Method for preparing primary column shaped horniness phase composite wear-resistant grinder dish

Abstract

The invention discloses a method for preparing a composite wear resistant abrasive disk with a protogenous columnar hard phase. The wear resistant abrasive disk prepared by the method is formed by pouring and compounding a high hardness columnar alloy hard phase and a high tenacity base metal. The method comprises the following steps: weaving an alloy powder core wire material into a framework similar to the shape of the abrasive disk, and pouring smelted high temperature base material molten steel into a die cavity of an abrasive disk casting mould; putting the woven framework similar to the shape of the abrasive disk into the casting die cavity filled with the high temperature base metal molten steel quickly, performing cast-infiltration, sintering or melting on the woven alloy powder core wire material framework by using the heat of the high temperature base metal molten steel so as to generate a highly-dispersed high hardness columnar alloy hard phase in situ; and cooling the phase at room temperature to produce the composite wear resistant abrasive disk using high-tenacity and high-strength metal as a base and containing the metallurgically-combined protogenous columnar hard phase. The composite wear resistant abrasive disk with the protogenous columnar hard phase has ultra wear resistance and good impact resistant toughness, and the service life of the abrasive disk is close to or exceeds the imported products of the same type.

Description

technical field [0001] The invention relates to the preparation of grinding discs, in particular to a method for preparing a composite wear-resistant grinding disc with a primary columnar hard phase. Composed of two parts, it has the high strength and high toughness of the base metal, and has the high hardness and high wear resistance of the hard phase, and can withstand high pressure and strong wear at the same time. Background technique [0002] Grinding disc is a kind of grinding tool on the grinding machine. It is mainly used in vertical mills in electric power, mining, cement, chemical industry, coal and other departments, and is used for grinding coal, ore, cement raw / clinker, etc. The wear resistance and toughness of the grinding disc directly affect its service life. At present, the materials used to make grinding discs are mainly high-alloy steel and cast iron. Although high-alloy steel has good toughness, it has low hardness, so its wear resistance is poor, and ex...

AI Technical Summary

Problems solved by technology

At present, the materials used to make grinding discs are mainly high-alloy steel and cast iron. Although high-alloy steel has good toughness, it has low hardness, so its wear resistance is poor, and expensive rare alloy elements are used, so the product cost However, the use of cast iron materials, although the wear resistance is guaranteed, but due to its poor toughness, brittle fractures often occur during use, resulting in the shutdown of production enterprises.

Although there are also some composite materials used to make mill discs, they have not yet achieved good results.

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