Atomization preparation device for TiAl powder

Abstract

The invention discloses an atomization preparation device for TiAl powder. The atomization preparation device comprises a furnace body, a smelting chamber, an atomization chamber and a collection chamber. The bottom of a smelting chamber crucible is connected to a liquid storage bag through a flow guide pipe. The bottom of the liquid storage bag is connected with a centrifugal nozzle through a flow guide pipe. The centrifugal nozzle is in a disc shape and is 10 cm in diameter. Four liquid discharge outlets are formed in the outer side of the centrifugal nozzle symmetrically and are 3 cm in diameter. The open direction of the liquid discharge outlets is the normal direction of the disc. A pulse-pressuring gas pipe is arranged above the centrifugal nozzle and is connected with a gas source. A control system controls the gas source to conduct pulse type pressuring on melt in the centrifugal nozzle. Four inert gas nozzles are arranged around the centrifugal nozzle correspondingly. The direction of the inert gas nozzles directly faces the throwing-out direction of melt at the liquid discharge outlets during rotation of the centrifugal nozzle. The collection chamber is arranged below the atomization chamber and is internally provided with a cyclone separator and an ultrasonic vibrating screen. Through the atomization preparation device, the crushing effect is improved, and the uniformity of powder is improved.

Description

technical field [0001] The invention belongs to the technical field of material processing, and in particular relates to an atomization preparation device of TiAl powder. Background technique [0002] Titanium alloy has low density, high strength, high hardness, strong high temperature resistance, high corrosion resistance and friction resistance, especially TiAl intermetallic compound because of its high specific strength, high specific stiffness, corrosion resistance, wear resistance and high temperature resistance As well as excellent oxidation resistance and other advantages, it is becoming one of the excellent candidate structural materials in the contemporary aerospace industry, civil industry and other fields, especially in the field of aeroengine blades, which has broad application prospects. 3D printing, or additive manufacturing, is a rapid prototyping process that has emerged in recent years. It adopts layer-by-layer powder coating, laser or electron beam melting ...

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Problems solved by technology

Part of the more advanced technology uses the centrifugal method to atomize the melt after being thrown out. In the process of using centrifugal throwing, the inventor has found through research that the blowing speed and angle of the gas in the atomization process after the melt is thrown out, the liquid The direction of the flow has an impact on the effect of atomization and the particle size of the powder after atomization, but the current centrifugal process adopts the method of blowing air after continuous centrifugation, which makes the particle size distribution of the prepared powder uneven

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