Frequently Asked Questions (FAQ)
Q
What is the basic working principle of roller burnishing?
Burnishing is a chipless cold-working machining method that compresses or "irons out" the peaks of a metal surface into the valleys instead of cutting the material. This processes a dense, uniform, and highly accurate surface finish without abrading the metal.
Q
What is the processing range and limitations for these tools?
The recommended minimum outer cylinder diameter is 5mm and above, and the minimum inner hole diameter is 150mm and above. They can process various geometries including end faces, flat surfaces, curved surfaces, and taper surfaces.
Q
What hardness requirements apply to Carbide-roll vs. Diamond Head tools?
Carbide-roll burnishing tools perform best on workpieces with a hardness of HRC < 40. In contrast, Diamond Head tools support a wider and higher hardness processing range of 18 < HRC < 68.
Q
What surface roughness values can be achieved with burnishing?
Both tools can produce excellent surface quality ranging from Ra 0.05 to 0.4 μm. The final surface finish depends on variables like material type, lathe characteristics, rolling speed, and pre-processing preparation.
Q
What cooling methods are recommended during the burnishing operation?
It is highly recommended to use an emulsion for cooling during the processing. For small-scale workpieces, lubricating oil can also be effectively used as a cooling medium.
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