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US 4,944,559 AGranted
Tool for a mine working machine comprising a diamond-charged abrasive component
AssigneeSociete Industrielle de Combustible Nucleaire
InventorsJean Sionnet, Paul A. Renard
Life of this patent
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Abstract
The body (1) of the tool consists of a single-piece steel component. The housing (3) for the composite abrasive component (2) is provided in this steel component. The working surface (5) of the body (1) has, at least in its component-holder part (5a), and angle at the lower vertex of at least 20% with respect to the angle at the vertex of the corresponding part (8a) of a metallic carbide tool for working the same rock. The surface (5a) of the component holder (4) is at least partially covered by an erosion layer (10) of hard material.
Claims15
A tool for a mine working machine comprising:
- a single piece steel component body comprising a rear part for enabling said rear part to be mounted into a tool support of the working machine and a front working part provided with a housing and limited by an external working surface of overall frustoconical shape surrounding the housing and corresponding substantially to an equilibrium erosion profile of the tool in its working conditions, the external working surfacing being at least partially covered with an erosion layer of a material whose hardness is greater than that of the steel forming the body;
- and
- a composite abrasive component directly fixed in the housing of the steel body, said composite abrasive component consisting of a metallic carbide slug integrally bonded to a polycrystal diamond active part having one end thereof projecting from the body.
Dependencies are inferred from the claim text.