Abstract: A continuous casting mold for metals is provided that is formed of an assembly of four metallic plates (13, 14) which plates have channels in their respective interiors. The channels are vertically oriented and serve to pass a fluid which is being circulated for the purpose of cooling. Two or more of said plates (13, 14) each have one or more horizontal channels (6a, 6b) in the upper part of the plate, which channels serve for circulation of cooling fluid and are independent of the aforesaid vertical channels, wherewith the said vertical channels are terminated at a level below said upper part of the plate.

Abstract: Method comprising a thermal treatment step proper during which said sheets are in contact with a part of their surface (that is they are, for example, coiled or in tight packets) and a step of preliminary treatment of these surfaces by means of an aqueous solution or a water-alcohol solution into which an organic product of the silane type has been introduced.This treatment makes it possible to prevent the sticking of the sheets; it is particularly effective and it does not require any preliminary activation of the surface.

Abstract: A method of controlling a continuous skin-pass and reduction operation for a metal strip includes the steps of passing a strip through a gap between working rollers of at least two successive rolling stands, only an upstream one of the stands providing substantial thickness reduction of the strip; determining an extension rate of the strip provided by the upstream stand; determining a tension of the strip downstream of the upstream stand; adjusting the speed of the working rollers of the upstream stand compared to the speed of the working rollers of a downstream one of said stands according to the determination of the extension rate; and adjusting the squeezing force of the upstream stand according to the downstream tension determination. A response time to the step of adjustment of the squeezing force is longer than a response time to the step of adjusting the speed of the working rollers.

Abstract: The present invention relates to a process for treating the surface of a metal part to prepare it for drawing and to protect it temporarily against corrosion, comprising applying an aqueous treatment composition to the surface of said part and drying the aqueous composition so applied, characterized in that the aqueous composition is first obtained by mixing:an aqueous solution comprising at least one alcohol or fatty acid polyethoxylate; andan oil-in-water emulsion comprising at least 3% to 13% by volume of an oil phase comprising at least 75% to 90% by volume of at least one mineral oil and 5% to 10% by volume of at least one surfactant.The invention also relates to the metal parts so obtained.

Abstract: Process for producing a sheet or strip for making a can obtained by drawing and ironing from a steel having the following composition in percentage by weight: Carbon less than 0.008%, Manganese between 0.10 and 0.30%, Nitrogen less than 0.006%, Aluminium between 0.01 and 0.06%, Phosphorus less than 0.015%, Sulphur less than 0.020%, Silicon less than 0.020%, a maximum of 0.08% of one or more elements selected from copper, nickel and chromium, the remainder being iron and residual impurities, in which process the slab is hot rolled into a hot sheet or strip having a thickness less than 3 mm, and then the hot sheet or strip is cold rolled with a reduction of between 83 and 92% and subjected to a recrystallization annealing and cold rerolled with a reduction of between 10 and 40%.

Abstract: The invention discloses the manufacture of a metal tank comprising the following steps: coating a strip of sheet steel with a thermally adhesive polymer based layer, preparing segments provided with assembly zones from the blanks of the said coated sheet, assembling the said segments at the assembly zones, consolidating the assembly by cold mechanical assembling means and heating to activate bonding of the polymer layers in contact at the assembly zones. The invention is useful in particular for manufacturing fuel tanks and heat exchangers.

Abstract: The mold comprises a tubular metal component (4), made of copper or a copper alloy, cooled by water circulation against its external wall and intended to ensure that the cast metal undergoes peripheral solidification on contact with its internal wall, and an uncooled feed head (9) made of a thermally insulating refractory, intended to contain cast metal in the liquid state and sitting on top of the cooled metal component (4) and defining with it a continuous sizing passage for the cast metal. A horizontal metal annulus (16) cooled by internal circulation is added between the feed head (9) and the tubular component (4) and aligned with the internal wall of the latter.

Abstract: Apparatus which eliminates the risk of forming wrinkles on a strip conveyed through a cooling furnace of a continuous heat-treatment plant, especially an annealing or galvanizing furnace, through which the strip is conveyed by rolls, the latter being heated by contact with the strip over its width, the risk of forming wrinkles occuring during a change of strip width when the following strip is wider, the latter consequently passing over rolls that have preserved the imprint of the thermal expansion due to the previous strip, wherein the heating elements are positioned close to and beneath the rolls, over the entire width of the furnace, and, on the opposite side of the rolls from the said heating elements, panels are positioned which are aligned so as, together with the wall of the furnace, to form a warm chamber, the continuously moving strip serving as a heat shield so that only that part of the roll which is not covered by the strip is heated by the said heating elements.

Abstract: A process in which, during the flow of molten metal in a conduit an inert gas and oil are injected at the position of the joint plane between two refractory parts in such a manner as to prevent the introduction of gases from the atmosphere into this conduit at the position of the joint plane. Apparatus. Advantages: plugging of leaks at the position of the joint plane, lower inert gas consumption absence of degradation of the quality of the molten metal by the inert gas.

