Abstract: A process for depositing by electropolymerization an organic film onto an electrically conductive surface, wherein use is made of a mixture comprising (a) at least one monomer suited for forming a polymer onto said surface, (b) at least one material which can be linked to said polymer, (c) a supporting electrolyte and (d) a solvent, said process comprising the use, as material to be linked to said polymer, of a reactive substance which can react chemically with the growing polymeric chains formed starting from the monomer.

Abstract: Fluidic regulating device intended to be placed between a blank-holder and the sliding member serving to displace the blank-holder. It comprises for example a body (11) intended to be mounted on the abovementioned sliding member (4) in such a way as to be driven by the latter, said body (11) accommodating at least one compact fluidic jack (12) and comprising at least one pipe (13) for feeding a pressurized fluid into the jack or jacks (12), the piston (15) of each jack being attached to a movable member (16) intended to work in conjunction with and displace the blank-holder (3) with respect to said body (11), in such a way that, when the displacement of the abovementioned sliding member is stopped by a stop (18), before the blank-holder (3) has come into contact with a blank placed on or against the die (2), the force exerted by the blank-holder on said blank is determined by the pressure of the fluid injected into said jack (12) and can vary during the stamping cycle.

Abstract: A method for metallothermally reheating a liquid steel bath in a metallurgical container into which a metal fuel is placed and oxidizing and agitating gases are injected under its surface. A controllable flow resulting from the injection of agitating gas is generated in the bath by means of a device which is separate from the oxidizing gas injection device, and the metal fuel is inserted into said flow so that it comes into contact with said oxidizing gas.

Abstract: A device for continuously grinding the edges of moving metal foil comprises a stationary support on which a mobile support can slide perpendicular to the strip. The mobile support comprises a pivoting arm, the ends of which are provided with a roller for guiding the strip, lower and upper dressing rollers, an upstream tool holder, with at least one tool for dressing the edge and a downstream tool holder for chamfering the edge. The mobile support is brought into contact with the edge of the strip by the application of an adjustable pressure to the guide.

Abstract: To an elongate body (1) having preferably an adjustable length, seals (2, 3) are fixed. The seals comprise a skirt (22) forming a crown which surrounds a body portion at a small distance from the surface thereof, the skirt being made of a material having a flexibility sufficient to be slightly reduced in diameter when the tool is introduced into a tubular element to be expanded. The skirts of the two seals may be interconnected, thus outwardly delimiting an internal ring-shaped chamber (20) intended to receive an expansion fluid.

Abstract: A process for preparing alloyed or non-alloyed, reactive metals by reaction of halides thereof, in particular chlorides, with a reducing agent at a temperature higher than the melting temperature of the metal to be developed, comprises solidifying the developed metal while maintaining in the reaction zone wherein the reduction proceeds, a layer of this metal in the liquid state, at a temperature higher than the boiling or sublimation temperature of the other reaction products at the pressure at which the reduction develops, these other reaction products being substantially continuously discharged in the gaseous state.

Abstract: To an elongate body (1) having preferably an adjustable length, seals (2, 3) are fixed. The seals comprise a skirt (22) forming a crown which surrounds a body portion at a small distance from the surface thereof, the skirt being made of a material having a flexibility sufficient to be slightly reduced in diameter when the tool is introduced into a tubular element to be expanded. The skirts of the two seals may be interconnected, thus outwardly delimiting an internal ring-shaped chamber (20) intended to receive an expansion fluid.

Abstract: Disclosed is a phosphated steel product and a method for producing the product. The method comprises passing at least one side of a steel strip through a molten bath of a metal selected from the group consisting of Zn-Al and Zn-Fe to form a first coating, electroplating a second coating consisting of essentially a pure metal selected from the group consisting of Mn, Fe and Ni onto the first coating and subjecting the exposed surface of the second coating to a phosphating treatment to form a phosphate coating on the second coating.

Abstract: This invention provides a process and an apparatus for baking an organic coating which has been applied to a substrate. Such coated substrates are conventionally baked in a furnace using a mixture of combustion gas and air. This process in uneconomical in terms of energy consumption and also involves cleansing of used gases before they can be discharged into the atmosphere. The present invention provides a rapid process for baking such coatings in an inert gas atmosphere by means of short-wavelength infra-red rays. Coatings are heated in such a penetrating manner than they are baked at the substrate/coating interface and this prevents the formation of swellings.

