Abstract:
A downhole tool conveyable within a wellbore extending into a subterranean formation, wherein the downhole tool comprises a first component, a second component, and a solder electrically and mechanically coupling the first and second components, wherein the solder comprises or consists of: from 9.6 to 10.2 weight % of antimony; from 0.01 to 0.25 weight % of manganese; and tin.
Abstract:
A method for forming the cutting edge (20, 22) and adjacent contoured surface (S) area of rotary cutting tools (10) utilizing a laser (50) to remove material from the cutting end (18) of the tool (10) to create a predetermined point-by-point geometry is disclosed. Relatively complex surface and edge geometries may be formed by directing a laser beam (L) toward the cutting end (18) of the tool (10) at an angle (?) having a component (CN) that is normal to the surface (S) of the cutting end (18). The laser beam (L) is directed in multiple passes across the surface (S) of the cutting end (18) to remove material and form the desired cutting edge (20, 22) and adjacent three-dimensional contoured surface geometry (S).
Abstract:
A method for forming the cutting edge (20, 22) and adjacent contoured surface (S) area of rotary cutting tools (10) utilizing a laser (50) to remove material from the cutting end (18) of the tool (10) to create a predetermined point-by-point geometry is disclosed. Relatively complex surface and edge geometries may be formed by directing a laser beam (L) toward the cutting end (18) of the tool (10) at an angle (?) having a component (CN) that is normal to the surface (S) of the cutting end (18). The laser beam (L) is directed in multiple passes across the surface (S) of the cutting end (18) to remove material and form the desired cutting edge (20, 22) and adjacent three-dimensional contoured surface geometry (S).
Abstract:
An iron based hardfacing alloy with an undiluted (all weld material) alloy composition is substantially balanced in order to achieve an hypo-eutectic primary austenitic with secondary martensitic solidification mode. The alloy enables the deposition of substantially crack-free single layers of hardfacing onto industrial components without any post weld treatment. The hardfacing alloy is capable of withstanding abrasion of silicious earth particles when applied to industrial products, such as tool joints, stabilizers and casing and other tubulars used in oil and gas well drilling, and other industrial products.
Abstract:
Apparatuses for forming chamfers (125) on superabrasive tables (105) of cutting elements (100) for earth-boring tools include a chuck (205) for temporarily holding and positioning a cutting element, and at least one emitter (210) for emitting a beam of energy toward an edge of a superabrasive table of a cutting element held and positioned by the device. Methods of forming cutting elements for earth-boring tools and methods for forming earth-boring tools are also disclosed.
Abstract:
In one embodiment, a carbide-containing article includes a carbide body (54) with an attached superabrasive layer (52). A braze metal coating (56) is attached to a surface the carbide substrate (54). The coating (56) primarily is made of particles of a metal having a melting point of less than 1200 0C, the particles having a size of less than 0.1 mm. In another embodiment, a process for applying a braze metal coating (56) to a carbide body (54) of a superabrasive (52) or other article includes depositing finely divided particles of a low melting point metal onto the carbide body by spraying the particles and gas onto the body at a velocity that is between 500 km/sec and 2 km/sec, with volumetric delivery of the particles being less than 50 grams per minute.
Abstract:
Изобретение относится к сварке и наплавке и может найти применение при восстановлении изношенных частей деталей типа тел вращения, в частности бурильных труб. Способ восстановления бурильной трубы (1), включает формирование на поверхности изношенной ниппельной (3) и муфтовой (4) части трубы (1) автоматической электродуговой наплавкой под флюсом (6) валика при вращении трубы (1) и перемещении электродов (5) в прямом и обратном направлении вдоль ее образующей, при этом перед наплавкой устанавливают электроды (5) со смещением в горизонтальной плоскости против направления вращения трубы (1) с линейным отклонением от «зeнитa» на 20-30 мм и угловым отклонением от «зeнитa» 18-26°, наплавку осуществляют на прямой полярности с, подключением «минy.ca» на электроды (5) и «плюca» на трубу (1), группу электродов (5) для наплавки ниппельной (3) части трубы (1) запитывают от одного источника электрического тока, группу электродов (5) для наплавки муфтовой (4) части трубы (1) запитывают от второго источника электрического тока, расстояние между электродами (5) каждой группы выбирают из условия формирования общей ванны жидкого металла по всей ширине наплавляемого валика, перемещение электродов (5) совмещают с подачей флюса (6), в процессе наплавки трубу (1) охлаждают изнутри и с торцов, а после наплавки места наплавки термостатируют. Наплавленные поверхности обрабатывают ультразвуковым воздействием.
Abstract:
Disclosed is a hardfacing alloy capable of withstanding service abrasion of the order of silicious earth particles and weldable on industrial products, such as tool joints and stabilizers used in oil and gas well drilling, and other industrial products. The hardfacing alloy has a low coefficient of friction resulting from excellent metal to metal resistance and significant reduction in industrial wear on industrial products, such as casing wear. Other embodiments of the invention include tool joints having the hardbanding alloy welded to the outer cylindrical surface to its box and pin members and to stabilizer ribs on the stabilizer used in earth boring, such as boring for oil and gas, other industrial products, and methods of applying the hardfacing alloy to their surfaces. The hardfacing alloy does not require any post weld treatment, has primary bondes in its microstructure, the carbons in the alloy are tied up in the formation of secondary carbides which add to the abrasion resistance, and have a quadratic crystallographic structure and a hardness of about 1725 Hv comparable to the prior art hardness of the chromium carbide primary carbide alloys of the prior art but is substantially less brittle than C-Cr-Fe hardfacing alloys.