Institut De Recherches De La Siderurgie Francaise

Thyssen Stahl Ag

Usinor

Institut De Recherches De La Siderurgie Francaise (irsid)

Paul-Victor Riboud

Jean-Michel Damasse

Christophe Ganser

Christian Gatellier

Didier Huin

Dominique Themines

Marc Chastant

A side wall is provided for closing off the casting space of a plant for the continuous casting of metal strip between two counterrotating rolls which define a nip area and have horizontal axes, of the type including an upper edge, a lower edge, and a face that defines part of a casting space. The wall includes a lower part for preventing cracking in the side wall adjacent to the nip area that includes a recess filled with a refractory. Preferably, the refractory enclosed by the recess is a material having a lower hardness than the refractory forming the balance of the wall, and high thermal insulation properties.

Side wall for closing off the casting space of a plant for the twin-roll

Process for the continuous casting of a fine metal wire, in which a jet of liquid metal is quenched and solidified in a layer of cooling liquid deposited on a surface in motion. The dispersal of the turbulence of the cooling liquid is accelerated upstream of the point of impact of the jet of metal on the liquid. The apparatus for carrying out the process comprises a grating arranged across the layer of cooling liquid between the outlet of the pipe feeding the cooling liquid onto the surface in motion and the point of penetration of the jet of metal into the cooling liquid.

Process and apparatus for the continuous casting of fine metal wire

Process for the treatment of phosphuretted slag obtained by refining a molten bath, such as steel. The process according to the invention involves hot oxidizing the slag into which is blended, after refining, a pulverized solid adjuvant, strongly oxidizing and easily fusible upon contact with the slag. Among utilizable adjuvants, the carbonates of alkaline metals or alkaline earth metals are preferred, in particular sodium carbonate, which additionally, is a product currently utilized in the domain of the elaboration of metal, notably in iron metallurgy. The invention ensures a rapid passivation of the slag in stabilizing the phosphorus by forming phosphate and allowing in this manner the avoidance of the liberation of very toxic phosphenes which are produced naturally by cold hydrolysis.

Method for the treatment of phosphuretted slag

A composition for forming a protective layer or slag at the surface of molten steel in the mold during a continuous casting process. The composition is constituted by a mixture of a natural silicate of low melting point and an elevated contents of alkaline oxides, a basic compound, a flux and pulverulent carbon. The natural silicate is a feldspar, a nepheline or nepheline-syenite. The composition is intended for use in continuous steel casting processes.

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Metz, France

Paul-Victor Riboud