دراسة سلوكية الشحم الليثيومي في الحالة الراكدة

Abstract EN

The study was carried out on the lithium Lubricants in the molten state under the effect of tempearture, shear stress (τ), and shear rate (γ) by using capillary viscometer, the corrections have been done to expermintal data.

It was found from the obtained results that, real viscosity ηc decreased with increasing real shear rate (γc).

Also it was found that the lithium Lubricants is a pseudoplastic material (n<1).

For determining viscous activation energy at constant shear stress (Eτ), the relationship between real viscosity (ηc) and (1/T) was studied.

It was found that the viscous activation energy increased with increasing all of shear stress, where the value of viscous activation energy reflectes the temperature– sensitivity of real viscosity.

The time residence (tr) of lithium Lubricants in the die was determined, and it was found that Lubricant jittery deforms during flow, because the magma cannot maintain the flow of goods during the run at.