GB1054979A - - Google Patents
Info
- 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
Links
Classifications
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING 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
- C21D7/00—Modifying the physical properties of iron or steel by deformation
- C21D7/02—Modifying the physical properties of iron or steel by deformation by cold working
- C21D7/04—Modifying 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.
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)
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 |
-
0
- GB GB1054979D patent/GB1054979A/en not_active Expired
Cited By (6)
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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