Method for optimizing interface of tungsten carbide particle reinforced iron-based composite material

Abstract

The invention relates to a method for optimizing an interface of a tungsten carbide particle reinforced iron-based composite material. The method comprises the steps that the tungsten carbide particlereinforced iron-based composite material is obtained, specifically, the tungsten carbide particle reinforced iron-based composite material comprises a composite layer; the prepared composite layer ismachined into a specific shape and polished, the surface is cleaned, then the composite layer is placed in a mold, 45 molten steel is casted, the metallurgical bonding of the 45 molten steel and thecomposite layer is realized, and the tungsten carbide particle reinforced iron-based surface layer composite material is prepared, specifically, the mass ratio of the casting amount to the composite layer is 10: 1 to 14: 1, and the casting temperature is 1748-1848 k; and the tungsten carbide particle reinforced iron-based surface layer composite material is subjected to a heat treatment process, the quenching temperature is 1138-1218 k, the heat preservation is carried out for 20-60 min, air cooling is carried out, the tempering temperature is 798-998 k, the heat preservation is carried out for 1-3 h, and then air cooling is carried out. According to the technical scheme, the prepared composite material is good in wear resistance, high in surface appearance quality and compactness, uniformin wear-resistant layer thickness and unlimited in use requirements.

Description

technical field [0001] The invention relates to the field of preparation of wear-resistant composite materials, in particular to a method for optimizing the interface of tungsten carbide particles reinforced iron-based composite materials. Background technique [0002] In industrial production and daily life, it is common for friction between different objects to cause wear. For example, some parts in shield cutting tools, mining machinery, agricultural machinery and tunneling equipment are susceptible to wear by various abrasives and materials such as soil, sand, ore, and a large amount of wear-resistant materials are consumed every year. Some tools in daily life, such as mobile phones, computers and watches, are easily scratched and require a certain degree of wear resistance. In the past two decades, the results of investigations on the friction and wear of electromechanical equipment in developed countries are shocking. The annual loss due to wear failure is about 100 b...

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Problems solved by technology

[0003] At present, the methods for preparing tungsten carbide particle-reinforced iron-based composite materials include non-die casting infiltration method, pressure casting infiltration method, negative pressure casting infiltration method, and centrifugal casting infiltration method. Although the composite materials prepared by these methods have improved the wear resistance of the material surface performance, but the surface morphology of the composite layer is poor, the thickness is small and uneven, and the density is low, which limits the use requirements

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