Modified wear-resistant material for casting

Abstract

The invention discloses a modified wear-resistant material for a casting. The material is prepared from components in parts by weight as follows: 5-15 parts of phenolic resin, 9-11 parts of toluene, 5-8 parts of graphite powder, 1-3 parts of straw, 3-7 parts of ethyl acetate, 5-7 parts of acetyl choline, 4-7 parts of titanium dioxide, 1-3 parts of slaked lime, 2-5 parts of Mohr's salt, 2-7 parts of n-butyl alcohol, 3-7 parts of quartz powder, 3-5 parts of sodium carboxymethyl cellulose, 1-3 parts of pentachlorophenol, 2-5 parts of a dispersing agent, 3-7 parts of acetic anhydride, 5-12 parts of polyester resin, 2-6 parts of paraxylene, 8-15 parts of ethylbenzene, 9-12 parts of copper oxide powder, 7-9 parts of nano-calcium oxide, 2-4 parts of sodium carboxymethyl cellulose, 2-5 parts of benzene sulfonic acid, 3-8 parts of molybdenum disulfide and 5-10 parts of crystalline silicon oxide. By means of scientific and reasonable material collocation, a wear-resisting layer can be formed onthe surface of the casting, so that wear resistance of the casting is substantially improved, the requirement for the wear resisting characteristic of the casting in various environments is fully met,and the service life of the casting is effectively prolonged.

Description

technical field [0001] The invention belongs to the field of castings, in particular to a modified wear-resistant material for castings. Background technique [0002] With the rapid development of modern industry, mechanical equipment such as crushing, grinding, excavating, and steel rolling consume a large amount of steel wear-resistant parts. These wear-resistant parts must not only have high wear resistance but also have sufficient impact resistance. The traditional single Materials can no longer meet the requirements, therefore, composite materials have been paid more and more attention by everyone in recent years. [0003] At present, the common wear-resistant composite materials on the market mostly choose high manganese steel or high chromium cast iron as the matrix part, and choose ceramic particles or hard alloy or alloy rods as the strengthening part. High manganese steel or high chromium cast iron is wear-resistant only under the conditions of large impact, high ...

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.