Abstract: Disclosed is a ferritic stainless steel sheet including: a chemical composition containing, by mass %, C: 0.025% or less, Si: 0.01% to 2.0%, Mn: 0.01% to 1.0%, P: 0.050% or less, S: 0.010% or less, Cr: 10.5% to 20.0%, Al: 0.01% to 0.50%, Ni: 0.01% to 0.60%, Ti: 0.10% to 0.50%, and N: 0.025% or less, with the balance being Fe and inevitable impurities; and a coating layer including at least one coating layer selected from the group consisting of an Al coating layer, an Fe coating layer, and a Si coating layer on one or both sides thereof, in which the coating layer has a total thickness of 30 nm to 150 nm per side.

Abstract: According to one embodiment of this disclosure, a coating includes a plurality of elongated reinforcing materials. The coating includes a bond coat in which a first portion of a first elongated reinforcing material is embedded. The coating further includes a ceramic coat adjacent the bond coat in which a second portion of the first elongated reinforcing material is embedded.

Abstract: The present invention provides a method for manufacturing a high-strength galvannealed steel sheet. The method includes hot-rolling a slab to produce a hot-rolled sheet having a microstructure in which a total area ratio of bainite and martensite is 80% or more, cold-rolling the hot-rolled sheet to produce a cold-rolled steel sheet, continuously annealing the cold-rolled steel sheet by heating to 750° C. to 900° C. at an average heating rate of 8° C./s or more from 500° C. to an A1 transformation point, holding the steel sheet for 10 seconds or more, and then cooling the steel sheet to a temperature region of 300° C. to 530° C. at an average cooling rate of 3° C./s or more from 750° C. to 530° C., galvanizing the steel sheet, and further coating-alloying the steel sheet in a temperature region of 540° C. to 600° C. for 5 to 60 seconds.

Abstract: A method for drying a strip (3) or sheet metal that runs through a rolling mill is characterized in that the strip (3) or the sheet metal is cooled to a lower temperature in a cooling section by means of a coolant, in particular a cooling liquid, down-stream of a hot strip mill (1) or, in case of sheet metal, after passing through at least one roll stand (2), and in that the coolant, in particular the cooling liquid, and subsequently the moisture remaining on the strip (3) or the sheet metal is removed from the strip (3) or sheet metal by means of a drying apparatus (10).

Abstract: The present invention relates to a method for diffusion treatment of a coating on an engineering part resistant to marine climate, comprising: Step 1. pretreating the part; Step 2. preheating the part in a protective atmosphere furnace; Step 3. immersing the pre-heated part in a plating solution in a way that the part is rotated in the submerging process; Step 4. carrying out diffusion treatment, i.e., placing the immersion-plated part into a vacuum furnace, maintaining at 800 to 950° C. for 1 to 3 hours, and then cooling it down prior to discharge, such that atoms at an interface are diffused to form a diffusion layer on a substrate, achieving metallurgical bonding between the coating and the substrate. Treatment by the method of the present invention enables the part to have full resistance to corrosion and scouring erosion under marine climate.

Abstract: System and method of producing multi-layered aluminum alloy products are disclosed. A multi-layered aluminum alloy product may be formed by first heating a first aluminum alloy to a first temperature where the first temperature is at least about 5° C. lower than the eutectic temperature of the first aluminum alloy, second heating a second aluminum alloy to a second temperature where the second temperature is at least about 5° C. higher than the liquidus temperature of the second aluminum alloy, and coupling the second aluminum alloy to the first aluminum alloy to produce a multi-layered aluminum alloy product.

Abstract: There is provided a hot-dip Al—Zn coated steel sheet that has a steel sheet containing Si and Mn as a base steel sheet and has excellent coating appearance and corrosion resistance. The Al—Zn coating layer has an Al content in the range of 20% to 95% by mass. The Al—Zn coating layer has a Ca content in the range of 0.01% to 10% by mass. Alternatively, the Ca and Mg content is in the range of 0.01% to 10% by mass. A steel sheet surface layer within 100 ?m from a surface of the base steel sheet directly under the Al—Zn coating layer contains less than 0.060 g/m2 per surface of an oxide of at least one selected from Fe, Si, Mn, Al, P, B, Nb, Ti, Cr, Mo, Cu, and Ni in total.

