Like conventional aluminum extrusions, microextrusions are pushed through a die. Unlike conventional extrusions, the entire extrusion process is performed at a submillimeter level. In other words, the resulting product’s cross section can fit through a 1-millimeter square. Since microforming was first explored in 1990, several microextrusion processes have been developed and found to be especially valuable in the defense and aerospace industries.
“Taber was originally recognized for our large shapes and now we are establishing ourselves as microextruders. Since we’ve added microextrusions, friction stir welding, and billet casting, we’re pretty much spanning the gamut of aluminum extrusion competence,” says Jason Weber, VP of Sales and Marketing at Taber Extrusions. “We were already well-versed within the defense and aerospace markets but adding miniature aluminum extrusions to our capabilities has allowed us to become a one-stop shop for our customers in those industries. Our diversification has opened the door wide for our customers.”
Taber Extrusions has experienced many evolutions since its founding in the early 1970s. Established in Russellville, AR, Taber pioneered a process for extruding rectangular billet, able to extrude solid profiles up to 31 inches wide or hollows up to 29 inches. Since then, the Gulfport, MS facility was added, which increased Taber’s billet capacity, alloy range, and ability to reuse materials. Within the last decade, fabrication capabilities were upgraded, friction stir welding was added, and of course, microextrusions became an offering.
MICROEXTRUSIONS FOR DEFENSE AND AEROSPACE
For which type of end-use applications are Taber’s microextrusions being utilized?
Precision is a must for military, defense, and firearms manufacturing – requiring strength, complexity, and tight tolerances. Aluminum’s high strength-to-weight ratio makes it the ideal material for many defense product applications such as:
Electronics thermal management/enclosures
Firearms components and accessories
From the Wright brothers to NASA, aluminum has helped make it possible for humans to fly above the Earth onward to explore other galaxies. Aluminum’s minimal maintenance, lightweight with high strength, flexibility at low temperatures, and ability to engineer a wide range of functionality into components, makes it an obvious choice for solutions in aircraft and aerospace. For the most part, microextrusions function out of site and you’ll never know they are all around you. However, they serve a crucial role in aerospace:
Interior aircraft systems
Supplemental oxygen systems
Passenger Comfort Systems
Passenger service systems
Other fluid/gas systems
As aluminum has played an important role in the defense and aerospace applications for many years, a new generation of aluminum-lithium alloys are offering aircraft manufacturers even more savings when it comes to weight and fuel. Beyond aluminum’s high strength-to-weight ratio and excellent formability, its anticorrosive properties make it a top choice. When aluminum is exposed to air, it forms a hard microscopic oxide coating, sealing it from the environment. This tight oxide bond is a compound not found in nature, but an aluminum alloy created to provide a long-lasting protective solution. These unique properties allow microextrusion manufacturers like Taber Extrusions to furnish extremely strong, precise, and long-lasting miniature extrusions to end users in a wide range of markets.
Taber’s Miniature Extrusion Capabilities
Up to 0.8 In2 cross sectional area
Special cases down to 0.075 In2
Profile circle size up to 3″
Minimum wall thickness possible to 0.010” (select cases)
Key characteristic tolerances possible ±0.001” (select cases)
More About Taber Extrusions:
Founded in 1973, Taber Extrusions originally pioneered a process for extruding rectangular billet which enables the company to extrude solid profiles up to 31 inches wide or hollows up to 29 inches. Taber expanded with the purchase of an extrusion facility in Gulfport, MS, in 1995 which houses a new state-of-the-art cast house and two additional presses, microextrusion capabilities, and the fabrication area has been expanded multiple times.
Taber continues to extrude billet in a wide range of alloys and sizes and has diversified its markets beyond military since its inception to include aerospace, automotive, marine, infrastructure, and sporting goods, among many others. For these markets, the company supplies cast and extruded products in a variety of soft and hard alloys.
Today, Taber Extrusions has completed the addition of in-house friction stir welding capabilities, and carries on their offering of extruded aluminum components, value-added machining services, and raw material supply to the North American market – making them a vertically integrated supplier of FSW panels and assemblies never before seen in North America.
Amid the screech of saws cutting through metal, the beeping of forklifts, and the clank of metal components, workers in modern shipyards are producing some of the largest vessels in the world. A similar cacophony of sounds as those heard in a shipyard can be heard around the country in automotive, construction, aerospace, and transportation factories.
Yet, one traditional sound associated with industrial manufacturing may soon go silent: the loud cracking, buzzing, electric sound associated with MIG welding. Sometimes likened to the sound bacon makes while frying, the sounds of MIG welding may eventually come to be completely replaced by the low buzzing of the spinning rotating tool used in Friction Stir Welding (FSW).
As FSW becomes faster and more versatile, more industries than ever are moving toward this type of welding.
FSW shows its high cast as a modern-form joining operation.
Unlike other forms of welding, FSW can be automated which increases precision and reduces manufacturing times. Manufacturing time is further decreased because FSW only takes one pass to weld metals and because there is no filler material nor melting, eliminating the need for post weld work, such as splatter cleaning.
FSW is also hyper-modern by being more environmentally friendly and less wasteful (it does not have consumable parts) and not producing nauseous gases during the process.
