Nanometer alloy cast iron grinding cylpebs and preparation method thereof

Abstract

The invention discloses a nanometer alloy cast iron grinding cylpebs and a preparation method thereof. The nanometer alloy cast iron grinding cylpebs comprises the raw materials in percentage by weight: 3.2-3.8% of C, 0.5-1.2% of Si, 0.7-1.5% of Mn, less than or equal to 0.01% of S, less than or equal to 0.01% of P, 1.0-3.0% of Cr, 0.02-0.03% of B4C, 0.05-0.12% of Re and the balance of Fe. The preparation method comprises the steps of firstly mixing C, Si, Mn, S, P, Cr and Fe, then adding into an electric intermediate-frequency induction furnace, smelting, discharging at 1400 DEG C-1450 DEG C, and placing into a steel teeming ladle; adding B4C and Re into the steel teeming ladle, heating to lead the B4C and Re to be fully mixed with the molten steel, pouring into the cavity of a metal mold at 1300 DEG C-1350 DEG C, demolding and stamping at 1200 DEG C, conducting oil quenching, and tempering to obtain the finished product, wherein the oil quenching temperature is controlled to be higher than or equal to 850 DEG C. According to the invention, the prepared grinding cylpebs is compact in structure, enhanced in impact toughness and has the characteristics of being non-crushing, non-deforming, low in abrasion, and the like.

Description

technical field [0001] The invention relates to a nano-alloy cast iron grinding section and a preparation method thereof, belonging to the field of casting. Background technique [0002] As a kind of grinding body, the grinding section is widely used in cement plants and grinding stations. The annual market demand is relatively large. The quality of the grinding section currently on the market is poor, and it is prone to breakage and deformation. Adding nano-materials can The number of crystal nuclei in the grinding section is greatly increased, and some of them become nuclei, making the structure dense and the grains fine; at the same time, some nanoparticles become particles in the metal grinding section, but due to the fine grain size of nanomaterials, direct addition will Part of it floats on the surface of the metal grinding section, and the effect of uniform dispersion cannot be achieved. Contents of the invention [0003] In order to alleviate the deficiencies and ...

AI Technical Summary

Problems solved by technology

[0002] As a kind of grinding body, the grinding section is widely used in cement plants and grinding stations. The annual market demand is relatively large. The quality of the grinding section currently on the market is poor, and it is prone to breakage and deformation. Adding nano-materials can The number of crystal nuclei in the grinding section is greatly increased, and some of them become nuclei, making the structure dense and the grains fine; at the same time, some nanoparticles become particles in the metal grinding section, but due to the fine grain size of nanomaterials, direct addition will Part of it floats on the surface of the metal grinding section, and the effect of uniform dispersion cannot be achieved