Abstract: A high-strength quenched formed body containing a layer on the surface of an after-quenching formed-body steel material in which layer Zn is a major component and which layer contains 30% by mass or less of Fe, and which layer is present in an amount of 30 g/m2 or more. A quenched formed body is produced by quenching a zinc-plated steel material which includes a zinc-plated layer containing each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere containing 0.1% by volume or more of oxygen.

Abstract: A method is provided for coating a surface of an Fe-based, hardenable sintered, sinter-forged or forged component, and in particular for internally coating the large end bore of a motor vehicle connecting rod with a bearing coating, wherein the coating material applied to the component surface is converted to a molten state during the coating process. A material bond, which is durable even under high loads, is attained between the coating and the base material of the sintered or forged component without any disturbing residual stresses by a simple manufacturing method due to the fact that during the coating process the component surface is briefly heated in the untreated state of the component above the austenitization temperature to a temperature level having a significantly increased diffusion rate within the limits of the outer edge zone having less carbon for reasons relating to the manufacturing process.

Abstract: A high-strength quenched formed body containing a layer on the surface of an after-quenching formed-body steel material in which layer Zn is a major component and which layer contains 30% by mass or less of Fe, and which layer is present in an amount of 30 g/m2 or more. A quenched formed body is produced by quenching a zinc-plated steel material which includes a zinc-plated layer containing each of Al and Si having alloying-retarding function and readily-oxidizing function independently or compositely, in an amount of 0.15% by mass or more, after heating it to 800° C. or more and 950° C. or less in an oxidizing atmosphere containing 0.1% by volume or more of oxygen.

Abstract: Disclosed is a steel tube with superior corrosion-resistance treated with plating and a manufacturing method of the same. The manufacturing method of the steel tube includes the steps of: preheating a steel tube formed through a milling process; maintaining the temperature of the preheated steel tube above a predetermined temperature, and creating a reduction atmosphere; melting an Al—Zn alloy containing 55 wt % of aluminum and 43.4-44.9 wt. % of zinc, and plating the molten alloy over the surface of the steel tube; cooling the steel tube; and coating the surface of the steel tube with a resin.

Abstract: A rust inhibitor which ensures the simplicity of application typical for a coating process and can demonstrate excellent characteristics similar to those obtained with a metal spraying method. The rust inhibitor is manufactured by admixing zinc and aluminum as fine powders of inorganic metals, which are manufactured with a stamping mill to have a flaky shape, to a modified silicone resin solution. A silane-type silicone resin is used for the modified silicone resin solution. For example, a mixed solution of an organosilane-type silicone resin and an oligomer-type silane coupling agent and the like is used.

Abstract: Exemplary embodiments of the present invention can provide a hot dip galvannealed steel sheet which has excellent corrosion resistance, workability, coatability and appearance. The exemplary galvannealed sheet can include an ultra-low carbon steel sheet having a plating layer which includes about 8 to 13% Fe, about 0.05 to 1.0% Ni, about 0.15 to 1.5% Al, and a balance of Zn and unavoidable impurities. An exemplary method for producing a hot dip galvannealed steel sheet is also provided which can include cleaning an annealed ultra-low carbon steel sheet, preplating it with Ni, rapidly heating the sheet in a nonoxidizing or reducing atmosphere, plating the sheet in a galvanization bath containing Al, wiping it, then rapidly reheating it and either cooling the sheet without any soaking time or soaking and holding it for less than 15 seconds and then cooling it.

Abstract: A coated superalloy article is prepared by furnishing a nickel-base superalloy article substrate having a rhenium content of not less than about 4.0 percent by weight, and thereafter depositing an aluminum-containing coating onto a surface of the article substrate. The aluminum-containing coating includes an additive zone having an average aluminum content of not greater than about 27 percent by weight, and a diffusion zone of interdiffusion with the article substrate. A ratio of a thickness of the additive zone to a thickness of the diffusion zone is not greater than about 3:1, and is preferably about 1:1.

Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to control the spangle facet size of the coated product, improve tension bend rust stain performance, and improve coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.

Abstract: Using a scan coating method, a liquid film is formed on a substrate having a temperature distribution for correcting a temperature distribution of a liquid film caused by the heat of evaporation due to the volatilization of a solvent contained in the liquid film, and then the solvent is removed from the liquid film to form a coating film.

