Institut De Recherches De La Siderurgie Francaise

Irsid

Michel Larrecq

Jean-Pierre Birat

Louis Vedda

Michel Nogues

Denis Tromp

This invention relates to a roller for continuous casting between rollers, with circulation of cooling fluid. In this roller, comprising a cylindrical body surrounded by an envelope, the cooling fluid circulation channels disposed circumferentially between the body and the envelope, are constituted by groups of grooves on the inner surface of the envelope extending over arcs of circumference, and organizing the circulation in distinct angular sectors corresponding to each group. Axial throats are provided between the body and the envelope at the ends of each sector, and into which open out, on the one hand, radial fluid admission and return pipes passing through the body, and, on the other hand, the grooves of a group by one of their ends, the throats being in a number double that of the angular sectors.

Roller for continuous casting between rollers, with circulation of

A vibrating ingot mold for the continuous casting of metals, particularly of steel, comprising at least one ultrasonic transducer (8) mounted on the edge (20) of one end of the interal tubular element (14) of the mold, in an extension of that element, and oriented to transmit to that element the ultrasonic vibrations which it generates in a longitudinal direction, parallel or substantially parallel to the casting axis (A) in the mold. By reducing friction between the cast metal and the inner mold wall, the mold structure promotes lubrication and improves the quality of the surfaces of the cast products while reducing the danger of breakouts. It can be used with vertical, inclined, curved and horizontal continuous casting plants.

Vibrating ingot mold for continuous casting of metals

In regulating the flow of cooling water sprayed upon a metallurgical product such as a steel slab in a machine for the continuous casting of such products which then undergo a straightening operation, the present, past and future speeds of the product are taken into account so as to compensate a projected change in the temperature of the product in the straightening stage, due to a planned or expected modification of the cooling conditions. These conditions are established by a regulating system responsive to changes in the speed of the product; the anticipated temperature change is compensated by substituting for the true speed, as a controlling parameter, a fictitious speed lying between the true speed and an advance image of an anticipated speed change whose effects upon the temperature are to be neutralized.

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Metz, France

Michel Larrecq