The versatility of TIG welding allows professionals to weld a wide range of thin and small materials. Using non-consumable tungsten electrodes, the heating process can be performed with or without fillers. In short, TIG Welding is a process to join the broken parts of the metals like Aluminum, Copper, Stainless Steel, and Roll Cages. The Gas Tungsten Arc Weld (GTAW) method is usually used when precise, high-quality, and clean welds are required. To weld, the workpiece, an electrode made of non-consumable tungsten metal is used. To protect the electrode from contamination, the tungsten melting torch shields the gas flow through it. Here you will learn What Is TIG Welding.
What is TIG Welding
The beginners often remain to confuse that what is TIG welder or welding? The welder controls the amperage by pressing a foot pedal. To fill the joints, the filler metal is dipped by hand into the weld pool. When working with filler metal, no excess spatter occurs since no flux is involved in the process. It is also known as Gas Tungsten Arc Welding (GTAW). GTAW welding has great importance in the welding field.
Pros of TIG welding:
- You get much greater control over the welding process with high weld quality.
- Spatter reduction
- Distortion is low
Cons of TIG welding:
- Costly operation
- Needs to be more dexterous
- Low filler deposition rate results in slow welding speed
TIG Welding Setup
Once you become a TIG welder, you will get a bunch of TIG welding jobs opportunities all over the world. If you want to know how to TIG weld, you must know how to set up TIG welding. You can find instructions for Tungsten inert gas welding below.
TIG Torch Setup
To begin with, you should mount your torch. There are four components necessary to construct a TIG torch and one tungsten electrode. Torch bodies hold collets, collet bodies, back caps, and cups. Furthermore, these components keep the electrode in place. We place and distribute the shielding gas. In TIG torches, the tungsten electrode must be matched with the collet and the collet body.
It holds the electrode in place and distributes shielding gas with the help of the collet body. In this design, both the collet and gas cup will be located on the front.
The collet connects the TIG torch and electrode. The Collet must match the electrode’s size to transfer current smoothly.
How much shielding gas goes into the weld pool is controlled by the TIG cup. In order to select the cup size, we use the common size. Depending on the diameter of the cup, you will also hold your torch at a different angle. Each TIG cup size diameter has a corresponding number.
- The inside diameter of size 4 is 4/16
- Size 5: inside diameter, 5/16″
- Size 6: Inside diameter is 6/16″
- Inside diameter 7/16
In terms of welding, the tungsten electrode creates the arc by channeling the amperage. When screwed into the gun, the collet holds it in place.
Moreover, If you are welding something else, you will see a different color on the electrode. Steel TIG welding electrodes usually feature 2% thoriated red electrodes, but they aren’t suitable for aluminum. The green color comes from pure tungsten. In steel and aluminum, purple is OK.
You’ll also encounter difficulty getting a tight arc if the tungsten tig isn’t ground to a point. By touching the work metal with the tungsten tig, you will damage the tip, which will need to be reground before you continue welding. To ensure that the electrode tip does not touch the workpiece, position it just above it.
In addition to that, The diameter of electrodes ranges from 1/16″ to 3/32″. The filler rod diameter must be the same as this. Also, depending on the amount of filler metal you will deposit in the welding pool, determine the electrode and filler rod diameters.
Inserting the electrode into the TIG torch should give it a width of between 1 inch and 3 inches. The “stick out” is the distance between an electrode’s tip and the front of its cup. There are 14 to 12-inch stockouts on most of the grille. A stick out’s diameter cannot exceed 1.5 times the cups. Shorter stockouts may be more beneficial for beginners. The electrode will not angle into the weld correctly if it has a long stick out and won’t penetrate efficiently.
You can add the filler to the joint, bit by bit, holding the torch and the other holding the filler rod. During the ensuing deposition of the filler metal, you are able to control the amount precisely. Despite this, Filler rods should have an angle of approximately 15° relative to the work metal. Inject the filler metal slowly and carefully into the weld pool.
Furthermore, choose the filler rod that matches the metal you’re using from a wide variety of filler rods. Stainless steel, mild steel, and aluminum each have different types. In general, 3/32″ and 1/16″ diameter filler rods are used; the thinner rods are meant for welds in tight areas, while thicker rods are used for more filler metal deposition. The diameter of the filler rod must match that of the electrode.
