Friction welding is a forging technique that produces ultra-strong bonds for diverse applications. This process has been the answer to many manufacturing and engineering challenges for over five decades. From aerospace to automotive, friction welding is continually opening the possibilities for ongoing technological advancement.
What are the Different Types of Friction Welding?
There are a variety of friction welding techniques to choose from, and each offers its own unique advantages. Which one will accommodate your manufacturing demands? Read on to find out.
- Rotary Friction Welding — most popular type of friction welding and used for parts where at least one piece is rotationally-symmetrical, such as a tube or bar.
- Linear Friction Welding — used for jet engine components, near-net shapes, and more, where the limitation on the parts is only based upon the mass of the moving part, not the geometry of the interface.
- Friction Stir Welding — often used for aluminum plates, extrusions, and sheets, where seam or butt welds are made between thin components.
How It Works
Rotary Friction Welding
Rotary Friction Welding is a solid-state process in which one part is rotated at a high speed, and then pressed against another part that is held stationary. The resulting friction heats the parts, causing them to forge together.
Linear Friction Welding
Linear friction welding is a solid-state process in which one part moves in a linear motion at a high speed. This is pressed against another part that is kept stationary. The resulting friction heats the parts, causing them to forge together into a linear weld.
Friction Stir Welding
Friction Stir Welding is a solid-state joining process in which a pin tool rotates against the seam between the two stationary parts. This allows the FSW machine to create extremely high-quality, high-strength joints with low distortion.
Advantages
All types of friction welding have the advantage of joining dissimilar metals with minimal distortion. They have fast weld cycles, enabling more parts to be joined in less time with virtually defect-free bonding. Not only do they require minimal joint preparation, but these friction welding types are also eco-friendly, emitting no gases or fumes during the process.
Aside from these shared advantages, rotary, linear, and friction stir welding offer distinct benefits stemming from their different methods.
Rotary Friction Welding
- 100% bond at the contact area
- Less inventory required to create part families
- Scalable to any size weld
Linear Friction Welding
- A rapid, repeatable, and flexible process
- Ability to join nearly any number of shapes with complex part geometries
- Scalable to any size weld
Friction Stir Welding
- Affords new joining applications for difficult manufacturing challenges – from extrusions to sheets and more
- Accommodate parts up to 55 feet long
- Ability to use the dual head feature for fast panel welding
Top Industries for Friction Welding Technologies
Rotary, linear, and friction stir welding are used across a diverse range of industries to produce high-strength, high-quality welds. Each process offers distinct advantages, making them well-suited for applications that demand structural integrity, lightweight components, and superior joint strength.
Rotary Friction Welding
Because of its 100% bond at the contact area and fast weld cycles, rotary friction welding is used in industries with the highest quality and safety standards. They are typically used for tube, bar, and rod components.
- Aerospace
- Agricultural
- Automotive
- Construction
- Consumer products
- Oil and Gas
- Military
Linear Friction Welding
Linear friction welding has the same industrial applications as rotary friction welding. While there are limitations of rotary friction welding, such as its inability to weld parts with non-circular cross-sections, linear welding steps in with its ability to weld complex interface geometries.
- Aerospace
- Automotive
- Military
- Oil and Gas
Friction Stir Welding
The friction stir welding process is essential for joining challenging components, as it produces seamless bonds without compromising part length, ensuring precise measurements. Additionally, stir friction welding is used for lightweighting in e-mobility applications to reduce the part’s weight, improving fuel and energy efficiency.
- Aerospace
- Automotive
- Electric Vehicles
- Electronics
- Marine
- Military
- Rail
Make It Better
MTI solves difficult challenges every day. For customized parts or the machines that make them, you can count on us. Whether you’re designing aircraft, tractors, or anything in between, we can build a machine to make your part, make your part for you, or help you make your part even better.See our Contract Manufacturing, from Rotary Friction Contract Welding to FSW Contract Welding services, to learn more.