Wear-resistant alloy material for hydraulic valve and preparation method thereof

Abstract

The invention provides a wear-resistant alloy material for a hydraulic valve. The wear-resistant alloy material contains the following chemical elements by mass percent: 0.1-0.3% of carbon, 0.6-0.9% of silicon, 3.6-3.9% of manganese, 0.4-0.8% of chromium, 2.3-2.5% of nickel, 0.02-0.05% of molybdenum, 0.4-0.6% of B, 0.3-0.5% of Ti, not more than 0.030% of P, not more than 0.030% of S and the balance of iron. The porosity is reduced by 1-2 degrees by adding a refining agent. The wear-resistant alloy material has the beneficial effects that by combining the raw materials such as boron, nickel and the like and reasonably setting the proportion and the production process as well as the putting in order, the formed alloy material has the characteristics of relatively high strength and hardness, wear resistance and corrosion resistance, can obviously prolong the lives of wear-resistant parts and is suitable for casting or coating of the hydraulic valve; by using part of scrap iron as the raw material, the quality of the alloy is stable and uniform; as the refining agent is used for casting production, the porosity is reduced by 1-2 degrees.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to a wear-resistant alloy material used for hydraulic valves 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, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, Costs cannot be taken into account. In many cases, the production requirements cannot be met, and further improvements are needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the developme...

AI Technical Summary

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, hardness, rust resistance, corrosion resistance, high and low temperature resistance, brittleness, toughness, Costs cannot be taken into account. In many cases, the production requirements cannot be met, and further improvements are needed to improve production efficiency, reduce costs, improve safety, provide guarantee for the development of high-tech, and provide impetus for social development. There are still many tasks to be done. difficult