Abstract: A method is described that includes the steps of making a thin walled Zr alloy tube, loading nuclear fuel pellets into the tube, compressing the tube onto the fuel pellets to substantially reduce free space around the fuel pellets, positioning end plugs at each of two ends of the tube, filling the tube with a heat transferring gas, and coating the compressed tube with a corrosion resistant material using a thermal deposition process, such as cold spray, before inserting the tube into a pre-formed SiC composite cover having at least one closed end.

Abstract: A process for manufacturing a high nitrogen stainless steel pipe material includes keeping an outside surface and/or an inside surface of an austenite stainless steel pipe material in contact with a substance that becomes a nitrogen (N) source, heating the steel pipe together with the nitrogen source substance at a temperature of 800° C. to 1100° C. in a range of temperatures not higher than the critical temperature for crystal grain enlargement of the steel pipe material to cause nitrogen to be absorbed into the surface of the pipe and diffused into the steel solid phase, and applying to the heat-treated pipe material annealing treatment in the range of temperatures in vacuum, inert gas including argon gas or an atmosphere of a gas with a reducing substance including H2 gas added thereto, to result in a decrease of nitrogen concentration gradient.

Abstract: A joining method of joining two pieces of subjects to be joined together, the subjects being a first member and a second member that has a joint insertion portion in which the first member is inserted, the method including: heating the second member that is set in an expansion restricting member and in which the first member is inserted to the joint insertion portion to first temperature to cause the second member to have thermal expansion and thereby causing the joint insertion portion to have plastic deformation in a direction in which a diameter shrinks with mechanically restricting thermal expansion of the second member by an inner surface of the expansion restricting member; and cooling the second member after the heating to join the first member and the second member together.

Abstract: A production method of a wheel rim includes: a step of forming a cylindrical rim material into a rim shape; and a step of increasing a sheet thickness of at least one opening end edge of the rim material at least one of before and after the step of forming of the cylindrical rim material. In addition, in the step of increasing of the sheet thickness, in a state in which the opening end edge is inserted into an annular groove of a die provided with the annular groove which is wider than the sheet thickness of the opening end edge, a thickened portion is formed by exerting a compressive load in an axial direction of the rim material on the opening end edge.

Abstract: The method includes a step of preparing a first member made of a first metal and a second member made of a second metal having a smaller deformation resistance than the first metal, and a step of joining the first member and the second member. The step of joining includes a step of heating the first member and the second member by relatively rotating the first member and the second member, while pressing the first member and the second member against each other, without changing a relative positional relationship therebetween, and a step of cooling the first member and the second member heated, while being pressed against each other. In a first contact surface which is a surface of the first member coming into contact with the second member, a recess is formed so as to include a region intersecting the axis of rotation.

Abstract: An antenna farm enclosure for a locomotive cab includes a planar lid hinged to a base and bearing an array of compact antennae. A separate frame holds the antenna farm above the roof to permit wind and moisture to pass beneath, and allows for adjustments for irregularities in the cab roof. A chimney surrounding a port through the cab roof extends upward into the antenna farm enclosure, forming a dam that prevents accumulated moisture from entering the cab or the enclosure. Cables from the antennae extend through the chimney into the cab. A wide flange surrounds the lid and bears against two concentric gaskets to seal the enclosure. Specialized hold-down devices arrayed around the flange compress both gaskets, and comprise threaded shafts hingedly coupled to the base. The slightly arched flange asserts spring-like tension against the hold-down devices, which compress the arched flange to strengthen the seal.

Abstract: A solder ball bonding tool includes a nozzle having an inner bore having a plurality of columnar surfaces and interposed retention structures that are positioned within the nozzle to retain a solder ball therein. A projection or projected shape formed by intersecting the retention structures may be generally circular, having a diameter less than the diameter of the solder balls for which the retention structures are positioned to retain. The nozzle may comprise a cemented carbide having less than or equal to a cumulative 4.5% of cobalt and gold serving as a binder.

