Hollow laser inside-beam powder feeding composite electrodeposition machining method and device

Abstract

The invention discloses a hollow laser inside-beam powder feeding composite electrodeposition machining method and device, relates to electrochemical deposition machining of composite materials, and belongs to the field of non-traditional machining in a manufacturing technology. According to the device, a hollow anode tube is perpendicularly placed in hollow laser, particles are sprayed out from an anode, are scattered in a laser focal region and then drop in a solution, the laser illuminates the solution to generate high-temperature and high-pressure plasma, in an outward expansion process of the plasma, the particles are dispersed by a generated jet impact force, and the particles can uniformly reach the surface of a cathode and then are captured by the cathode, so that the particles easily enter a coating to form a nano-particle composite coating. By the impact effect of the laser, the agglomeration probability of the particles in the traditional composite electrodeposition process is reduced, the compound quantity of the particles is increased, and the quality of a deposition layer can be improved remarkably. Meanwhile, electrochemical reaction rate can be increased by heat effect of the laser, and therefore, the deposition speed is increased.

Description

technical field [0001] The invention relates to the field of special electrodeposition in manufacturing technology, in particular to a method and device for composite electrodeposition by hollow laser light internal powder feeding, which is suitable for processing high-performance composite coatings. Background technique [0002] Composite electrodeposition is based on the theory of electrocrystallization and dispersion strengthening, and one or several kinds of insoluble solid particles, inert particles and metal ions are co-deposited by electrochemical methods to form a composite coating. Compared with single-phase coatings, composite coatings have better wear resistance, corrosion resistance, self-lubricating properties, etc., and have received extensive attention in the development of material science today. [0003] In the preliminary preparation of composite deposition, the particles need to be uniformly dispersed in the deposition solution. Therefore, before tradition...

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Problems solved by technology

The disadvantage is that on the one hand, when the composite deposition process is to be performed, due to the blocking, reflection, absorption, etc. of the laser by the particles, the laser is not easy to irradiate the surface of the cathode substrate.

On the other hand, the color of the solution also has a great influence on the heat absorption coefficient of light, so when the solution has a low heat absorption coefficient, the thermal effect of the laser is greatly reduced

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