Abstract: A screen cloth for use in a screening device for screening out oversize objects in a material flowing in a direction is provided, comprising a metal plate having a perimeter and comprising a plurality of openings therethrough and forming a grid having longitudinal ligaments substantially parallel to the direction of the material flow and transverse ligaments substantially perpendicular to the direction of the material flow, the metal plate having an impact surface and a bottom surface; a coating or liner comprising an elastomer, coating or lining at least the impact surface of the metal plate or a portion thereof; and a wear material at least partially embedded into the elastomer coating or liner, or a portion thereof.

Abstract: In one aspect, a method for manufacturing a part for a centrifugal slurry pump is provided, comprising: forming a skeleton of the part having an outer dimension smaller than the part; placing the skeleton of the part in a metal enclosure having an interior dimension larger than the outer dimension of the skeleton of the part and thereby forming a space; adding a metal matrix composite powder into the metal enclosure to fill the space; and subjecting the metal enclosure to hot isostatic pressing, thereby allowing bonding of the metal matrix composite to the skeleton of the part to form the part.

Abstract: A planar screen cloth for use in a screening device for screening out oversize objects in a material flowing in a direction includes a metal plate substructure having a perimeter and a plurality of longitudinal ligaments and transverse ligaments, forming a grid. A wear-resistant layer is applied to the entire screen cloth. Each transverse ligament comprises a leading edge and a trailing edge; and is angled such that the leading edge is disposed below the trailing edge. The transverse element thus is angled to face the direction of material flow.

Abstract: A screen cloth for use in a screening device for screening out oversize objects in a material flowing in a direction is provided, comprising a metal plate having a perimeter and comprising a plurality of openings therethrough and forming a grid having longitudinal ligaments substantially parallel to the direction of the material flow and transverse ligaments substantially perpendicular to the direction of the material flow, the metal plate having an impact surface and a bottom surface; a coating or liner comprising an elastomer, coating or lining at least the impact surface of the metal plate or a portion thereof; and a wear material at least partially embedded into the elastomer coating or liner, or a portion thereof.

Abstract: In one aspect, a method for manufacturing a part for a centrifugal slurry pump is provided, comprising: forming a skeleton of the part having an outer dimension smaller than the part; placing the skeleton of the part in a metal enclosure having an interior dimension larger than the outer dimension of the skeleton of the part and thereby forming a space; adding a metal matrix composite powder into the metal enclosure to fill the space; and subjecting the metal enclosure to hot isostatic pressing, thereby allowing bonding of the metal matrix composite to the skeleton of the part to form the part.

Abstract: A improved impeller for use in a centrifugal slurry pump is provided, comprising: a top shroud; a bottom shroud; and a middle portion therebetween, said middle portion having at least one substantially vertical wall defining a slurry flow channel, wherein the top shroud, bottom shroud and middle portion are configured as one piece to together define a first unitary body; at least one vane nose positioned at a leading edge of the at least one substantially vertical wall; and, optionally, a retaining ring mounted over the top shroud to secure the vane nose within the body.