Abstract: A method for manufacturing thermally stressed engine components having a geometrically complex structure includes metal injection molding metal powder mixed with a binder to form green compacts of individual parts, which are debindered to form brown compact sections which are joined together to form a multi-part brown compact which are sintered in the assembled state. The brown compact sections have differing shrinkage properties in the sintering process, depending on the metal powder used, with a greater shrinking first brown compact section being automatically pressed against a second brown compact section during sintering. Connecting elements having positively engaging projections and recesses are provided at joining surfaces of the brown compact sections and have differing shrinkage such that during sintering of the assembled brown compact, the brown compact section with projections undergoes a greater shrinkage than the brown compact section with recesses.

Abstract: A method is disclosed of producing a billet which can be heated and rolled or otherwise worked with conventional equipment to form a product with a steel core and a cladding of an alloy including stainless steel, nickel-chrome, nickel-copper or copper-nickel. For a product such as corrosion resistant reinforcing bar, the billet includes a solid steel core inserted in a tube of the alloy on which swaging operations are carried out, decreasing the transverse size of discrete portions of the tube. The part of the tube interfacing with the steel body may be swaged, increasing the length of the tube and decreasing the transverse size of the steel body at the interface. To prevent oxidation of chrome and other metals in the tube, one or more briquettes of scavenging metal are inserted in the parts of the tube that project clear of an end of the core.

Abstract: Provided is a cylindrical sputtering target which attains a high production yield in a film-forming process even when a film is formed by sputtering with a long cylindrical sputtering target constituted by a plurality of cylindrical target materials. A multi-divided cylindrical sputtering target formed by bonding a cylindrical base and a plurality of cylindrical target materials together with a bonding material has a divided portion where adjacent cylindrical target materials are arranged with a gap therebetween, while outer peripheral faces of the adjacent cylindrical target materials have a step of 0.5 mm or less therebetween in the divided portion. Such a target is obtained by fixing the cylindrical target materials with reference to the outer peripheral faces of the cylindrical target materials when arranging the cylindrical target materials with reference to the cylindrical base.

Abstract: A connection method of a terminal includes an inserting-arranging process for inserting and arranging conductors of a plurality of wires into a connection section. The wires have the conductor sections exposed from the sheaths thereof at the end portions. The connection section has cylindrical shape with a bottom portion and an opening section. The method further includes a heating-melting process for heating the connection section in a state that the opening section of the connection section faced upwards in the vertical direction to melt the conductors within the connection section, and a molten-metal raising process for conducting an insertion of the conductors into the connection section and/or a pressurization of the connection section from outside to raise the molten metal within the connection section to a level upper.

Abstract: A system and method for electromagnetic surface treatment of a work piece has an electromagnetic pulse generator and an electromagnetic pulse tool. The work piece has a working surface. A current pulse generated by the electromagnetic pulse generator travels through the tool producing an electromagnetic pulse. The electromagnetic pulse interacts with the working surface causing an indentation to form. A residual compressive stress layer is also formed. The indentation has a smooth and continuous topography that is described by an indentation perimeter, an indentation transition region, an indentation sidewall, an impact transition region, and an impact region. The method may also simultaneously, or subsequently, form a second indentation which overlaps with the indentation. An inter-indentation overlap region is formed when the indentations overlap. The inter-indentation overlap region is smooth and continuous. Multiple treated surfaces may easily be formed on the working surface of the work piece.

Abstract: The present invention is aimed at providing a method for producing a vacuum-insulated double container that exhibits a remarkable and heretofore unobtainable operating effect. The invention provides a method for producing a vacuum-insulated double container by placing a titanium internal cylinder (2) into a titanium external cylinder (1) via a space section (S), and using the space section (S) between the external cylinder (1) and the internal cylinder (2) as a vacuum-insulating space section, the method comprising the steps of degassing the space section (S) of a workpiece (3) that includes the external cylinder (1) and the internal cylinder (2), and vacuum sealing a degassing hole while the workpiece (3) is heated in a vacuum heating furnace (6); and then providing concavoconvex portions (4, 5) to a surface of the recrystallized external cylinder (1) and the internal cylinder (2) by placing the workpiece (3) in an atmospheric-pressure environment.

