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Capital Refractories has introduced their patented Multicast system for use in ladles with a re-usable lining. This utilises a re-usable isostatically pressed graphitised alumina stopper rod, which typically lasts a minimum of around 10 fills - depending on alloy and temperature. The stopper-rod requires setting only once, resulting in a considerable saving in labour. A disposable fibre gasket (patented) is employed to prevent sticking and leaking. Figure 1 compares the two ladle systems.The Multicast system requires the use of a re-usable chemically bonded high alumina nozzle. The deterioration of the nozzle means that typically, depending on alloy, a nozzle with the Multicast system can be expected to last a minimum of 5 fills before it needs replacing. At this time, the selection of the...
Capital Refractories' patented Unibore nozzle system has been developed and introduced to complement Multicast - the proven reusable stopper system. This unique two component system consists of a re-usable outer nozzle and a second inner nozzle, which is available with a range of bore diameters; a fibre gasket makes the seal between the two pieces. 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. There are two major differences. The first is that there is a much larger opening of the outer section of the nozzle compared to a standard nozzle. The second difference is the tapered design of the inner nozzle, which is ava...
Capital Refractories’ licensed and patented Unibore system, already proven in bottom pour ladles, has been further developed for use with Autopour systems. This unique system utilises a two part nozzle; an outer part which is re-useable and an inner part which offers a wide range of bore sizes. The outer nozzle remains as part of the refractory lining and is changed around once a week. The inner nozzle can be replaced with ease daily and enables the user to alter the bore size for each casting accordingly. The tapered nozzles are far less likely to block than the conventional parallel nozzle. The Unibore system enables a more stable and controllable metal flow and allows for a quicker turn-around of the pouring system. It is complemented by Multicast – Capital Refractories’ reusable stoppe...
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