High-strength and wear-resistant alloy steel

Abstract

The invention relates to a high-strength and wear-resistant alloy steel which comprises, by weight percent, 3-5% of carbon, 4-8% of vanadium nitride, 1-3% of boron carbide, 5-7% of aluminum, 4-5% of magnesium, 1-2% of silicon, 0.8-1.2% of tungsten, 0.2-0.5% of sulfur, 0.3-0.4% of phosphor, 0.5-0.8% of paraffin lubricant, 0.1-0.3% of molybdenum, 1.2-1.5% of titanium, and the balance iron. By controlling contents of each metal, each index of the alloy steel is improved, and the alloy steel is fine in rigidity, toughness, twist resistance, impact resistance, wear resistance and the like.

Description

technical field [0001] The invention relates to a high-strength wear-resistant alloy steel. Background technique [0002] In the prior art, the wear-resistant materials widely used in metallurgy, iron and steel industry, mining, cement industry, pulverizer and other mechanical parts are mostly common chrome-aluminum steel, vanadium steel or high-chromium cast iron, such as metallurgy and steel industry. The same is true for the materials of the main parts of machinery such as rolls, blow bars in mine cement, and hammer bodies on pulverizers. However, ordinary chrome-aluminum steel has limited wear resistance and short service life, resulting in increased production costs. High chromium cast iron has good wear resistance, but high cost, insufficient strength and poor toughness. At the same time, the solid-solution strengthening of chromium leads to a decrease in the compressibility of the alloy powder. What is more serious is that the affinity between chromium and oxygen is...

AI Technical Summary

Problems solved by technology

Ordinary chromium-aluminum steel has limited wear resistance and short service life, resulting in increased production costs

High chromium cast iron has good wear resistance, but high cost, insufficient strength and poor toughness

At the same time, the solid-solution strengt