Abstract: The instant invention relates to a multi-stage stamping-bending method for introducing a primary and at least one secondary structure into a band-shaped metal foil, wherein, after passing through the multi-stage stamping-bending method, the metal foil encompasses at least two 180° bends between primary and at least one secondary structure along the wave train of the primary structure within one wave of the primary structure, in the case of which the primary structure is introduced into the metal foil during a first bending method step so as not to be formed completely in all of its areas, in the case of which the primary structure is embodied completely in its remaining areas during a subsequent second bending method steps and in the case of which the at least one secondary structure is introduced into the metal foil in a completely formed manner during a subsequent third bending method step, wherein the metal band passes through the method steps back-to-back.

Abstract: This wire stock is made of a microalloyed steel having a carbon content of between 0.2% and 0.6% by weight and furthermore containing at least one alloying element selected from the group consisting of vanadium, molybdenum and chromium, in a proportion, by weight, of at least 0.05% and at most 0.5% of said alloying element or of the combination of said alloying elements. Such wire stocks are manufactured in order to produce, by deformation and heat treatment, a ready-to-use wire which is used, for example, to reinforce articles made of plastics or made of rubber, especially tire covers, plies, belts, hoses.

Abstract: A sheet metal carrier strip for electrical pins used for the production of electrical multipole connectors, comprises a planar substantially rectangular base portion 24. Two rows of upright legs 26, 30 are formed at each longitudinal edge of the base portion 24. The legs 26, 30 are alternately arranged in parallel vertical planes transversely offset one from another by at least the thickness of the legs 26, 30. A recess 14, 16 is provided in each leg, the recess opening at the upper edge of the leg 26, 30. All recesses 14, 16 in pairs are transversely aligned and designed to insert a contact pin 34 respectively. An interspace formed between each pair of adjacent legs 26, 26 of each row of legs is smaller then the width of the legs 28 of the adjacent row of legs as measured in longitudinal direction of the carrier strip 10, so that a leg 26 of one row is overlapped by a pair of legs 28 of the adjacent row respectively as seen in transverse direction.

Abstract: A transfer device for transferring solid articles, comprising: a cylindrical member which has a supply opening formed at one end portion and a discharge opening formed at the other end portion, such that an angle formed between an axis of the cylindrical member and a horizontal plane is not more than 75.degree.; a transfer member which is rotatably provided in the cylindrical member; the transfer member including a rotary shaft extending along the axis of the cylindrical member and a helical vane projecting from a peripheral surface of the rotary shaft such that lead angle of the helical vane at its outer peripheral edge ranges from 3.degree. to 25.degree.; and a drive member so as to rotate the transfer member about the axis of the cylindrical member at a rotational speed of not more than 500 r.p.m.

Abstract: The subject of the invention is a method of lubricating a mold (1) for the continuous casting of a metal product (16), of the type including a vigorously-cooled vertically-oscillating metal tubular element (2) defining a passage (4) for the cast metal and intended to cause, in contact with its wall (3) in said passage, the solidification of said metal product, in which a lubricant in the liquid state is injected through said metal tubular element toward said metal product being solidified, wherein said injection is carried out at points distributed annularly at a single level of said tubular element, said level lying at a distance greater than 20 cm from the lowest level at which solidification of said product is able to be initiated, and in that the flow rate of said lubricant is sufficient to cause a fraction of said lubricant to rise up along said wall to the level at which solidification of said product is effectively initiated.

Abstract: The invention relates to a hydrometallurgical process for decontaminating soils 1 which are polluted with metallic elements, comprising a stage of basic leaching I so as to bring about the dissolution of the metallic elements to be removed, a cementation stage II bringing about the precipitation 6 of said elements in metal form, performed by electrochemical exchange with a zinc powder 5 produced by a stage of electrolysis III of the solution 7 originating from the cementation stage. In accordance with the invention a complementary addition of zinc is performed, preferably at the exit of the leaching stage in the form of a leachate 17 of waste from iron and steel manufacture, especially of dust 13 from electrical steel manufacture 15.

Abstract: The subject of the invention is a process for the continuous casting of very small-diameter wires directly from liquid metal, according to which said liquid metal is made to flow out of a heated and pressurized container made of refractory material, forming a jet of liquid. metal having a diameter equal to or slightly greater than that of the wire to be cast, and said jet is made to solidify by making it penetrate into a layer of moving cooling liquid deposited on the internal wall of a drum rotating about a horizontal axis, wherein said container is fed, continuously or intermittently, with solid metal without interrupting casting and wherein said solid metal is melted inside said container.The subject of the invention is also a device for the continuous casting of very small-diameter wires directly from liquid metal, allowing this process to be implemented.

Abstract: The furnace includes a vessel closed by a floating roof, and a sealing means mechanism between the roof and the vessel. The sealing mechanism includes two joint surfaces, one of which is arranged on the peripheral edge portion of the roof whereas the other is arranged on the peripheral edge portion of the vessel. The first surface is substantially toric and the second surface substantially frustoconical. The joint surfaces permit the centering of the roof relative to the axis of the vessel. The peripheral edge portion of the vessel is provided with a coping element on which one of the joint surfaces is arranged.

