Capital supplies Unibore systems to improve the bottom pouring of ladles.
Capital Refractories’ Unibore nozzle system has been developed to complement Multicast – the proven reusable stopper system.
This unique two component system consists of a re-usable outer nozzle and an inner nozzle, which is available in a wide range of bore diameters.
This offers a new method of changing the diameter of the nozzles after each cast by replacing the inner part of the nozzle only.
Unibore's unique two-piece nozzle is fundamentally different to conventional one-piece nozzles.
Major Differences of Unibore Compared to a Standard Nozzle:
Unique Selling Points:
In addition to the nozzle diameter flexibility, there are potential technical benefits in converting to the system. The large opening of the outer section reduces drag from the stopper and nozzle reducing flow rate fall off. Customer tests have also shown that mould washing is reduced dramatically, because of a reduction in vortexing and flaring from the tapered design of the inner nozzle. This can result in an improvement in quality and a reduction in rework of castings.
Due to the reduced drag of metal through Unibore, metal flow rates are higher than with conventional nozzles. Thus in order to achieve similar flow rates, a smaller diameter inner nozzle is usually employed.
Unibore is available with a wide range of bore sizes from 25 to 100 mm.