497 results about "Arc spray" patented technology

An adjustable spray nozzle with adjustable arc of coverage as well as spray elevation angle and flow rate. A very simple adjustable arc of coverage spray nozzle configuration is also disclosed which may be easily assembled for a particular precipitation rate and/or range of coverage at a selected nominal pressure. Also disclosed is a simple fixed arc of coverage spray nozzle with selectable ranges for a particular precipitation rate.

A sputtering target producing few particles, a backing plate or a sputtering apparatus, and a sputtering method producing few particles. An arc-spraying coating film and a plasma-spraying coating film over the former are formed on the sputtering target, a backing plate, or another surface in the sputtering apparatus, where an unwanted film might be formed. Thus a deposit is prevent from separating/flying from the target, backing plate, or another surface where an unwanted film might be formed in the sputtering apparatus.

A method is described herein for coating the substrate of a component for use in a water cooled nuclear reactor to provide a barrier against corrosion. The method includes providing a zirconium alloy substrate; and coating the substrate with particles selected from the group consisting of metal oxides, metal nitrides, FeCrAl, FeCrAlY, and high entropy alloys. Depending on the metal alloy chosen for the coating material, a cold spray or a plasma arc spray process may be employed for depositing various particles onto the substrate. An interlayer of a different material, such as a Mo, Nb, Ta, or W transition metal or a high entropy alloy, may be positioned in between the Zr-alloy substrate and corrosion barrier layer.

Electric arc spraying a metal onto a substrate produces an anchor layer on the substrate that serves as a surprisingly superior intermediate layer for a catalytic material deposited thereon. Spalling of catalytic material is resisted even when subjected to the harsh conditions imposed by small engines or in a close-coupled position for a larger engine.

The invention provides a method and a process for spraying a composite anticorrosive coating system by electric arc for a steel structure, which belong to the method and the process for anticorrosion of the steel structure. In the anticorrosive coating system, first, rust removal and coarsing are carried out on the surface of the steel structure; then, an anode metal coating is sprayed by electric arc; then, a nanometer modified epoxy seal paint as a primer coating, an MIO epoxy paint or nanometer modified MIO epoxy paint as an intermediate paint coating, and a nanometer modified fluorine-containing polyurethane paint or fluorine-containing polysiloxane paint or siloxane modified acrylic polyurethane as a finishing coating are coated on the metal coating in sequence. The composite anticorrosive coating system has excellent performances of corrosion resistance, weather resistance, stain resistance, chemical product resistance, decoration and the like, and can obviously reduce or remit anticorrosive maintenance work and cost of the steel structure in late stage.

The present invention relates to surface processing material technology, and especially a kind of nanometer modified wear resistant and erosion resistant arc sprayed wire material. The wire material has coating of Fe or Ni, and powdered core comprising high carbon ferrochrome 45-60 wt%, Ni 10-20 wt%, ferrosilicon 4-10 wt%, ferroboron 5-10 wt%, Cr3C2, TiB2 or TiC 10-15 wt%, micron level TiB2 5-15 wt%, nanometer level Al2O3 5-15 wt%, and optional wollastonite 1-3 wt%, ZrO2 2-5 wt% and TiO2 5-15 wt%. The material is used mainly for coating the surface of blower blade, pipe wall in power station boiler, etc. and the coated layer can increase the surface life of the said parts.

A method of forming a porous nickel coating is provided. The method includes the steps of: depositing a coating onto a substrate by melting and atomizing two consumable electrode wires of a selected composition in a wire-arc spray device, so as to form a molten, atomized material, and directing the material to the substrate to form a coating deposit; the selected composition including nickel and a sacrificial metal; and then dissolving at least a portion of the sacrificial metal from the coating deposit by applying a positive potential in an alkaline electrolyte, so as to obtain a porous nickel coating. An electrolytic cell that includes a porous nickel coating is also described.

The invention discloses a marine-corrosion/hot-corrosion-resistant composite coating and a preparation method thereof, belonging to the technical field of metal surface protection. A novel FeCrAlRe hot-corrosion-resistant powder core wire material is prepared by coating mixed powder, containing Cr powder, Al powder and the like, on a carbon steel band. A ZnAlMgRe powder core wire material is prepared by coating mixed powder, containing Al, Mg, Zn and Re, on a Zn-base alloy band. The preparation method of the composite coating comprises the following steps: spraying the FeCrAlRe powder core wire material by using a high-speed arc spraying device to form an alloy coating on a pretreated steel base surface, and spraying a ZnAlMgRe coating to form a double-layer composite structure protective coating. The prepared coating can resist hot corrosion, and has excellent corrosion resistance in a marine high-humidity high-salt-mist environment.

The present invention provides a metallized substrate that has little warping and a fine, smooth surface. In the metallized substrate of the present invention, a conductive film is formed by spraying on the surface of a ceramic substrate or a composite substrate of a ceramic and a metal. The surface roughness of the conductive film formed by the spraying is preferably Ra≦1.0 μm. The surface of the conductive film may be a machined surface. The spraying is preferably arc spraying, plasma spraying, or flame spraying.

