High-vanadium wear-resistant alloy material and production technique thereof

Abstract

The invention relates to the field of wear-resistant materials, particularly a high-vanadium wear-resistant alloy material and a production technique thereof. The high-vanadium wear-resistant alloy material is composed of the following components in percentage by mass: 2.7-3.5% of C, 7.5-8.5% of V, 0.5-1.5% of Si, 0.8-1.5% of Mn, 2.0-3.5% of Cr, 1.0-2.5% of Mo, 1.0-2.0% of Ti, at most 0.04% of S, at most 0.04% of P and the balance of iron. The V is used instead of the Cr element in the high-chromium cast iron to generate the high-hardness VC carbide particles in the iron base. 1.0-2.0% of Ti element is added into the iron to generate a (V,Ti)C eutectic carbide in the iron. Since the workpiece generally has a certain thickness, certain amounts of chromium (Cr) element and molybdenum (Mo) element are added as hardenability-enhancing elements. The Ti element can be easily combined with the sulfur element to generate the hazardous compound Ti2S, and therefore, the sulfur and phosphorus elements are respectively strictly controlled to at most 0.04% according to the requirements.

Description

technical field [0001] The invention relates to the field of wear-resistant materials, in particular to a high-vanadium wear-resistant alloy material and a production process thereof. Background technique [0002] At present, in the field of wear-resistant materials, wear-resistant materials with martensite or bainite matrix structure or third-generation wear-resistant materials with particle-reinforced phases in addition to martensite, bainite, and retained austenite matrix are mostly used. Material-high-chromium cast iron develops wear-resistant parts. Since there is a high-hardness reinforcing phase Cr7C3 in high-chromium cast iron, the microhardness of its carbides reaches HV1300-1600, so it is better than the previous two generations of wear-resistant materials-white mouth The performance of cast iron and high manganese steel has been greatly improved, and the hardness can reach HRC60-65. However, because the carbides are usually elongated and relatively thick, their im...

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Problems solved by technology

[0016] The invention also provides a production process of high-vanadium wear-resistant alloy materials, which can make the VC particles in the high-vanadium wear-resistant materials more agglomerated and more evenly distributed, and overcome the large amount of VC in the existing high-vanadium wear-resistant materials. There are several unsatisfactory shapes such as blocky, flowering, strip, rod and worm-like, and the distribution of VC particles has insufficient carbide shape and distribution such as chrysanthemum-like distribution, and by reducing the number of particles in unideal shapes, it can improve The performance reliability of high vanadium wear-resistant materials, so as to further improve its comprehensive performance

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