Fracture resistant carbide snowplow and grader blades

Details Fracture resistant carbide snowplow and grader blades Fracture resistant carbide snowplow and grader blades

E - Fixed Constructions

02

F

E02F 3/815 (2006.01) A01B 15/02 (2006.01) E01H 5/06 (2006.01)

Patent

CA 2424704

The present invention provides for carbide edge snowplow and grader blades that are durable and fracture resistant. The carbide along the blade edge and blade bottom which contacts the surface being treated is designed to limit the degree of fracture of the carbide. Carbide inserts along the edge and/or bottom are separated from each other by a steel alloy spacer/shim along the width of the blade. The spacer/shim reduces the potential for impact damage cracks that form in a carbide insert from propagating into adjacent inserts along the width of the blade. In one embodiment, the improved blade edge comprises an edge body having a lower edge with a recess and separate slot in the bottom surface of the edge. Within the blade recess and blade slot are positioned carbide block/bar inserts separated by spacer means made from a ductile material.

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