Method for hot metal spheroidization

Abstract

The invention discloses a method for hot metal spheroidization. According to the method, 2.8-4.0 % of carbon, 1.8-4.3 % of silicone, 0.08-2 % of manganese and balance of iron are put into a melting furnace to heat at the temperature of 1450-1620 DEG C to obtain hot metal; the hot metal is added into a hot metal ladle of a wire feeding spheroidizing device; the hot metal is covered with glass of 100-120 mm and the glass adding amount is 0.6-0.9 % of the total hot metal amount; the spheroidization is conducted; the magnesium wire feeding speed is 50-260 m/min; the hot metal rolls when the magnesium wire and the hot metal react; the glass on the hot metal melts to form a residue layer floating on the surface of the hot metal simultaneously; the total magnesium wire feeding amount is 0.6-0.9 % of the total hot metal amount; when the wire feeding is over, the spheroidization is accomplished. The method has the advantages that the dose of covering agent is less, the ductility on the hot metal surface is uniform, the air isolating effect is good, the nodularizer is accelerated to be fully absorbed and the spheroidization is uniform, the obtained products are regular in particles and spherical shapes and the manufacturing cost is low.

Description

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AI Technical Summary

Benefits of technology

This patented technology involves combining two different techniques: one technique called wireswinding or tape casting, while another technique called plasma arc spray coating. These methods aim at improving the quality of cast metal by reducing impurities like oxygen from contaminants such as nitrogen gas during production processes. By adding specific types of material onto these metals without burning them out before they are used, this process helps prevent damage caused by high temperatures associated with conventional smelting operations. Additionally, the use of special devices made up entirely of ceramic fiber makes the process more effective due to its ability to absorb sulfur dioxide gases released through combustion reactions compared to other alternatives. Overall, these technical improvements enhance the performance of steel making technologies.

Problems solved by technology

This technical problem addressed by this patents relates to improving the efficiency and quality of metallic casting processes used during production. Traditional methods involve adding layers or covers over the top of an ingot before being cast, which can lead to excessive amounts of material needed but also results in nonuniformity across the covered area due to imperfections like cracks caused from thermal shock and gas pressure. Additionally, current methods require continuous monitoring and adjustments throughout the process, leading to wasted materials and difficulty in maintaining constant levels within the cover layer.

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