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US 2004/0166247 A1Published application
Method and system for cold gas spraying
AssigneeLinde Aktiengesellschaft
InventorsPeter Heinrich, Thorsten Stoltenhoff, Peter Richter, Heinrich Kreye, Horst Richter
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Abstract
A cold gas spraying method and device, whereby the sprayed particles are accelerated in a gas flow. A powder tube and an outer nozzle body together form a Laval nozzle that produces high gas flow velocities. The injection of the sprayed particles occurs in the divergent section of the Laval nozzle.
Claims17
A cold gas spraying method of producing a coating or a structural part, comprising:
- expanding a gas jet using a Laval nozzle;
- injecting powdery spraying particles into the gas jet;
- and
- accelerating the spraying particles to a speed of up to 2000 m/s;
- wherein
- the spraying particles are injected into the gas jet axially and centrically, and at a location in the gas jet that is downstream in the spraying direction from a nozzle neck of the Laval nozzle.
3 more elements
A cold gas spraying system having a Laval nozzle comprising an outer nozzle body and a powder tube capable of feeding spraying particles into the outer nozzle body,
- wherein the powder tube ends in a divergent section of the Laval nozzle and is aligned axially and centrically with the outer nozzle body.
Dependencies are inferred from the claim text.