Antimony-containing highly-wear-resistant alloy steel material used for pump valves and preparation method of the alloy steel material

Abstract

The invention discloses an antimony-containing highly-wear-resistant alloy steel material used for pump valves. The alloy steel material comprises following chemical elements by weight: 0.3-0.45% of carbon, 0.7-0.85% of silicon, 1.1-1.4% of manganese, 2.7-2.9% of chromium, 0.3-0.5% of boron, 0.12-0.15% of cerium, 0.5-0.8% of As, 0.02-0.04% of Sb, S not less than 0.04% and P not less than 0.04%, with the balance being iron. By adoption of combination of the antimony, the boron, the cerium, and other elements, the alloy steel obtained has high hardness, good wear resistance, good toughness and good corrosion resistance, is suitable for working in highly-wearing environments, such as pump truck tank bodies, delivery pipes, bearings, pump shafts, and the like, and has service lifetime two times longer than a common material. A portion of waste iron is used as a raw material of the alloy steel material and a secondary refining process is performed so that the quality of the alloy steel material is stable and uniform. A refining agent provided by the invention is used for casting production. The porosity degree in castings is reduced by 1-2 degrees. Oxide inclusion is at about the 2 level.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to an antimony-containing high wear-resistant alloy steel material for pump valves 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 pro...

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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