Abstract:
A method of applying a corrosion-resistant coating to a fastener that includes preheating an area of the fastener to be coated to elevate a temperature of the area and spraying the preheated area of the fastener with a molten or semi-molten metal. In one embodiment, a corrosion-resistant coating applicator includes a support structure, a rotatable slotted fastener conveyer supported by the support structure, a feeder configured to feed fasteners to the rotatable slotted fastener conveyer, a fastener aligner configured to make head portions of the fasteners aligned with each other, a heater configured to heat head portions of the fasteners as the fasteners are being conveyed by the slotted fastener conveyer, and a sprayer configured to apply a corrosion-resistant coating to the heated head portions of the fasteners being conveyed by the slotted fastener conveyer. The present disclosure also provides corrosion-resistant coated fasteners made using the coating methods and/or coating apparatus.
Abstract:
An additive manufacturing system includes an additive manufacturing tool configured to receive a plurality of metallic anchoring materials and to supply a plurality of droplets to a part, and a controller configured to independently control the composition, formation, and application of each droplet to the plurality of droplets to the part. The plurality of droplets is configured to build up the part. Each droplet of the plurality of droplets includes at least one metallic anchoring material of the plurality of metallic anchoring materials.
Abstract:
A system (100), apparatus (110), and method (900) for monitored thermal spraying. One or more sensors (610) are used to capture one or more types of measurements (650) to monitor the thermal spraying process. A processor (710) can analyze a waveform (750) of measurements (650), such as electrical measurements (652). The processor (710) can then initiate a response (770) such as a warning (772) or an automatic adjustment (790) that is triggered by an identified operating condition (800).
Abstract:
The plasma spraying apparatus includes a cathode, a first gas nozzle defining a first gas path between the cathode and itself, a second gas nozzle defining a second gas path between the first gas nozzle and itself, and a third gas nozzle disposed between the first and second gas nozzles to define a third gas path between the first and second gas paths. A wire is disposed at a distal end thereof in front of a nozzle opening of the second gas nozzle. A first gas sprayed through the first gas nozzle is turned into plasma flame, which melts the wire into droplets, and the droplets are sprayed onto a target by a second gas sprayed through the second gas nozzle. The third gas absorbs heat from the plasma flame to thereby turn into a high-temperature gas flow externally of the plasma flame.
Abstract:
A method for producing an armor plating for protected vehicles is described. The method employs the following steps: supplying a substrate made of a metal and/or a nonmetal and coating the substrate with the aid of a thermal spraying process. A device for producing an armor plating is also described herein.
Abstract:
An atmospheric pressure pulsed arc plasma source and method of using including a housing having a housing opening therein; an insulator tube having an insulator tube opening therein, retained within the housing opening; and a conductive tube, retained within the insulator tube opening. A nozzle is retained by the housing. A feed path is defined in the conductive tube and the nozzle and a gas feed port is operatively coupled to the feed path. Feedstock is provided in the feed path and electrically coupled to the conductive tube. A pulsed DC power source provides a pulsed voltage to the conductive tube. The plasma source emits a discharge stream having a temperature that is less than 50° C. from the nozzle and a coating is formed on a substrate.
Abstract:
A device for the thermal coating of a surface, having a wire supply unit for the supply of a wire, wherein the wire acts as a first electrode, a source for plasma gas for generating a plasma gas stream, a nozzle body with a nozzle opening through which the plasma gas stream is conducted as a plasma gas jet to one wire end, and a second electrode which is arranged in the plasma gas stream before the latter enters into the nozzle opening The device is characterized in that the wire supply unit is adjustable, whereby the wire end situated in front of the nozzle opening can be moved by a certain adjustment travel. In this way, it is possible for installation tolerances in the device to be easily compensated, and high and consistent quality of the coating is attained.
Abstract:
A device for the thermal coating of a surface, having a wire supply unit for the supply of a wire, wherein the wire acts as a first electrode, a source for plasma gas for generating a plasma gas stream, a nozzle body with a nozzle opening through which the plasma gas stream is conducted as a plasma gas jet to one wire end, and a second electrode which is arranged in the plasma gas stream before the latter enters into the nozzle opening The device is characterized in that the wire supply unit is adjustable, whereby the wire end situated in front of the nozzle opening can be moved by a certain adjustment travel. In this way, it is possible for installation tolerances in the device to be easily compensated, and high and consistent quality of the coating is attained.
Abstract:
A method of thermally depositing metal onto a target surface using a plasma transferred wire arc thermal spray apparatus, wherein the method includes the steps of offsetting the central axis of a consumable wire with respect to an axial centerline of a constricting orifice; and establishing and operating a plasma transferred wire arc between a cathode and a free end of the consumable wire; and melting and atomizing a continually fed free end of the consumable wire into molten metal particles and projecting the particles onto said target surface.
Abstract:
A method for forming protective corrosive resistant coatings on equipment is disclosed. The coating is formed from a NiCrMo alloy composition containing at least two gettering components selected from Al, Si, and Ti in an amount of up to 25 wt. %. The coating in one embodiment is applied using a thermal spray technique, e.g., twin wire arc spray, forming coatings of 5-50 mils thickness having a fine-scale micro-pore structure which is effectively non-permeable in aggressive solutions, and resist selective oxidation in thermal spraying of components for maximized corrosion performance The coating is further characterized as having excellent adhesion strength even when applied with varying parameters as in manual on-site coating applications.