VERTIKAL STRANGGUSSKOKILLE MIT AUFSATZ

PCT No. PCT/FR97/00545 Sec. 371 Date Jan. 25, 1999 Sec. 102(e) Date Jan. 25, 1999 PCT Filed Mar. 27, 1997 PCT Pub. No. WO97/37791 PCT Pub. Date Oct. 16, 1997The mold includes a cooled copper body 4 on top of which sits a refractory feed head 9 which itself consists of two separate components-a thermally insulating upper bush 16 and a bottom annulus 17 made of a stronger and more compact refractory which is surrounded by a crimping ring 18 narrower than the annulus, so that an edge of the annulus extends beyond each side of the ring. As the lower inner edge of the bottom annulus becomes worn due to an erosive flow of molten metal, the working life of the annulus may be extended in two ways. First, the annulus may be removed between casting operations and its bottom surface may be faced. Second, after the facing operations have rendered the bottom surface flush with the crimping ring 18, the annulus may then be inverted so that the lower inner edge is replaced with the upper inner edge.