld. You should take advantage of being able to sit down and weld. Since the use of MIG spool gun is not as common in this beginner welding category, this article focuses on the TIG welding process of welding aluminum. In this case the heat goes more into the torch itself. This is the case with all welding technologies, but especially in TIG welding when welding non-ferrous materials such as aluminum, titanium, and high nickel content superalloys.if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'beginnerweldingguide_com-mobile-leaderboard-2','ezslot_19',175,'0','0'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-mobile-leaderboard-2-0');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-mobile-leaderboard-2-0'];};if(typeof ez_ad_units!='undefined'){ez_ad_units.push([[250,250],'beginnerweldingguide_com-mobile-leaderboard-2','ezslot_20',175,'0','1'])};if(typeof __ez_fad_cmd!='undefined'){__ez_fad_cmd.push('div-gpt-ad-beginnerweldingguide_com-mobile-leaderboard-2-0_1');}else{__ez_fad_cmd=['div-gpt-ad-beginnerweldingguide_com-mobile-leaderboard-2-0_1'];};.mobile-leaderboard-2-multi-175{border:none!important;display:block!important;float:none;line-height:0;margin-bottom:15px!important;margin-left:0!important;margin-right:0!important;margin-top:15px!important;max-width:100%!important;min-height:250px;min-width:250px;padding:0;text-align:center!important}. I appreciate the information. The repair or fabrication of aluminum is done with aluminum brazing (lower cost, stronger welds), usingHTS-2000 brazing rods. Since welding aluminum is so challenging to master, it is immensely rewarding as a result. More economical welders use an air cooling system. The reason that the aluminum filler wire must be fed through the spool gun is quite simple. (3) For welded joints in 6061 and 6063 requiring maximum electrical conductivity use 4043 filler metal. Base Metal Tungsten Filler Rod Amperage for TIG welding aluminum, 0.010 0.035 0.040 0.024 0.030 5 25, 0.035 1/8 1/16 0.030 0.045 20 85, 3/32 1/4 3/32 1/16 3/32 50 180, 5/16 1/2 5/32 1/8 3/16 200 320. Economical TIG welders also cannot reach the higher amperages needed to weld extra thick pieces of material. A more simplistic approach which beginner welders can use is to see if the weld has any visible cracks, see if the weld is consistent from start to finish, and see if the root of the weld is the proper size. There are numerous conditions which you must be aware of while you are under your helmet and welding experience and skill will tell you how to fix issues on the fly. You will notice a major difference in your weld quality when welding a well-cleaned aluminum joint. The electrode should not be sharpened to a sharp point since the rough alternating current could cause the very tip of your electrode to break off and could fall into your weld. They do not have any special ways of cooling the TIG torch. Precision foot pedals (with better resolution), Heavier duty clamps and torch accessories, Aluminum naturally forms an oxide layer on its exterior surface while it is cooling off at the factory, Cleaning oils and contaminants on the surface left by handling the material, Make sure there is nothing around your workpiece that can catch fire, Ensure your current is set to Alternating Current (A.C.), Check your machine for the proper amount of coolant (if it is water-cooled), Tighten all connections on your TIG torch cable and hose, Examine the electrode so that it is both in good condition and has the proper amount of stick-out, Open the valve on your bottle of shielding gas, Set your shielding gas regulator to the proper amount of flow, Turn on and adjust your auto-darkening welding helmet, Heat affected zone that is out of control, Bend in your workpiece or a blow through the workpiece altogether.
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