Abstract: In order to regulate the combustion air flow rate of a flue gas collection device (1) of a metallurgical reactor (2) comprising a combustion chamber (4) supplied with air by a variable flow fan (9), a set value C.sub.0 for the oxygen content in the flue gases in the discharge duct (5) is set, the oxygen content M.sub.1 of the flue gases at the outlet of the combustion chamber (4) is measured, using C.sub.0 and M.sub.1, a setting C.sub.1 for varying the combustion air flow rate is calculated, a variable representative of the sudden variations of the flow rate of unburnt gases at the outlet of the metallurgical reactor (2) is measured and a setting C.sub.2 for the combustion air flow rate is calculated to achieve complete combustion of the unburnt gases in the flue gases; the values C.sub.1 and C.sub.2 are added to obtain a setting for the combustion air flow rate which is sent to the regulation device of the fan (9); these calculations may be carried out by electronic means (14, 15, 16).

Abstract: The inside of the metallurgical container is connected to a fan (105) through an exhaust duct (102). An additional gas is introduced in the intake part of the fan (105) preferably through the duct (102). The additional gas introduction flow is regulated in such manner that the gas pressure in the intake part of the fan (105) is maintained at a fixed value, via an adjusting valve (108) preferably placed in an additional duct (107) connected to the exhaust duct (102). A control system (110) regulates the opening and closing of the adjusting valve (108) in such manner as to maintain the gas pressure in the intake part of the fan (105) constant.

Abstract: A wall electrode includes a metal bar adapted to extend through the wall of the furnace, a water-cooled sleeve composed of a material which is a good conductor of heat and electricity, an end member composed of a material which is a good conductor of heat and electricity, and an annular member such as a ring composed of a metal which is heavy and has a low melting point surrounding the bar so that the heavy metal in the liquid state spreads in the space between the bar and the sleeve when the annular member is made to melt during use of the electrode.

Abstract: A method for exhausting gases or fumes from a metallurgical container through a duct connected to the intake of a pump while introducing an additional gas stream into the pump is described. The additional gas stream ensures a constant gas pressure at the intake portion of the pump.

Abstract: A method for sealing the connection between two sheet piles, this connection being achieved by using claws integrated with the sheet piles. Prior to the interlocking of the sheet piles, a jointing band of an elastic, compressible and/or hydroswellable organic material is stuck to the claw of at least one of the sheet piles. The method further includes fixing a metal sheet to the free surface of the band, and then interlocking the sheet piles. The invention also provides a sheet pile comprising a claw provided with a band of an elastic, compressible and/or hydroswellable organic material, characterized in that the outer surface of the band is at least partly covered with a metal sheet which is connected to the band.

Abstract: This device comprises a fixed support constituted by a cylindrical collar 14, through which the lance 5 may be axially displaced and scraping fingers 16 whose extremities, which comprise cleaving means 21, may be held substantially in contact with the lance. A clearance is arranged, between the lance and the collar, which is sufficient to allow the accretions 12 of materials which it is desired to remove from the lance to pass through. While the lance is being raised, the extremities of the fingers cleave the accretions until they are totally broken off from the lance and can then fall into the vessel.The device is particularly applicable to the unclogging of oxygen lances used in steelworks converters.

Abstract: In this method preformed turns of the wire are made to fall into a coil-forming pit having a substantially cylidrical wall with a vertical axis where they are superimposed and form a coil. In the course of the fall of the turns, there is exerted on the latter a radial force of attraction toward the wall of the pit, the direction of this force undergoing a motion of rotation about the axis of the pit. The force of attraction is preferably produced by a rotating magnetic field. For this purpose, the device comprises means for exerting on the turns said force undergoing a motion of rotation, these means comprising inductors such as electromagnets (5) which are evenly spaced apart on the periphery of the pit, and means for cyclically feeding dc current to these electromagnets. The invention is applied to the forming of coils of wires of magnetic metal, in particular steel.

Abstract: A soft steel for machine cutting with high machinability performances having a content of C.ltoreq.0.25%, a content of Mn of 0.8 to 1.5%, a content of P of .ltoreq.0.1%, a content of S of 0.15 to 0.40%, and a content of Si of 0.05 to 0.40%, expressed in percentages by weight. After finishing of the metal, the inclusions of manganese sulfide are surrounded by a plastic oxide layer of an average composition SiO.sub.2 : 35 to 45%; Al.sub.2 O.sub.3 : 10 to 20%; CaO: 15 to 25%; MnO: 10 to 20%. In producing this grade, after the addition of silicon and manganese, the liquid metal is agitated in the presence of a slag of a composition CaO: 20 to 55%; SiO.sub.2 : 35 to 65%; Al.sub.2 O.sub.3 : 15 to 40%; with a CaO %/SiO.sub.2 % ratio of about 1.

Abstract: A universal finishing stand in which the rolling wheels of the horizontal rolls are disposed and eccentric to the transverse central planes of the corresponding rolling tables and adjacent the vertical laminating roll in order to form a space defined by the passive faces of the rolling wheels and a support post through which a rail blank may be freely passed during the edging and universal rolling passes. In another embodiment, the space is temporarily formed by shifting the horizontal rolls along their axes of rotation.

Abstract: The steel rail is submitted to a tensile stress exceeding the conventional 0.2% offset yield strength of the steel, up to a stress value corresponding to a total plastic deformation of the whole rail.

Abstract: A hydraulic stretching machine for straightening and stress-relieving rails, the machine being defined by stretching grips and fixing shackles being displaceable individually and independently, laterally and vertically, with respect to the longitudinal axis of the stretching machine, and grip-holding jaws which can be oriented about a longitudinal axis, the jaws including a fixed jaw and a mobile jaw articulated in and upon the fixed jaw.

Abstract: An improved two phase basic steel refining process for phosphoric pig iron is described which comprises forming a steel having a phosphorus content of not greater than 0.