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Segregation of metal powders

Segregation of metal powders

Kulkarni, P.A., Bradley, M.S.A. and Farnish, R.J. (2005) Segregation of metal powders. In: Euro PM 2005: Powder Metallurgy Congress and Exhibition. European Powder Metallurgy Association (EPMA), Prague, Czech Republic, pp. 61-66. ISBN 9781899072187

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Abstract

Experiments have been undertaken using a lubricated iron alloy powder to analyse rolling segregation using a novel bench size segregation tester. Bulk particulates charcaterised by small particle sizes, narrow size distributions, free-flowing natures, high particle densities and high inter-particle forces of attraction; necessitate the use of a very careful experimental procedure to obtain repeatable results. A 16 cup spinning riffler has been used to obtain representative samples and dry sieving has been used to obtain particle size distributions. The effect of height of discharge on surface effect segregation within the heap has also been analysed for an iron alloy powder. Close tolerances in powder quality are necessary for efficient production, and control of these tolerances can only be achieved by detailed analysis of materials and processes. The quantification and identification of segregation effects has been a challenge, especially in the field of powder metallurgy. This study attempts to quantify segregation and is considered as a first step towards the prediction of segregation behaviour for general powders.

Item Type: Conference Proceedings
Title of Proceedings: Euro PM 2005: Powder Metallurgy Congress and Exhibition
Uncontrolled Keywords: iron alloys, particle size, powder metallurgy, powder metals, quality control, rolling, size distribution, surface segregation, experimental procedure, interparticle force, materials and process, narrow size distributions, particle densities, representative sample, segregation effects, small particle size, segregation (metallography)
Subjects: T Technology > T Technology (General)
Faculty / Department / Research Group: Faculty of Engineering & Science
Faculty of Engineering & Science > Wolfson Centre for Bulk Solids Handling Technology
Related URLs:
Last Modified: 17 Oct 2016 10:03
Selected for GREAT 2016: None
Selected for GREAT 2017: None
Selected for GREAT 2018: None
URI: http://gala.gre.ac.uk/id/eprint/12674

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