Abstract: The invention relates to a method of protecting equipment intended to operate at high temperature in the presence of a fluid containing at least one hydrocarbon and/or carbon monoxide against corrosion by metal dusting, method in which pieces of the equipment are made from an alloy containing nickel, iron, chromium and/or aluminum, and in which said pieces of the equipment are protected from said corrosion by a protective coating. This method is characterized in that said equipment pieces protected in this way are connected to each other by means of joining pieces, said joining pieces being protected beforehand by a protective coating over at least part of their surface intended to be brought into contact with said fluid at high temperature, and in that each of the connections intended to be subjected to said corrosion is produced by external welding of the ends of the joining piece with said pieces of equipment.

Abstract: A system and method for electromagnetic surface treatment of a work piece has an electromagnetic pulse generator and an electromagnetic pulse tool. The work piece has a working surface. A current pulse generated by the electromagnetic pulse generator travels through the tool producing an electromagnetic pulse. The electromagnetic pulse interacts with the working surface causing an indentation to form. A residual compressive stress layer is also formed. The indentation has a smooth and continuous topography that is described by an indentation perimeter, an indentation transition region, an indentation sidewall, an impact transition region, and an impact region. The method may also simultaneously, or subsequently, form a second indentation which overlaps with the indentation. An inter-indentation overlap region is formed when the indentations overlap. The inter-indentation overlap region is smooth and continuous. Multiple treated surfaces may easily be formed on the working surface of the work piece.

Abstract: A medical implant that delivers therapeutic via microtubes and a method of making the same is provided. In one embodiment a biologically implantable structure adapted to fit within the body of a patient is provided. This structure may have a plurality of individual microtubes in physical communication with its outer surface, the microtubes containing or carrying a therapeutic. In an alternative embodiment a method of manufacturing an implantable medical appliance is provided. This method includes placing a pliant stratum of microtubes onto a biologically implantable medical structure and then applying a therapeutic to the pliant stratum to cover or fill the microtubes.

Abstract: A compound arrangement comprising a first component of metal being brazed to a second component of metal. The first component has an external cylindrical surface touching an cylindrical internal surface of the second component. The second component clasps the first component tightly, so that the second component exerts compressive stress on said external surface of the first component.

Abstract: A method and apparatus for a constructing misting manifold is disclosed that uses a standardized intermediate member joined to tubing. The method allows mass production, particularly with use of orbital welding, easy alignment of the component part and high quality welds.

Abstract: A method and apparatus for assembling a driveshaft, and the driveshaft itself. The driveshaft (1) includes a first attachable part (2) with a first longitudinal axis (A1), a second attachable part (3) with a second longitudinal axis (A2) as well as a tube element (4) with a curvature which is production-caused. For joining purposes, the tube element (4) is held so as to intersect a reference axis (R) in two points of its center line (M). The first attachable part (2) with its first longitudinal axis (A1) and the second attachable part (3) with its second longitudinal axis (A2) are aligned on the reference axis (R). Thereafter, the attachable parts (2, 3) are welded to the tube ends of the tube element (4), with the radial gaps between the tube element (4) and the attachable parts (2, 3) being closed.

Abstract: An injection molding process for fabricating a Coriolis flowmeter. The process includes the steps forming a material flow path core using a core mold, placing the formed material flow path core into a wrapper mold having a cavity whose surfaces define the exterior surface of the plastic Coriolis flowmeter structure to be formed, injecting low temperature metal or soluble material into the cavity of the wrapper mold, removing the plastic Coriolis flowmeter structure from the wrapper mold, and removing the material flow path core from the plastic Coriolis flowmeter by melting the low temperature metal core or by dissolving the soluble material using hot water.

Abstract: A single-tube Coriolis mass flow sensor includes a stainless steel sleeve having an unplated interior surface and a titanium member having a cylindrical end inserted into the stainless steel sleeve. The exterior surface of the titanium cylindrical end forms a joint with the unplated interior surface of the stainless steel sleeve. The titanium cylindrical end is brazed to the unplated interior surface of the stainless steel sleeve at the joint, and the stainless steel sleeve exerts compressive stress on the titanium cylindrical end at the joint.

