SU703239A1 - Nozzle for spraying molten metal - Google Patents

Description

(54) NOZZLE FOR SPRAYING LIQUID METAL

 - -I,.

The invention relates to powder metallurgy.

A known nozzle for dispensing a liquid metal, comprising a drain pipe and a gas collector with nozzles, the axes of the openings of which are angled to the axis of the drain pipe {a and made in the form of slots located in planes rotated relative to the axis of the drain pipe at an angle defined by the ratio

and arcSin ±,.

where d is the diameter of the output section | vnogo

nozzle,

C is the length of the slit in the exit section of the nozzle A is the amount of displacement of the axis of the slit of the nozzle relative to the axis of the discharge nozzle, and O D - 1.. The disadvantage of such a nozzle is insufficient development of the metal jet by the energy carrier, since nozzles made in the form of slots have the ability to rotate and fix only around their axes, which does not allow full use of the energy of the energy carrier and increase the output of small fractions.

The aim of the invention is to increase the flow of fines and reduce the energy intensity of the process.

To achieve this goal, a nozzle for spraying liquid metal has been proposed, containing a drain nozzle, a collector with nozzles, the axes of which are angled to the axis of the drain nozzle, which differs from the known one in that the nozzles are made with spherical heads with the possibility of changing the angle of attack of the energy carrier jet of liquid metal.

The drawing shows the proposed nozzle.

The nozzle consists of body 1, cover 2, which is assembled (collector 3. They have nozzles 4 on the body, in the slots of which are installed with the possibility of rotation and fixation by nuts 5 at an angle relative to the axis of the discharge nozzle 6, nozzle 7 with spherical heads 8 .

Claims (1)

The change in angle / 3 is made depending on the size of the spray chamber, the required fractional composition of the powder to be obtained, the performance of the nozzle, and the dispersed metal. The nozzle works as follows Flowing out of the metal reservoir through the drain pipe 6, a jet of liquid metal is once and ampoule the energy carrier flows into small droplets, which crystallize in its stream and transfer them to the powder receptacle (not shown in Fig.). “At the same time, the design features of the forcing make it possible to select the optimal direction of the energy carrier jets to the stream of liquid metal dispersed. . Using the proposed device contributes to the increase in the output of small tails, cue and energy consumption of the process. Invention Nozzle for the splitting of a liquid metal, comprising a drain nozzle, a manifold with nozzles, the axes of which are angled to the axis of the drain nozzle, characterized in that, in order to increase the yield of the fines and reduce the energy intensity of the process, the nozzles 1 with spherical heads with the ability to change the angle of attack of the energy carrier to the jet of liquid metal. Sources of information taken into account during the examination 1. USSR Author's Certificate No. 512799, cl. B 22 D 23/08, 1973.