The invention discloses a fast manufacturing method for punching die of metal arc painting car covers. The invention mainly uses metal arc paint technology, combines with glass steel forming, epoxy forming, electrical brush plating. The method includes: paint mother die preparation, basic process, metal arc paint, back materials filling, electrical brush plaiting. The final die is grad layer structure, each layer has different mechanism performance, easy to display material speciality. The invention simplifies the craft and reduces the cost.

The invention provides a metal anticorrosion coating and an electric arc spraying process thereof. The metal anticorrosion coating comprises a priming zinc-aluminum alloy layer with a thickness of 100 mu m, a middle pure aluminum metal layer with a thickness of 80 to 100 mu m and a seal coat surface layer with a thickness of 70 to 90 mu m, wherein seal coat is a fluoro-carbon top coat. The priming zinc-aluminum alloy layer and the middle pure aluminum metal layer are sprayed by using secondary atomization electric arc spraying for metals, and the seal coat surface layer is coated through spraying. An adhesive force between the metal anticorrosion coating provided by the invention and the surface of a steel structure substrate is up to more than 15 to 16 MPa, and the metal anticorrosion coating can be used in the field of heavy duty anticorrosion of large-scale steel structures.

The invention relates to a high-hardness high-sulfur-corrosion-resistant electric arc spraying powder core wire which belongs to electric arc spraying powder cored wires which resist high-temperature oxidation and corrosion and used for the surface protection of metal materials. The high-hardness high-sulfur-corrosion-resistant electric arc spraying powder core wire belongs to the field of hot spraying in material processing engineering and is mainly used for the high-temperature corrosion, erosion and abrasion resistance of four tubes of a general coal-powder boiler of a coal-fired power station boiler, the corrosion prevention and the abrasion resistance of a converter smoke hood and a flue in a steel works and the repair of various axles, crankshafts, plunger pistons, paper-making drying cylinders, and the like. The high-hardness high-sulfur-corrosion-resistant electric arc spraying powder core wire is characterized by comprising the powder core components according to percentages by weight of 22-29 percent of crome metal, 5-9 percent of metallic molybdenum, 2.5-10 percent of metallic nickel, 4.0-6.5 percent of metallic aluminum, 0.5-1 percent of carbon, 1.0-3.0 percent of rare-earth, and metallic iron. A preparation method of the high-hardness high-sulfur-corrosion-resistant electric arc spraying powder core wire adopts the prior processes of firstly rolling a low-carbon cold-rolled strip into a U shape, adding powder core powders which account for 30-40 percent of the gross weight of spraying wires into the U-shaped groove, closing the U-shaped groove and wrapping the powder cores in the U-shaped groove, drawing gradually and lightening through a wire-drawing die to lead the diameter to reach 3.0mm.

The invention belongs to the technical field of plasma arc spraying, and particularly relates to a high-hardness, high-wear-resistance and high-toughness aluminum oxide ceramic coating and a preparation method thereof. The method comprises the following steps that (1.1) a matrix is selected; (1.2) sand blasting or sanding pretreatment is carried out on the matrix; (1.3) aluminum oxide raw materialpowder is prepared; (1.4) the aluminum oxide nano-sintered powder is heated to a molten state; and (1.5) an aluminum oxide nano-liquid material is sprayed. The core step of the method is the molten step which before the aluminum oxide nano-liquid material is sprayed, a traditional aluminum oxide spraying technology is characterized in that aluminum oxide nano particles are directly placed into aspray gun for heating and spraying, and the combination effect cannot sufficiently meet a strength requirement and an adhesion degree requirement; and the sintered powder is melted into the molten state before feeding by the spray gun through the method, so that the defect is avoided, and the comprehensive parameters of the strength, hardness, toughness and the like of the ceramic coating are obviously better than the effect of a common spraying technology.

The invention provides a process method for preparing an aluminide penetrating layer on the surface of pure copper or a copper alloy by combining the thermal spraying technology and the thermal treatment technology, which comprises the following steps: firstly, spraying a layer of pure aluminium coating on the surface of a copper product through arc; secondly, performing shot blasting and sealingagent coating treatment on the surface of the coating; and finally, performing thermal treatment at a temperature of between 800 and 900 DEG C, maintaining the temperature for 2 to 4 hours, and obtaining an aluminide layer over 3mm on the surface of the pure copper. The aluminide layer prepared by the method has good combination with a copper substrate, good antioxidant performance and good wear resistance. The method can prepare the aluminide penetrating layer, and also can prepare aluminium-molybdenum, aluminium-silicone, aluminium-chromium binary or multi-metallic diffusion layers.

