In one form or another, welding has been around for hundreds of years.
According to the book Friction Stir Welding: From Basics to Applications, “Although joining pieces together can be traced back more than 2,000 years, welding emerged as a viable manufacturing process only in the late 1800s.” It was not until the 1990s, however, that the method we know as friction stir welding emerged.
In that sense, it’s a “newer” technology.
When we talk about friction stir welding, we are referring to a
method of welding that involves the heating of metal so it can be effectively
welded. This process also involves a rotating tool that will push the heated
material together. One of the great advantages of using friction stir welding
is that the metal you use will never melt. This will produce great results
because it gives you the ability to attach different metals at different angles
at a higher efficiency rate.
Friction stir welding (FSW) is a relatively new welding process that was invented at The Welding Institute in Cambridge, UK in 1991. FSW is a solid-state joining process that uses frictional heat combined with accurately directed forging pressure to produce high integrity welded joints for extruded or wrought aluminum. The process can also be used to join copper, titanium, and certain alloys. This automated frictional welding process is more robust than other joining processes and is a good fit for industries that must employ high-volume production, such as the automotive industry.
The solid-state welding process in which the materials that are used for welding never go over the require melting points is known as friction-stir welding. This process requires heat to be generated during each point of contact that is used to join the materials together. During the friction-stir welding process, a spinning tool is imposed on a piece of work. The spinning tool is put through a downward force and turning over to the weld direction.
For many years, American Hydroformers has been one of the leaders in hydroforming technology and friction stir welding technology. Friction stir welding is a type of technique that offers a variety of benefits and advantages over one of the more traditional methods known as fusion welding. Friction stir welding has the ability to create a bond of any size, and this is one of the reasons why it has the ability to serve a wide range of industries.
The welding technique, friction stir welding, was developed almost 30 years ago in 1991. Although it was invented many years ago, it has seen a high rise in demand over the past few years. One of the main reasons that friction stir welding has seen such a massive increase is due to the rising demand for greater strength and durability in applications.
Lauded as the most significant innovation in metal joining in the last decade, Friction Stir Welding (FSW) introduces a solid-state joining process that is environmentally friendly, versatile, and energy efficient. FSW outperforms conventional fusion welding by joining aerospace aluminum alloys, and other metallic alloys, that are high-strength. The significance of this advancement is that aerospace aluminum alloys, like 2XXX and 7XXX series, have been classified as virtually non-weldable with conventional welding processes because of porosity and microstructure solidification behavior. Resistance welding can be performed on aluminum alloys, however, surface preparation has to be performed, which is expensive and surface oxide becomes a problem.
Friction stir welding is an innovative and unique method of joining metals by using frictional heat combined with a controlled forging pressure, producing full penetrated welded joints with high integrity that are defect free. Friction stir welding is most efficient on cylindrical components, flat plates as well as on parts of uneven thickness.
Friction Stir Welding: Applications That Are Far Out and Close to Home. Liquid hydrogen, it’s a substance that has fascinated mankind since the 1800s. That’s when James Dewar unleashed it as well as his thoughts on vacuum flasks and regenerative cooling on to the world. At the time, many Americans were unsure about what liquid hydrogen could do but that would all change thanks primarily to NASA and its Centaur rockets. Although revolutionary, the upper stage rockets did pose a problem that until recently has continually vexed the government agency. It was one of tank integrity.