High chrome alloy steel material and preparation method thereof

Abstract

The invention discloses a high chrome alloy steel material and a preparation method thereof. The high chrome alloy steel material contains the following chemical elements by mass percent: 2.6-2.8% of carbon, 11.3-12.5% of chrome, 0.1-0.3% of nickel, 0.3-0.5% of manganese, 0.04-0.06% of molybdenum, 0.3-0.5% of vanadium, 0.005-0.006% of titanium, 0.7-0.8% of copper, not more than 0.03% of P, not more than 0.03% of S and the balance of iron. The high chrome alloy steel material has the beneficial effects that the hardenability and corrosion resistance of steel can be improved by increasing the content of chrome; by reasonably setting the ratio and the production process, the formed alloy material has excellent comprehensive mechanical properties and has the advantages of ultrahigh strength, good wear resistance, strong corrosion resistance and the like; by using the adopted refining agent for casting production, the yield is obviously increased, and in particular, the porosity in castings is reduced by 1-2 degrees and is effectively controlled, pores can not be generated on the surfaces of the castings and oxide inclusions are obviously reduced.

Description

technical field [0001] The invention relates to the field of metal materials, in particular to a high-chromium alloy steel material and a preparation method thereof. Background technique [0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school Low-carbon alloy steel, etc. So far, although alloy steel technology has been greatly developed, there are still many problems, such as wear resistance, corrosion resistance, impact toughness, hardness, etc., which cannot be taken into account in many occasions. However, further improvement is needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and provide impetus for social development. The task is still very arduous. Contents of the invention ...

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Problems solved by technology

[0002] The development of alloy steel has a history of more than 100 years. So far, a variety of alloy steels have been applied in industry, mainly including the following types: quenched and tempered steel, spring steel, tool steel, high speed steel, die steel, high school Low-carbon alloy steel, etc. So far, although alloy steel technology has been greatly developed, there are still many problems, such as wear resistance, corrosion resistance, impact toughness, hardness, etc., which cannot be taken into account in many occasions. However, further improvement is needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and provide impetus for social development. The task is still very arduous