Abstract: An apparatus and process for the dry removal of the scale from the surface of a metal product comprising at least one heating area that does not reduce the specific surface of the material to be treated and does not cause oxidation, at least one reducing area for performing the reaction between a specific reducing gas (normally hydrogen) and at least the scale, at least one cooling area for cooling the metal product, means for heating the metal product, means for heating the reducing gas, means for controlling the fluid dynamics of the boundary layer produced by the flow of said reducing gas over the surface of the metal product, means for removing the reaction products front the reducing gas after the reaction, means for cooling the metal product, and means for removing the reaction products from the treated surface of the metal product.

Abstract: An apparatus and process for the dry removal of the scale from the surface of a metal product comprising at least one heating area that does not reduce the specific surface of the material to be treated and does not cause oxidation, at least one reducing area for performing the reaction between a specific reducing gas (normally hydrogen) and at least the scale, at least one cooling area for cooling the metal product, means for heating the metal product, means for heating the reducing gas, means for controlling the fluid dynamics of the boundary layer produced by the flow of said reducing gas over the surface of the metal product, means for removing the reaction products front the reducing gas after the reaction, means for cooling the metal product, and means for removing the reaction products from the treated surface of the metal product.

Abstract: An apparatus and process for the dry removal of the scale from the surface of a metal product comprising at least one heating area that does not reduce the specific surface of the material to be treated and does not cause oxidation, at least one reducing area for performing the reaction between a specific reducing gas (normally hydrogen) and at least the scale, at least one cooling area for cooling the metal product, means for heating the metal product, means for heating the reducing gas, means for controlling the fluid dynamics of the boundary layer produced by the flow of said reducing gas over the surface of the metal product, means for removing the reaction products from the reducing gas after the reaction, means for cooling the metal product, and means for removing the reaction products from the treated surface of the metal product.

Abstract: An apparatus and process for the dry removal of the scale from the surface of a metal product comprising at least one heating area that does not reduce the specific surface of the material to be treated and does not cause oxidation, at least one reducing area for performing the reaction between a specific reducing gas (normally hydrogen) and at least the scale, at least one cooling area for cooling the metal product, means for heating the metal product, means for heating the reducing gas, means for controlling the fluid dynamics of the boundary layer produced by the flow of said reducing gas over the surface of the metal product, means for removing the reaction products from the reducing gas after the reaction, means for cooling the metal product, and means for removing the reaction products from the treated surface of the metal product.

Abstract: A welding device for butt welding of bars as well as blooms, slabs, or billets produced by continuous casting, includes a roller conveyor for simultaneous conveying of at least two bars along a rolling line, jaws for gripping the bars, and electric power supplies which are set in contact with the surfaces of the two bars for carrying out a welding operation. The electric power supplies are provided with respective positioning and actuating devices controlled to actuate them independently from one another during setting in contact and detachment of the bars.

Abstract: A cooling device for fume intakes for exhausted gases from foundry furnaces comprises a flue pipe for extracting the fumes produced in premises containing a source of fumes, a cooling system consisting of a tube made of steel lined in appropriate areas of its surface and length and wound in a spiral. In the tube there circulates cooling water with a temperature of the water at entry and in operation kept constantly between 50 and 120° C., with a temperature variation between the inlet and the outlet of the tube in a range of 10-30° C. The lining of the tube may be made of special martensitic stainless steel, or of glassy alloy, or of Ni/Cr cermet.

Abstract: A welding device for butt welding of bars, blooms, slabs, or billets produced by continuous casting comprises a roller conveyor for simultaneous conveying of at least two bars along a rolling line, jaws for gripping bars, electric power supplies which are set in contact with the surfaces of the two bars, for carrying out a welding operation. The electric power supplies are provided with respective positioning and actuating means, controlled by an actuation device which actuates them independently from one another during setting in contact and detachment of the bars.