Abstract: A method for forming a metal-containing layer on a substrate is disclosed. A slurry of the metal is first deposited on the substrate; followed by heating to remove volatile material from the slurry, and to form a layer of the metal. In another embodiment, a slurry of aluminum is deposited over the slurry of the metal, before or after the metal has been heat-treated to some degree. A diffusion heat treatment results in a coating which includes the noble-metal aluminide compound. Related articles are also disclosed.

Abstract: A method of coating of steel products such as plate and sheet using an aluminum-zinc coating alloy includes modifying the coating bath with a particulate compound constituent in effective amounts to decrease the spangle facet size of the coated product, improve tension bend rust stain performance, and coated product paintability. Constituents include borides such as titanium boride and aluminum borides, carbides such as titanium carbide, and aluminides such as titanium aluminide. The method produces a coated steel product that does not require temper rolling for painting.

Abstract: The present invention relates to galvanized steel having a high aluminum content in the coating, as well as a batch hot-dip galvanization process for making such steel. The galvanized steel herein has a coating comprising an inner layer of intermetallic iron aluminum compounds, such as Fe2Al5 (which may have some zinc present), and an outer layer of intermetallic zinc aluminum compounds containing from about 17% to about 40% (preferably about 22%, the Zn—Al eutectoid) aluminum (which may have some iron present). The batch hot-dip galvanization process for making such steel comprises: (a) fluxing the steel by electroless plating on the surface of the steel of a metal such as tin, copper or nickel; and (b) dipping the fluxed steel into a molten galvanization bath comprising zinc and from about 17% to about 40% aluminum.

Abstract: A sol-gel catalyst composition for electroless plating includes a metal alkoxide in a polar organic solvent, an acid, a chloride salt or acid chloride, and a catalytic metallic salt. The sol-gel catalyst adheres to smooth surfaces without the preconditioning normally associated with other sol-gel smooth surface catalyst, as well as a method for coating a substrate with the sol-gel catalyst composition, and then a metallic platting solution.

Abstract: The present invention relates to galvanized steel having a high aluminum content in the coating, as well as a batch hot-dip galvanization process for making such steel. The galvanized steel herein has a coating comprising an inner layer of intermetallic iron aluminum compounds, such as Fe2Al5 (which may have some zinc present), and an outer layer of intermetallic zinc aluminum compounds containing from about 17% to about 40% (preferably about 22%, the Zn—Al eutectoid) aluminum (which may have some iron present). The batch hot-dip galvanization process for making such steel comprises: (a) fluxing the steel by electroless plating on the surface of the steel of a metal such as tin, copper or nickel; and (b) dipping the fluxed steel into a molten galvanization bath comprising zinc and from about 17% to about 40% aluminum.

Abstract: A method of treating the surface of a rough, plastic object to produce a high gloss, textured and/or coloured finish. A rapid prototype treated according to the present method assumes the appearance of an injection molded part, without the usual high costs associated with producing the injection mold. In one embodiment, first step involves of removing the pores in the porous part, at least at the outer layers of the part, followed by a smoothening process of filling the voids between the miniature steps with a hardener to give a smooth surface, on which further post-processing may be performed.

Abstract: A method in accordance with our invention for providing texture bumps on a substrate comprises the step of forming elliptical ridge-shaped bumps on the substrate. In one embodiment, substrate is used in the manufacture of a magnetic disk used in a disk drive. The elliptical bumps cause less vibration of the read-write head than circular bumps. The elliptical bumps also provide reduced friction between the disk and a read-write head during use.

Abstract: A process for non-continuous galvanization of a metal object with a Zn—Al alloy including the steps of pre-coating the object with a metallic layer of sufficient thickness to protect the object from oxidation and yet sufficiently thin to permit the pre-coating to substantially completely react with or dissolve in the molten Zn—Al bath, subjecting the precoated object to a surface activation treatment by immersing it in hydrochloric acid and thereafter allowing the surface to dry with a protective coating of a chloride salt, and thereafter immersing the object in the Zn—Al bath.

Abstract: A steel material subjected to preliminary treatments to remove an oxide film on the surface is immersed in a molten flux bath in an independent vessel and thereafter immersed in a molten zinc-aluminum alloy bath in a separate vessel to be galvanized with a coating of the alloy. The molten flux bath consists essentially of 5-25 wt % of an alkali metal chloride, typified by sodium chloride, or an alkaline earth metal, and the balance being zinc chloride. The flux bath may additionally contain 1-5 wt % of an alkali metal fluoride typified by sodium fluoride. The method allows for inexpensive, efficient and one-stage galvanizing with a corrosion-resistant molten zinc alloy of a high aluminum content to produce a smooth, uniform and beautiful galvanized layer on the surfaces of various steel materials.

