Burrs are sharp edges on workpieces that occur during many mechanical machining processes. They pose a risk of injury to people handling the product.
They can also damage other components and thus impair the function of the product. For example, burrs generate increased friction, which causes seals to wear more quickly.
The removal of burrs (deburring) is therefore part of standard post-processing after many manufacturing processes. Burrs are created during shaping processes such as:
Burrs can be removed by many mechanical processes. These include grinding, milling and vibratory grinding, for example. A defined chamfer or radius is often aimed for.
#1 Definition Burr
A burr is a machining-related material residue that represents a deviation from the ideal workpiece surface.
#2 Burrs in sealing technology
In sealing technology, burrs should be avoided as they can impair the sealing function. Sealing surfaces with burrs can damage the softer sealing elements. Burrs on the seals themselves increase friction.
Burrs can be removed from O-rings by:
1. Trowalizing (deburring with stones)
2. Nitrogen deburring (deburring by cold and grains)
3. Buffering (deburring by grinding)