At Davies Industrial & Welding Supplies we are proud to stock a large variety of TIG welding machines from industry leading brands. All of our TIG welders are of excellent build quality and have very competitive prices. If you have any questions about our TIG welding machines our friendly knowledgeable team will more than happy to help.
Do you require TIG welders in Oxford or the surrounding areas? Please call us on 01608 666110 or use the contact form to forward you query.
TIG (Tungsten Inert Gas) welding is the preferred method if you require the weld to be precise and clean. It's applications are the most versatile amongst the different welding processes, suitable for mild steel, aluminium, iron and brass which can only welded with TIG welding. It's also the most difficult welding process to learn as it requires coordination with two-hands. One hand holds the torch and the other feeds the filler metal, the arc voltage is typically controlled with a foot petal or a fingertip remote to precisely manage the welding temperature. Like MIG welding, a non-reactive shielding gas such as argon is needed.
TIG Welding Techniques
It's critical in TIG welding that the distance between the electrode and the base metal is controlled to be within 1mm. A good welding position is important and will help the control of the torch. It's recommended that you don't carry out TIG welding directly after hammering and other physical activities because of the precise controls required. A comfortable workshop temperature is also recommended.
A beginner can start with striking the arc on a flat sheet of steel and learning how to maintain the arc and it's relation to the weld puddle. Next, try welding on the surface of the sheet without a filler rod, this exercise will help you understand how the welding puddle moves and maintaining the arc length. You can use the reflection of the tungsten in the weld pool to gauge the current arc length. As you become more familiar with the process, it becomes easier to determine the arc length by the width and length of the arc itself.
Next you can start adding the filler wire. It's added to the very front of the weld pool- it's melted by the weld pool, not the arc itself. Adding the filler rod will cool the weld pool. Remember to keep the filler rod low- it will prematurely melt if it's held too high, this will also happen if the arc length is too long.
At the end of the weld, the torch is switched off and brought back a little. It's held in position until the post-flow gas has stopped. The post flow gas protects the tungsten and the end of the weld pool.