Aluminum powder for metallurgical industry and preparing method thereof

Abstract

The invention provides aluminum powder for the metallurgical industry and a preparing method of the aluminum powder. The particle size range of the aluminum powder is the nominal size from 0.01mm to 1.0mm. The particle deviation range of the aluminum powder is + / -0.5% of the nominal size. The average rigidity determined under loads is 65HV+ / -5HV. The rigidity deviation range of the aluminum powder is + / -5HV. The preparing method of the aluminum powder includes the steps of material selecting, melting, heat preservation, titration, pressure breaking, cooling, drying and screening. Compared with the prior art, the preparing method of the aluminum powder has the advantages that melted aluminum liquid is dropped into a pressure breaking device through a specific titration disc at the certain speed under the certain pressure, a titration solution dropped into the pressure breaking device is broken through a gas curtain arranged in the pressure breaking device, and therefore the aluminum powder is prepared. The aluminum powder prepared through the preparing method is small in particle deviation and even in rigidity, and the preparing method can improve the working environment, reduce the safety risks and save the raw material cost.

Description

【Technical field】 [0001] The invention relates to a metal product and a manufacturing method thereof, in particular to an aluminum powder used in the metallurgical industry and a manufacturing method thereof. 【Background technique】 [0002] At present, most of the metal aluminum powders used as additives, reducing agents and degassing agents in the metallurgical industry are produced by mechanical pulverization and grinding. Due to the limitation of mechanical conditions, the aluminum powder produced by this method cannot be well guaranteed in particle size requirements, and the deviation is large; at the same time, due to the effect of machinery, its hardness range is also large and uneven. Especially in the production process of aluminum powder made by the above method, a large amount of dust and dry noise will be generated, resulting in such defects as harsh working environment, high safety risk, and waste of raw materials. [0003] Therefore, it is necessary to provide ...

AI Technical Summary

Problems solved by technology

Due to the limitation of mechanical conditions, the aluminum powder produced by this method cannot be well guaranteed in terms of particle size, and the deviation is large; at the same time, due to the mechanical effect, its hardness range is also large and uneven.

Especially in the production process of aluminum powder made by the above method, a large amount of dust and dry noise will be generated, resulting in defects such as bad working environment, high safety risk, waste of raw materials, etc.

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