An In-Depth Guide on TIG Welding
TIG is the most efficient and widely used method today. It is safe, reliable and most importantly gives you the perfect welding. However, in order to master the skill of TIG welding, here are the things you must know before you start your training to become the best TIG welder.
What is TIG Welding?
TIG welding deserves a red carpet when we talk about manual arc welding. Today, quality and standard is something that has become most important. Along with the quality and standard calculations, TIG welding method has got itself the most extraordinary reviews when it comes to the issue of safety.
It is also called GTAW which is Gas Tungsten Inert Gas, the method where you use inert gas for welding. The use of argon as the inert gas protects the weld puddle from contaminations during the welding process. TIG process is the hardest process to learn and the efficiency can be achieved only after a long training.
While using TIG process to weld, filler material is continuously dipped into the wedding pool in order to join the pieces together. During the process a steady and nice pace is to be followed to dip the feeder material. Along with the pace, a good angle and distance between the electrode and the sheet metal is also very important. As if we fail to do so, your weld will not turn out to be the efficient one. The most important thing after welding is the cooling process of the torch. In case of TIG the welding torch can be both air cooled and water cooled. If it is done at low amperes, the air cooling will do. However, if heavy welding is to take place, a water cooling machine is what you need.
Materials That Can Be Welded
The most wonderful benefit of the TIG welding is the liberty that it provides to use various metals that can be joined with it. The use of stainless steel and carbon steel is however, the most used ones. It is also possible to join non-ferrous metals as aluminium, copper and magnesium. The only thing that must be kept in mind is the current that must be used as it is different for different materials. In order to weld Carbon or stainless steel, DC (Direct Current) is used, while joining metals like Aluminium which requires highest quality AC current is the most preferable.
Advantages and Disadvantages
There are advantages and the disadvantages that you must be aware of about the TIG welding. TIG gives you the highest possible quality of weld that can be achievable. When we compare the cracks found after the welding, TIG outruns the other well-known welding methods during the inspections and x- rays done. The technique if used properly and in the right way, the weld looks really good.
The foremost disadvantage it is its slower welding process. It works wonders on thin sheet metal and pipes but it takes time to finish the welding on thicker pipes and is not really economical.
As said it takes time to master the skill of TIG welding, there are few rules which if followed can make the job easier.
Tricks to Follow to TIG Weld Easily
- The TIG welding doesn’t require the high amperes as said in some thumb rules about welding. It requires fewer amperes as compared to other welding techniques.
- Try to make sure that you do not keep the TIG torch lighted up for long before your welding work starts. As soon as you light the torch, make sure the torch is not left lighted up without any use. This is important aspect of the TIG welding as if you keep the torch lighted up when there is some time left to start the weld, it will increase the heat flow and high ampere which means distortion. A distortion takes place with the high flow of heat as it creates a puddle in the head of the torch. This is why, the low heat and low ampere formula needs to be kept in mind.
- The use of the carbon brushes would make your weld look fine for a few days. After a few days you would really not feel good about your decision of taking the shortcut as the weld will rust soon.
- The use of Gas lens is the best way to safeguard your weld while using the TIG welding technique. Gas shielding is required to protect the very important part of your instrument, which is the tip torch and also the TIG rod which may be joined with stainless steel or any non- ferrous metal for that part. The protection is required to save your weld from distortion due to the oxidation, which occurs if the flow of the heat is at a higher rate than required.
- A long arc is not always the solution. Not in the case of the TIG welding technique. Welding using the extensive arc will cause the tip of the filler create an unwanted blob and this is obviously not what you may want.
- Chasing the puddle is not the ideal thing to do while welding the sheet metal. The wandering of the puddle may happen due to many reasons. The pulling force of the field is created due the pull of the magnets or the heat sinks. Go ahead, instead of wasting your time behind the puddle.
Keep these simple facts in mind and enjoy a stress free welding.