How To Weld Aluminum With A Dc Tig Welder

Should YOU Try TIG Welding Aluminum on DC Power. AC refers to Alternating Current This is in contrast to Direct Current.

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This isnt a process to dive into if youre just getting the hang of TIG welding.

How to weld aluminum with a dc tig welder. As said above the only way to weld aluminum and magnesium with the TIG process is on the alternating current. TIG welding also uses shielding gas for protecting the overall process from atmospheric contamination. Use DC reverse polarity the electrode will be positive while the base plate is negative.

This page focuses on welding aluminum with a DC TIG welder electrode negative DCEN argon and flux. TIG welding will require you to use both hands so make sure that youre wearing a suitable pair of welding safety gloves and a welding helmet to protect yourself while keeping your hands free. Focus on cleaning your metal properly using your foot pedal and keeping a close eye on the weld puddle.

DCEN should provide good penetration. Meaning welding a base material that is 125mm or 18 thick would need 125 amps. AC mode gives the best results for aluminum welding DC can also be used but the quality will be compromised.

Some of the basic rules are using optimum polarity adjust the balance control setting up output frequency and using appropriate amperage. Doing so will give you burn-throughs and result in weak or ugly welds. If you have to do a job in DC with thinner materials you will have to be careful not to boil the Aluminum.

The flux cleans oxides from the aluminum and it helps shield the molten puddle. Tungsten inert gas welder which is commonly abbreviated as TIG is one of the many different commonly used method in the welding industryThis welding technique only utilizes tungsten electrode which isnt consumable. Since youre going to weld aluminum using TIG welding youll need to choose either the DC positive or DC negative power.

Once the material has a thickness of over ¼ inch the rule of the thumb starts to deviate and not as much amp is needed. The rule of thumb for TIG aluminum is to use 1 Ampere for every thousandth of material thickness. If you had DC TIG however and wanted to make it weld aluminum though and could access the back side of the joint for mechanically removing flux in addition to the front which since youre able to strike an arc you should likely be able to access well enough for flux removal look into using a stick welding electrode with the flux covering.

In order to achieve an appropriate weld on aluminum you will need to have an AC capable TIG welder such as the Weldpro TIG 200. Firstly you need to get your flux-coated aluminum electrode ready prepare the base metal set the current and polarity on the welding machine right and start welding. During the process the weld is covered by an area of the inert atmosphere with no oxidation and it also requires a filler metal.

Thick aluminum parts where distortion limitations are tight large aluminum parts that would otherwise need to be preheated tack welding thick aluminum to prevent cracking of tack welds. The preferred method is AC because people do not know what they are doing when it comes to aluminum DC plain and simple. One of the most important aspects of welding aluminum is having the correct welding machine.

The DC Direct Current is suitable for welding thicker materials like steel and stainless steel. So some applications for tig welding aluminum using DC are. The argon cools the TIG torch shields the tungsten and stabilizes the arc.

DC TIG aluminum welding is possible with a DCEN setting and pure helium. Its designed primarily for oxy-fuel welding aluminum but TIG. For my testing I used TM Technologies Premium Aluminum Gas Welding Flux.

On one hand youll be holding the electrode holder while the filler rod will be held in your other hand. However it takes advanced knowledge to do it and welders usually dont do this. Most high-power machines have DC capability but because of its low melting point and other special features it cannot be used to weld thin materials like aluminum.

This includes argon and a slight composition of helium gas. The ideal scenario for TIG welding aluminum on DC involves materials of ¼ thickness or greater. Lets run through how you can stick weld aluminum.

3What current do you use to weld aluminum. If you intend to weld aluminum with your TIG welder then the AC capability is a must-have. A TIG welder basically comes with both AC and DC power options.

For this to work the aluminum needs to be incredibly clear. The ideal scenario for TIG welding aluminum on DC involves 6061 alloy and 4043 filler rods. How to TIG Weld Aluminium.

Yes aluminum can be welded with DC and pass whatever tests given all day long. The one point of consensus youll find online is that the welders who make DC TIG welding work the best on aluminum are welders with a lot of experience. You can also get pretty good results on the 1100 series pure Aluminum.

The current type of aluminum welding should always be AC welding. This is because aluminum has basically two layers the base aluminum and aluminum oxide. How to setup tig welder for aluminum.

Tig Welding on AC.

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