Use of Modern Resource-Saving Methods in Parts' Manufacturing and Repairing on the Example of Electric Spark Alloying (ESA)

The work is devoted to a universal resource-saving method of parts processing - electric spark alloying (ESA). It is used both in manufacturing and repairing. This method allows you to apply reinforced and restored coatings to various objects (parts, tools, and tooling) regardless of their shapes and sizes. Purpose of reseach is to show high universality and efficiency of ESA method on the examples of its practical application for problem solving of machine-building production and repair. Methods . The work is analytical and carried out taking into account authors' practical experience. Results . Some information about ESA method, coating forming mechanism, their thickness and properties is given. Implementing strengthening technologies wear resistance is increased by 2-5 times and more by coatings of increased hardness using electrodes from metal-ceramic hard alloys based on carbides of TiC, WC and other hard compounds. The expediency of recovery technologies is shown: wear of most parts (about 85%) of various techniques does not exceed 200 um and their recovery cost is usually no more than 25-30% of a new part cost; recovered parts resource is commensurate or exceeds new parts resource. Adjusting and restoring technologies are described using specific examples. Conclusion. Given examples of practical application of ESA method confirm high universality and efficiency of this method for solving machine-building and repair production problems. Obtained results can be used in method selecting for strengthening or reducing of various objects from metals and alloys (parts of machines, tools, technological equipment) taking into account ESA advantages.