A nozzle apparatus may comprise a nozzle body having a nozzle tip with a discharge port for spraying a treatment fluid onto a substrate; a nozzle moving member for moving the nozzle body relative to the substrate; a rotating member for rotating the nozzle body or the nozzle tip so that a treatment fluid is sprayed onto the substrate during rotation; and a control unit configured to control an operation of the nozzle moving member and the rotating member.

The method for flame coating tubular elements provides for arranging a said tubular element (2) to be coated at a coating station, providing an applicator unit (3), operating in the coating station, in an inactive configuration, spaced from the tubular element (2), the applicator unit (3) carrying at least one thermoplastic powders flame applicator device (4) and being alternatively operable between the inactive configuration and an active configuration, approached radially to the tubular element (2). After having brought the applicator unit (3) towards the tubular element (2), the method provides for operating the same unit (3) in the active configuration, so as to peripherally engage the element (2) itself. The applicator device (4) is turned on, the thermoplastic powders are fed and the applicator device (4) is operated in motion around and/or along the tubular element (2) so as to flame coating it with a controlled flow of thermoplastic powders.

A machine and a process for spraying a section of pipeline with air and water. The machine comprises an enclosure configured to surround a section of pipeline; a frame rotatable about a section of pipeline in the enclosure; rotating means operable to rotate the frame; a water delivery arrangement mounted on the frame and rotatable therewith to spray water around a section of pipeline in the enclosure; and an air delivery arrangement mounted on the frame and rotatable therewith to spray air around a section of pipeline in the enclosure. The machine may be used quenching or jet washing a section of pipeline. Optionally, the machine may comprise a heater arrangement mounted on the frame and rotatable therewith to help dry a section of pipeline after it has been jet washed.

Plasma spray apparatus for coating substrates, including at least a working chamber including a plasma torch and at least a substrate support, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to the normal pressure, and at least a gas circuit, in communication with said working chamber, including recirculating means of the inert gases contained in said working chamber. The recirculating means include a closed loop, including a blower and a first heat exchanger communicating with said working chamber for extracting the inert gases and supplying a first fraction of the cooled inert gases back into a first portion of the working chamber, and at least a path, communicating with said closed loop and including a compressor and a second heat exchanger for supplying a second fraction of the cooled inert gases into a second portion of the working chamber.

A holding mechanism holds a substrate horizontally. A rotation mechanism rotates the holding mechanism holding the substrate. A nozzle supplies a processing liquid to the substrate. A nozzle arm holds the nozzle. An arm actuation mechanism moves the nozzle arm between a processing position overlapping the substrate in plan view and a retracted position displaced from the substrate in plan view. A cup portion is disposed around the holding mechanism, and receives the processing liquid from the substrate. A cup actuation mechanism moves the cup portion up and down between an upper position and a lower position. A first container is fixed to the cup portion to be movable up and down integrally with the cup portion, and can accommodate the nozzle at the retracted position.

Plasma spray apparatus for coating substrates, including at least a working chamber including a plasma torch and at least a substrate support, in which an inert gas or a mixture of inert gases is contained at a pressure which is close to the normal pressure, and at least a gas circuit, in communication with said working chamber, including recirculating means of the inert gases contained in said working chamber. The recirculating means include a closed loop, including a blower and a first heat exchanger communicating with said working chamber for extracting the inert gases and supplying a first fraction of the cooled inert gases back into a first portion of the working chamber, and at least a path, communicating with said closed loop and including a compressor and a second heat exchanger for supplying a second fraction of the cooled inert gases into a second portion of the working chamber.

The present invention discloses a method and an apparatus for spray painting an annular object. The annular object to be spray painted is placed and positioned on a loading tray disposed on a machine station and transported by a transporting mechanism along a spray painting path of the machine station. A self-rotation mechanism is turned on to automatically rotate the loading tray and the annular object to be spray painted. An air gun and a spray gun are turned on to remove dust on a disk surface of the annular object and spray paint the disk surface of the annular object to form a protection layer thereon.

A process for producing a preform by cold spray deposition, the process comprising: providing a starter substrate about a preform axis of rotation, the starter substrate having at least one axial end having a substantially flat deposition surface; rotating the starter substrate about the preform axis of rotation; depositing material onto the deposition surface of the starter substrate using cold spray deposition to form a product deposition surface, the cold spray deposition process including a cold spray applicator through which the material is sprayed onto the deposition surface; successively depositing material onto a respective top product deposition surface using cold spray deposition to form successive deposition layers of the material; and moving at least one of: the cold spray applicator; or the starter substrate and preform product, relative to the other in an axial direction along the preform axis of rotation to maintain a constant distance between the cold spray applicator and the top product deposition surface, thereby forming a preform product of a selected length, wherein the cold spray applicator is moved in a plane perpendicular to the preform axis of rotation so as to deposit material as a substantially flat surface on each respective deposition surface of the starter substrate or product deposition surface of the preform product.

The invention relates to a coating device and to a method for metal-coating of workpieces, comprising a housing, which surrounds a working space, a retaining apparatus for retaining at least one workpiece in the working space, at least one deposition apparatus comprising a deposition nozzle for applying a metal powder to a workpiece surface to be coated, and a laser for locally melting the metal powder on the workpiece surface to form a coating, at least one movement apparatus, by means of which the at least one deposition apparatus can be moved relative to the workpiece surface during the coating, at least one air supply and at least one air discharge. According to the invention, it is provided that the air supply is arranged in an upper region of the working space above the workpiece and the air discharge is arranged in a lower region of the working space below the workpiece. In addition, a additional suction apparatus is provided with at least one suction opening, which is arranged close to the workpiece.

The invention relates to a method and to a system for metal-coating at least one surface of a workpiece, in which before coating, a surface structure with peaks and troughs in the surface to be coated is detected by means of a measuring apparatus, the coating is carried out by means of at least one deposition apparatus, which is moved relative to the surface and applies coating material in the process, and the deposition apparatus is controlled by a control apparatus on the basis of the detected surface structure, wherein more material is applied in the region of troughs and less material is applied in the region of peaks.