What is TIG Welding?
TIG welding produces temperatures up to 35,000 degrees Fahrenheit, yet this concentrated heat can be precisely controlled and directed. When filler metal is required, it can be added manually by feeding welding rod into the puddle, similar to oxy-acetylene welding. In fact, people who have learned to oxy-acetylene weld will usually pick up TIG welding fairly easily. TIG welding is done with a hand-held torch that holds the slender electrode the welding current passes through. The electrode is surrounded by a ceramic cup which directs the flow of an inert shielding gas (usually argon) that keeps atmospheric oxygen away from the weld zone. Most machines have a control, either foot or hand-operated, that allows you to change the welding current ‘on the fly’. These features offer unrivaled control of all aspects of the welding process, and a skilled operator can make a weld that has good penetration with a small, crisply-defined, low-profile weld bead which is quite ductile, or workable. T
Tungsten inert gas (TIG) welding is the process of blending together reactive metals such as magnesium and aluminum. The TIG welding method became popular and useful in the early 1940s and, as a result, has greatly propelled the use of aluminum for welding and structural processes. TIG welding is commonly used for both high quality and manual welding. During the process of TIG welding, an arc is formed between a pointed tungsten electrode and the area to be welded. As a result of the gas shield, a clean weld is formed. This prevents oxidization from occurring. The type of gas shielding typically used for TIG welding is argon, helium, or a combination of both. When combined, these two gases can ensure a higher welding speed and welding penetration. Argon is the preference of most welders when it comes to TIG welding. It is often used simply because it is heavier than air and provides better coverage when welding. With TIG welding, one can perform a variety of weld types on several diffe
The acronym TIG stands for Tungsten Inert Gas welding. It is also referred to as GTAW (Gas Tungsten Arc Welding) and by the term Heliarc® which was the Linde Company’s trade name for the TIG process when it was originally introduced. The arc is started with a sharply pointed tungsten electrode shielded by inert gas. A separate filler rod is fed manually into the weld puddle in much the same way as is done when gas welding. TIG is a slower process than MIG welding, but it produces a more precise weld and can be used at lower amperages (for welding thin metal) and it can be used on a variety of metals (including aluminum, chrome moly, etc.) and is excellent for highly intricate work.
TIG welding is a shortened name for Tungsten Inert Gas welding process. The AWS official name is Gas Tungsten Arc Welding or GTAW. Names such as HeliArc or Heliweld are “brand” names given to this process by manufacturers of TIG machines or supplies. TIG welding is a shielded arc welding process very similar to MIG (wire) welding except that the arc is not provided by consumable wire but a non-consumable tungsten electrode. On TIG weld joints requiring filler or reinforcement, filler metal is added from outside of the arc either by hand or small, automatic filler rod feeders. As said previously, the TIG welding process uses a tungsten electrode to conduct electric current to the arc, creating a very precise and local heat zone. This makes the TIG welding process ideal for use where it is critical not to heat very large areas. The TIG weld puddle and electrode are protected from atmospheric contaminants by a shield of inert gas. The inert gases used in this process are Helium and/or Arg
Video Transcript What is Tig Welding? Hello! My name is Mac and on behalf of expertvillage.com I am here to discuss the art of TIG welding. Now TIG welding is an arc welding process that is used mostly in the nuclear power industry or the food and beverage or pharmaceutical industries to produce very high purity welds. Unlike MIG welding where you use a coil of continuous metal electrode that is fed through the gun. The TIG welding electrode is non-consumable. It is not used to provide the filler metal for the arc welding puddle. It merely supplies the electricity to the arc inside of a cloud of inert gas that causes the base metal to be melted. The metal for the weld puddle is supplied with your free hand, holding a piece of TIG welding wire. This is a very high quality steel TIG welding wire and the process is such that you use the TIG torch to create a molten puddle on the parent metal and add filler wire with your free hand. This process can be used for welding stainless steel, car
