experimental tests have been performed
on the ball bearings lubricated with grease and the trends in the
amount of erosion affected by the contamination of the grease were
determined. The contaminant concentration as well as the particle
size is varied.
This paper aims at studying the influence of gangue aiid researching in the
theoretical empirical methods in order to limit the formation of such gangue
during the manufacture of steel. Gangues are divided to acids, sulfate and
compound gangue. Su
ch gangues are known for their bad influence on the
mechanical characteristics of steel. Experiments have proved that the
influence of Sulfur gangue especially FeS is worse than that of acids, as the
melting point is 880t. Such gangue form capillary ducts within steel, thus
there will be internal micro cleaves and stress points that will lead to
collapse and break when the metal is exposed to stress less than the flowing
point which is considered within the allowed stress values.