A kind of preparation method of ceramic particle metal composite material

Abstract

The invention provides a preparation method of a ceramic particle metal composite material. The preparation method comprises the following steps that ceramic particles are subjected to surface pretreatment and then placed into a chemical plating solution, and thus nickel-plated ceramic particles are obtained; an electric heating resistance wire is used for cutting a foam plate; the nickel-plated ceramic particles are washed and dried, and then coats the surface of a foam specimen, after drying, the foam specimen is bonded with a cross gate, a sprue and an ingate, and thus a lost foam casting white foam is obtained; the prepared lost foam casting white foam is placed into a sand box filled with dry sand, the dry sand is vibrated to be compacted and scraped to be flat, a plastic thin film isused for covering, a pouring cup is placed, and the negative pressure is pumped; after the dry sand is firm and is formed, metal liquid is cast; and after casting, vacuum relief, cooling and solidification then polishing are conducted. According to the preparation method of the ceramic particle metal composite material, the Rockwell hardness, impact toughness and overall abrasion resistance of the prepared composite material are greatly improved, no element diffusion exists between the ceramic particles and a metal substrate at the composite interface, and the bonding strength between the ceramic particles and metal is high.

Description

technical field [0001] The invention relates to the field of composite materials, in particular to a method for preparing ceramic particle metal composite materials. 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 other materials and grin...

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