Silicon manganese nitride alloy and smelting method thereof

Abstract

The invention provides a nitrated silicon-manganese alloy and its melting process, which includes the following steps: material getting, forevacuum, nitrogen melting, pressure keeping at constant temperature, clamp dog adglutinating and so on. The percentage by weight of chemical composition of the produced nitrated silicon-manganese alloy product is as follows: 55-70% Mn, 13-20% Si, 9-15% N, 1-2% C, and the other is iron and inevitable impurity, of which the density is 6.1t / m3, and the alloy could be used as additive for smelting 20 manganese-silicon low-alloy steel or steel species including bar above HRB400 level and can quickly immerse into the liquid steel and sufficiently contact with the liquid steel, the absorption and availability ratio of the pivot element including manganese and silicon can arrive at more than 85%, the alloy can reinforce the solid-melting forced characteristic of the steel and can reduce the cost, and can substitute the current additive series raw materials and simplify the species and metallurgy species of the purchased and stored steel-smelting raw materials, is suitable for organization of production and business administration, can reduce the managerial operation cost, which has great economic benefit and environmental benefit and good extension and operation foreground.

Description

Technical field: [0001] The invention relates to the smelting technology of iron nitride alloy, which belongs to the technical field of metallurgical engineering, in particular to a smelting method of manganese nitride silicon alloy. Background technique: [0002] We know that in the metallurgical production industry, when smelting and producing 20 manganese silicon and other low alloy series steels, it is necessary to use additive raw materials containing manganese and silicon. There are many kinds of additives available for selection, and the more common and frequently used are various nitride metallurgical additives such as metal silicon nitride, ferrosilicon nitride and manganese alloys. Undoubtedly, over the years, these traditional additives have played an active role in promoting the rapid development of my country's metallurgical industry, especially in the production process of smelting alloy steel. But there is a fatal flaw in these commonly used additives, which ...

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Problems solved by technology

So far, there have been mature processes for smelting metal silicon nitride, ferrosilicon nitride, ferromanganese nitride, ferrochromium nitride, and metal manganese nitride in nitriding metallurgy, and silicon manganese nitride ferroalloy has been reported in the literature as the After the manganese-silicon alloy and ferrosilicon are melted together, the powder is produced by two times of nitriding in a special nitriding furnace, but this method has a long process and high production cost