Wear resistant mixer paddle for use with abrasive slurries
AssigneeUnited States Gypsum Company
InventorDavid Russell BLACKBURN
Life of this patent
Estimating the term…
Abstract
A mixer paddle for use in producing abrasive slurries is provided. Included on the mixer paddle is a tapered body with a first tip and an opposite second tip; each tip having a wear zone and a recess formed in the wear zone. A Tungsten Carbide tile is fastened in each wear zone. An exterior surface of the body has hardfacing applied, and the hardfacing is smoothed after application by electronic discharge machining.
Claims11
A mixer paddle for use in producing abrasive slurries, said paddle comprising:
- a tapered body with a first tip and an opposite second tip;
- each said tip having a wear zone, and a recess formed in said wear zone;
- an exterior surface of said body having hardfacing applied;
- said hardfacing being smoothed after application by electronic discharge machining;
- and
- a Tungsten Carbide tile fastened in each said wear zone.
A mixer paddle for use in producing abrasive slurries, said mixer paddle comprising:
- a tapered body with a first tip and an opposite second tip;
- each said tip having a wear zone, and a recess formed in said wear zone;
- an exterior surface of said body having hardfacing applied;
- said hardfacing being smoothed by electronic discharge machining, to have an Ra value of 125 micro-inches (3.2 μm), and a Wt value of 0.010 inches (0.025 cm);
- and
- a Tungsten Carbide tile fastened in each said wear zone, said tile having a thickness of approximately 1/16 inch.
A method of making a CP mixer paddle for use with abrasive slurries, comprising the steps of:
- providing a mixer paddle with a tapered body including a first tip and an opposite second tip;
- each said tip having a wear zone, and forming a recess said wear zone;
- applying hardfacing to an exterior surface of said body;
- smoothing said hardfacing by electronic discharge machining;
- and
- fastening a Tungsten Carbide tile in each said wear zone.
Dependencies are inferred from the claim text.