Study of the synthesis of new intermetallic alloys on a substrate of white high-chromium cast iron

At mining and processing enterprises, slurry pumps are widely used, the working parts of which operate under severe wear conditions. The main material for such parts is white cast iron. Parts made from this material cannot be restored by surfacing and enterprises are forced to replace them entirely. The elemental composition and structure of the parts of the flow part of the WARMAN slurry pump made of white high-chromium cast iron of the ULTRACHROME® A05 brand have been studied. These cast irons belong to the category of non-weldable materials. These cast irons belong to the category of non-weldable materials. This problem has been solved by a new innovative approach - by creating materials with site-specific properties MSP (materials with site-specific properties). To implement it by surfacing wear areas, it is proposed to use WAAM technology based on the TIG method with two filler wires. Structurally, the technology is constructed as follows: heating the part, surfacing the first layer of steel X23Yu5T and the second layer of aluminum alloy 4043. It is shown that with this technology, cracks do not develop on the surface of the part, and after crystallization of the first layer, a standard layer of Fe3Al intrametallic compounds is formed. The hardness of the layer is 24 % higher than the original hardness of the part.