Abstract: A process for the purpose of preparing the sheet for deep-drawing and/or protecting it against corrosion, wherein an aqueous solution of polyethoxylates of one or more lanolin derivatives is applied to the said surface, the said surface is dried to obtain a deposit in dry state, then at least one operation of oiling is performed on the deposit in dry state.This process makes it possible in particular to simplify the operations of deep-drawing: even after prolonged storage, it is not necessary to re-oil the treated sheet just before deep-drawing.

Abstract: Method of heating molten metal in a tundish by irradiating a plasma torch on molten metal flowing along an internal surface of a heating compartment, and tundish configured for such method.

Abstract: A wheel for a motorized land vehicle is composed of a wheel body and a roughly cylindrical wheel rim. The wheel body consists of a roughly cylindrical central part which serves to center and to mount the wheel on the axle hub of the vehicle. It also consists of an interior riser which is roughly conical and another inverted conical part that, together with the interior riser, defines a camber nose that has a large bend radius. The inverted conical part ends in a cut-off edge designed for the connection of the wheel body and the wheel rim. The wheel body is composed of at least two connected circular parts that vary in thickness and/or mechanical characteristics and are butt welded together.

Abstract: The invention provides a ladle for the preparation of metal comprising a metal case (1) provided, on its inner surface, with a refractory wall lining (3) and a refractory bottom lining (4) with a taphole (5), characterized in that the surface of the refractory bottom lining (4) in contact with the metal in preparation is a concave surface having at every point a slope in the direction toward the taphole (5).The invention also provides a method for producing such a refractory bottom lining.

Abstract: The invention relates to a process for application of an organic coating on a moving metallurgical product 7 from a bath of a liquid organic material 3 contained in a vat 2 and liable to comprise air bubbles, the transfer of said liquid organic material 3 onto the product being accomplished in a coating zone, characterized in that, in order to eliminate said air bubbles, there is created in at least one zone of the bath, located upstream from said coating zone, an ascending current in the liquid material so as to convey the air bubbles from the bath to the vicinity of its surface and cause their bursting. The invention also relates to an apparatus for the implementation of this process.

Abstract: A treatment process for metal in which there is applied to a metal surface a film of an organic product, the film is heated to a suitable temperature for a suitable time so that all or a portion of the product becomes fixed on the metal surface and the organic product becomes partly cross-linked on the surface. Applications to corrosion protection, to lubrication and to preparation for coating, especially varnishing sheets.

Abstract: A process for manufacturing a shaped metal can comprising, on one hand, a bottom (1), a cylindrical peripheral wall (2) in one piece with the bottom (1) and including at least one geometrically expanded region (2A, 2A) and, on the other hand, a lid crimped or seamed on the peripheral wall (2). The process comprises effecting in the region to be geometrically expanded a controlled folding in the form of folds of an accordion of the peripheral wall (2) an on the whole of the height of the region to be geometrically expanded to increase the volume of the metal available in this region, and unfolding the accordion folds of the peripheral wall to obtain a geometrically expanded region (2A, 2B).

Abstract: Device for sound insulating a wheel, in particular a wheel of a motor vehicle. The wheel comprises a circular central body, a substantially cylindrical rim including a rear part and a front part, the parts being separated by the plane of the body which extends substantially perpendicularly to the axis of rotation of the rim. The device includes at least one substantially cylindrical ring disposed concentrically relative to the rim and including at least one layer of a viscoelastic material, and at least one way to mechanically couple the cylindrical ring to the rim, the mechanical coupling ensuring a binding of the ring on the cylindrical parts of the rim.

Abstract: A process for manufacturing a shaped metal can by carrying out at least one step of locally and successively expanding elementary regions of a peripheral wall.

Abstract: A powder for covering an ingot mold for the continuous casting of steel, in particular steels with ultra-low carbon content. The powder comprises a base powder and particles of at least one metal nitride, its free carbon content (%C.sub.free) being between 0 and 1% by weight, it being produced by atomization, and having the form of granules of between 20 and 800 .mu.m in diameter. In one application of the invention, the nitride is silicon nitride, and its weight content (%Si.sub.3 N.sub.4) is equal to: %Si.sub.3 N.sub.4 =0.5-0.28.times.%C.sub.free .+-.0.10.

Abstract: A hot-rolled sheet steel for deep drawing, characterized in that it has the following composition:______________________________________ carbon >0.010 wt. % and <0.080 wt. % manganese >0.1 wt. % and <0.5 wt. % aluminum >0.02 wt. % and <0.08 wt. % silicon <0.1 wt. % phosphorus <0.04 wt. % sulfur <0.025 wt. % titanium <0.05 wt. % nitrogen <0.009 wt. % boron >0.001 wt. % and <0.01 wt. % copper >0.1 wt. % and <0.8 wt. % nickel >0.05 wt. % and <0.6 wt. %.