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Keywords: button bit
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Proceedings Papers
Paper presented at the 6th ISRM Congress, August 30–September 3, 1987
Paper Number: ISRM-6CONGRESS-1987-109
... diameter The diameter of the hole is one of the most important factors affecting the penetration rate, be-. cause the percussion energy is distributed over a -- larger area as the diameter increases. Type of bit The type of bit has also a certain influence on penetration rate. A button bit, for example...
