Is Aluminum Easy or Difficult To Weld?
- Author Dan Frankian
- Published August 24, 2022
- Word count 554
Welding aluminum requires specific techniques, shielding gasses, specifications, and pre-weld and post-weld processing compared to other materials. Thankfully through the correct application, aluminum can be welded with ease as long as one ensures they are using the recommended method.
Aluminum can be difficult to weld for various reasons. Alloys such as 6061 experience solidification cracking when welded without a filler metal, for example. Alloys like a 6061 used with a 6061 filler metal can result in weld failure, highlighting the need to select the right filler metal.
Another challenge with aluminum is feeding. When a mechanical wire feeding process is used, additional special drive systems will be needed to ensure the aluminum does not buckle and tangle.
There are also other things to weigh when it comes to how to weld aluminum. Aluminum has greater thermal conductivity than steel which means full penetration may not occur in welding until the weld has progressed far enough from the start, otherwise known as a ‘cold open’. Aluminum is susceptible to crater cracking also requiring craters to be filled in so that failure doesn’t occur at the tail end of a weld.
There are 4 types of welding used for aluminum. There’s GTAW/TIG, GMAW/MIG, laser beam & electron beam welding, and resistance welding.
GTAW/TIG
Gas tungsten arc welding (GTAW), sometimes referred to as ‘tungsten inert gas welding, is the most popular welding process used with aluminum. GTAW is a recommended choice for aluminum as it does not require mechanical wire feeding. In its place, filler material is fed by the welder with his hand. GTAW welding on aluminum is also known as very clean with prevents unintended contamination.
GMAW/MIG
Gas metal arc welding (GMAW), otherwise referred to as ‘metal inert gas’ welding has higher deposition rates and faster travel speeds than GTAW. The drawback is that it does use a mechanical wire feeding system, requiring a push-pull gun or spool gun. It’s key with GMAW aluminum welding not to use 100% CO2 or 75% Argon/25% CO2 shielding gas. Although these gases are excellent for steel, aluminum cannot handle reactivity.
Laser beam and electron beam
Beam welding can handle aluminum, in many cases. The power density of beam welding processes is high, which thankfully means cold starts aren’t usually a concern. With laser welding, material light reflectivity can be something to weigh. Shielding gas optimization is also recommended to eliminate the risk of porosity.
However, in electron beam welding, you don’t encounter the same issues as the process does not use light as an energy medium.
Resistance welding
Resistance welding is the least likely method of welding aluminum as difficulties can arise in the electrical and thermal conductivity of the material. Parameter development time can be significant and special resistance welding equipment may be required to overcome these challenges.
Processes not recommended for welding
For welding aluminum, other than the aforementioned 4 processes, it is rare for other welding processes to be recommended. Stick welding, flux cored arc welding, and submerged arc welding are not effective ways of treating aluminum. Oftentimes, these methods create large amounts of porosity which is not preferred.
The type of welding used on aluminum matters a lot. Welding aluminum with the wrong specifications can easily result in failure. Any welder working with aluminum always wants to ensure best practices are being followed.
Aaluminum Sheet & Wire is the supplier of quality Canadian Aluminum Coil in Canada and The USA. https://aaluminum.com/about-us/
Call us at Toll-Free: 866-860-0652 or leave a message here: https://aaluminum.com/contact-us/
Article source: https://articlebiz.comRate article
Article comments
There are no posted comments.
Related articles
- Exclusive Interview with Maddox Blackstone
- The Dark Reality of Forced Prison Labor: Why I Stand Behind Proposition 6
- From Luxury To Necessity: The Rise Of Electric Golf Carts In Community Planning
- 7 Natural Solutions For A Grease-Free Kitchen
- Emotional Resonance: How Music Evokes Feelings And Memories
- The Ultimate Guide to Motion Graphics in Manchester: Elevate Your Brand with Stunning Visuals
- What is the legacy of the Nazi, Joseph Goebbels?
- The Art and Science of Garden Design
- BNPL vs Traditional Lending: Which Is the Better Option for Today’s Consumers?
- Chauffeur Services in Malaysia: A Comprehensive Overview
- How to prepare the feet for going on a long hike?
- How to find rare coins for your collection?
- 10 Powerful Benefits of Consistent Ice Bath Sessions
- Illuminating Your Spaces: The Role of Lighting Specialists in Brampton, Mississauga, and Caledon
- How to Resolve Differences in the Workplace Without Argument
- Why Small to Large Companies Continue to Use Dated/Dinosaur Technology
- Are You Unknowingly Signing Away Your Mechanic Lien Rights?
- What could be done in the future to help manage Autism Spectrum Disorder?
- Best Dog Food for small dogs.
- Paris Hilton loves small dogs
- How Anyone Can Start an Online Business Selling Digital Products
- Maximizing Your Travel Experience with Travel-Bookmarks.com: A Free Travel Social Bookmarking Site
- Are Saint Laurent and YSL the Same?
- How to Know if a YSL Bag is Real?
- Does Gucci Have a Lifetime Guarantee?
- Where Are Gucci Bamboo Bags Made?
- Vintage Furniture Trends: Armoires, Rustic Mid-Century, Farmhouse Styles
- Rustic Lodge Décor with Heritage Antique Doors and Furniture with a Soul
- The Golden Age of Piracy
- Handcrafted Antique Wood Doors for Cottages: Vintage Charm and Elegance