Wear-resistant alloy steel liner plate material with high strength, and preparation method thereof

Abstract

The invention discloses a wear-resistant alloy steel liner plate material with high strength. The wear-resistant alloy steel liner plate material comprises the following chemical elements by mass percent: 1.2-1.4% of carbon, 0.9-1.2% of silicon, 3.5-3.7% of manganese, 0.5-0.7% of boron, 2.1-2.3% of magnesium, 1.2-1.4% of tungsten, 0.7-0.9% of molybdenum, 0.04-0.07% of Sb, no more than 0.04% of S, no more than 0.04% of P and the balance of iron. The obtained alloy steel has good hardness, obdurability, distortion resistance, impact resistance, wear-resisting property and high-temperature resistance by using the elements such as tungsten, magnesium, stibium and the like. A part of scrap iron is used as a raw material, so that the alloy is more stable and even in quality by secondary refining, reasonably controlling the thermal treatment temperature after casting, and feeding the raw materials in batches, and the comprehensive mechanical performance is improved. A refining agent disclosed by the invention is applied to casting production, so that the yield is obviously improved, particularly, the porosity in a cast is reduced by 1-2 degrees, and oxide inclusion is at about second level.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high-strength wear-resistant alloy steel liner material and a preparation method thereof. Background technique [0002] After more than 30 years of development, the liner material has experienced the development of high manganese steel, ordinary white cast steel, nickel hard cast iron, high chromium white iron, modified high manganese steel and medium and low alloy steel with various quenching and tempering processes stage. At present, in domestic practical applications, high manganese steel is still dominant. Among several mainstream materials, high manganese steel has good toughness, but its wear resistance and corrosion resistance are not ideal; high chromium cast iron has good wear resistance, but its toughness is low. Poor; the brittleness and corrosion resistance of medium and low alloy steels are not up to standard. It is necessary to research and develop liner materials...

AI Technical Summary

Problems solved by technology

At present, in domestic practical applications, high manganese steel is still dominant. Among several mainstream materials, high manganese steel has good toughness, but its wear resistance and corrosion resistance are not ideal; high chromium cast iron has good wear resistance, but its toughness is low. Poor; the brittleness and corrosion resistance of medium and low alloy steels are not up to standard