Adjustable cold spray nozzle

A cold spray nozzle assembly comprising:

• a venturi including converging and diverging portions interconnected at a throat;
• an air supply conduit in communication with the venturi configured to supply a carrier gas to the converging portion;
• a powder feeder in communication with the venturi configured to supply a powdered material to the venturi;
• an adjustment member arranged within the venturi and axially movable relative thereto between multiple positions including a desired position, the multiple positions respectively providing multiple different areas including a desired area between the adjustment member and the venturi, desired position providing the desired area;
• a retention member maintaining the adjustment member in the desired position;
• wherein the powder feeder includes multiple circumferentially arranged passages located providing injection openings for introducing the powdered material to the venturi, the passages radially offset from a longitudinal axis of the venturi;
• and
• wherein the adjustment member includes the powder feeder, the adjustment member providing a passage for supplying the powdered material.

A cold spray nozzle assembly comprising:

• a venturi including converging and diverging portions interconnected at a throat;
• an air supply conduit in communication with the venturi configured to supply a carrier gas to the converging portion;
• a powder feeder in communication with the venturi configured to supply a powdered material to the venturi;
• an adjustment member arranged within the venturi and axially movable relative thereto between multiple positions including a desired position, the multiple positions respectively providing multiple different areas including a desired area between the adjustment member and the venturi, desired position providing the desired area;
• a retention member maintaining the adjustment member in the desired position;
• and
• an orifice body receiving a nozzle tube removably secured to one another, the nozzle tube providing the diverging portion.

A cold spray nozzle assembly comprising:

• a venturi including converging and diverging portions interconnected at a throat;
• an air supply conduit in communication with the venturi configured to supply a carrier gas to the converging portion;
• a powder feeder in communication with the venturi configured to supply a powdered material to the venturi;
• an adjustment member arranged within the venturi and axially movable relative thereto between multiple positions including a desired position, the multiple positions respectively providing multiple different areas including a desired area between the adjustment member and the venturi, desired position providing the desired area;
• a retention member maintaining the adjustment member in the desired position;
• and
• wherein the adjustment member is threadingly received in the gas adapter and moveable relative thereto to the desired position, and the retention member is a nut locking the adjustment member relative to the gas adapter in the desired position.

A method of providing a cold spray nozzle assembly for use comprising the steps of:

• a) providing a venturi in communication with an air supply conduit and a powder feed tube;
• b) screwing an adjustment member within the venturi between multiple positions including a desired position, the multiple positions respectively providing at least one of multiple different areas and throat clearances including at least one of a desired area and a desired throat clearance between the adjustment member and the venturi;
• and
• c) securing the adjustment member in the desired position to maintain the desired area.