Heat-resistant alloy steel liner plate material and preparation method thereof

Abstract

The invention discloses a heat-resistant alloy steel liner plate material comprising the following chemical element components in percentage by mass: 1.2-1.4% of carbon, 1.2-1.4% of silicon, 2.6-2.8% of manganese, 0.9-1.2% of molybdenum, 0.05-0.08% of copper, 1.2-1.4% of titanium, 0.04-0.07% of Hf, less than or equal to 0.04% of S, less than or equal to 0.04% of P and the balance of iron. The liner plate disclosed by the invention has excellent heat resistance and corrosion resistance, relatively high hardness and wear resistance, and relatively high strength and good toughness at the same time, the wear resistance of the liner plate is improved by more than 2 times as compared with a high manganese steel liner plate, and the performance-price ratio is high. The heat-resistant alloy steel liner plate material disclosed by the invention is prepared by using part of scrap iron as a raw material, performing secondary refining on the raw material, reasonably controlling the heat treatment temperature after casting, and putting the raw material in batches to ensure that the alloy quality is more stable and uniform and the comprehensive mechanical properties are improved. A refining agent disclosed by the invention is used for casting production, so that the yield is obviously improved.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a heat-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 with better c...

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