Alloy steel material for anti-corrosion pump valve and preparation method thereof

Abstract

The invention discloses an alloy steel material for an anti-corrosion pump valve. The alloy steel material for the anti-corrosion pump valve is prepared from the following raw materials in percentage by weight: 0.12 to 0.22 percent of C, 1.2 to 2 percent of Cr, 0.5 to 1.5 percent of Ni, 0.8 to 1.5 percent of Mn, 0.3 to 0.8 percent of Cu, 0.8 to 1.4 percent of Si, 0.05 to 0.2 percent of Nb, 0.2 to 1.2 percent of Be, 0.02 to 0.08 percent of Ta, 0.02 to 0.08 percent of Zr, 0.02 to 0.08 percent of V, 0.02 to 0.08 percent of Ce, 0.1 to 0.2 percent of rear earth, and the balance Fe. The invention provides the alloy steel material for the anti-corrosion pump valve, which has favorable corrosion resistance and abrasive resistance, a good anti-rust property, high hardness and good toughness and brittleness. A preparation method provided by the invention can be beneficial to enabling the performance of the alloy steel material to be more stable and uniform, and is high in casting yield and production efficiency, low in cost, and worth popularizing.

Description

technical field [0001] The invention relates to the technical field of alloy materials, in particular to a corrosion-resistant alloy steel material for pump valves and a preparation method thereof. Background technique [0002] Alloy steel refers to steel in addition to iron and carbon, but also added other alloying elements. The main alloying elements of alloy steel are silicon, manganese, chromium, nickel, molybdenum, tungsten, vanadium, titanium, niobium, zirconium, cobalt, aluminum, copper, boron, rare earth and so on. There are many types of alloy steel, which are usually divided into low alloy steel, medium alloy steel and high alloy steel according to the content of alloy elements. Pump valve is the collective name of pumps and valves. It is used to transport liquids, including water, oil, acid and alkali, emulsions, suspoemulsions, and liquid metals; it can also transport gases, gas-liquid mixtures, and solid-liquid mixtures, such as mud, Coal slurry, ore slurry, e...

AI Technical Summary

Problems solved by technology

The working environment of pump valves is different, and they are often used in harsh conditions. Therefore, the requirements for materials are very high. With the rapid development of industrial technology, there are more and more varieties and properties of alloy steel materials for pump valves. Some properties have also been greatly improved, but the overall performance is not good, there are still low wear resistance, insufficient hardness, poor rust resistance, poor corrosion resistance, unstable high and low temperature resistance, poor brittleness and toughness, etc. Therefore, in many cases, it cannot fully meet the needs of production. The comprehensive performance requirements for alloy steel materials for pumps and valves are relatively high. Therefore, the performance of alloy steel, production efficiency and production cost methods still need to be improved.