Other benefits of Friction Stir Welding include:
Increased strength (High tensile, fatigue & bend properties)
Good for welding metals such as aluminum alloys that can be hard to weld
The top users: Marine and Transportation
Both of these gigantic industries – marine and transportation – incorporate FSW into their manufacturing operations. Public transportation alone has a market size of 75.6 billion dollars[i], and for shipbuilding, without considering the other sectors of the naval industry, the market size is 29 billion.
Other key sectors are also keen on taking advantage of FSW. Below we highlight just one benefit FSW gives each of the following sectors:
The Benefit: Weight Reduction
One of the simplest ways to increase efficiency in transport vehicles is by reducing weight. Marine, air, and land transport vehicles are foregoing rivets, clinch nuts, or traditional MIG or TIG welding in their manufacturing processes in favor of FSW which doesn’t add any weight to the structure.
“Weight is one of the biggest challenges to aircraft manufacturers. Using FSW to join aluminum alloy stringers to skins for aircraft wings and fuselage structures will reduce weight by the removal of thousands of rivets, and any overlapping aluminum material. A leading aircraft manufacturer estimated that potential weight savings of approximately 2.2 lbs. per meter of FSW could be made.[i]”
The benefit: Easy welding of hard-to-weld alloys.
Some types of difficult-to-weld aluminums can frustrate traditional welding attempts. In addition, joining dissimilar aluminum alloys has always been a challenge due to the different chemical and physical properties of the metal.
Recently, aerospace companies have begun using FSW, a solid-state welding technique, to surpass these limitations. Today, some fuel tanks for spacecraft – made out of hard to weld aluminum alloys – are premanufactured using FSW[i].
The benefit: Better production habits, taking advantage of prefabrication, modular building, and assembly lines.
As if a precursor of things to come, the first commercial use of FSW was on ships, specifically on hollow panels used for freezing fish on fishing boats.
Today, many ships use friction stir welded floors, decks, and bulkheads. By using FSW, shipyards reduce the amount of work needed to be done, shifting the work to assembly-line factories[i]. Many parts can be manufactured in production lines improving safety, accuracy, and efficiency. Not only that, the industry can take advantage of the best pre-fab and modular practices that will further decrease production times.
Today’s cruise ships are light weight structures which allow shipbuilders to build taller ships while keeping the center of gravity lower. Designed with all the heavy machinery at the bottom and lightweight aluminum materials at the top makes them inherently stable even as ship designs are getting taller and taller, demonstrating how sufficient safety can be achieved.
Ultimately this translates to one thing: bigger ships mean MORE FUN!
Whether it’s the freighters that carry the goods from our globalized economy, the military vessels that keep our oceans safe, or the cruise-lines that give families unforgettable vacations, all these sectors are seeing cost and efficiency saving with FSW.
The benefit: Safety
This industry in particular has honed in on the advantages FSW offers in crash safety. FSW is the best welding process for creating safe designs:
“Modern passenger rail cars are increasingly produced from longitudinal aluminium extrusions with integrated stiffeners.
This design approach can enhance the crashworthiness of vehicles […] Large aluminum extrusions with complicated shapes are [being used].[i]”
The benefit: Stability
Anyone traveling behind an 18-wheeler on highways knows just how the wind and road shakes the trailers. By using FSW on the floorboard of their trailers, some freight companies argue that their trailers have become more stable than ever. “The aluminum extrusions become one at the molecular level, making the floor a single-piece of rigid aluminum.[i]” The end result? Less wear on the tires and better fuel mileage.
Other industries taking advantage of friction stir welding include the automotive, construction, and defense industries, among others. It has even been incorporated to make stronger snowmobiles and lighter coolant systems.
The strong, lightweight welds that can be used on hard-to-weld alloys have every industry that uses aluminum and aluminum extrusions looking to gain a competitive advantage.
Companies that have specialized in aluminum and aluminum extrusions are the front line for delivering FSW benefits to customers. For more information, please visit Taber Extrusions. With a long tradition of proving aluminum and aluminum extrusion solutions, Taber Extrusions provides companies all the advantages of FSW in one location.
Industries Served by Taber Extrusions:
Government | Military Contracts | Department of Defense
Aircraft | Aerospace
Marine | Shipbuilding
Infrastructure | Platforms | Decking
Electrical | Power Transmission | Electronics
Industrial, Agricultural, and Mining Equipment
About Taber Extrusions:
Founded in 1973, Taber Extrusions originally pioneered a process for extruding rectangular billet which enables the company to extrude solid profiles up to 31 inches wide or hollows up to 29 inches. Taber expanded with the purchase of an extrusion facility in Gulfport, MS., in 1995 which houses a new state of the art cast house and two additional presses, micro-extrusion capabilities, and the fabrication area has been expanded multiple times.
Taber continues to extrude billet in a wide range of alloys and sizes, and has diversified its markets beyond military since its inception to include aerospace, automotive, marine, infrastructure, and sporting goods, among many others. For these markets, the company supplies cast and extruded products in a variety of soft and hard alloys.
Today, Taber Extrusions has completed the addition of in-house Friction Stir Welding capabilities, and carries on their offering of extruded aluminum components, value-added machining services and raw material supply to the North American market – making them a vertically integrated supplier of FSW panels and assemblies never before seen in North America.