Screw thread protection

A method of protecting mating screw threads at least under tightening torques is described in which a dry lubricant such as molybdenum disulphide is applied to one screw thread, and a liquid lubricant is applied to the other screw thread. The screw threads are then tightened to the required torque v...

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Bibliographische Detailangaben
Hauptverfasser:	STANDEN ROBERT, SHULVER RODERICK LEONAR, MISSELBROOK JOHN
Format:	Patent
Sprache:	eng ; spa
Schlagworte:	BLASTING DEVICES FOR FASTENING OR SECURING CONSTRUCTIONAL ELEMENTS ORMACHINE PARTS TOGETHER, e.g. NAILS, BOLTS, CIRCLIPS, CLAMPS,CLIPS, WEDGES, JOINTS OR JOINTING EARTH DRILLING EARTH DRILLING, e.g. DEEP DRILLING ENGINEERING ELEMENTS AND UNITS FIXED CONSTRUCTIONS GENERAL MEASURES FOR PRODUCING AND MAINTAINING EFFECTIVEFUNCTIONING OF MACHINES OR INSTALLATIONS HEATING JOINTS OR FITTINGS FOR PIPES LIGHTING LUBRICATING MEANS FOR THERMAL INSULATION IN GENERAL MECHANICAL ENGINEERING MINING OBTAINING OIL, GAS, WATER, SOLUBLE OR MELTABLE MATERIALS OR ASLURRY OF MINERALS FROM WELLS PIPES SUPPORTS FOR PIPES, CABLES OR PROTECTIVE TUBING THERMAL INSULATION IN GENERAL WEAPONS
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Beschreibung
Zusammenfassung:	A method of protecting mating screw threads at least under tightening torques is described in which a dry lubricant such as molybdenum disulphide is applied to one screw thread, and a liquid lubricant is applied to the other screw thread. The screw threads are then tightened to the required torque value. When completely mated the leakage path will not be masked as a result of volatilization of any of the components of either lubricant. UN METODO PARA PROTEGER ROSCAS DE TORNILLO CONJUGADAS CONTRA DAÑOS RECIPROCOS, AL MENOS BAJO PARES DE TORSION DE APRIETO, EN EL CUAL SE APLICA UN LUBRICANTE SECO, TAL COMO DISULFURO DE MOLIBDENO, A UNA DE LAS ROSCAS, Y SE APLICA UN LUBRICANTE LIQUIDO A LA OTRA ROSCA. DESPUES LAS ROSCAS SON APRETADAS HASTA EL VALOR DEL PAR DE TORSION REQUERIDO. CUANDO ESTAN COMPLETAMENTE EMPAREJADAS, EL PASO DE FUGA NO QUEDARA ENMASCARADO COMO CONSECUENCIA DE LA VOLATILIZACION DE CUALQUIERA DE LOS COMPONENTES DE CADA LUBRICANTE. EL INVENTO ES APLICABLE A ACOPLAMIENTOS DE OLEODUCTOS, GASODUCTOS Y OTRAS TUBERIAS.