Process for the preparation of spherical granules resistant and reactive metals and alloys, DEVICE FOR IMPLEMENTATION AND DEVICE FOR MANUFACTURING Consumable INITIAL PREPARATIONS FOR THE IMPLEMENTATION OF THE METHOD

摘要

1. A method for producing spherical granules refractory or reactive metals and alloys, including initial fabrication consumed preform in the form of a metal rod, its installation in a holder with the possibility of longitudinal movement, the excitation of the plasma arc to melt the billet of the original consumable plasma arc method with a plasma gas supply, getting melt averaging the chemical composition of the resulting melt and purifying it from the refractory inclusions direction melt in a crucible rotating variable speed, and spraying the melt by centrifugal force to form detached from the edge of the crucible spherical granules predetermined size, characterized in that the average chemical composition of the melt purification from refractory inclusions provided by making the original consumable preform by vacuum plasma melting in scull furnace and a plasma arc to melt the workpiece is excited between the plasma torch disposed at an angle β to the axis of rotation of the crucible, and the crucible to form a pl azmennogo torch, the original consumable preform is placed in a flame coverage area directly above the rotating crucible and carry its longitudinal feed while rotating, and for the edge of the crucible is chosen material provides a reduction in contact angle edge of the liquid melt and surface tension forces holding the drop on the surface while rotating the crucible edge; carried in the melting process control flow of plasma gas, electric arc power supply and the reference speed