METHODS OF MANUFACTURING STEEL TUBES FOR DRILLING RODS WITH IMPROVED MECHANICAL PROPERTIES, AND RODS MADE BY THE SAME

METHODS OF MANUFACTURING STEEL TUBES FOR DRILLING RODS WITH IMPROVED MECHANICAL PROPERTIES, AND RODS MADE BY THE SAME

Embodiments of the present disclosure are directed to methods of manufacturing steel tubes that can be used for mining exploration, and rods made by the same. Embodiments of the methods include a quenching of steel tubes from an austenitic temperature prior to a cold drawing, thereby increasing mech...

Ausführliche Beschreibung

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Bibliographische Detailangaben
Hauptverfasser: ALTSCHULER, EDUARDO, EGGER, PABLO
Format: Patent
Sprache:eng ; fre
Schlagworte:
AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKINGWITHOUT ESSENTIALLY REMOVING MATERIAL
MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES,OTHERWISE THAN BY ROLLING
MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVINGMATERIAL
PERFORMING OPERATIONS
PUNCHING METAL
TRANSPORTING
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Beschreibung
Zusammenfassung:Embodiments of the present disclosure are directed to methods of manufacturing steel tubes that can be used for mining exploration, and rods made by the same. Embodiments of the methods include a quenching of steel tubes from an austenitic temperature prior to a cold drawing, thereby increasing mechanical properties within the steel tube, such as yield strength, impact toughness, hardness, and abrasion resistance. Embodiments of the methods reduce the manufacturing step of quenching and tempering ends of a steel tube to compensate for wall thinning during threading operations. Embodiments of the methods also tighten dimensional tolerances and reduce residual stresses within steel tubes.