GB1054979A - - Google Patents

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Publication number
GB1054979A
GB1054979A GB1054979DA GB1054979A GB 1054979 A GB1054979 A GB 1054979A GB 1054979D A GB1054979D A GB 1054979DA GB 1054979 A GB1054979 A GB 1054979A
Authority
GB
United Kingdom
Prior art keywords
inch
metal
piping
treated
oil
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired
Application number
Publication date
Publication of GB1054979A publication Critical patent/GB1054979A/en
Expired legal-status Critical Current

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Classifications

    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D7/00Modifying the physical properties of iron or steel by deformation
    • C21D7/02Modifying the physical properties of iron or steel by deformation by cold working
    • C21D7/04Modifying the physical properties of iron or steel by deformation by cold working of the surface

Abstract

1,054,979. Making drill piping; improving physical properties. CONTINENTAL OIL CO. Sept. 21, 1964 [Nov. 4, 1963; Aug. 3, 1964], No. 38371/64. Headings B3A and B3V. [Also in Division E1] A method of increasing resistance to stresscorrosion of a metal comprises removing mechanically from the metal oxide-defective and decarburized surface layers and then inducing compressive stresses in the metal by surface working. Oil-well steel piping, casing, sucker rods and drill piping may be treated and articles of nickel, copper, aluminium, cobalt, titanium, zirconium, vanadium, iron, rhodium and platinum or alloys of these metals. Surface layers of 0À002-0À01 inch may be removed by milling or grinding, after which the metal is compressed to a depth of 0À001-0À02 inch or a greater depth by shotpeening, rolling, drawing or swaging. The surface may be treated at - 30‹ F. to 950‹ F., and inner and outer surfaces of tubular stock may be worked. Results obtained from fatiguetest specimens are included which were prepared by turning, removing the tool marks with sandpaper, furnace heat-treating for one hour, removing the scale with grit paper, and cold rolling locally with ¢-inch or 1-inch balls.
GB1054979D Expired GB1054979A (en)

Publications (1)

Publication Number Publication Date
GB1054979A true GB1054979A (en) 1900-01-01

Family

ID=1758443

Family Applications (1)

Application Number Title Priority Date Filing Date
GB1054979D Expired GB1054979A (en)

Country Status (1)

Country Link
GB (1) GB1054979A (en)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
FR2495638A1 (en) * 1980-12-08 1982-06-11 Exxon Production Research Co PROCESS FOR PRODUCING A METAL TUBE IN A WAY REDUCING CRACKING BY HYDROGEN FRAGILIZATION
DE3325168A1 (en) * 1982-07-19 1984-01-19 Institut Français du Pétrole, 92502 Rueil-Malmaison, Hauts-de-Seine METHOD FOR INCREASING RESISTANCE TO STRESS CORROSION IN LONG-TERM ELEMENTS, AND LONG-SIZED ELEMENT MANUFACTURED IN THIS WAY
FR2543976A1 (en) * 1983-04-05 1984-10-12 Inst Francais Du Petrole NOVEL METHOD OF INCREASING THE CRACKING CORROSION RESISTANCE OF ELONGATE ELEMENTS, SUCH AS FLEXIBLE PIPE OR CABLE FRAME, AND PRODUCTS SO OBTAINED
EP0035091B1 (en) * 1980-01-25 1985-04-10 SCHOELLER-BLECKMANN Gesellschaft m.b.H. Process for producing tension-crack corrosion-resistant non magnetizable drill collars of austenitic steels, and apparatus for carrying out this process
WO2002070166A1 (en) * 2001-03-03 2002-09-12 Stahlwerk Ergste Westig Gmbh Stainless steel wire and method for producing a wire with improved resistance to corrosion

Cited By (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0035091B1 (en) * 1980-01-25 1985-04-10 SCHOELLER-BLECKMANN Gesellschaft m.b.H. Process for producing tension-crack corrosion-resistant non magnetizable drill collars of austenitic steels, and apparatus for carrying out this process
FR2495638A1 (en) * 1980-12-08 1982-06-11 Exxon Production Research Co PROCESS FOR PRODUCING A METAL TUBE IN A WAY REDUCING CRACKING BY HYDROGEN FRAGILIZATION
DE3325168A1 (en) * 1982-07-19 1984-01-19 Institut Français du Pétrole, 92502 Rueil-Malmaison, Hauts-de-Seine METHOD FOR INCREASING RESISTANCE TO STRESS CORROSION IN LONG-TERM ELEMENTS, AND LONG-SIZED ELEMENT MANUFACTURED IN THIS WAY
FR2530264A1 (en) * 1982-07-19 1984-01-20 Inst Francais Du Petrole METHOD FOR INCREASING CRACKING CORROSION RESISTANCE OF ELONGATE ELEMENTS SUCH AS FLEXIBLE PIPES OR CABLES, AND PRODUCTS THEREFROM OBTAINED
FR2543976A1 (en) * 1983-04-05 1984-10-12 Inst Francais Du Petrole NOVEL METHOD OF INCREASING THE CRACKING CORROSION RESISTANCE OF ELONGATE ELEMENTS, SUCH AS FLEXIBLE PIPE OR CABLE FRAME, AND PRODUCTS SO OBTAINED
WO2002070166A1 (en) * 2001-03-03 2002-09-12 Stahlwerk Ergste Westig Gmbh Stainless steel wire and method for producing a wire with improved resistance to corrosion

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