A TIG welder will be your power source. It will be connected to the TIG torch, the TIG pedal, and the welding clamp. Use DC electrode negative for DC TIG welding steel. You should use AC to weld aluminum. A copy of your TIG welder’s operating manual provides detailed instructions on how to use it and the settings. Welders who TIG can be found here.
A welding machine uses foot pedals to control heat. You get more heat the harder you press the pedal. Before welding your workpiece, try controlling the heat first. To avoid shrinkage and expansion of the weld, keep the heat consistent.
Shielding gas is used to prevent contamination of TIG torches. TIG welding with 100% argon prevents you from using your MIG gas. Using argon/helium mixtures can also add heat, and using argon/hydrogen mixtures can also yield heat and hydrogen cracking may result.
Workpieces should be free of anything that can cause damage, such as paints, grease, oil, zinc, etc. You must perform the weld onto clean, shiny metal free from any impurities.
Performing the TIG weld
You’re ready to start TIG welding when all your equipment has been set up. After scratching the tungsten, adding filler wire into the joint will allow the arc to begin.
It walks you through how to move and hold the torch. As a general rule, you should aim for welding with the torch set at 10-20 degrees above and below vertical. It can also make it easier to add filler metal because the weld pool gets formed right before the torch.
TIG welding speed
A TIG weld takes much longer than a MIG or sticks weld. Starting a business is usually more challenging than expected as so many unknowns exist. As the torch travels across the filler metal, it stops at a rate of approximately 1mm/second. Your hand will be more stable if you place it on the table while you work. For an excellent TIG welding technique, check out the information already discussed
Feeding the TIG Filler Rods
To TIG weld, you should feed the filler wire through your fingertips first. As long as your fingers are kept away from the arc, and the wire is held comfortably, you can feed it you like. Keep your hand far away from the arc when holding the filler wire. Keeping it in the weld pool will become more difficult as it gets shorter. Cutting them in half makes handling them easier.
MIG and stick welding create sparks and spatter. TIG welding does not. However, the arc of the arc creates dangerous ultraviolet rays. Helmets, welding jackets, and gloves that darken automatically are essential. To feed the filler rod successfully, you will usually need to wear gloves with more excellent dexterity. Before welding, be sure to read the safety guidelines for all of your equipment, and don’t substitute this for information in your operating manual.
Proconsumption also provides information about how does tig welding works.
Frequently Asked Questions
What does tig stand for in welding?
Tungsten inert gas
The tungsten inert gas (TIG) welding process, also known as gas tungsten arc welding (GTAW), provides a flexible and safe method to secure some of the world’s most important equipment. A non-consumable tungsten electrode is used in the TIG welding process.
What is TIG welding used for?
In addition to welding steel, chrome, nickel alloys, stainless steel, aluminum, magnesium, copper, brass, bronze, and even gold. The TIG welders can also join other metals such as brass, chrome, and bronze. The TIG welding process is beneficial when welding wagons, bike frames, lawnmowers, door handles, and fenders, among other items.
Currently, filaments are used in bulbs and cathode ray tubes as electrodes, heating elements, and field emitters. Tools made from cutting steel and other metal alloys, including tungsten, are commonly used. Also, superalloys are coated with it to make them wear-resistant.
Is TIG welding hard to learn?
TIG, or gas tungsten arc welding (GTAW), is frequently specified to meet aesthetic, structural, or code/standard specifications. TIG is a highly complex process that is undoubtedly the most difficult to learn.
Can you learn TIG on your own?
You should not try to learn TIG by yourself since it is not easy to do. The welding programs have also been dramatically reduced or eliminated. A few community colleges still offer introductory courses, which is good news if you’re looking to learn the TIG welding basics quickly.
Can you TIG weld at home?
When tackling home projects or indoor installations, TIG welding is an excellent choice. The welder usually wants to have his workspace or even designate their basement as a welding area. On the other hand, TIG welding doesn’t produce sparks and spatter as MIG and Stick welding do.
How safe is TIG welding?
When it comes to safety and health, TIG welding shielding gases are, at least for almost all purposes, inert. During welding, it does not emit ionizing radiation. After welding has ended, burns to the skin and eyes can take some time to manifest themselves due to exposure to arc radiation.
We have comprehensively described what is TIG welding and how you can perform TIG welding accurately and safely. Suppose you are still confused about it. You can ask in the comment section. If you want to become a professional in a short time, you have to learn the TIG welding Tips to upgrade your knowledge and increase your experience.