A FEATURES OF THE IMPLEMENTATION OF CADMIUM-BASED ELECTROPLATING COATINGS

Abstract

The rapid economic, scientific and technical development of the Republic of Kazakhstan in order to achieve the modern level of technological development requires a wide production of metal products and equipment, using technically and economically effective methods. For this purpose, one of the main ways of producing corrosion-resistant and efficient metal products and parts is cadmium plating. Cadmium plating is flexible, easily amenable to rolling, stamping, bending. Freshly prepared sheathing is better welded on acid-free fluxes than zinc. Goals and objectives. A study of the technology of cadmium tape, made of stainless steel, grade 2X18Н10T. A comparative analysis of the types and composition of cadmium electrolytes has been carried out. The factors affecting the quality of the resulting packaging are investigated, the calculation of the observed main indicators of products after electrolysis has been carried out. Results. Before coating the surface of metal products, geometric calculations of the surface of the coated products have been carried out, and their results have been processed to correctly select the density and current strength for a given operating mode. It has been established that the quality of the coating undergoes changes depending on the composition of the electrolyte, its temperature and current density. The surfactant has contributed to the production of a durable packaging layer with the possibility of increasing potency during use, including the work with such surfactants as dextrin, gelatin, carpentry glue. Conclusion. It has been shown that the cadmiumcoated tape has no gloss unless a surfactant is used. It has been found that when the current is overvoltaged, the tape is covered with fine-grained granules and darkens. When the tape has been cadmated, the cadmium layer has deposited on the surface of the tape increasing with a time increase.