Hard machining - Import export

This modern machining technology offers a host of advantages over more conventional processes. STEEC makes available to its customers its know-how in micro drilling by spark erosion. The principle of this machining process is the same as for wire spark erosion, except that the tool used for cutting is no longer a wire but an electrode shaped according to the precision machining require. The part and the tool (electrode) are not therefore in contact with each other, in fact it is an electric arc formed between the electrode and the part that will machine the latter. This is also called sparking. The part must be necessarily be conducting to be able to be machined by this method and it is prerequisite for using this method. This absence of contact between the tool and the part makes it possible to machine very hard materials such as titanium for example.

Drillstar PDC hole opener is a reliable solution for hole enlarging in both medium and hard formations. The body is machined out of a single block of heat treated AISI 4145H alloy steel. The three PDC arms are held in place by oversized locking pins. The unique design of the body ensures maximum strength and durability. It can withstand loads far beyond those involved during normal drilling operations. Cutting arms are fitted with two rows of PDC. During drilling, load is transferred directly from the arms to the body. No stress is sustained by the pins, substantially reducing the risk of losing parts downhole. Optimum cleaning is ensured by nozzles positioned below each cutting arm. Different sizes of arms can be adapted to the same body: for example the 9 1/2" OD body can be fitted with optional arms to enlarge up to 22" or 26". Special sizes of body and arms are available on request.

For forming and machining operations on hard steels and aluminium alloys.MARTOL SOLUBLE ST has been homologated by RENAULT S.A., as a forming oil under its experimental number of PX 3390.