Techmetal Promotion

Techmetal Promotion (societe Anonyme)

Daniel Neyret

Roger Ventavoli

A process and apparatus for producing thin metal products by continuous casting. The apparatus comprises an ingot mold (2) and squeezing rolls (6, 6') intended to cause, by reduction of the thickness of product, closing of the solidification pool. The separation force (F) exerted on the squeezing rolls by the product is measured and a variable magnetic field, matched to the separation force so that the latter does not exceed over a long period a predetermined upper limit value representing the force that the squeezing rolls can tolerate temporarily without damage, is applied to the core of the still molten product by inductors (8, 8') housed in, or upstream of, the squeezing rolls.

Process and device for producing thin metal products by continuous

The process for the continuous casting of thin metal products, particularly steel, products, of the type according to which the molten metal is poured into a continuous-casting ingot mold of elongated section, from which the partially solidified metal is continuously withdrawn and the thickness of the product emerging from the ingot mold is reduced by means of squeezing rolls (4, 4'), comprises the steps of (a) detecting whether the liquid phase tip is located upstream or downstream of the squeezing rolls, (b) applying between the squeezing rolls, a variable magnetic field to the core of the product, while matching the action of the magnetic field to the detected position of the liquid phase tip. The device for carrying out this process includes a coil assembly (7, 7') for detecting the bottom of the solidification pool, at least one inductor (6, 6'), housed in at least one of the squeezing rolls and capable of producing a variable magnetic field in the core of the cast product, and a DP unit 8 for making the action of the magnetic field dependent on the detected position of the liquid phase tip.

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Metz, France

Daniel Neyret