Abstract: A method of making a stabilizer bar from a tubular blank to which a bonding agent is applied to the inside surface of opposite ends of the tube. The tube may be provided with tubular inserts that are also provided with a bonding agent. The bonding agent may be an adhesive that is cured and then the bonding agent is placed in an oven to melt the bonding agent. The ends are swaged to shape and the ends of the tube are trimmed and pierced to form a fastener eyelet in each end. The stabilizer bar is then heated for hot working to form the bends along the length of the bar. After forming to shape, the stabilizer bar is quenched and annealed.

Abstract: When using AA3000 series and AA1000 series aluminum alloys to produce extruded products for heat exchanger applications, by controlling the level of copper and nickel in the alloy to very low levels it is possible to produce excellent corrosion resistance both before and after a brazing cycle. To achieve these results, the copper content should be no more than 0.006% by weight and the nickel no more than 0.005% by weight. A typical alloy of the invention contains about 0.001-0.5% by weight manganese, 0.001-0.7% by weight iron, 0.001-0.02% by weight titanium, 0.001-0.3% by weight silicon, less than 0.006% by weight copper, less than 0.005% by weight nickel and 0.001-0.02% by weight zinc, with the balance consisting of aluminum and incidental impurities. No zinc addition to the alloy is required either by zinc spraying or by alloy addition.

Abstract: A method of making a stabilizer bar from a tubular blank to which a mixture of an adhesive and powdered metal is applied to the inside surface of opposite ends of the tube. The adhesive is cured and then the fuseweld powder is placed in an oven to melt the fuseweld powder. The ends are swagged to shape flat tubes ends that are trimmed and pierced to form a fastener eyelet in each end. The stabilizer bar is then heated for hot working to form the bends along the length of the bar. After forming to shape, the stabilizer bar is quenched and annealed.

Abstract: A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.03% to about 0.2% C, about 2.0% or less of Si, not less than about 1.0% to about 1.5% Mn, about 0.1% or less of P, about 0.01% or less of S, about 1.0% or less of Cr, about 0.1% or less of Al, about 0.1% or less of Nb, about 0.1% or less of Ti, about 0.1% or less of V, and about 0.01% or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500° C. to about 900° C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 590 MPa and an n×r product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar3 transformation point.

Abstract: A welded steel pipe is formed by heating or soaking an untreated welded steel pipe having a steel composition containing, on the basis of mass percent: about 0.05 % to about 0.2% C; about 0.2% or less of Si; about 1.5% or less of Mn; about 0.1% or less of P; about 0.01% or less of S; about 0.1% or less of Al; and about 0.01 % or less of N; and by reduction-rolling the treated steel pipe at a cumulative reduction rate of at least about 35% and a final rolling temperature of about 500° C. to about 900° C. The welded steel pipe exhibits excellent hydroformability, i.e., has a tensile strength of at least about 400 MPa and an n×r product of at least about 0.22. The treated steel pipe is preferably reduction-rolled at a cumulative reduction rate of at least about 20% below the Ar3 transformation point. The welded steel pipe is suitable for forming structural components.

Abstract: A vehicle structural beam, such as a door intrusion beam, which possesses an elongate tubular beam part which at opposite ends is provided with mounting flanges for securement to a vehicle frame. The elongate tubular beam part and the flanges provided at opposite ends are defined by an integral, one-piece, monolithic steel structure which has been initially roll-formed from an elongate flat metal sheet to define the closed tubular structure of the tubular beam part, and which has been subjected to heating and quenching so that the elongate tubular beam part is of relatively high strength steel throughout its entire length, whereas the integrally and monolithically joined end flanges remain as lower strength steel which has been significantly unaffected by the heat treatment and quenching so as to permit appropriate shaping thereof and ease of welding to the vehicle frame.

Abstract: A method for producing an autogenous welded tubular metal article having a substantially uniform grain size, including the weld-affected area thereof. This is achieved by applying to the metal article a series of cold reduction and annealing operations that in combination render the grain size of the weld-affected area uniform with respect to the remainder of the cross-section of the article, and particular the visual appearance of the cross-section.

Abstract: The invention concerns a method for producing parts made of thin, light and rigid metal alloy essentially having the following steps: producing a core having the part shape; producing cavities in the core; producing shells made of metal alloy combined with reinforcing fibers with high modulus of elasticity; densifying the shells; and diffusion welding of the shells on the core by compression at temperature and pressure conditions for isothermal forging of the metal alloy used.

Abstract: Disclosed is a hardfacing alloy capable of withstanding abrasion of the order of silicious earth particles and weldable in crack free state 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, high abrasion resistance as welded without working, and in tool joints and stabilizers achieves an optimum balance between tool joint and stabilizer wear resistance and induced 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, methods of producing the hardfacing alloy, and methods of applying the hardfacing alloy to surfaces including preheat and post-welding conditions to withstand abrasive use.

