Development of a dispenser for supplying fine particles

Oxide, carbide and nitride particles can be used for hardening the melt. The major advantage of this type of particles is their large number per unit volume, which largely determines the efficiency of the refinement of the crystal structure of materials. Intensive development of methods for the preparation of fine particles is accompanied by a significant reduction in the cost of their production. This fact is the basis for increasing the economic efficiency of the process of hardening of materials using fine particles. For a number of problems related to ensuring high levels of structural strength of products for critical applications, the discussed technology of particle introduction is economically feasible in the present circumstances. Thus the problem of hardening of materials in the implementation of casting processes is relevant and has both scientific and practical importance. Despite the importance of the particle inlet to the melt, the existing dispensing devices available at the market are presented mostly by foreign companies such as “ALL-FILL Incorporated” and “LAMBDA”. Their products have a high price and are difficult to use. As powder metallurgy is being actively developed, the need for powder dispensers increases, and therefore there is a need for a dispenser having low cost and ease of operation at the same dosing accuracy. This paper presents the development and implementation of a system of supply of fine particles into the melt.