Wear-proof heat-resistant steel and preparation method thereof

Abstract

The invention provides a preparation method of a wear-proof heat-resistant steel. The preparation method of the wear-proof heat-resistant steel lowers cost. The wear-proof heat-resistant steel is characterized by comprising, by weight percentage, 0.24 % - 0.4% of C, 9.5 % - 10.5% of Mn, 1.5 % - 1.9% of Si, 0.7 % - 1.20% of Nb, 0.5 % - 0.8% of V, 19 % - 21% of Cr, 5%-6% of Ni, 0-0.045% of P, 0.2 %- 0.3% of S and the balance Fe. The preparation method of the wear-proof heat-resistant steel has the beneficial effects that the heat-resistant wear-proof alloy steel has good performance and has thefeatures of high hardness, high strength, high tenacity and the like, and the wear-proof heat-resistant steel is suitable for various mining machines and engineering machines such as automobiles, bulldozers, loaders, excavators and dump trucks.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a preparation method of wear-resistant and heat-resistant steel. Background technique [0002] At present, there are many products about low-alloy wear-resistant steel, but when manufacturing this type of steel, in order to ensure good billet quality and performance, the content of sulfur element (mass percentage) is generally controlled within 3.00% . In order to obtain qualified sulfur-containing elements, alloys with high sulfur content are generally used. The materials are difficult to find and the ingredients are also difficult to control, resulting in extremely high production costs. In addition, the addition of more alloying elements increases the carbon content and affects the properties of the material. As a result, even if more alloying elements such as Cr, Ni, Mo, etc. are added, the core is often difficult to be completely hardened, so that all The difference in hardn...

AI Technical Summary

Problems solved by technology

In order to obtain qualified sulfur-containing elements, alloys with high sulfur content are generally used. The materials are difficult to find and the ingredients are also difficult to control, resulting in extremely high production costs.

In addition, the addition of more alloying elements increases the carbon content and affects the properties of the material. As a result, even if more alloying elements such as Cr, Ni, Mo, etc. are added, the core is often difficult to be completely hardened, so that all The difference in hardness between the surface and core of the alloy is large, which reduces the service life of the material