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Microwave synthesis method of Si-Mn-N alloy

A silicon-manganese nitride alloy and microwave synthesis technology is applied in the field of high-temperature synthesis of silicon-manganese nitride alloy, which can solve the problems of low production efficiency, high smelting power consumption, long nitriding time, etc., so as to improve the operation rate and save water resources. , the effect of low heat storage

Inactive Publication Date: 2011-02-02
SINOSTEEL JILIN FERROALLOYS
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Problems solved by technology

The shortcomings of the traditional method are mainly the shortcomings of long nitriding time, low nitrogen content, high power consumption for smelting, and low production efficiency.

Method used

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  • Microwave synthesis method of Si-Mn-N alloy

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Embodiment Construction

[0016] As can be seen from the accompanying drawings, the microwave synthesis method of silicon-manganese nitride alloy of the present invention is characterized in that 2.45 GHz microwave is used as heat source, with ferrosilicon, metal manganese, industrial silicon as raw materials, according to the mass of dry material, its raw material mass parts The sum is 100, wherein, 74 parts of ferrosilicon with a silicon content of 75-77% and a particle size of ≤80 mesh, 19 parts of manganese with a manganese content of 99.7% and a particle size of ≤80 mesh, and 7 parts of industrial silicon with a silicon content of 99.8% and a particle size of ≤80 mesh, the aforementioned After the raw materials are dry-mixed evenly, add 2 to 3% water glass solution of the total mass of the aforementioned total raw materials as a binder for wet mixing, press the wet-mixed uniform raw materials into a block of 100mm×230mm×100mm, and then The material block is placed on the feeding car and sent to the...

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Abstract

The invention relates to a microwave synthesis method of a Si-Mn-N alloy. In the method, 2.45GHz microwave is used as a heat source, and silicoferrite, manganese metal and industrial silicon are used as raw materials; if the mass sum of the dry raw materials is 100 74 parts of silicon content 75-77% of silicoferrite, 19 parts of manganese conten 97.9% of manganese metaland 7 parts of silicon conten 99.8% of industrial silicon, and the granularity is not more than 80 meshes. The method comprises the steps of: mixing the raw materials in a dry mode; adding sodium silicate solution which accounts for 2-3% of the total amount of the raw materials and blending in a wet mode; pressing the mixture into blocks of 100mm*230mm*100mm, placing the blocks on a slip car, and drying in a dry kiln; after drying, placing the blocks on a push plate used for a microwave tunnel kiln; pushing the push plate into the microwave tunnel kiln at a speed of 4.5m / h continuously, and introducing pure nitrogen into the kiln at a pressure of 0.01Mpa-0.02Mpa; and after preheating in a nitrogen atmosphere, continuously nitrogenizing the blocks at a high temperature of 950-1450 DEG C, sintering, cooling and taking out from the kiln to obtain the qualified Si-Mn-N alloy.

Description

technical field [0001] The invention relates to a method for synthesizing silicon-manganese nitride alloy at high temperature by using microwave as a heating heat source. Background technique [0002] The main substances in silicon manganese nitride alloy (Fe-SiMnN) are manganese nitride and silicon nitride. Manganese plays a role in deoxidation, desulfurization and alloying in steelmaking. The presence of manganese can eliminate or weaken the hot embrittlement caused by sulfur, thereby improving the hot workability of steel; manganese can refine pearlite grains and improve the strength of pearlite steel, and can also improve the hardenability of steel. Silicon nitride has high temperature thermal stability, thermal shock resistance, thermal shock resistance, chemical stability, good electrical insulation and hardness. Silicon manganese nitride is compatible with the special properties of manganese nitride and silicon nitride, and its performance is even more superior when...

Claims

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Application Information

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Patent Type & Authority Applications(China)
IPC IPC(8): C22C29/16C22C1/00
Inventor 唐玉鹏刘福东孙岩铎柏森高辉高海军朱宏伟李志峰张喜瑞刘德明崔贤
Owner SINOSTEEL JILIN FERROALLOYS
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