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Tool wear in the drilling of sandstone: transitional effects

Perrott, C.M.

Experiments on the operation of masonry drills demonstrate the existence of two stages of efficient penetration in dry drilling, followed by a final stage of ineffective sliding of the tool against the rock face. The transitions are associated with changes in the morphology of the tool wear surfaces and in the nature of contact between tool and rock. Substantial improvements in drilling efficiency are demonstrated with the use of drilling liquids which have direct influence on the behaviour of entrapped drilling debris. The results are discussed in terms of a systems analysis and the associated tribo-process diagrams. (Kursetz)

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Tool wear in the drilling of sandstone: transitional effects

Perrott, C.M.

Experiments on the operation of masonry drills demonstrate the existence of two stages of efficient penetration in dry drilling, followed by a final stage of ineffective sliding of the tool against the rock face. The transitions are associated with changes in the morphology of the tool wear surfaces and in the nature of contact between tool and rock. Substantial improvements in drilling efficiency are demonstrated with the use of drilling liquids which have direct influence on the behaviour of entrapped drilling debris. The results are discussed in terms of a systems analysis and the associated tribo-process diagrams. (Kursetz)

Tool wear in the drilling of sandstone: transitional effects

Perrott, C.M.

Experiments on the operation of masonry drills demonstrate the existence of two stages of efficient penetration in dry drilling, followed by a final stage of ineffective sliding of the tool against the rock face. The transitions are associated with changes in the morphology of the tool wear surfaces and in the nature of contact between tool and rock. Substantial improvements in drilling efficiency are demonstrated with the use of drilling liquids which have direct influence on the behaviour of entrapped drilling debris. The results are discussed in terms of a systems analysis and the associated tribo-process diagrams. (Kursetz)

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Title:

Tool wear in the drilling of sandstone: transitional effects

Additional title:

Werkzeugverschleiss beim Bohren von Sandstein: Auswirkungen des Uebergangsbereiches

Contributors:

Perrott, C.M. (author)

Published in:

Wear of materials 1979. ASME int. conf. ; 477-484

Publication date:

1979

Size:

8 Seiten, 7 Bilder, 26 Quellen

Type of media:

Conference paper

Type of material:

Print

Language:

English

Keywords:

MAUERWERK , MAUERZIEGEL , SANDSTEIN , FELSMECHANIK , BOHRUNG (BERGBAU) , WERKZEUG , BOHRLOCH , VERSCHLEISS , REIBUNG , HARTMETALL , TRIBOLOGIE , OBERFLAECHENSTRUKTUR , PHASENUEBERGANG , UEBERGANGSWIDERSTAND

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