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Title Application of steel 40Kh surface hardened by high-frequency currents in the production of gate valve parts
Creator/Author Veliev, T.K. ; Arifulin, R.K. ; Fataliev, N.S. ; Safarov, R.S.
Publication Date1986 Sep 01
OSTI IdentifierOSTI ID: 5124415
Other Number(s)CODEN: CPTEA
Resource TypeJournal Article
Resource RelationChem. Pet. Eng. (Engl. Transl.) ; Vol/Issue: 22:1-2
Subject020300 -- Petroleum-- Drilling & Production ;360103 -- Metals & Alloys-- Mechanical Properties; CHROMIUM-MOLYBDENUM STEELS-- MECHANICAL TESTS;OIL WELLS-- VALVES;STEEL-40KH-- MECHANICAL TESTS;STEEL-40KH-- SURFACE HARDENING;VALVES-- MECHANICAL TESTS; FIELD PRODUCTION EQUIPMENT;HARDNESS;HYDRAULICS;PRESSURE EFFECTS;SEALS;WELLHEADS
Related SubjectALLOYS;CHROMIUM ALLOYS;CHROMIUM STEELS;CONTROL EQUIPMENT;COPPER ADDITIONS;COPPER ALLOYS;EQUIPMENT;FLOW REGULATORS;FLUID MECHANICS;HARDENING;IRON ALLOYS;IRON BASE ALLOYS;MANGANESE ADDITIONS;MANGANESE ALLOYS;MATERIALS TESTING;MECHANICAL PROPERTIES;MECHANICS;NICKEL ADDITIONS;NICKEL ALLOYS;SILICON ADDITIONS;SILICON ALLOYS;STEELS;SURFACE TREATMENTS;TESTING;WELLS
Description/Abstract Bench tests were performed to determine the change in roughness, planeness, and hardness of the sealing surfaces of parts of gate valves made with steel 40Kh surface-hardened by high-frequency currents (HFC).^Most parts of the gate valves for oil wells are now made of steel 38Kh2MYuA containing molybdenum.^It was of interest to conduct tests to find another steel (40Kh) with less precious alloying elements and to increase the hardness of the sealing surfaces.^The tests showed that steel 40Kh with HFC surface hardening may be recommended for gate parts of straight-through gate valves with specific contact pressure of up to 70 MPa.^The torque for controlling the gate must be 0.8-1kN.^Tests were also conducted on an experimental batch of Christmas trees and tubing heads; those results are presented.
Country of PublicationUnited States
LanguageEnglish
FormatPages: 58-59
System Entry Date2001 May 13

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