Abstract: A process for producing clad pipe comprises forming a hollow body (S10) of base material, bonding a cladding material metallurgically to the base material (S12) to form a composite body and subsequently extruding the composite body to form a pipe. This process allows the metallurgical bond to be validated using non-destructive methods prior to extrusion. Any areas that are unbonded will be detected, thereby reducing wastage. Moreover, because the metallurgical bond is achieved prior to extrusion, the cladding thickness is controlled during the extrusion process, avoiding migration of the clad material into the base material by disproportionate amounts.

Abstract: The method for coating the seam of a welded tube of this invention includes applying a mixture of the desired protective metal coating in powdered form and a liquid flux over the internal surface of the welded seam with the welded seam located in a lower portion of the tube, then heating the welded seam to the melting temperature of the protective metal coating, melting the metal coating which flows over the seam forming an adherent metallurgical bond. The preferred apparatus includes a wand which extends between the opposed edges of the open seam tube in the welding apparatus and extends axially through the tube to overlie the welded seam spaced from the welding apparatus. The wand includes three conduits transmitting the powdered protective metal coating, liquid flux and nonoxidizing gas to the applicator which includes a nozzle which atomizes and sprays the liquid flux over the internal surface of the seam and which combines with the powdered protective metal coating to form a paste.

Abstract: A novel method and apparatus to apply a corrosion protection in the form of a zinc (or other sacrificial anodic material) tape to a tubular member such as pipe or coiled tubing to used as an underground or underwater pipeline or flow line is disclosed. The zinc tape is applied with sufficient heat and pressure to form a metallurgical bond between the zinc tape and underlying metal pipe. This allows the zinc tape to act simultaneously as a continuous protective metal barrier to the normal scrapes and nicks the pipe experiences during installation and as a sacrificial anode. The novel apparatus preheats the zinc tape with a nozzle containing heated gas such as nitrogen as it approaches the pipe surface. At the point of contact with the pipe surface, the nozzle continues heating the tape and pipe surface while a plurality of pressure rollers exert sufficient force on the zinc tape to form a metallurgical bond between the zinc tape and the pipe surface.

Abstract: An improved method of coating the welded seam of a metal tube comprising heating the weld area only of the metal tube to a first temperature which is less than the melting temperature of the protective metal coating, applying the protective metal coating over the seam and heating the entire tube preferably with a full body induction coil to a second temperature which is at least equal to the difference between the first temperature and the melting temperature of the metal coating, such that the temperature of the seam area is heated to a temperature equal to or greater than the melting temperature of the metal coating, whereby the metal coating firmly adheres to the welded seam.

Abstract: The present invention is a metallic composite which is resistant to erosion and corrosion at the high temperatures and pressures which are encountered in gun tubes, including projectile launchers. This composite comprises a ductile layer of rhenium or a rhenium alloy containing more than 20 percent rhenium, and a layer of a lower cost high strength material such as steel, nickel, nickel alloy, cobalt, or cobalt alloy. A solid solution of the two metals is formed between the two layers making a metallurgical bond. The metallurgical bond may be enhanced through the use of a bond promoter having solubility with both metallic layers.

Abstract: For bonding pure beryllium to a copper alloy, a beryllium-copper material comprising a single layer or multiple layers having a thickness of 0.3-3.0 mm and containing at least 50 atomic % of Cu is inserted between the pure beryllium and the copper alloy to prevent bonding strength from degrading in the bonding process or during operation of a nuclear fusion reactor, by effectively mitigating formation of brittle intermetallic compounds and generation of thermal stress at the bonding interface.

Abstract: A multilayer composite tubular structure for use as a stent in surgical procedures has an outer layer of biocompatible material, a middle layer of radiopaque material, and an inner layer of biocompatible material. The layers are metallurgically bonded, to form a composite stent which is ductile and permits large deformation without delamination between the biocompatible and radiopaque layers. The composite structure formed is visible on a fluoroscope, yet does not obstruct the details of the stent itself, or of the anatomical features surrounding the stent.A process of forming a multilayer composite tubular structure is also disclosed. A tube formed from radiopaque material is coaxially surrounded by a tube of biocompatible material. The tubes are simultaneously reduced, such as by tube drawing, swaging, or deep drawing, until a composite structure of a desirable diameter and wall thickness is formed. The tubes are then heat treated to cause diffusion bonding of the biocompatible and radiopaque layers.

