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Title: Atomizer with liquid spray quenching

Abstract

Method and apparatus for making metallic powder particles wherein a metallic melt is atomized by a rotating disk or other atomizer at an atomizing location in a manner to form molten droplets moving in a direction away from said atomizing location. The atomized droplets pass through a series of thin liquid quenching sheets disposed in succession about the atomizing location with each successive quenching sheet being at an increasing distance from the atomizing location. The atomized droplets are incrementally cooled and optionally passivated as they pass through the series of liquid quenching sheets without distorting the atomized droplets from their generally spherical shape. The atomized, cooled droplets can be received in a chamber having a collection wall disposed outwardly of the series of liquid quenching sheets. A liquid quenchant can be flowed proximate the chamber wall to carry the cooled atomized droplets to a collection chamber where atomized powder particles and the liquid quenchant are separated such that the liquid quenchant can be recycled.

Inventors:
 [1];  [1];  [1]
  1. Ames, IA
Issue Date:
Research Org.:
Ames Lab., Ames, IA (United States); Iowa State Univ., Ames, IA (United States)
OSTI Identifier:
871467
Patent Number(s):
5738705
Application Number:
08/560,711
Assignee:
Iowa State University Research Foundation, Inc. (Ames, IA)
Patent Classifications (CPCs):
B - PERFORMING OPERATIONS B22 - CASTING B22F - WORKING METALLIC POWDER
DOE Contract Number:  
W-7405-ENG-82
Resource Type:
Patent
Country of Publication:
United States
Language:
English
Subject:
atomizer; liquid; spray; quenching; method; apparatus; metallic; powder; particles; melt; atomized; rotating; disk; atomizing; location; manner; form; molten; droplets; moving; direction; pass; series; sheets; disposed; succession; successive; sheet; increasing; distance; incrementally; cooled; optionally; passivated; distorting; spherical; shape; received; chamber; collection; wall; outwardly; quenchant; flowed; proximate; carry; separated; recycled; atomizing location; metallic melt; atomized powder; spherical shape; powder particles; collection chamber; chamber wall; atomized droplets; metallic powder; rotating disk; wall disposed; molten droplets; sheets disposed; form molten; /75/

Citation Formats

Anderson, Iver E, Osborne, Matthew G, and Terpstra, Robert L. Atomizer with liquid spray quenching. United States: N. p., 1998. Web.
Anderson, Iver E, Osborne, Matthew G, & Terpstra, Robert L. Atomizer with liquid spray quenching. United States.
Anderson, Iver E, Osborne, Matthew G, and Terpstra, Robert L. Tue . "Atomizer with liquid spray quenching". United States. https://www.osti.gov/servlets/purl/871467.
@article{osti_871467,
title = {Atomizer with liquid spray quenching},
author = {Anderson, Iver E and Osborne, Matthew G and Terpstra, Robert L},
abstractNote = {Method and apparatus for making metallic powder particles wherein a metallic melt is atomized by a rotating disk or other atomizer at an atomizing location in a manner to form molten droplets moving in a direction away from said atomizing location. The atomized droplets pass through a series of thin liquid quenching sheets disposed in succession about the atomizing location with each successive quenching sheet being at an increasing distance from the atomizing location. The atomized droplets are incrementally cooled and optionally passivated as they pass through the series of liquid quenching sheets without distorting the atomized droplets from their generally spherical shape. The atomized, cooled droplets can be received in a chamber having a collection wall disposed outwardly of the series of liquid quenching sheets. A liquid quenchant can be flowed proximate the chamber wall to carry the cooled atomized droplets to a collection chamber where atomized powder particles and the liquid quenchant are separated such that the liquid quenchant can be recycled.},
doi = {},
journal = {},
number = ,
volume = ,
place = {United States},
year = {1998},
month = {4}
}

Patent:

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