摘要:
A thermal spraying apparatus that is capable of effectively preventing the adhesion of spray fumes to unsprayed regions of a bore surface during arc spraying is provided. To this end, a thermal spraying apparatus 10 comprises a spray gun 6 that moves within a cylinder bore. The spray gun 6 has at one end thereof a first discharge opening (atomizing nozzle 62) that faces a direction that is orthogonal to the movement direction, has a second discharge opening (auxiliary nozzle 63) that faces a direction that is orthogonal to the nozzle 62, and has, at a predetermined region located further to the side in the movement direction of the spray gun 6 than the nozzle 62, third discharge openings (fume adhesion prevention nozzles 65) for discharging a fluid and that faces the same direction as the nozzle 62. A droplet, which forms as an arc spray wire material melts at the tip of the spray gun 6, is stretched with auxiliary air A1. By blowing atomizing air A2 onto the droplet, spray particles are formed and sprayed onto the bore surface. At the same time, fume adhesion prevention air A3 is blown towards the cylinder bore surface in synchrony with the spraying of the spray particles.
摘要:
An arrangement (40) and process for coating a vehicle component (30) with a solid lubricant including a thermal spray device (10) having a spray direction along a spray line (S) corresponding to a central axis of a spray plume (16); a solid lubricant injection device (20) having an injection direction along an injection line (L) corresponding to a central axis of an injection plume (24); and a vehicle component (30) to be coated, having a surface (31) arranged at a distance (d) from an outlet orifice (13) of the thermal spray device (10) along the spray line (S). The solid lubricant injection device (20) is positioned such that the injection line (L) intersects the spray line (S) at an intersection point (P), which is intermediate the outlet orifice (13) of the thermal spray device (10) and the surface (31) of the component (30) to be coated. Also a process for thermal spray coating a vehicle component (30) with a solid lubricant coating and a vehicle, with such a coated component.
摘要:
A prosthetic heart valve includes a base and a plurality of polymeric leaflets. Each leaflet has a root portion coupled to the base, and each leaflet has an edge portion substantially opposite the root portion and movable relative to the root portion to coapt with a respective edge portion of at least one of the other leaflets of the plurality of leaflets. Each leaflet includes) at least two polymers along at least one portion of the leaflet, and each leaflet has a composition gradient of each of the at least two polymers along at least one portion of the leaflet.
摘要:
Vorgeschlagen wird ein Verfahren zur Überdeckung von Innenwandungen eines Hohlraums (12) mit einer Schutzschicht (50) aus Korrosionsschutzwachs, insbesondere zur Verwendung an Fahrzeugkarosserien (10) sowie Anbauteilen für Fahrzeugkarosserien. Dabei wird Korrosionsschutzwachs mittels eines Nebelerzeugers (30) in vernebelte Form (Schutzwachsnebel (40)) gebracht und durch eine Austrittsöffnung (32) dem zu konservierenden Hohlraum (12) zugeführt. Der Schutzwachsnebel (40) schlägt sich an Innenwandungen des Hohlraums (12) nieder und bildet hier eine Korrosionsschutzwachsschicht (50).
摘要:
A nozzle assembly comprises a hollow nozzle body having a central bore and a plurality of ports extending through the body from the central bore; and a switching valve cartridge disposed in the central bore that directs fluid flow to ports upon application of fluid flow above a predetermined threshold to the inlet and direct fluid flow to different ports upon fluid flow having subsequently dropped below the predetermined threshold and then exceeding the predetermined threshold. The cartridge comprises a cylindrical cartridge case having a front portion and a cup shaped rear portion, a cylindrical poppet slidably disposed within the cup shaped rear portion of the cartridge case, and a biasing member within the cartridge case between the front portion of the case and the poppet urging the poppet away from the front portion of the cartridge case.
摘要:
Die Erfindung betrifft eine Anordnung zum Aufbringen von Wachs auf Karosseriebauteile eines Fahrzeugs, umfassend eine Wachsausbringungslanze (11), eine Wachsfördereinrichtung (12), die zur Förderung von Wachs durch die Wachsausbringungslanze (11) ausgebildet ist und eine Unterbrechungseinrichtung (13) zwischen Wachsfördereinrichtung (12) und Wachsausbringungslanze (11), um den Wachsaustrag innerhalb eines Applikationsvorgangs für vorbestimmte Zeitintervalle unterbrechen zu können, wobei die Unterbrechungseinrichtung (13) einen in einer Bohrung (14) gelagerten Umschaltkolben (15) umfasst und der Umschaltkolben (15) in einer Freigabeposition eine Fluidverbindung zwischen Wachsfördereinrichtung (12) und Wachsausbringungslanze (11) schafft und in einer Sperrposition eine Bypassleitung (16) eröffnet wird, die das auszubringende Wachs in einem Kreislauf über die Wachsfördereinrichtung (12) führt.