What is swaging?
Typical swaging applications:
Advantages of rotary swaging
The majority of components are formed in a cold state and as a consequence, the following are typical advantages of cold forming:
- Reduced cycle and processing times
The production cycle and processing times are considerably shorter when using swaging rather than using a process such as machine cutting
- Good surface finishes
Swaging will produce a smoother finish for your finished product, which will not be prone to the roughness which other processes can cause
- Tight tolerances
Swaging allows for greater precision and tighter tolerances without affecting the quality and performance of the produced parts
- A wide range of shapes
Rotary swaging provides the ability to produce a wide range of shapes and a wider range of possibilities than other cold forming processes
- No material loss
As swaging forms the material into the desired shape rather than being machined, it can be described as a near net shape process. This means the material is put to better use and there is no material loss, whilst the need for surface finishing is reduced which reduces time and production costs
- Gains in wall thickness
- Better grain structures
The swaging process improves the grain structure of the metal, which gives the part greater strength and its smooth finish
- Better product quality
In addition to improving the strength and finish of the part, the swaging process will also improve the material’s physical properties including its compression, tension, bending and torsion
What are the main principles of swaging?
Swaging units consist of a) a ‘spindle’, with guiding slots which contain the ‘dies’, ‘hammer blocks’ and pressure plates. b) a cage containing ‘rollers’. C) the machine retaining ‘track’. The spindle (1) rotates normally 300-500 rpm., this rotation forces outwards the dies (2), hammer blocks (3). As the roller (4) in the hammer block (3) strikes the ‘Outer roller’ (5) in the cage (6) the dies are ‘hammered’ together thus providing the forming blow. The opening and closing of the dies allow the component to be fed into the swaging machine with little effort from the operator or automatic feeder.
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