Abstract: A method for hot-dip coating a steel strip comprises: (a) continuously annealing the steel strip in an annealing furnace; (b) introducing the annealed steel strip into a molten metal coating bath through a snout; (c) dipping the annealed steel strip into the molten metal coating bath; (d) controlling a pressure inside of the snout; and (e) discharging a gas containing a metal vapor from the snout to outside of the snout. An apparatus comprises an annealing furnace, a coating pot, a control device for controlling a pressure inside the snout and a gas discharging device.

Abstract: The invention provides a method for the metallizing of precision machine parts coupled with heat-treatment and machining to insure the minimal handling the remachining generally required due to dimensional distortion resulting from the standard heat-treatment used in hardening the metallized coating.

Abstract: A copper-tungsten or copper-molybdenum substrate is plated with a nickel/gold plating by first activating a surface of the substrate. In activating, the surface is contacted to a concentrated alkaline solution at elevated temperature, and then to a concentrated acidic solution. The surface is thereafter plated with a nickel strike layer, plated with a nickel primary layer overlying the nickel strike layer, sintered, re-activated in a concentrated acidic solution, plated with a nickel secondary layer overlying the nickel primary layer, and plated with a gold layer overlying the nickel secondary layer.

Abstract: Composition and method providing a chromium oxide densified insulative coating for a substrate comprising an insulative coating comprised of refractory oxide bubbles with a melting point above that of glass bubbles, a refractory oxide and a solution of a binder capable of being converted to an oxide upon being heated, thereby effecting a bond between the refractory oxide and the substrate. The coating is thin and provides increased thermal barrier characteristics.

Abstract: This invention relates generally to a process for preparing composite particles. More specifically, this invention relates to a process for preparing polymer-coated composite particle dispersions wherein excess polymer is removed by a controlled washing step. This invention further relates to a process for preparing composite particles wherein the particles have an inner core particle coated with at least one polymer coating and at least one shell particle coating.

Abstract: A coating apparatus and method for applying a coating to a workpiece, comprising:a vessel to contain molten metal;an induction coil disposed about said vessel; and,temperature regulation means;wherein, in use, said induction coil induces a magnetic field within said vessel such that a meniscus of molten metal is formed above said vessel, through which said workpiece is passed for coating, whilst said temperature regulation means regulates temperature of said molten metal and/or controls the meniscus height of said meniscus.

Abstract: A process for coating metal substrates including cleaning, degreasing and activating the substrate wherein a strongly adhering bonding agent layer is deposited on the substrate. The bonding agent layer comprises a thickness of aluminum. The bonding agent layer is deposited at a temperature not exceeding 300.degree. C.

Abstract: Ceramic fibers may be produced by the electrophoretic deposition of metal oxide upon a conductive fiber core, which core may be subsequently removed.

Abstract: It is an object to provide a process for manufacturing galvannealed steel sheets exhibiting excellent anti-powdering property when press formed, and uniform frictional properties in a coil. A steel strip is galvanized in a bath having a low aluminum content after entering it at a high temperature as defined in relation to the aluminum content of the both, so that the formation of a .zeta. phase may be promoted. Then, the strip is heated for alloying in a high-frequency induction heating furnace so as to have a temperature not exceeding 495.degree. C. when leaving the furnace to yield a plated steel strip having a coating containing a uniformly distributed .zeta. phase. After such heat treatment and cooling, the strip can be plated with an iron or iron-alloy top coating having an iron content of at least 50% and a coating weight of at least 1 g/m.sup.2 to achieve an improved press formability.

Abstract: This patent teaches a new method of roughening the surface of a magnetic recording medium in order to reduce the stiction and friction between a recording head and the medium to thereby improve mechanical reliability. During this method, the medium substrate is heated to form second phase precipitates which result in roughening of the medium surface. The medium roughness can be controlled by proper selection of the heating temperature and time and the substrate alloy. This results in improved contact-start-stop (CSS) performance of the medium. The method of the present invention allows for lower costs and potentially higher throughput than conventional texturing processes.