Abstract: There is described a device for electrolytically depositing, in a continuous operation and under a high current density, a lining metal layer over at least the one surface of a metal strip moving through an electrolytic bath, comprising at least one conducting roller cooperating with a cathode current supply, extending cross-wise relative to the strip movement direction and rotating about the axis thereof, in contact with the strip, substantially at the same circumferential speed as the traversing speed thereof, at least one anode being provided in the electrolytic bath facing at least the one surface of the strip moving through said bath, device in which said conducting roller is at least partly hollow, and the cathode current supply comprises a series of parallel-connected contacts which are distributed over that inner cylinder-like surface of the roller which lies opposite that outer surface portion the strip is applied on.

Abstract: An apparatus which comprises at least one abrasive rubbing element mounted on a retractable support extending over all the width of the roll face. The abrasive rubbing element is applied with a predetermined pressure against the roll face during operation.

Abstract: A method of securing a lagging component to a metal surface, comprising: positioning a prefabricated lagged component having one or more holes on the metal surface; inserting a securing element into each hole of the lagging component until its end touches the metal surface; welding the securing element to the surface using a welding gun; and filling the remaining hole cavity with a packing material around the securing element. The securing element is held in place prior to welding by a cardboard retainer.

Abstract: A shotting turbine having blades with working faces having a longitudinal profile comprising a convex part and a concave part with angles of curvature chosen to provide an optimized rate of ejection of the shot and a high concentration of the jet.

Abstract: A tuyere for injecting hot reducing gases into a furnace is provided with an inlet pipe and a plasma oven whose gas outlet axis is inclined to the longitudinal axis of the tuyere. The angles which the outlet axis of the plasma oven and the inlet pipe form with the said longitudinal axis are such that the longitudinal axis is parallel to the vector sum of the amount of movement of the gases from the plasma oven and the inlet pipe respectively .

Abstract: An explosive plug for blocking tubes comprises a tubular metal body closed at one end by a solid head and having at the other end a surface-contact region containing at least two spaced apart charges actuable by a detonator. The metal body when placed in a tube to be blocked is so arranged that the surface-contact region is coaxial with but at a distance from the tube so that successive explosion of the charges causes the surface-contact region to be radially spattered against the interior of the tube thus producing a reliable metal weld or welds extending along a substantial part of the end region of the tube.

Abstract: A hydraulically operated device for applying a force to a component, for example to tighten a component such as a nut comprises a square peg to engage the nut, first hydraulic means in the form of a motor to rotate the square peg rapidly and second hydraulic means in the form of a piston and co-operating arm arrangement to rotate the pegs slowly with a substantial force.

Abstract: Disclosed is an apparatus for the projection of refractory and other material for the relining and repair of a metallurgical plant, particularly converters. The apparatus comprises an articulated arm capable of pivoting on its base and supporting a lance carrier in which a telescopic, retractable lance is mounted. The lance carrier is articulated on an arm acting in the manner of a scissor, the movement of which is effected by two jacks.

Abstract: There is described a method for continuously electrodepositing with high current density, a coating metal on a metal sheet, which comprises moving by means of a movable cathode the metal sheet pressed thereagainst, in front of an anode inside a zone that comprises an electrolyte for transferring the coating metal, in which the cathode current is distributed uniformly over that portion of the metal sheet which moves in the area for metal transfer to the cathode in such a way as to cause a current density which is substantially equal in every point of said sheet portion.

Abstract: A centrifugal shotting turbine having easily replaceable blades shaped so as to project shot at a high rate of ejection in a concentrated jet. The turbine comprises a plurality of curved blades, each having a convex-concave working surface and longitudinal fillets extending from opposite edges thereof. The fillets fit into corresponding grooves in the flanges between which the blades are interposed and are secured therein by bearing pins and springs.

Abstract: The present invention relates to an installation for ramming the material constituting the refractory lining of a metallurgical vessel.The ramming installation comprises several ramming elements mounted on an arm horizontally shiftable on a support secured to a column. The column carries a monitoring table above the support and is vertically shiftable on a gantry frame. The gantry frame rolls horizontally relative to the shell of the vessel. The shell of the vessel is mounted on a turntable to which a generally reciprocatory rotary movement is imparted.