The book discusses the results of research on the restoration and strengthening of machine parts by electrodeposition of iron, carried out by the author at the Department of Metal Technology of the Tajik Agricultural Institute and Auto Repair Plant No. 1 of the mountains. Dushanbe from 1960 to 1975. Methods of determination of general defectiveness of iron sediments structure, value of residual stresses and their connection with basic service properties are described.