Abstract: Steel alloys containing chromium may be hot dip aluminized in a bath having up to 15% silicon with improved wettability by using a bright preannealing practice in a box furnace having a substantially pure hydrogen atmosphere. The surfaces of the preannealed steel are easily coated if the box annealing furnace has a dew point of less than -60.degree. C. (-75.degree. F.). The preannealing should also include a minimum soak of at least 1 hour at a temperature of 675.degree. C. to 785.degree. C. (1250.degree. F. to 1450.degree. F.). It is important that the surfaces of the strip after preannealing are not removed prior to aluminizing. During the aluminizing operation, the strip temperature does not need to be heated to much above the bath temperature since the strip has already been preannealed. The furnace is maintained to avoid oxidation with an atmosphere which is typically a nitrogen, hydrogen or a hydrogen-nitrogen mixture.

Abstract: A process for coating a steel strip, particularly ferritic stainless steel, with aluminum by hot quenching, in which the strip is preheated to a temperature less than 500.degree. C. in a first non-oxidizing atmosphere containing a quantity of oxygen less than 3%, the strip is then heated to a temperature less than 950.degree. C. in a second non-oxidizing atmosphere, the strip is then conveyed to an atmosphere (3, 4) which is non-reactive at the coating temperature, and, finally, the strip is quenched in a coating bath.

Abstract: A shallow vessel (50,52) for being horizontally disposed when containing a molten metal or metal alloy (66) for meniscus coating one side of a clean metal strip (34A) when the strip is moved vertically past one side of the vessel. The vessel includes a shell (68) such as austenitic stainless steel, a refractory lining (70), a molten metal departure lip (72) mounted on the upper surface of the side of the vessel, a spirally shaped induction coil (64) for maintaining the molten metal above its melting point and a flux concentrator (74). The induction coil is positioned below the refractory lining and the flux concentrator is positioned below the induction coil. The induction coil and the flux concentrator underlie the area occupied by the molten metal.

Abstract: A method of pretreating and hot-dip coating aluminum or aluminum alloys on a chromium-containing steel strip to provide an improved coating comprising annealing final gauge steel strip in an oxygen excess atmosphere to produce a chromium-rich oxide on the surface and thereafter electrolytically descaling the strip in an aqueous salt solution to remove the oxide and to expose a chromium depleted surface of the strip. The strip is then transported to a coating line where it is heated to a temperature at or above the temperature of a bath of aluminum or aluminum alloy. A substantially hydrogen atmosphere is maintained over the bath while the dew point is maintained below minus 35.degree. C. The strip is then drawn through the bath to coat the strip.

Abstract: Continuous hot dip aluminum coated ferritic chromium alloy steel strip. Strip is cleaned by heating to a temperature no greater than about 650.degree. C. in a direct fired furnace. The cleaned strip is further heated in a protective atmosphere containing at least 95% by volume hydrogen, cooled in the protective hydrogen atmosphere to near or slightly above the melting point of an aluminum coating metal, and passed into a bath of the aluminum coating metal. The low direct fired furnace cleaning temperature and hydrogen protective atmosphere provides good wetting of a chromium alloy steel surface to prevent uncoated areas or pin holes in the aluminum coated layer.

Abstract: Continuous hot dip aluminum coated ferritic chromium alloy steel strip. Strip is cleaned by heating to a temperature no greater than about 650.degree. C. in a direct fired furnace. The cleaned strip is further heated in a protective atmosphere containing at least 95% by volume hydrogen, cooled in the protective hydrogen atmosphere to near or slightly above the melting point of an aluminum coating metal, and passed into a bath of the aluminum coating metal. The low direct fired furnace cleaning temperature and hydrogen protective atmosphere provides good wetting of a chromium alloy steel surface to prevent uncoated areas or pin holes in the aluminum coated layer.

Abstract: A method of producing a chromium-containing steel sheet hot-dip plated with aluminum. A steel sheet containing not less than about 3 wt % of chromium is pre-plated at each side thereof with an iron-phosphor alloy so that a pre-plating layer of the iron-phosphor alloy about 0.05 to 3.0 .mu.m thick is formed on each side of the steel sheet. The steel sheet is heated and then subjected to an aluminum hot-dip plating by being dipped in a bath of molten aluminum or a molten aluminum alloy. An undercoat nickel plating layer may be formed on the steel sheet in advance of pre-plating with the iron-phosphor alloy.

