HARD-ALLOY ROCK-BREAKING CUTTING BIT OF CONE DRILL BIT

mining industry. SUBSTANCE: invention is used for drilling of boreholes with face flushing with mud solution or water or with blowing of face through with air or gas. Hard-alloy rock-breaking cutting bit is composed of cylindrical tail part and working head coming in the form of mating of convex cur...

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Bibliographische Detailangaben
Hauptverfasser:	BOGOMOLOV R.M, MOKROUSOV V.P
Format:	Patent
Sprache:	eng
Schlagworte:	EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING FIXED CONSTRUCTIONS MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS
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Beschreibung
Zusammenfassung:	mining industry. SUBSTANCE: invention is used for drilling of boreholes with face flushing with mud solution or water or with blowing of face through with air or gas. Hard-alloy rock-breaking cutting bit is composed of cylindrical tail part and working head coming in the form of mating of convex curvilinear surface and cone. Conicity angle lies within interval 25≅ alpha