Various embodiments include a cold gas spraying system for generating an adjustable particle jet. The system may include: a nozzle from which the particle jet emerges; a supply device for supplying a particle stream to the nozzle; and one or more actuators operable to reduce the particle stream and/or the particle jet during operation. At least one of the actuators comprises a valve arranged between the supply device and the nozzle.

A device for metering one or more powder(s) (A, B) to produce a flow (23) of powder(s) and of a carrier gas at a given volume flow rate, comprises: ⋅at least a first source (25) suitable for supplying a first flow (27) comprising a first powder (A) and a first carrier gas (G1) substantially at the given volume flow rate, ⋅a source (33) of a carrier gas suitable for supplying an adjustment carrier gas flow (35) substantially at the given volume flow rate, ⋅an outlet junction (49) for emitting said flow of powder(s) and of carrier gas, ⋅a first proportional valve (59), ⋅an adjustment proportional valve (75), and ⋅a control system (21) suitable for controlling at least the first proportional valve and the adjustment proportional valve so that the flow of powder(s) and of carrier gas has a volume flow rate substantially equal to the given volume flow rate.

A recirculating powder applicator includes an applicator body having an inlet on an upstream surface and an outlet on a downstream surface, wherein the inlet and outlet define a passage that extends transversely through the thickness of the applicator body, a powder conduit, an air inlet, an exhaust aperture located on one of the upstream or downstream surfaces, and a circulation chamber located on the interior of the applicator body. The powder conduit and air inlet are in fluid communication with the passage and the passage is in fluid communication with the circulation chamber. A method of applying powder to a substrate during a continuous process includes using a recirculating powder applicator.

A processing device for a metal material, containing: an airtight container for housing a specimen thereinside; an oxygen pump for extracting oxygen molecules from a gas discharged from the airtight container; a circulation means for returning the gas into the airtight container; and a plasma generation means present inside the airtight container for converting the gas returned from the circulation means into plasma and exposing the specimen thereto.

A thermal sprayer system includes an injector conduit in communication with an injector and a first valve for selectively directing a coating fluid through the injector conduit. A flush fluid conduit is in communication with the injector conduit for directing a flush fluid through the injector conduit. A pressurized air conduit is in communication with the injector conduit for directing a pressurized fluid through the injector conduit.

The present disclosure teaches systems and methods for coating and cooking goods. One system for coating of goods can comprise a source of powder for coating the goods, a source of gas to create a gas stream to carry the powder and the goods in a combined stream through a tunnel or chamber comprising air bearings to keep the goods and the powder from contacting the inner surface of the tunnel or chamber, and a system for recirculating unused powder for reuse. One method for coating goods can comprise combining additive powder with at least one gas stream in a powder circulation chamber and forming a powder gas stream, forming an air bearing on an inner surface of the powder distribution tunnel wherein the powder distribution tunnel comprises an inner tube and outer tube can be separated by a plenum, wherein the air bearing is formed by directing a gas stream through the at least one compressed air inlet causing the tunnel gas stream to form a circular vortex ring having a centrifugal force equal to a pressure gradient outward and releasing goods into the powder distribution tunnel to coat the goods.

A base for a powder coating booth, including a base structure, through which the booth is intended to rest on a floor, the base structure being configured to support a powder coating compartment of the booth. The base also includes a floor, which is supported by the base structure and which is configured to delimit the bottom of the powder coating compartment. To reduce the accumulation of residual powder, the floor includes at least one oblique panel, which is inclined with respect to the horizontal and which is configured to delimit the bottom of the powder coating compartment of the booth, whereas the at least one oblique panel is porous so as to be permeable to the air and impermeable to the residual powder resulting from powder coating an article within the powder coating compartment.

A conveying device is provided for the conveying of coating powder and includes a powder reservoir container that includes, on the bottom, a powder outlet channel. The powder outlet channel is connected to a first powder conveyor for conveying powder out of the powder reservoir container back to a powder storage container. Moreover, a second powder conveyor is provided for conveying powder out of the powder reservoir container to a powder applicator.

A recirculating powder applicator includes an applicator body having an inlet on an upstream surface and an outlet on a downstream surface, wherein the inlet and outlet define a passage that extends transversely through the thickness of the applicator body, a powder conduit, an air inlet, an exhaust aperture located on one of the upstream or downstream surfaces, and a circulation chamber located on the interior of the applicator body. The powder conduit and air inlet are in fluid communication with the passage and the passage is in fluid communication with the circulation chamber. A method of applying powder to a substrate during a continuous process includes using a recirculating powder applicator.

The present disclosure teaches systems and methods for coating and cooking goods. One system for coating of goods can comprise a source of powder for coating the goods, a source of gas to create a gas stream to carry the powder and the goods in a combined stream through a tunnel or chamber comprising air bearings to keep the goods and the powder from contacting the inner surface of the tunnel or chamber, and a system for recirculating unused powder for reuse. One method for coating goods can comprise combining additive powder with at least one gas stream in a powder circulation chamber and forming a powder gas stream, forming an air bearing on an inner surface of the powder distribution tunnel wherein the powder distribution tunnel comprises an inner tube and outer tube can be separated by a plenum, wherein the air bearing is formed by directing a gas stream through the at least one compressed air inlet causing the tunnel gas stream to form a circular vortex ring having a centrifugal force equal to a pressure gradient outward and releasing goods into the powder distribution tunnel to coat the goods.