Open AccessTheoretical considerations regarding upward velocity of graphite spherical particles in pure aluminum during melting
Author(s) -
Hazim F. Hassan,
Muoori Ismael,
Gigel Neagu,
Florin Ştefănescu,
Mihai Chişamera
Publication year - 2019
Publication title -
iop conference series. materials science and engineering
Language(s) - English
Resource type - Journals
eISSN - 1757-899X
pISSN - 1757-8981
DOI - 10.1088/1757-899x/518/3/032011
Subject(s) - graphite , materials science , aluminium , composite material , fineness , particle (ecology) , viscosity , phase (matter) , mechanics , chemistry , physics , geology , oceanography , organic chemistry
The paper presents some theoretical aspects regarding the upward velocity of particles in the cast aluminum - graphite composites. Many types of particles are used to analyze the influence of shape factor on upward velocity in aluminum melts. The calculations were made by using modified Stokes’ equation for different Reynolds number attached to graphite particles. At temperature 700-900°C the upward velocity increases about 8.5%. The viscosity of multiphase fluids depends on many factors such as: the properties of aluminum melt and complementary material; temperature of the metallic bath; concentration, shape, fineness of graphite particles and degree of agglomeration of the dispersed phase.