Real-time monitoring device and method for cold spraying coating and interface defects of cold spraying coating

Abstract

The invention discloses a real-time monitoring device and method for cold spraying coating and interface defects thereof, and belongs to the field of electromagnetic nondestructive testing technology and surface engineering. The real-time monitoring device mainly comprises a signal generation module, a magnetic field excitation module, a motion control module, a data acquisition module and a device fixing module. The signal generation module comprises a signal generator and a power amplifier; the magnetic field excitation module comprises a U-shaped magnet yoke, a magnet exciting coil and a signal receiver; the motion control module is mainly composed of a mechanical arm. The data acquisition module comprises a voltage amplifier, a data acquisition card and an upper computer; the device fixing module comprises a support, a base and a clamp. The magnetic field excitation module and the cold spraying device synchronously move in the monitoring process, real-time monitoring on defects of a base body and a coating of a ferromagnetic material in the cold spraying process is achieved, and the unforeseen circumstances of strength failure, coating stripping and the like of a remanufactured part are avoided.

Description

Technical field [0001] The present invention belongs to the field of electromagnetic nondestructive testing technology and surface engineering, in particular to a cold spray coating and a real-time monitoring device and method for interfacial defects thereof. Background [0002] Remanufacturing engineering technology is the use of surface engineering technology in the end of the parts failure position to generate a strengthened coating layer, restore the size of the failed parts and improve its performance, metal parts remanufacturing has now become one of the core contents of the country's vigorous development of strategic emerging industries. As a new surface coating preparation technology, cold spraying technology is repaired and strengthened on the surface of waste parts by spray forming. Compared with traditional thermal spraying technology, cold spraying technology has the advantages of high spraying rate, high deposition efficiency, small impact on matrix and high coating ...

AI Technical Summary

Problems solved by technology

[0003] However, the particularity of remanufacturing objects determines that there are still uncertainties in cold spray technology

The service conditions, damage levels and failure modes of remanufactured products are random and individual, which makes the environmental conditions of cold spray coating very complicated

At the same time, the mechanical bond between the cold spray coating and the substrate is also unstable, and the remanufactured parts may experience strength failure, coating peeling, etc., which will cause great losses and pose a threat to life and property safety.

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