Abstract: In a method of the present invention for manufacturing a welded clad steel tube, an alloy including a corrosion-resisting or heat-resisting alloy is overlaid on a raw steel tube to manufacture a cold steel tube. Then, a cold or warm working is subjected to the clad steel tube. The clad steel tube is subjected to a heat treatment at a temperature exceeding a recrystallization temperature of the alloy.

Abstract: Methods for making an aluminum drive shaft for automobiles or trucks or other drive shaft applications from aluminum alloy tube and methods for making said tube including using an aluminum alloy containing about 0.5 to 1.3% magnesium, about 0.4 to 1.2% silicon, and about 0.6 to 1.2% copper and preferred practices for making the tube. The preferred practices include extrusion temperature and other aspects of extrusion, along with cold drawing. One preferred practice includes reducing tube diameter and increasing wall thickness at one or both ends of the drive shaft tube shortly after solution heating and quenching and applies to various 6000 Series type aluminum alloys.

Abstract: An improved elongate aluminum alloy product, and a method of producing such a product, ideally suited for use as a component in a vehicle frame or subassembly, i.e., body-in-white. The alloy consists of essentially 0.45 to 0.7% magnesium, and about 0.35 to 0.6%, silicon, and about 0.1 to 0.35%, vanadium, and, 0.1-0.4% iron, preferably 0.15 to 0.3%, the balance substantially aluminum and incidental elements and impurities.

Abstract: A process for fabricating a welded metallic duct assembly includes the steps of forming tubing from a flat form of a metal or alloy, annealing the tubing while applying radially directed pressure to a surface thereof, and then welding an end of the tubing to an article such as a flange, fitting, connector, spacer, or similarly processed tubing to form a duct assembly. The annealing step includes thermal sizing of the tubing in a manner that relieves residual stresses resulting from the forming process. A welded duct assembly fabricated in accordance with this process is substantially free of distortion in the heat affected zone of the weld that adversely affects the fatigue life of the ducting.

Abstract: Disclosed is a method of producing a welded steel tube with excellent inner surface corrosion resistance, in which at least one surface of a steel strip is coated with a first plate layer made of at least one of nickel, cobalt and alloys based on the metals, the plated steel strip is formed into a welded tube with the plated surface being inside, a film-forming material of at least one of tin and tin-based alloys is inserted into the inside of the welded tube and is then heat-treated at a temperature not lower than the melting point of the film-forming material by passing the tube through a continuous heating furnace having a non-oxidizing gas atmosphere therein so that the film forming material as inserted into the welded tube is fused and spread over the first plate layer to form a second plate layer thereon, and the tube is finally cooled.

Abstract: Disclosed is a welded tube with an excellent corrosion-resistant inner surface, in which the inner surface including the bead part has a first plate layer of one metal material selected from Sn, Sn--Zn, Sn--Ni, Ni--P and Ni--B and the first plate layer is overcoated with a second plate layer of one metal material selected from Ni, Co and alloys based on the metals. The welded tube is free from exposure of the steel base out of the plate layer and is also free from cracks, pin holes, overplated spots and peeling of the plate layer. It has excellent corrosion resistance and good workability for working the terminals. The welded tube is produced by forming a first plate layer of Sn, Sn--Zn, Sn--Ni, Ni--P or Ni--B on at least one surface of a steel strip, then forming a second plate layer of Ni, Co or an alloy based on the metals over the first plate layer, shaping the thus plated steel strip into a tube by welding with the plated surface being inside and then heat-treating the tube.

Abstract: In a method of fabricating a channel box for use in a nuclear reactor, Zr-alloy sheet material is formed into a tubular channel box. The method includes solution heat treatment of the Zr-alloy sheet material including quenching from a temperature at which .beta.-phase is present. After the solution heat treatment, portions of the Zr-alloy sheet are thinned relative to other portions by a non-stressing thinning process, such as chemical etching in a bath. The corrosion resistance imparted by heat treatment is retained, and the heat treatment itself is easily performed on material of uniform thickness.

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.

Abstract: This invention relates to a process for thermodynamically treating a region joining two members. In accordance with one aspect of the present invention, are the steps of heating the region to a first temperature generally within a range of 750.degree. F. and 850.degree. F. so as to diffuse a strengthening material in the region into a heat affected zone between the members; maintaining the first temperature for a first selected time within a range of 3 to 20 hours so as to raise the percentage of strengthening material diffusing into the heat affected zone; heating the region to a second temperature generally within a range of 900.degree. F. to 1000.degree. F. so as to initiate hardening of the heat affected zone; maintaining the second temperature for a second selected time generally within a range of 0.5 to 5 hours so as to harden the heat affected zone with minimal decrease in hardening of regions outside the heat affected zone; and cooling the region to room temperature.