Abstract: A magnetic pulse welding operation is performed to secure first and second metallic components together, such as a yoke and a driveshaft tube in a vehicular driveshaft assembly. The yoke includes a first portion, such as a body portion, and a second portion, such as a pair of opposed yoke arms. The end of the driveshaft tube is disposed co-axially about the body portion of the yoke. An inductor axially is positioned co-axially about the overlapping portions of the end of the driveshaft tube and the body portion of the yoke. The inductor is energized to perform a magnetic pulse welding operation to secure the end of the driveshaft tube to the body portion of the yoke without generating a significant flow of air toward the inductor.

Abstract: A magnetic pulse welding operation is performed to secure first and second metallic components together, such as a yoke and a driveshaft tube in a vehicular driveshaft assembly. The yoke includes a first portion, such as a body portion, and a second portion, such as a pair of opposed yoke arms, that are separated by a bridge portion. The end of the driveshaft tube is disposed co-axially about the body portion of the yoke, and a magnetic pulse welding operation is performed to secure the end of the driveshaft tube to the body portion of the yoke. The bridge portion can be defined by a groove formed in either the outer surface or the inner surface of the yoke. The groove may have side portions that extend either generally perpendicular or are angled or tapered relative to an axis of rotation of the yoke. If desired, a pair of opposed, semi-circular grooves may be formed in the yoke to define the bridge portion.

Abstract: An outer pipe 10 and an inner pipe 12 are formed by drawing. Inner pipe 12 is inserted into outer pipe 10 and a metal core 14 is inserted into inner pipe 12. From this state, drawing is performed so that outer pipe 10 presses tightly against inner pipe 12. Metal core 14 is pulled out, resulting in a two-layer clad pipe 15. Alternatively, a two-layer clad pipe can also be made by drawing outer pipe 10 and inner pipe 12 without inserting metal core 14.

Abstract: For a pipe joining method using shape memory alloy capable of preventing a shape memory capacity loss due to a pipe's tolerance, a shape memory alloy joint having an inner diameter greater/less than an outer diameter of pipes to be joined is installed at the outer/inner circumference of a pipe joining portion, and the pipes and the shape memory alloy joint are simultaneously enlarged/reduced. In addition, a general metal joint having an inner diameter greater/less than an outer diameter of shape memory alloy pipes to be joined is installed at the outer/inner circumference of a shape memory alloy pipe joining portion, and the shape memory alloy pipes and the general metal joint are simultaneously enlarged/reduced.

Abstract: A method of hydroforming a tubular structure of varying diameter along its longitudinal axis, comprising the formation of a tubular blank member by welding together, at their periphery, tubes of different diameters using electromagnetic pulse welding.

Abstract: A method of welding a hollow member and an insert member to form a composite member including a hollow member and insertion member requiring a high dimensional accuracy in the end-to-end distance in the axial direction and requiring a reliable concentricity in the center axes of the hollow member and insertion member, including preparing a hollow member and insertion member, inserting the insertion member in the hollow member, providing spot welds at an overlap portion where the hollow member and insertion member overlap to correct the axial end-to-end distance of the hollow member and the insertion member, and providing a partial weld at an overlap portion where the hollow member and insertion member overlap to correct the concentricity of the hollow member and the insertion member.

Abstract: A system for manufacturing a straight tube Coriolis Flowmeter. The system of this invention provides a process for connecting a flow tube assembly including a balance bar and a flow tube to at least two points inside a casing. The process provides an inexpensive way to use localized heat to affix the flow tube assembly to the two points. The use of localized heat reduces damage caused by expansion of components caused by heat as well reduces damage to electrical components in the casing.

