Additive for improving mechanical properties of a silicon-manganese alloy

Abstract

The invention belongs to the technical field of preparation of silicon-manganese alloy, and specifically relates to an additive for improving mechanical properties of a silicon-manganese alloy, the additive includes the following raw materials: silicon powder, manganese powder, aluminum powder, a titanium dioxide composite, a surfactant, polyacrylonitrile-based carbon fiber, alpha-cyanoacryloyl isobutyl glycolate, a flux, heterocycle-containing aminophosphate, manganese hydroxide and guanidine nitrate. Compared with the prior art, the additive has the following advantages: the silicon-manganese alloy can be fluxed and refined by reasonable proportioning of raw materials, production of toxic substances can be avoided in the reaction process, by the synergistic effect of the polyacrylonitrile-based carbon fiber and the alpha-cyanoacryloyl isobutyl glycolate, the hard water resistance can be enhanced, and the abrasion performance of the heterocycle-containing aminophosphate can also be enhanced. The additive can effectively improve the mechanical properties of the silicon-manganese alloy, increases the melting-resistant temperature, reduces the power consumption during smelting, and is suitable for promotion and use.

Description

technical field [0001] The invention belongs to the technical field of silicon-manganese alloy preparation, and in particular relates to an additive for improving the mechanical properties of the silicon-manganese alloy. Background technique [0002] Steel materials are the pillar materials for the development of the national economy, especially high-performance steel materials are of great significance to the development of the national economy. Steel materials are materials formed by adding appropriate amounts of other alloy elements on the basis of iron-carbon binary alloys. The content of carbon elements , Existing form, morphology and distribution play an important role in the performance of steel materials; silicon-manganese alloy is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is a ferroalloy with wide application and large output. Silicon-manganese alloy is a compound deoxidizer commonly used in steelmaking. It is ...

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Problems solved by technology

[0002] Steel materials are the pillar materials for the development of the national economy, especially high-performance steel materials are of great significance to the development of the national economy. Steel materials are materials formed by adding appropriate amounts of other alloy elements on the basis of iron-carbon binary alloys. The content of carbon elements , Existing form, morphology and distribution play an important role in the performance of steel materials; silicon-manganese alloy is an alloy composed of manganese, silicon, iron and a small amount of carbon and other elements. It is a ferroalloy with wide application and large output. Silicon-manganese alloy is a compound deoxidizer commonly used in steelmaking. It is advantageous in the production of low-carbon ferromanganese and a reducing agent for the production of metal manganese by electrosilicothermal method. It can be smelted in continuous operation in large, medium and small submerged arc furnaces. Silicon Half of the manganese alloy is refined and produced by using carbon to simultaneously reduce manganese ore and silicon ore manganese oxide and silicon dioxide in a submerged arc furnace. In several stages of technological development of master alloys and metal additives, the addition of pure metals often causes the temperature of the alloy melt to exceed the allowable temperature of the process, resulting in poor melt quality and substandard alloy properties. The use of master alloys has the advantages of easy operation, accurate addition, and alloy The composition is easy to control, etc., but there are also disadvantages such as high energy consumption, large burning loss, poor metallurgical quality, high cost, and environmental pollution. There are few additives suitable for silicon-manganese alloys on the market. Raw material components, adding potassium cryolite, binders, antioxidants, etc., reduce the low friction coefficient of alloy elements, improve shear strength and impact resistance, and form a dense oxide film on the surface of the obtained silicon-manganese alloy to improve its Anti-corrosion ability, and then enhance its comprehensive performance. With the continuous improvement of industrial requirements, there are higher requirements for its mechanical properties. Therefore, further research and improvement are needed.

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