Essential TIG Welding Procedures Every Welder Should Know

Mastering Tungsten Inert Gas TIG welding procedure requires skill, patience, and perseverance to gain excellent output. The advancement in the welding equipment and welding technique had transformed in recent years, that it requires welding training as a crucial curriculum. Many industries and manufacturing processes now require vigorous training to gain a competitive edge.

The welders need to master TIG welding procedure because it is more precise and versatile than others. The industries that use this process of welding include automative, aerospace, and manufacturing. Mastering TIG welding process has become so crucial procedure to produce high-quality welds for welders.

Here we’ll discuss all fundamental procedures that every welder should know:

Preparation of Workpiece is Essential:

Before you start with your welding process, preparation of the workpiece is essential. This includes cleaning the surface properly to remove any dirt, oil, rust, debris or any other contaminants that could affect the welding process. Make preparation is done properly because poorer the preparation poorer the results. If cleaning with cloth is difficult, use wire brush or even grinder. Additionally proper joint preparation is also crucial such as bevelling or chamfering.

Choosing the Right Type of Tungsten Electrode:

There is a variety of tungsten electrode in various compositions, depending upon the material welded, welding current, welding characteristics. The process uses six electrodes such as pure tungsten, thoriated, ceriated, lanthanated, zirconiated tungsten, and rare earth.

Choosing the Accurate Welding Current:

TIG welding procedure require a direct current power source, either with straight (DCEN) or reverse polarity (DCEP). At DCEN the electrode is negative which is suitable for steel and stainless steel. Whereas at DCEP the electrode positive which is suitable for aluminium and other non-ferrous metals. Using current as per the material thickness and type confirms proper heat input and weld penetration.

Supply of Shielding Gases:

TIG welding procedure depends on the supply of shielding gas to protect the weld pool from the atmospheric impurities. The type of gas, argon or helium, also depends upon the heat transfer at the workpiece. Helium is used for the thick metal because it transfers more heat and mixture of argon and helium is used in thin metals.

Arrangements of Weld Pool and Heat Input:

Correcting the size and shape of the weld pool for achieving high-quality results in TIG welding procedure is must-have essentials. Correct torch angle, travel speed, and filler metal deposition are important to manage the weld pool and control the heat input to prevent distortion or warping of the workpiece.

Maintaining the Correct Arc Length and Travel Speed:

The optimal arc length is essential for gaining a stable arc, it should neither be too long nor too short. Similarly, controlling the travel speed is also crucial to adjust heat input, that way it will prevent overheating or underfilling of the weld joint.

Post-Weld Cleaning and Inspection is Essential:

When you have finished weld procedure, thorough cleaning of the welded area is essential and also to remove slags, spatters or surface impurities. Inspect the weld area for any cracks, porosity or any incomplete fusion which is necessary to maintain weld quality standards.

Ensuring welding procedure safety:

Use welding procedural safety standards and check the rules on material and machines.

To conclude upon Mastering TIG welding procedures:

Mastering TIG welding procedures is most desirable process and it is gaining importance in the industries. The equipment for TIG welding is undoubtedly complex and expensive but results are par excellence. By implementing these techniques effectively, welders can work reliably to produce good quality welds by meeting industry standards and specifications.