A kind of aluminum powder used in metallurgical industry and its manufacturing method

Abstract

The invention provides an aluminum powder used in the metallurgical industry and a manufacturing method thereof. The particle size range of the aluminum powder is that the nominal size is between 0.01mm and 1.0mm; the particle size deviation range is ±0.5% of the nominal size; the average hardness measured under load is 65HV±5HV; the hardness deviation range is ±5HV . The manufacturing method of the aluminum powder includes: material selection, melting, heat preservation, titration, pressure crushing, cooling, drying and screening. Compared with the prior art, the method for producing aluminum powder provided by the present invention adopts the method of dripping molten aluminum liquid under a certain pressure into a pressure crushing device at a certain speed through a special titration plate, and dripping into the pressure crushing device. The titrant in the crushing device is crushed by the *air curtain arranged in the pressure crushing device. Thereby making aluminum powder. The aluminum powder produced by the method has small particle size deviation and uniform hardness; and the method can improve the working environment, reduce safety risks, and save raw material costs.

Description

[0001] 【Technical field】 [0002] 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. [0003] 【Background technique】 [0004] At present, most of the metal aluminum powders used in the metallurgical industry as additives, reducing agents, and degassing agents are made by mechanical crushing and grinding. 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 harsh working environment, high safety risk, and waste of raw materials. [0005] 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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