Industrial technology for producing iron powder at the Brovarsk Powder Metals Factory

Conclusions

The factory completed the following work in developing the industrial technology for making iron powder, proposed by the Institute of Materials Physics of the Academy of Sciences, UkrSSR.

• 1) We developed drying and grinding cycles for the scale, as well as cycles for mixing and controlling the batch, and also the optimum cycles for grinding the sponge into powder, ensuring high technological characteristics (densification, poured weight), corresponding to the requirements of GOST 9849-61 for iron powders, and GOST 10937-64 for the pressability of iron powders;

• 2) we selected reducing cycles which ensured the industrial production of high grade iron powder in terms of chemical composition, according to GOST 9849-61.

The conditions for reducing the batch and grinding the reduced sponge predetermine the high technological properties of the iron powder; surface roughness, sponge form of the particles, the absence of buttons, which in turn lead to excellent moldability and the absence of segregation of graphite during the pressing of iron-graphite mixtures with this iron powder as the basis.