How to make a TIG weld: 21 steps

wikiHow is a wiki, which means that many articles are written by several authors. To create this article, 17 people, some anonymous, participated in its edition and its improvement over time. There are 6 references cited in this article, they are at the bottom of the page. In this article: Prepare the “TIG” welding machine Perform the welding of the partsLearn different welds6 References In the “TIG” (Tungsten Inert Gas) welding process, the metal is heated with a tungsten electrode, while Protective gas, usually argon, protects the melt from impurities suspended in the air. This process produces high quality welds for most metals, including steel, stainless steel, chromoly, brass, magnesium, copper, nickel alloys, bronze, aluminum and gold. All you need to do is familiarize yourself with your “TIG” welding machine and start producing masterpieces now [1]! Part 1 Preparing the “TIG” welding machine 1 Wear safety equipment. Before starting your welding machine, be sure to wear safety goggles, a thick, fire-resistant welder’s clothing and a welder’s mask with eye protection. 2 Assemble the “TIG” welding torch. Torches of this type are equipped with a ceramic nozzle to guide the argon, a copper sleeve to hold the electrode and a cooling means. Secure the torch with the adapter provided in your accessory kit [2]. 3 Connect the pedal to the station. This pedal is used to control the temperature during welding. 4 Select the polarity. You can adjust the polarity of your post depending on the nature of the metal you are going to weld. If it is aluminum parts, set the selector switch to the position that corresponds to the alternating current (AC). On the other hand, if the parts to be welded are made of steel, choose the installation in direct polarity, that is to say in direct current-negative electrode (CCEN). If your welding machine is equipped with a high frequency system, consider adjusting the frequency. To weld aluminum, the selector must be in the high frequency continuous position. If you are welding steel, the position corresponds to high frequency at startup. 5 Turn the tungsten electrode. The size of the tungsten electrode depends on the thickness of the workpiece and the welding current. Be sure to grind the electrode radially around the circumference and not directly towards the ends. Use a pumice stone for sharpening. For added safety, work to orient the electrode in the same direction as the movement of the stone. Have a rounded end if the welding is done with alternating current or a sharp end if the welding current is direct current. If you make a corner weld or a butt weld, set the electrode to a 5 to 6 millimeter [3] rod. 6 Adjust the flow rate of the welding gas. You can use pure argon or mixed with helium. Remove the protective plastic cap. Purge the threaded valve body by opening and closing it quickly to remove foreign matter. Tighten the regulator screw. Tighten the nut by turning the regulator to fit it into the valve. Tighten the regulator with a wrench, making sure to turn the pressure knob counterclockwise. Connect the gas hose and flow meter, and open the tank valve. Be sure to open the tap slowly and gradually. It is usually enough to turn a quarter turn. Finally, check that there is no gas leak, either at the ear or by spraying a leak detector at the connections. Adjust the gas flow by acting on the regulator. The setting depends on the nature of the welding, however, it is generally between 4 and 12 liters per minute. 7 Adjust the intensity of the current. The intensity adjustment allows you to control the welding process. The greater the thickness of the parts to be welded, the higher the intensity will be. But if you correctly coordinate your action on the pedal, you will have fewer problems with the intensity. Here are some common values ​​of intensity in …


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