TIG welding aluminum is not as easy as it appears all sounds. It would require a lot of experience and patience if you want to do well in this field. The training of TIG welding aluminum itself is quite complex and needs expert guidance so that the finer points are grasped properly.
Here are some of the points that need to be that in mind during the course of welding. Most of the welding inverters come in the range of 115v or 230v power and it becomes very difficult for new personal to start welding on the thick aluminum castings using less amperage. In this case, the famous TIG welding aluminum trick is to understand that the 200 amps would make it possible for you to weld smarter and not hotter. Therefore, instead of aiming at setting the amp on high of 275 it is better to preheat the aluminum plates before starting to weld. It would drastically reduce amperage required and would achieve the desired results.
Some of the Other Tricks of TIG Welding Aluminum -
Made use of the gas grill for pre heating the various plates before trying to weld them. A cheap grill that is that is kept aside for this purpose is quite a good idea. Alternatively, Wrap the part that needs welding in an aluminum foil and keep it on a stove for a short time before you start welding.
Another tip that helps in reducing the amperage during welding is to use an argon/helium gas in an 80/20 or 50/50 ratio. The helium content in it is the one that makes all the difference. It would lead to less amperage, and as a bonus, the aluminum is liquefied quicker and remains cleaner than with just pure argon. Also, use as small a Tig cup that is possible during the welding. This is so because it requires less of shielding gas.
By following these little hints during welding, you would be surprised when you would be able to carry out the job at as low as 170 amps, despite the part being welded as massive.
TIG Welding Aluminum Training
It is important to carry out a formal training in TIG welding aluminum by starting on mild steel without using the filler material. Thereafter, start with running the Weld beads along with the filler metal. In addition, at the end, focus on the corner joints, lap joints, edge welds, butt joints, tee joints, in various positions.
In a conventional TIG welding aluminum curriculum, the part where Welding Aluminum is to be done is carried out only once the pupil has mastered the technique on steel since it is as aluminum is a much harder metal to weld than stainless steel or mild steel.
By following his techniques of TIG welding aluminum, the student would learn the right way of saving on material as well as carrying out the job, which looks perfect without any blemishes. It would also make the students more confident in handling any of the TIG welding aluminum tasks besides leading to enormous savings in the terms of welding effort and electricity.