METHOD FOR PROTECTING ROLLER-CUTTER BIT AGAINST WORKING-OUT IN DIAMETER

Method for protecting a roller-cutter bit against working out in diameter comprises melting-on large-grain alloy to the outer surface of the bottom of the back side of each bit dowel-tail in combination with inserted hard-alloy teeth. At the radius of the bottom of the outer surface of each dowel-ta...

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Bibliographische Detailangaben
Hauptverfasser:	SPIRIDONOV MYKOLA PETROVYCH, SOKOLOVSKYI VOLODYMYR PETROVYCH, DOVZHOK VALERII YEVHENOVYCH, LAVRESHYN IHOR MYKOLAIOVYCH, NIEZHENTSEV SERHII VOLODYMYROVYCH, GUK ROMAN YOSYPOVYCH, KRYZHANIVSKYI YEVSTAKHII IVANOVYCH, MARYK VASYL BOHDANOVYCH
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:	Method for protecting a roller-cutter bit against working out in diameter comprises melting-on large-grain alloy to the outer surface of the bottom of the back side of each bit dowel-tail in combination with inserted hard-alloy teeth. At the radius of the bottom of the outer surface of each dowel-tail of the bit, before application of melted-on solid alloy, one additionally drills circular openings.