Volume SH 6: Part
1 Minimisation of Wear in Slurry Systems
This part
forms of a design guide focused on wear minimisation.
The likely wear mechanisms present in slurry systems,
abrasion, solid particle erosion and cavitation, are
described and the key operating parameters which influence
the wear rates caused by each mechanism are identified.
These key parameters are used to develop a design guide
philosophy such that wear can be minimised through the
basic understanding of the fundamental processes present.
The wear
resistance of a wide range of materials, determined
by laboratory techniques, against abrasion (two and
three body), solid particle erosion and cavitation erosion
are detailed. Comparative wear performance results are
covered in some detail for steels, Stellites, hard metals
(Cemented tungsten carbides), advanced ceramics, advanced
coating technologies and plastics. Guidance is given
as to the possible selection criteria which takes into
account a range of service conditions to which the equipment
under design could be subjected.
Design
implications of minimising wear of pumps, valves, pipe
bends and pipelines are discussed and case histories
are presented to illustrate the points raised in the
guide. The current predictive equations for slurry erosion
are reviewed to allow the designer to calculate approximate
wear rates in pipeline systems. The limitations of the
use of such equations are also highlighted. A list of
wear resistant materials and coating/surface engineering
companies is given with their associated product range.
Volume SH 6: Part 2 Wear
in Slurry Systems
To be issued.
