| FOSECO INTERNATIONAL LIMITED Patent applications |
| Patent application number | Title | Published |
|---|
| 20100294452 | Method of Producing Ductile Iron - The present invention relates to a process for the production of ductile iron comprising the sequential steps of:—(i) treating liquid iron with an initialiser comprising an effective amount of a group Ha metal other than Mg, (ii) at a predetermined time after step (i), treating the liquid iron with a magnesium containing nodulariser, (iii) treating the liquid iron with a eutectic graphite nucleation-inducing inoculant, and (iv) casting the iron. The invention allows for the variability of oxygen content in the base iron to be processed such that the mechanical properties of components cast from the processed iron are independent of the original oxygen content of the base iron. | 11-25-2010 |
| 20090152778 | Stopper Rod - A stopper rod for controlling the flow of molten steel from a tundish has a metal carrier element partly received in an internal passageway of the stopper rod, the carrier element compressing sealing means between a frustoconical undersurface of a laterally enlarged portion thereof and a complementary seating surface of the stopper rod passageway, there being an insert threadedly engaged with one of the carrier element and stopper rod body at a position above a laterally enlarged portion of the carrier element, with further sealing means disposed between said insert and the carrier element. Preferably the insert is a nut screwed down onto a washer which compresses the further sealing means. | 06-18-2009 |
| 20090123645 | Refractory articles - A process for making a filter suitable for filtering molten metal comprising (i) forming a slurry comprising (a) particles of a refractory material, (b) a binder and (c) a liquid carrier, (ii) coating a disposable former with a slurry, (iii) drying the coated former, (iv) optionally applying one or more additional coats of a refractory material and/or a binder, optionally with liquid carrier, and drying the one or more additional coats, and (v) firing the coated former to produce the filter, wherein the binder is a carbon rich source selected from one or more of the following classes of materials: pitches, tars and organic polymers that degrade to form carbon on pyrolysis. | 05-14-2009 |
| 20090008884 | Seal With Expandable Graphite - A seal, particularly for use with a ladle shroud in the casting of molten metal from a ladle, comprises an intumescent composition containing expandable graphite from which some, but not all, of interstitial water present therein has been removed. The interstitial water can be driven off from known expandable graphite by heating it to between approximately 230° C. and 280° C. for approximately 30 minutes. Once part of its interstitial water has been removed, the expandable graphite is used to produce the intumescent composition, which is then formed/shaped into the required seal. | 01-08-2009 |
