Preparation method for zirconia alumina and high chromium cast iron composite material

Abstract

The invention relates to a preparation method for a zirconia alumina and high chromium cast iron composite material. The prepared composite material is high in hardness, abrasion resistance and toughness, and the binding strength between the zirconia alumina and the high chromium cast iron is high. The preparation process of the composite material comprises the following steps that zirconia alumina ceramic particles are modified, and the zirconia alumina ceramic particles with the surfaces plated with nickel layers are obtained, washed and dried for later use; foam plates are cut, foam samples, transverse pouring gates, straight pouring gates and inner pouring gates are obtained, the surfaces of the foam samples are coated with the zirconia alumina ceramic particles, the foam samples and the transverse pouring gates, the foam samples and the straight pouring gates as well as the foam samples and the inner pouring gates are stuck into wholes, coating is soaked and hung and then dried, and a lost foam garage kit is obtained; the prepared lost foam garage kit is placed into a sand box, the sand box is filled with dry sand, holt ramming and flattening are conducted, covering is conducted through a plastic thin film, a pouring cup is placed, and the lower portion of a sand mold is subjected air exhaust to from the negative pressure through a vacuum pump; and after sand fastening forming, molten high chromium cast iron metal is poured, vacuum is released after pouring, a casting is taken out after cooling and solidification, and then heat treatment is conducted.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing a zirconium corundum high-chromium cast iron composite material. Background technique [0002] As we all know, two objects that are in contact with each other or moving relative to each other will have friction on their surfaces. In general, friction is often accompanied by wear, and when the wear reaches a certain level, it will inevitably lead to the failure of various machines or parts. a great safety hazard. my country is also a big manufacturing country. In our country, departments such as metallurgy, mining, building materials, electric power, and coal use a lot of mining machinery, engineering machinery, and various crushing and grinding equipment. These equipment generally operate in harsh industrial environments. Under the circumstances, some parts will consume a large amount of metal every year due to the wear and tear of sand, ore, soil and oth...

AI Technical Summary

Problems solved by technology

[0003] Under actual working conditions, some vulnerable parts not only have abrasive wear, but also are often accompanied by corrosion wear and high temperature wear. In a compound wear condition, various factors interact to aggravate the wear and failure of parts.

This type of working condition is common in mining, metallurgy, building materials and other industrial production, such as transporting thick slurry pumps containing coal slime and gangue. Corrosion of the flow medium, the service life is very short, although the part is small in size, it has high technical requirements and is difficult to manufacture