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Churn-drill performance

Bit wear-flat temperature as a function of depth of cut and speed

Published Year

• 1940-1949 (1)
• 1980-1989 (1)

Subject

• Rock-drills--Testing (2) *
• Boring (1)
• Quarries and quarrying--Equipment and supplies--Testing (1)
• Sandstone (1)

Author

• Hanson, Bruce D. (1)
• Lintner, E. J. (1)
• Thoenen, J. R. (1)
• Wingquist, Carl F. (1)

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