Ceramic reinforced steel-based wear-resisting composite and preparation method thereof

Abstract

The invention discloses a ceramic reinforced steel-based wear-resisting composite and a preparation method thereof, and relates to the technical field of wear-resisting composites. The ceramic reinforced steel-based wear-resisting composite is prepared and obtained by pouring alloy steel molten metal to carry out casting infiltration on a ceramic prefabricated body through a casting infiltration method. The ceramic prefabricated body comprises, by weight percent, 40%-55% of spherical ceramic particles, 40%-55% of non-spherical polyhedral ceramic particles and 2%-5% of a binding agent, wherein0.5 mm<=the particle size of the spherical ceramic particles<the particle size of the non-spherical polyhedral ceramic particles<=1.5 mm. In the ceramic reinforced steel-based wear-resisting compositeand the preparation method thereof, the spherical ceramic particles cooperate with the non-spherical polyhedral ceramic particles, the particle sizes of the spherical ceramic particles and the non-spherical polyhedral ceramic particles are controlled, a unique toughening function is formed among the spherical ceramic particles, the non-spherical polyhedral ceramic particles and an alloy steel matrix, the prepared composite shows good impact resistance and wear resistance, and the functions of cutting and furrowing of grinding materials can be effectively resisted; and the preparation method is simple, and the prepared composite is suitable for being used for manufacturing hammer heads, liner plates, grinding rollers, millstones and other wear-resisting work components.

Description

technical field [0001] The invention relates to the technical field of wear-resistant composite materials, in particular to a ceramic-reinforced steel-based wear-resistant composite material and a preparation method thereof. Background technique [0002] Wear-resistant steel parts are mainly used in abrasive wear conditions in mining, metallurgy, electric power, coal and machinery industries, such as hammer heads, liners, grinding balls, grinding rollers, grinding discs, etc. Ore, soil and other materials and grinding bodies are strongly worn, and the failure is very rapid. [0003] The wear failure of most wear-resistant parts usually occurs in a certain thickness or some specific parts of the wear-resistant working surface, which not only requires the wear-resistant working surface to have high hardness, but also requires the entire wear-resistant part to have high toughness and be able to resist impact , do not break. It is difficult for wear parts made of traditional m...

AI Technical Summary

Problems solved by technology

However, for harsh wear conditions (such as high temperature, high-speed friction and wear, etc.) in modern technology, its performance still needs to be further improved.

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