Wear-resistant material for casting

Abstract

The invention relates to a wear-resistant material for casting, prepared from the following in parts by weight: 10-16 parts of dextrin powder, 12-18 parts of polyvinyl alcohol, 12-18 parts of iron oxide powder, 6-10 parts of n-butyl alcohol, 1-6 parts of sodium orthophosphate, 3-9 parts of starch paste, 3-9 parts of lignosulfonic acid, 2-8 parts of sodium carboxymethyl cellulose, 2-10 parts of silica sol, 10-20 parts of modified graphene, 0.3-0.9 parts of iron oxide red powder, 6-12 parts of hollow glass microspheres, 10-18 parts of triphenyl phosphite, 10-30 parts of acrylic modified polyurethane, 10-18 parts of nano ceramics powder, 2-8 parts of sodium benzoate, 3-9 parts of aluminum phosphate, and 3-7 parts of epoxy resin. A wear-resistant layer can be established on the surface of a casting through scientific and reasonable material matching, thereby greatly improving the wear resistance of the casting, fully satisfying the wear-resisting characteristics of the casting under various environments, and effectively prolonging the service life of the casting.

Description

technical field [0001] The invention belongs to the technical field of wear-resistant materials, in particular to a wear-resistant material used for castings. Background technique [0002] Castings are closely related to daily life, especially in agricultural machinery. The operating devices of agricultural machinery often come into direct contact with sandy soil during the working process, and the sandy soil often contains hard particles of stones and sand. The operating devices of agricultural machinery are in service in such an environment and are subject to strong abrasive wear. When the pH of the soil is strong, the corrosion on the surface of the operating device of agricultural machinery is also very serious, and it will also induce corrosion-wear joint action, shortening the life of the agricultural machinery. The service life of working equipment. The erosion, corrosion, wear, corrosion, and the interaction between wear and corrosion on the surface of agricultural...

AI Technical Summary

Problems solved by technology

High manganese steel or high chromium cast iron is wear-resistant only under the conditions of large impact, high stress and hard abrasive, and its yield strength is low and easy to deform. Although ceramic particles can enhance the wear resistance of composite materials to a certain extent, However, due to the limitations of ceramic particles, the improvement of the wear resistance of wear-resistant composite materials is limited, and it still cannot meet the operating requirements of high wear intensity.

[0004] Although it has been reported that hard alloy rods are used as the strengthening part to combine with the matrix part to prepare wear-resistant composite materials, the preparation method uses welding methods to fix the cemented carbide rods, or make brazing holes on the substrate, and then insert the hard alloy rods. Cemented carbide rods are brazed in the matrix through brazing holes. These manufacturing methods are not only cumbersome and time-consuming, but also welding cannot ensure a good combination of cemented carbide metal rods and the matrix, and the wear resistance of the material is also greatly reduced.