Composite metal component and method of producing same

A slurry pump impeller including a back shroud with an inner main face with an outer peripheral edge and a central axis, a plurality of pumping vanes extending away from the inner main face of the back shroud, the pumping vanes being disposed in spaced apart relation, each pumping vane including opposed main side faces, a leading edge in a region of the central axis and a trailing edge in a region of the outer peripheral edge of the back shroud with a passageway between adjacent pumping vanes, wherein the pumping vanes include one or more cavities located within a body portion of the pumping vanes, the one or more cavities each including an opening located in a top surface of the plurality of pumping vanes between the opposed main side faces and remote from the back shroud and extending through the body portion of each of the plurality of pumping vanes from the opening towards the back shroud, and wherein a wear resistant composition is bonded at least partially within the one or more cavities.

A slurry pump impeller comprising a main body portion including a back shroud with an inner main face, with an outer peripheral edge and a central axis, a plurality of pumping vanes extending away from the inner main face of the back shroud, the pumping vanes being disposed in spaced apart relation, each pumping vane including opposed main side faces, a leading edge in a region of the central axis and a trailing edge in a region of the outer peripheral edge of the back shroud with a passageway between adjacent pumping vanes,

• wherein the main body portion is composed of a host metal composition and includes one or more cavities located therein, the one or more cavities including a wear resistant composition bonded therewithin,
• wherein the wear resistant composition is encased within the main body portion of the impeller whereby working surfaces of the impeller, including the surfaces of the pumping vanes, the leading edge of the pumping vanes and the passageways, are composed of the host metal composition without inclusion of the wear resistant composition, and wherein the wear resistant composition has wear resistance which exceeds that of the host metal composition.

A pump liner for a centrifugal slurry pump, the pump liner comprising a main body portion including a main pumping chamber having an inlet opening for an introduction of flow of material into the main pumping chamber during use, a discharge outlet extending from the main pumping chamber and arranged for an exit of a flow of material from the main pumping chamber during use, and a transition surface extending between an inner peripheral surface of the main pumping chamber and an inner peripheral surface of the discharge outlet, the transition surface including a cutwater arranged for separating an in use exit flow of material in the discharge outlet from an in use recirculation flow of material in the main pumping chamber;

• wherein the main body portion is composed of a host metal composition and includes one or more cavities located therein, the one or more cavities including a wear resistant composition bonded therewithin,
• wherein the wear resistant composition is encased within the main body portion of the pump liner whereby working surfaces of the pump liner including the surfaces of the main pumping chamber, transition surface and cutwater are composed of the host metal composition without inclusion of the wear resistant composition, and wherein the wear resistant composition has wear resistance which exceeds that of the host metal composition.