Abstract: A method for depositing metallic lines on an IC chip or mask is described using a focused ion beam (FIB) with a much lower ion dosage than previously required, on the order of 10.sup.14 -10.sup.15 ions/cm.sup.2. A substrate is scanned with the FIB to produce a series of nucleation sites on the substrate surface. These nucleation sites can be in an adlayer or can be produced by lattice damage or sputtering directly in the substrate material. The substrate is then exposed to a source gas containing the material to be deposited, while heated to a temperature slightly less than the spontaneous thermal decomposition temperature of the source gas. This results in a well-defined line of materials being deposited from the source gas along the line defined by the nucleation sites. The ratio of the spontaneous activation energy to the autocatalytic activation energy for the gases is preferably at least about an order of magnitude, and the FIB is preferably moved in multiple scans across the desired line.

Abstract: Continuously hot dip aluminum coated ferritic chromium alloy steel strip. After the steel has been given a pretreatment to remove surface contaminants, the steel is protected in a hydrogen atmosphere until it is passed into the molten aluminum coating metal. The coating metal readily wets the steel surface to prevent uncoated areas or pin holes in the coating layer.

Abstract: The metal substrate (4) is coated with a coating (6) of another metal of alloy of 4-50 .mu.m thickness by deposition of a molten metal or alloy (5) through a nozzle (2), the melting temperature of this metal or alloy being lower than that of the substrate metal. This coating comports, starting from the substrate, a layer of intermetallic compound of thickness comprised between 0.5 and 4 .mu.m, within a limit not exceeding 40% of the total thickness, the remainder of the coating being formed of the initial coating metal of alloy in a proportion of 97 to 99.5% by weight.

Abstract: Methods for depositing metals on or removing metals from substrates are provided which involve the use of electrolytic cells comprising an anode and cathode, sulfuric acid, and a chalcogen-containing compound soluble in said bath and having the empirical formula ##STR1## wherein X is a chalcogen, each of R.sub.1 and R.sub.2 is selected from hydrogen, NR.sub.3 R.sub.4 and NR.sub.5, at least one of R.sub.1 and R.sub.2 is other than hydrogen, each of R.sub.3 and R.sub.4 is hydrogen or a monovalent organic radical, and R.sub.5 is a divalent organic radical, in which the molar ratio of the chalcogen compound to sulfuric acid is about 1 or more, and the molar ratio of water to the combination of acid and chalcogen compound is about 20 or less.

Abstract: Continuously hot dip aluminum coated ferritic chromium alloy steel strip. After the steel has been given a pretreatment to remove surface contaminants, the steel is protected in a hydrogen atmosphere until it is passed into the molten aluminum coating metal. The coating metal readily wets the steel surface to prevent uncoated areas or pin holes in the coating layer.

Abstract: Aluminum is flow-coated onto ferrous strip by reducing the hot strip in hydrogen, cooling it to 650.degree.-680.degree. C. in nitrogen and spraying molten aluminum on it such that the aluminum splats flow into each other but solidify in 0.2-0.5 seconds. The aluminum is bonded to the strip through an intermetallic layer less than quarter of the total coating thickness, the aluminum having a cast structure.

Abstract: A method and apparatus for uniformly cladding a metal wire with a coating of a second metal is provided. The metal wire to be coated is preheated in a non-oxidizing atmosphere to a temperature slightly less than the melting point of the metal coating. The metal coating is present as a molten metal in an atomization chamber. A source of preheated, pressurized, non-oxidizing gas is utilized to inject such gas into spray nozzles. Each spray nozzle also receives molten metal that is drawn into and atomized in the nozzle. The molten metal is thusly sprayed onto the metal wire moving through the atomization chamber.

Abstract: An improved method for manufacturing a composite metal wire including a core metal wire having extruded therearound a coating metal layer which is different in material from the core metal wire, includes feeding the coating metal into a narrow passageway which is defined between a circumferential groove formed on the outer edge of a rotary wheel and a close fitting surface of a fixed shoe block, carrying the coating metal towards an outlet end of the passageway by frictional drag with the surface of the passageway in accordance with the rotation of the wheel, and passing a core metal wire harder in material than the coating metal through a covering chamber of a larger cross sectional area which is provided with a die and a nipple at the front and rear portions, respectively, whereby the core metal wire is covered with the coating metal in the covering chamber so that a predetermined construction of a composite metal wire is extruded through the die.