Alloy material for high wear-resistant cold rolling roll and preparation method thereof

Abstract

The invention discloses an alloy material for high wear-resistant cold rolls and a preparation method thereof. The alloy material comprises the following chemical elements in percentage by mass: 0.8-0.9% of carbon, 2.1-2.3% of tungsten, 1.2-1.5% of molybdenum, 2.2-2.4% of vanadium, 2.1-2.5% of chromium, 0.05-0.10% of niobium, 0.15-0.20% of lanthanum, 0.05-0.10% of neodymium, 0.4-0.6% of Mn, 0.03-0.05% of Co, not more than 0.030% of P, not more than 0.030% of S and the balance of ferrum. The alloy disclosed by the invention not only has high hardness and wear resistance, but also has good toughness and can resist cracking and stripping caused by bending stress, torsion stress and shearing stress, meanwhile, the alloy has high contact fatigue strength and high breaking tenacity and thermal shock strength, thereby being suitable for making cold rolls. The refining agent disclosed by the invention is applied to casting production, the porosity in a casting is reduced by 1-2 degrees, and oxide inclusions are reduced by about 2 grades.

Description

technical field [0001] The invention relates to the field of metal material preparation, in particular to an alloy material for high wear-resistant cold rolling rolls 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 an alloy mater...

AI Technical Summary

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