Abstract: The invention relates to a driveshaft and to a method of producing the driveshaft having three components a first attaching element 1 and a second attaching element 13 and a tube element 8 arranged therebetween. The tube element 8 is provided with a first end face 9 and a second end face 12. Both attaching elements 1, 13 comprise cylindrical receiving faces 4, 16 whose diameter is smaller than that of the tube bore 10 of the tube element 8. This permits a radial adjustment of the elements relative to one another with reference to a longitudinal reference axis 25 in order to keep any out-of-balance minimized. In the axial direction, close tolerances can be observed in that a first reference face 6 of the first attaching element 1 is set relative to the first end face 9 of the tube element at a fixed distance 7.

Abstract: A single-tube Coriolis mass flow sensor includes a stainless steel sleeve having an unplated interior surface and a titanium member having a cylindrical end inserted into the stainless steel sleeve. The exterior surface of the titanium cylindrical end forms a joint with the unplated interior surface of the stainless steel sleeve. The titanium cylindrical end is brazed to the unplated interior surface of the stainless steel sleeve at the joint, and the stainless steel sleeve exerts compressive stress on the titanium cylindrical end at the joint.

Abstract: Surprisingly, silver-copper-palladium brazing alloys, which have hitherto been used only for the brazing of components of the same material, are also very well suited for brazing directly titanium to stainless steel if, the latter component clasps the titanium component tightly, so that the cold joint is under constant compressive stress. In a method for forming the titanium-steel compound the titanium component is provided with a cylindrical end which has a smaller outside diameter than an adjacent main portion whose external surface is a first surface to be brazed. The cylindrical steel component is a sleeve whose inside diameter is equal to the outside diameter of the main portion and whose internal surface is a second surface to be brazed. A silver-copper-palladium brazing alloy is placed around the end of the titanium component. The steel sleeve is slipped thereover.

Abstract: An outer pipe 10 and an inner pipe 12 are formed by drawing. Inner pipe 12 is inserted into outer pipe 10 and a metal core 14 is inserted into inner pipe 12. From this state, drawing is performed so that outer pipe 10 presses tightly against inner pipe 12. Metal core 14 is pulled out, resulting in a two-layer clad pipe 15. Alternatively, a two-layer clad pipe can also be made by drawing outer pipe 10 and inner pipe 12 without inserting metal core 14.

Abstract: A method of hydroforming a tubular structure of varying diameter along its longitudinal axis, comprising the formation of a tubular blank member by welding together, at their periphery, tubes of different diameters using electromagnetic pulse welding.

Abstract: A tube for a cracker unit in which ethylene is produced withstands, without oxidizing or losing its strength, the elevated temperatures required to effect cracking, yet retards coking. The tube has a shell formed from stainless steel or high nickel alloy and a liner formed from an iron-aluminum alloy. The liner retards the deposit of carbon and its build up known as coking. To form the tube, a high alloy ingot is bored to provide a bore that extends through its center. Then a weld overlay is applied to surface of the bore, with the overlay being derived from a weld metal containing at least 16% aluminum and the balance essentially iron. Thereafter, the ingot is heated to its hot working temperature and extruded through sets of opposed rollers, with the direction of advance being in the direction of the bore. The extruding transforms the ingot into a lined tube.

Abstract: Concentric, tubular sections are assembled by first securing annular centralizers and insulation about the external surface of the smaller diameter tube while the tube is horizontally disposed. The larger tube is then vertically aligned and lowered into a recessed area formed below the assembly area work level. A lifting cable, secured at one end to a lifting device, is extended through the smaller diameter tube and attached to a hoisting arrangement that vertically orients the tube concentrically over the larger diameter tube. Spring-loaded legs on the lifting device are manually retracted radially to permit the smaller tube to be lowered concentrically through the larger tube. The inner tube is lowered until the legs spring radially outwardly to engage the base of the larger tube. The entire assembly may then be lifted as a unit by the hoist with the lifting device, establishing the axial positions of the two tubes relative to each other.

Abstract: A method of welding a hollow member and an insert member to form a composite member including a hollow member and insertion member requiring a high dimensional accuracy in the end-to-end distance in the axial direction and requiring a reliable concentricity in the center axes of the hollow member and insertion member, including preparing a hollow member and insertion member, inserting the insertion member in the hollow member, providing spot welds at an overlap portion where the hollow member and insertion member overlap to correct the axial end-to-end distance of the hollow member and the insertion member, and providing a partial weld at an overlap portion where the hollow member and insertion member overlap to correct the concentricity of the hollow member and the insertion member.

