Cold air powered spraying method and device
Patent Information
- Authority / Receiving Office
- CN · China
- Patent Type
- Applications(China)
- Current Assignee / Owner
- BAOSHAN IRON & STEEL CO LTD
- Publication Date
- 2007-01-03
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Abstract
Description
(1) Technical field
[0001] The invention relates to a method and a device for preparing a coating, in particular to a method and a device for preparing a coating by spraying a metal powder material on the surface of a sample or a workpiece by using a cold air power spraying method. (2) Background technology
[0002] Conventional means of preparing coatings is by employing various thermal spraying methods including: flame spraying, arc spraying, plasma spraying, high velocity oxy-fuel spraying (HVOF). At the end of the last century, a new type of coating preparation method based on aerodynamic principles - cold air dynamic spraying (referred to as cold spraying or dynamic spraying) emerged. In cold air power spraying, the powder particles to be sprayed are driven and accelerated to high velocities by some kind of "cold" air injection device without melting. The powder particles with high kinetic energy hit the surface of the sample or workpiece to be sprayed to form a firm a...