Device for hot compression of a composite material containing diamonds or cubic boron nitride

摘要

The invention relates to the technique of obtaining materials of high hardness by means of compression. The device which is the subject of the invention is of the type comprising half-dies 1, between which is placed a container 3 equipped with a clamping element 4 enclosing its outer wall in the zone of interaction of the half-dies 1, the said container being equipped with a graphite sleeve 5 receiving the semi-finished product 6 made of composite material, arranged along the axis of the container 3, and at each slice (edge) of which is arranged an electrical connection element, and is characterised in that the outer wall (7) of the graphite sleeve 5 and the wall of the container 3 form an annular chamber in which is arranged a sleeve 9 made of a material containing at least one metal. The invention applies to powder metallurgy for the manufacture of materials used in tools for drilling, grinding, etc., which are subject to intense wear through abrasion. <IMAGE>