Heat-resistant and wear-resistant vulcanized rare earth alloy steel as well as preparation method and application thereof

Abstract

The invention discloses a heat-resistant and wear-resistant vulcanized rare earth alloy steel as well as a preparation method and application thereof, belonging to the field of metallurgical industry. The alloy steel comprises the following components by weight percent: 0.1 to 1.0 percent of carbon, 0.2 to 0.4 percent of silicon, 0.1 to 1.5 percent of tungsten, 0.2 to 0.8 percent of manganese, 0.3 to 1.7 percent of molybdenum, 0.5 to 2.5 percent of sulfur, 0.4 to 2.0 percent of chromium, 0.1 to 0.5 percent of vanadium, 0.001 to 0.1 percent of rare earth and balance of ferrum. With the excellent properties of heat resistance, wear resistance, solid self-lubricating, etc., the heat-resistant and wear-resistant vulcanized rare earth alloy steel is suitable for producing high-temperature and wear-resistant working parts, and can be processed into sliding bearings of various shapes, bushes, shaft sleeves, wear-resistant lining boards, return boards, machine tool slideway and other products under low heavy load. The products made of the heat-resistant and wear-resistant vulcanized rare earth alloy steel can replace copper alloy products, have the advantages of pressure resistance, wear resistance and the like and can obviously prolong the service life of workpieces.

Description

technical field [0001] The invention relates to an alloy steel, in particular to a sulfided heat-resistant and wear-resistant rare earth alloy steel, a preparation method of the sulfided heat-resistant and wear-resistant rare earth alloy steel, and the use of the alloy steel in the production of high-temperature wear-resistant working parts It belongs to the field of metallurgical industrial machinery. Background technique [0002] Alloy steel can be divided into two mechanical properties, anti-friction and anti-friction. It is mainly used in the manufacture of mechanical parts under high temperature and friction resistance, or in machine parts where lubricating oil is easily carbonized and fails in high temperature environment and cannot be lubricated. For example: metallurgical steelmaking, steel rolling, sintering, cement equipment, machine tool rails and other low-speed and heavy-load sliding body parts, these parts require a small friction coefficient and anti-wear perf...

AI Technical Summary

Problems solved by technology

[0005] ① The microstructure and wear resistance of the alloy steel need to be improved; there is no rare earth component to refine the crystal, the texture of the material is rough, the density is poor, and the structure is loose; the anti-friction and wear resistance are poor, and the toughness of the material is also poor. Moderate pressure and impact properties are prone to brittle fracture,

[0006] ② During the preparation process of this alloy steel, the gas in the molten steel is not easy to fix, so that the steel castings are prone to porosity defects, the yield of steel castings is low, and the waste of resources is too large

[0007] ③In the preparation process of this alloy steel, there is no rare earth to purify molten steel in molten steel, resulting in many inclusions, prone to cracks in castings, and reduced mechanical properties