Method for Stabilizing the Operation of the Electrode-Tool During Electric Spark Alloying of Metal Surfaces

Purpose of research. Expansion of technological possibilities of using the method of electrospark alloying due to the systematization and optimization of changes in the controlled electrical parameters of the process current.

Methods. To expand the technological capabilities in the formation of the executive surfaces of machine parts, a method for stabilizing the work of the electrode-tool during their electric spark alloying is proposed. The stability of the vibrating electrode-tool in the process of electric spark alloying is carried out by automatically monitoring the interelectrode gap by changing the frequency of the process current pulses. Process current impulses are formed as a result of the integrated action of two components. The first one is set directly due to mechanical vibrations of the electromagnetic vibrating electrode-tool and synchronizes the operation of the installation as a whole. The second one is formed due to the spacing in time of the synchronized control signals of the sequential discharge of all charged capacitive storages according to the algorithm - the discharge of the next one after the discharge of the previous one.

Results. It has been experimentally established that when using this method, it becomes possible to improve the quality of deposition of functional coatings by systematizing the choice of technological parameters of the process control. To implement the method, it is proposed to develop an original scheme and layout of the installation, which ensures the establishment of the influence of the operation of the components of its nodes (technological current) on the composition, structure, properties of the applied coatings.

Conclusion. Based on the experimental studies carried out, one of the ways to improve the functional properties of the executive surfaces of machine parts and mechanisms by changing the technology of using the electric spark doping method by improving the process equipment, namely, the electrical parameters of the process current pulse generator, is proposed.

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