发明名称 METHODS OF MANUFACTURING STEEL TUBES FOR DRILLING RODS WITH IMPROVED MECHANICAL PROPERTIES, AND RODS MADE BY THE SAME.
摘要 <p>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.</p>
申请公布号 MX2013004025(A) 申请公布日期 2013.11.06
申请号 MX20130004025 申请日期 2013.04.10
申请人 TENARIS CONNECTIONS LIMITED 发明人 EDUARDO ALTSCHULER;PABLO EGGER
分类号 C21D1/02;C21D1/18;C21D1/26 主分类号 C21D1/02
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