Welding Aluminum: Explanation, Instructions And Tips |
Posted: July 7, 2020 |
To weld aluminum you need experience and a steady hand to achieve good results. Here we explain which equipment you need and how you can properly tackle the demanding work. A special feature when welding aluminum is the high thermal conductivity of the metal. This far exceeds that of other metals. Due to the increased conductivity, the heat expands quickly and large stresses can arise within the work piece. An uncontrolled war page occurs if unsuitable welding processes are used and wrong devices are used. Aluminum does not discolor during welding and therefore does not visually indicate when the melting point has been reached. A welding task with aluminum can therefore only be mastered safely with welding experience. If you have little experience so far, we recommend attending a welding course beforehand to learn the basics. If you want to teach yourself the welding process, it makes sense that you first practice it on a few pieces of aluminum waste and critically examine the result before you start the actual welding task. TIG and TIG: welding process for aluminum weldingTungsten inert gas welding machines (TIG) or tungsten inert gas welding machines (TIG) are best suited for welding aluminum. Tungsten is the English word for tungsten, so TIG and WIG are one and the same welding process. In the following we only speak of TIG welding because it is the German-language abbreviation. When welding aluminum with TIG welding machines, it is important that: Very few splashes develop , The health burden is low, The weld seams are of stable and high quality. Safety tip: To protect the respiratory tract and the entire body from gases, vapors, smoke and dust, you should always wear a suitable protective mask - also during the cleaning process. Also ensure that there is sufficient ventilation in the workplace. Guide: How does TIG welding work?In TIG welding, the welding point is shielded by inert gas - it prevents chemical reactions of the aluminum with the atmospheric oxygen and other gases. Argon or helium can be used as protective gas. Helium is more expensive, but has a higher thermal conductivity. A mixture of argon and helium is ideal. The shielding gas is fed directly to the welding point via a nozzle. The parts can be neatly connected using an aluminum welding rod. It is important that you work precisely and cleanly, because dirt or rust at the welding points cause unstable connections. Check out our website for effective information about Tools Topic right now. TIG welding: step by step instructionsPut on protective clothing and provide an environment that is free of flammable materials. Since you work with gas, you need a sheltered workplace. Outdoor TIG welding is not advisable because a gust could unexpectedly tear the protective gas envelope. The result would be an unclean, fragile seam. If necessary, the surfaces should be processed with grinders. Above all, sharp, so-called root edges on the joints of the two workpieces to be connected must be removed. You can easily round off the sharp-edged corners and burrs after cutting the material with a belt sander. If this does not happen, there is a risk that the weld seam will tear on the underside and become unstable. If necessary, sharpen the tungsten electrode lengthways. Connect the earth cable of the welding machine to a bare area of the aluminum.
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