Powder quality improving method based on EIGA technology

By combining multiple sets of rod feeding mechanisms with the preheating linkage of induction coils and ultrasonic rotation devices, the problems of large gas consumption, poor powder quality, and production continuity in EIGA atomization technology have been solved, achieving efficient and stable powder preparation and performance improvement.

CN120885694APending Publication Date: 2025-11-04SUZHOU AMPRO LTD
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Patent Information

Application Number
CN202511035034.9
Authority / Receiving Office
CN · China
Patent Type
Applications(China)
Current Assignee / Owner
Filing Date
2025-07-25
Publication Date
2025-11-04

AI Technical Summary

Technical Problem

Existing EIGA atomization technology suffers from problems such as high gas consumption, poor powder quality, low fine powder rate, and poor production continuity, resulting in high preparation costs, poor powder performance, and low production efficiency.

Method used

By employing a multi-group rod feeding mechanism and a preheating linkage mechanism with induction coils, combined with an ultrasonic rotating device and centrifugal force, and through inert gas protection and continuous production mode, efficient powder preparation is achieved. This includes equipment pretreatment, preheating of the multi-group rod feeding mechanism, use of the ultrasonic rotating device, and a dual powder crushing process.

Benefits of technology

It enables continuous powder production, reduces gas consumption costs, improves powder sphericity and fine powder ratio, and enhances powder density and stability, meeting the needs of high-precision 3D printing.

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Abstract

The invention discloses a powder quality improving method based on an EIGA technology. The method comprises the following steps that S1, oxygen in equipment is emptied, and inert gas is filled; s2, multiple sets of bar feeding mechanisms and corresponding induction coils are adopted, and in the atomization process of the previous set of metal bars, the next set of metal bars is preheated at low power; s3, after the atomization of the previous group of bars is finished, the next group of preheated bars are automatically fed and atomized; s4, an ultrasonic rotating device is arranged in the atomization area, and the atomized metal liquid column freely falls onto the ultrasonic rotating device after being heated by the induction coil; s5, primary vacuum breaking is completed, secondary breaking is achieved through high-speed centrifugal force after a rotating disc is contacted, and meanwhile an ultrasonic vibrator is started to enhance the breaking effect and liquid drop spheroidization; s6, collecting and storing the spheroidized powder; the continuous production is realized, the efficiency is improved, the sphericity degree is obviously improved, and the flowability is improved; and the hollow rate of the powder is greatly reduced, the high-precision 3D printing requirement is met, and the powder quality is greatly optimized.
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