The use of additive technologies for the restoration and strengthening of parts of transport means

Abstract

The article is devoted to the comprehensive development and implementation of multifunctional coatings obtained through the use of additive technologies, based on scientific research in the field of restoration and strengthening of worn parts to increase the resource of transport means and their elements, aimed at reducing the material and technical resource and reducing the supply of spare parts. When choosing a method of gas thermal spraying, the main conditions for the formation of high-quality coatings are established, and it is proved that the method of electric arc spraying best meets these conditions. The conducted assessment showed that to restore and strengthen the surfaces of parts of ship's technical equipment, it is expedient to replace expensive powder-coated wires made of highly alloyed alloys with cheaper and more affordable steel wires of a solid cross-section made of iron-carbon alloys. The obtained research results of coatings applied by the electric arc method showed the prospects and feasibility of their processing by pulsed ion nitriding. As a result of the conducted research, for the first time, a method of increasing wear resistance was proposed and developed, which provides an increased level of physical and mechanical properties of restored surfaces and a comprehensive solution to the problems of ensuring the characteristics of strength and operational properties of restored surfaces and developing a technological process of restoring parts of ship's technical equipment.