The invention discloses a painting device for an automobile axle with drying and polishing functions. The painting device for the automobile axle with the drying and polishing functions comprises a base, a support plate is fixedly arranged on the top of the base through a support, a fixed seat is fixedly arranged on the right side of the top of the support plate, and a three-claw chuck is rotatably connected to the top of the fixed seat. A sliding rail is fixedly arranged on the top of the support plate, a sliding seat is slidably connected above the sliding rail, a material receiving box is fixedly arranged on the right side of the top of the sliding seat, and a spray pipe is fixedly connected to the bottom wall of the material receiving box. A paint bucket and a paint spraying pump are fixedly arranged at the top of the base, and the bottom end of the spray pipe passes through the bottom wall of the material receiving box and is connected with a discharging opening of the paint spraying pump through a discharging hose. A material returning hose is further connected to the bottom of the material receiving box, and the material returning hose passes through the side wall of the paint bucket to be connected into the paint bucket. According to the automobile axle with the drying and polishing functions, the paint spraying pump is connected to the arc spray pipe for painting, andthe painting effect is good; and the material receiving box is arranged to receive surplus paint, paint flows back into the paint bucket again for recycling through the material returning hose, and resources are saved.

The invention relates to a production process of colored flat acrylic fiber and a production line thereof, which are a production process and a production line thereof for producing the colored flat acrylic fiber in a plurality of color systems with vivid colors, little chromatic aberration and great flatness by adopting a cationic dye, in particular to a spinning production line for producing the colored flat acrylic fiber by adopting a ternary aqueous suspension polymerization and sodium sulfocyanate wet method. In the invention, a long-strip arc dye liquor spray head is used for dying, and the long-strip arc dye liquor spray head is an arc spray head which comprises a spray head seat, a spray head cover and a dye liquor inlet pipe and has a hollow T-shaped cross section, wherein the spray head is a long-strip semi-cylindrical surface, and a plurality of penetrative spraying holes are arranged on the spray head cover in a staggered way. The invention overcomes the defects of stripy and uneven dyeing, great chromatic aberration, large volume of colored wastewater, long product processing period, and the like commonly existing in a production process and a production line thereof for producing white flat acrylic fiber by adopting a traditional dyeing mode of steaming loose fibers at a high temperature.

The invention relates to surface protection of components used in petrochemical equipment. The feature of nickel base arc spraying powder core wire material that is made up from 56-74% metal nickel, 21-40% metal chrome, 5-9% molybdenum, 2-6% boron, and 2-4% aluminum. The invention solves the surface protection problem existing in petrochemical equipment under the condition of high temperature erosion, high temperature corrosion. Moreover, it solves the problem of salt solution ion drop corrosion on device and pipeline.

The invention provides surface passivation composite cementation layer treatment for a concrete bridge affiliate steel structural component and a co-cementation agent adopted therein. The co-cementation agent comprises the following components in parts by weight: 40-60 parts of zinc powder, 20-50 parts of aluminum powder, 10-40 parts of Zn-Al-Mg alloy powder and 0.05-2 parts of a rare earth catalyst. According to the method disclosed by the invention, a multicomponent alloy cementation layer is formed on the surface of the steel structural component by the co-cementation layer, and then the co-cemented steel structural component is welded according to a design drawing; electric arc spraying is adopted at a welding joint part, so that a multicomponent alloy layer is formed; and then a passivation agent is used for performing surface passivation sealing treatment on the welded component, so that the novel passivation composite cementation layer (PCA) is formed (steel plate multicomponentalloy co-cementation plus welding joint part electric arc spraying plus passivation treatment with the heavy-metal-element-free passivation agent). The concrete bridge affiliate steel structural component which is obtained through treatment in the invention has good corrosion-resistance and prominent wear-resistance, so that safety and quality are ensured.

A method for using 3D CAD data to directly drive the dedicated robot used to metal arc spray on the punch die of the covering part for car includes such steps as generating the 3D CAD data of said punch die, hierarchica process of data model, slicing layer by layer, coordinate transform between the coordinate systems of computer and die-making equipment, and movement, control.

A piston for an internal combustion engine is provided. The piston includes a thermal barrier coating applied to a crown formed of steel. According to one embodiment, a bond layer of a metal is applied to a combustion surface of the crown, followed by a mixed layer of metal and ceramic with a gradient structure, and then optionally a top layer of metal. The thermal barrier coating can also include a ceramic layer between the mixed layer and top layer, or as the outermost layer. The ceramic includes at least one of ceria, ceria stabilized zirconia, yttria, yttria stabilized zirconia, calcia stabilized zirconia, magnesia stabilized zirconia, and zirconia stabilized by another oxide. The thermal barrier coating is applied by thermal spray, HVOF, or wire arc spraying. The thermal barrier coating preferably has a thickness less than 200 microns and a surface roughness Ra of not greater than 3 microns.

The invention relates to an arc spraying device of shaft parts, comprising a spray gun; the spray gun is fixed on a stretching mechanism of the spray gun; the stretching mechanism of the spray gun is installed on a longitudinal moving mechanism; the longitudinal moving mechanism is fixed on a longitudinal side of a spraying tool through a connecting frame; the spraying tool is clamped and the shaft parts are driven to rotate. In the invention, the spraying gun is fixed on the stretching mechanism of the spraying gun and the stretching mechanism of the spraying gun is installed on the longitudinal moving mechanism. Through clamping the spraying tool and driving the shaft parts to rotate, the purposes of automatic spraying of the shaft parts, reduction of labor strength for operators, high production efficiency, uniform spraying thickness and good spraying quality can be achieved.