Wear resistant high-carbon steel pump valve material and preparation method thereof

Abstract

The invention discloses a wear resistant high-carbon steel pump valve material. The wear resistant high-carbon steel pump valve material comprises the following chemical elements in percentage by mass: 2.2-2.4% of carbon, 1.2-1.4% of silicon, 2.1-2.3% of manganese, 0.7-0.9% of molybdenum, 0.05-0.08% of nickel, 0.7-0.9% of vanadium, 1.2-1.4% of titanium, 0.04-0.07% of Ta, not more than 0.04% of S, not more than 0.04% of P, and the balance iron. The elements of molybdenum, vanadium and titanium are added in alloy steel based on high-carbon or low-carbon steel, so that the alloy steel not only maintains the high strength and the high hardness of the high-carbon steel but also has the characteristics of high thermal strength, good wear resistance and better toughness; and one part of waste steel serves as a raw material, and is refined twice, so that the quality is more stable and uniform. A refining agent is used for producing castings, so that the porosity is reduced by 1-2 degrees, and the oxide inclusion is at about grade 2. The alloy steel is applied to parts with high-temperature operation and high abrasion, and is long in service life.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a wear-resistant high-carbon steel pump valve material and a preparation method thereof. Background technique [0002] The working environment of pump valves is diverse and harsh, and the requirements for materials are very high. At present, there are many kinds of alloy steel used in pump valves, and the technology has made great progress, but there are still many problems, such as wear resistance, hardness, rust resistance Performance, corrosion resistance, high and low temperature resistance, brittleness, toughness, etc., cannot meet the production requirements in many occasions, and further improvement is needed to improve production efficiency, reduce costs, and improve safety. Guaranteeing and providing impetus for social development are still arduous tasks. Contents of the invention [0003] The object of the present invention is to provide a wear-resistant hig...

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Problems solved by technology

[0002]Pumps and valves work in various and harsh environments, and have high requirements for materials. At present, there are many kinds of alloy steels used for pumps and valves, and the technology has made great progress, but There are still many problems, such as wear resistance, hardness, antirust performance, corrosion resistance, high and low temperature resistance, brittleness, toughness, etc., which cannot meet the production requirements in many occasions, and further improvement is needed to increase production efficiency. , reduce costs, improve safety, provide guarantee for the development of high-precision technology, and provide impetus for social development, the task is still very arduous