Apparatus and method for hard facing a substrate
AssigneeCutting & Wear Resistant Developments Limited
InventorsMark Russell, Andy Ollerenshaw, Sureshkumar Venkatachalam
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Abstract
The present invention relates to inserts for hard facing substrates, and a method for hard facing substrates. An insert according to an embodiment of the present invention may comprise a body of ultra-hard material having a welding node located on a first surface thereof and at least one wire electrically connecting the first surface to a second, opposite, surface. In use, the inserts may be temporarily connected to a substrate by applying a resistance welding electrode to the welding node, thereby causing the wires on the second surface to melt and weld the insert to the substrate. A subsequent brazing step may firmly attach the inserts to the substrate.
Claims14
An insert for hard facing a wear surface of a substrate, said insert comprising:
- i) an ultra-hard body in a geometric shape comprising a first substantially planar surface and a second substantially planar surface opposite said first substantially planar surface;
- ii) a welding node located on the second substantially planar surface;
- iii at least a first wire having a first portion and a second portion, wherein the first and second portions are each located proximal said welding node and wherein the first wire is at least partially wrapped around the body, such that the wire at least partially traverses the first substantially planar surface;
- and
- iv) a boundary coating on the ultra-hard body for rendering the body wettable by a braze material.
Dependencies are inferred from the claim text.