Abstract: Surprisingly, silver-copper-palladium brazing alloys, which have hitherto been used only for the brazing of components of the same material, are also very well suited for brazing directly titanium to stainless steel if, the latter component clasps the titanium component tightly, so that the cold joint is under constant compressive stress. In a method for forming the titanium-steel compound the titanium component is provided with a cylindrical end which has a smaller out-side diameter than an adjacent main portion whose external surface is a first surface to be brazed. The cylindrical steel component is a sleeve whose inside diameter is equal to the outside diameter of the main portion and whose internal surface is a second surface to be brazed. A silver-copper-palladium brazing alloy is placed around the end of the titanium component. The steel sleeve is slipped thereover.

Abstract: The disclosure is for a method of installing a heat pipe within another structure. A completely processed heat pipe is coated with solder and inserted into a cylindrical hole within the structure with sliding clearance. The casing of the heat pipe is then expanded into tight contact with the surrounding hole by heating the heat pipe and expanding the heat pipe casing with the heat pipe's own internal vapor pressure. The application of heat also simultaneously melts the solder to bond the heat pipe into the hole.

Abstract: With the present invention, a reflow soldering method is provided for soldering a nonvertically approaching lead, which is part of a nonvertically approaching device (e.g, an edge connector), to a corresponding soldering surface (e.g., a pad on a circuit card) that includes solder. The soldering surface and solder are heated in an oven to melt the solder. While the solder is liquids, the nonvertically approaching lead is mated with the soldering surface as it is inserted into the solder. The soldering surface, solder, and nonvertically approaching lead are then cooled, and the solder solidifies to conductively mount the nonvertically approaching lead to the soldering surface.

Abstract: A process for the manufacture of cladded metal pipes facilitates joining of a tube blank and a coaxially disposed pipe section received therein, for subsequent extrusion of a resultant tube blank-pipe combination to form an internally-clad pipe of desired dimension. The pipe section, which is inserted into the tube blank, is expanded radially by internally directed pressure, while force is axially applied to maintain the expansion of the pipe section following removal of the applied internal pressure and axial force. A mechanically joined tube blank-pipe combination thus formed is extruded to form a finished pipe of desired profile in which a diffusion bond is present between material layers comprising the internally-clad pipe corresponding to the pipe section and the tube blank.

Abstract: A cooling drum can continuously cast a favorable band-shaped cast piece having little thermal deformation. The cooling drum comprises a three-layer structure including a rigid member, a cooling member metallurgically bonded to the outside of the rigid member, and a heat-resistance member plated by electro-deposition on the outer circumferential surface of the cooling member. The rigid member is made of austenite group stainless steel, the cooling member is made of Cu or Cu-alloy, and the heat-resistance member is made of either Ni or its alloy or Co or its alloy.

Abstract: A method of making a gastight connection between a conductor and an insulation in form of a tube made of a temperature-resistant material, includes the steps of inserting a conductor-forming wire of metal in the tube and heating the wire within the tube to a temperature above its melting point, whereby the tube essentially maintains its configuration.

Abstract: A method of manufacturing golf club is to design the contour of a club head and a club shaft. Sheet metal forming for divided golf club head are formed by stretching the Titanium Alloy plate within the forming dies, then processed with stress relief. Assembly welding are processed in a vacuum chamber where inner-gas, argon, is filled therein to avoid any inpurity may occur on the product during manufacture. Temperatures for stress relief, solid solution and aging are controlled in various degree depending upon each different procedures in order to form a best quality in vacuum furnace where vacuum gauge is best under ten to the negative fourth power of TORR.

