TIG welding step by step
Construction and renovation

TIG welding step by step

It takes approx. 5 minutes to read this article

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TIG welding is a technology that offers many possibilities for joining a wide variety of metals while providing a high aesthetic finish. It is also one of the most popular welding methods, especially among beginners because, to get a good quality weld, you only need a little skill and practice. In this article we tell you how to TIG weld step by step to get the best results. With the right equipment it is easier than it seems.

Advantages of TIG welding

At the beginning a little theory. Tig welding, simply put, is a method of welding with a non-fusible tungsten electrode in a shield of inert gases such as argon, helium or mixtures of these. It is a very versatile method, as it allows the joining of almost all metals in the widest variety of positions. In addition, this option allows welding of thin sheets, even from 0.5 mm. It is characterized by high quality and cleanliness of the weld and also allows the welder to easily control the so-called weld pool, heat quantity and additional material. This welding method is quite easy to learn even for beginners

Disadvantages of TIG welding

Although it is difficult to talk about any significant disadvantages, it is worth mentioning that the tig welding method is mainly used for welding thin parts. It is characterized by low speed and low productivity, and the quality of the welds depends on the skill of the welder. With time and the right equipment, it is certainly possible to achieve perfection.

Applications

Tig welding has many uses. With this method we can obtain a clean and high quality weld, because during the welding process no slag is precipitated, which causes contamination of the weld. This type of welding is most often used to join stainless steel and other high-alloy steels and materials such as copper, titanium, aluminium and nickel. Tig welding is most commonly used in the food, chemical, automotive and aviation industries for welding tubes and thin sheets.

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The right equipment is essential

Whether welding professionally or for personal use, good equipment is a must. The choices are vast, depending on what field the particular welder will be working in. A welding machine used in large-scale industry will have different criteria than one used in a domestic environment. The welder that you want to operate yourself should be primarily dedicated to welding steel or aluminum. TIG welders are most often chosen because of their ease of use. When choosing the right equipment, pay attention to the value of the current that will be needed for welding and the parameters of the material. Almost every material has an estimated value, which allows you to predetermine your needs when choosing the right model of welder. It is also advisable to seek advice from professionals and find a store where you can get the necessary information and advice before buying

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Photo by 加藤 俊 from Pixabay.com

Welding step by step

  1. Position Preparation. Proper preparation is the material you will be welding and TIG welder, that is, the current source with control system and TIG holder, as well as shielding gas and cooling system. In addition, you need to choose flux, clamp and ground wire, which connects the welded workpiece to the current source. Also do not forget about personal protective equipment: face shield and gloves.
  1. Preparation of the workpiece. Before starting work, you need to properly prepare the material to be welded. The guarantee of a good quality weld is to clean the material of any impurities such as rust, paint or grease. The fastest way to do this job is to manually wipe off the dirt
  1. Setting the appropriate parameters. The type of welding current and its intensity depends on the diameter of the electrode and the type and thickness of the welded material, so before starting work we should check all these elements and adjust them. It is worth knowing that the TIG method is divided into two options, depending on the type and polarity of the welding current. The most commonly used is the negative polarity.
  1. Welding. Turn on the device and then rub the electrode on the metal parts to be welded. In an “intermittent” manner, with one hand we push the welding gun, and with the other we feed the welding material, i.e. the rod. The welding rod is then pushed into the weld pool, which was created by heating with a stationary electrode, and then pushed back. Once the rod is pushed back, the arc is moved, pushed along the direction of welding.

Summary

With the right equipment and for TIG welding and a minimum of skills, you can, in an unlimited way, join different groups of materials such as alloyed and unalloyed steels, aluminum including its alloys, magnesium alloys, nickel alloys and titanium alloys.

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