Authors: Yu.M. Vernigorov, V.A. Lebedev, A.A. Shirin

Title of the article: Express method for estimating the granulometric composition of powders of ferromagnetic materials

Year: 2020, Issue: 4, Pages: 25-29

Branch of knowledge: 05.02.09 Technologies and machines for pressure working

Index UDK: 621.91.01

DOI: 10.26730/1999-4125-2020-4-25-29

Abstract: Powder metallurgy technologies play a special role in the development of technologies for space, radio engineering, automotive and other industries that save energy and materials.the Dispersed composition of the charge has a significant impact on the formation of the microstructure of powder products. High activity in the interaction of particles of ferromagnetic materials leads to the formation of clusters with a crystallographic orientation of the particles, which contributes to abnormal grain growth during sintering. The size of the clusters changes when the powder is placed in a force field: electrostatic, vibrational, acoustic, electromagnetic, etc. In contrast to other force fields, the electromagnetic field can weigh particles whose size is tenths of a micron or higher.
To estimate the absolute size of particles and clusters of powder, a sieve separation was performed in the magnetovibrating layer at the same parameters of the electromagnetic field as when measuring the optical density of the magnetovibrating layer.

Key words: magnitofonov technology a ferromagnetic material the spectrophotometer the absorption of light

Receiving date: 27.07.2020

Publication date: 30.10.2020

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