Abstract: A shaft for such items as sporting goods, including golf clubs fishing rods bicycle frames, and ski poles is constructed of metallic tubular structures. The hollow tubular shaft is brazed to a helical coil of reinforcing wire which fits snugly against the inside surface of the shaft. Brazing is accomplished by fitting the helical reinforcing wire into the tubular shaft and placing the assembly inside a controlled atmosphere or vacuum furnace where heat is applied to initiate the brazing function. By using appropriate metals and alloys the brazing and hardening is accomplished simultaneously without the use of flux. The proper choice of metals and the gauge of the metals ensures the desired strength, rigidity, and torsional characteristics of the shaft.

Abstract: Disclosed is a process of preparing a composite wire which comprises sealing one end of a pipe to be employed as a jacket, inserting a bar to be employed as a core into the pipe and conducting a hot processing of the pipe while vacuum-sucking the pipe from the other end thereof. In accordance with the present invention, the strength of the resulting composite wire is sufficient, and the number of operations can be reduced, that is, the wire can be prepared under the excellent workability and productivity.

Abstract: A tube is formed from a polycrystalline silicon carbide having a density of from 3.18 to 3.21 g/cm.sup.3, a maximum impurity content of 20 ppm, and imperviousness to fluids by a process which comprises precipitating the silicon carbide on the surface of a rod-shaped graphite structure by a chemical vapor-phase synthesis method and thereafter removing the graphite structure. A water-jet nozzle of high resistance to abrasive wear can be produced by using this tube as an inner tube thereof to form the flow path for a water jet to be ejected therethrough.

Abstract: A splined assembly 10 is disclosed and includes a generally annular outer spline member 12 into which a second generally annular inner spline member 14 is rotatably placed. Member 12 includes a plurality of splines 22, 24, each having a snap ring reception slot 30 formed therein. In a first embodiment, housing member 12 also includes a band 34 which substantially surrounds the housing member 12 and overlays slots 30. In a second embodiment, housing 12 includes a plurality of elliptically protruding portions 40, each of which is positioned between pairs of adjacent splines 22, 24. Both band 34 and portions 40 are effective to prevent structural deformation caused by the received snap ring.

Abstract: A small thick-walled composite metal fuel injection tubing for a diesel engine, for example, is manufactured from an outer carbon steel pipe, and an inner stainless steel pipe press-fitted in the large diameter carbon steel pipe by drawing. The press-fitted mating surfaces of the inner and outer pipes are metallurgically and integrally bonded together by heat-treating. As a result, at least an inside wall surface of the inner stainless steel pipe has a diffused layer of at least one kind of metal, or an alloy of two or more kinds ,of metals in combination, selected from the group consisting of Ni, Cr, Mo, Co, Al and Cu.

Abstract: This invention relates to a method of manufacturing bi-metallic tubing by the successive steps of explosive bonding, hot extrusion and co-extrusion. Bi-metallic tubing, having an inner wall made from a corrosion resistant material, is of particular use in the oil and gas industries. The invention offers a number of advantages over previously known manufacturing methods, such as increased cladding capacity, reduction in the number of joints required, and an improvement in dimensional accuracy. These are achieved by explosively bonding a tube 3 of a first metal to a substantially incompressible billet 1 of a second metal. A length of the bonded composite 15 so formed is subsequently hot extruded to form a bi-metal shell 25. A length of the shell 25 is then placed within the bore of a hollow billet 33, the interface 35 formed between the shell 25 and billet 25 sealed, and the assembled composite 39 so formed co-extruded to form a bi-metal tube 41.

Abstract: The present invention relates to a process for the manufacture of zirconium based tubes formed from layers of varying composition. The process consists in preparing the tubular blank which is intended to form the outer layer of the tube by rolling-soldering a sheet, and then in fitting it onto another tubular blank, or core block, of smaller diameter, which is obtained by piercing a small bar, and which may be coated on the inside with a plating, in soldering the ends of said blanks in order to subject the assembly to a treatment of placing it in solution in a beta phase, followed by soaking it in water and drawing it. The invention is used for the production of Duplex or Triplex type tubes with an improvement in the gross weight of zirconium needed to make 1000 kg of useful metal, with good adherence being obtained between the layers of said tube.