Abstract: Cooling device (1) for cooling a seamless, rolled pipe (R) made of a metal, preferably steel, which has a nozzle assembly (10) comprising one or more nozzles (14), which are configured to apply a cooling medium (K), preferably water or a water mixture, to the outer circumferential surface of the pipe (R) while the pipe (R) is transported along a conveying direction (F) through a cooling section of the cooling device (1), wherein the nozzle assembly (10) has an access (Z), via which the pipe (R) can be removed from the cooling section in the radial direction of the pipe (R), preferably upward.

Abstract: Methods for processing workpieces. A first temperature of a first section of a workpiece having a non-uniform thickness may be maintained. A cooling rate of a second section of the workpiece may be controlled while maintaining the first temperature of the first section. The workpiece may be quenched after cooling the second section of the workpiece to form a quenched workpiece, in which the cooling rate may be controlled such that the second section of the workpiece has desired properties.

Abstract: A porous and permeable composite for treatment of contaminated fluids characterized in that said composite includes a body of iron particles and 0.01-10% by weight of at least one functional ingredient distributed and locked in the pores and cavities of the iron body. Also, methods of making a permeable porous composite for water treatment. Also, use of a permeable porous composite for reducing the content of contaminants in a fluid, wherein said fluid is allowed to pass through the permeable composite.

Abstract: To provide a technique suitable for elevating strength and toughness of a thin low-carbon steel. By performing rapid heating and rapid cooling to a thin low-carbon steel which is an ordinary steel with a thickness of 1.2 mm or less, a steel where a microstructure becomes a duplex grain size structure mixed with crystal grains having different grain diameters, which is not homogeneous, preferably, hard phase structures are contained in addition to the duplex grain size structure is obtained, and a high-strength and high-toughness thin low-carbon steel is obtained. Further, by performing a heat treatment process involving rapid heating and rapid cooling multiple times, a duplex grain size structure of crystal grains with smaller grain diameters or a hard phase structure contained therein is obtained, so that a thin low-carbon steel with higher strength and higher toughness is obtained.

Abstract: Iron-based alloys and articles in strips, sheets, workpieces and the like are converted into high strength steel with a minimum of cost, time and effort, including producing dual phase materials. This is achievable by extremely rapid micro-treating of low, medium, and high carbon iron-based alloys and articles by rapid heating and rapid cooling at least a portion of the alloy/article. This heating step involves nearly immediately heating the iron-based alloy to a selected temperature above its austenite conversion temperature. Then, the alloy is immediately quenched, also at an extremely fast rate, on at least a portion of the iron-based alloy in a quenching unit adjacent the heating unit. This procedure forms high strength alloy in a desired area, depending upon where the treatment was performed.

Abstract: In order to apply reclaimed oil to surfaces of empty cans each formed from a steel material and an aluminum material and having a coated surface and to heat the oil-applied empty cans, an empty-can treatment system includes a rotary kiln for heating the empty cans; a screw-type conveying apparatus for conveying the empty cans to the rotary kiln; and a reclaimed oil tank from which reclaimed oil is fed so as to be applied to the empty cans conveyed by means of the screw-type conveying apparatus. The screw-type conveying apparatus includes a casing pipe allowing the empty cans to pass therethrough; and a shaft portion disposed within the casing pipe and having a screw portion formed on the circumferential surface thereof. The shaft portion is formed of a pipe having oil discharge holes formed thereon at predetermined intervals.

Abstract: Produce metal powder, especially titanium powder, offering high purity and uniform granular shape and size, in an economical manner using an apparatus that comprises a pressure-resistant container comprising a high-pressure water tank, an injector nozzle for mixture gas of oxygen and hydrogen, a material element-metal feeder part, an ignition plug and a combustion chamber.

Abstract: In order to produce a carbon solid solution or carbide-containing surface layer on a substrate, the substrate is immersed into a cold bath of liquid active medium, and heated inside the liquid active medium by heating means immersed in the liquid active medium as well.

Abstract: The invention relates to a method and apparatus for improving the performance of a heating furnace for metal slabs. The elongated heating furnace includes a water cooled conveyor track for carrying metal slabs through the heating furnace and at least one fossil-fuel operated burner for heating metal slabs. The heating furnace includes a convection zone wherein metal slabs are heated primarily by the action of convection heat delivered by combustion gases driven therethrough, and a heating zone wherein metal slabs are heated primarily by the action of radiation heat emitted by the burner located therein. In addition, the metal slabs are heated by at least one radiant heater which is positioned at a location spaced apart from said burner in the longitudinal direction of the heating furnace for reducing the depthwise temperature differences developing in the metal slabs in the heating furnace and/or for increasing the capacity of the heating furnace.

Abstract: Method and apapratus for inhibiting stress corrosion cracking adjacent weldments in steel workpieces such as stainless steel pipe through generation of a controllable throughwall temperature differential by exposure of one workpiece surface to extermally generated radiant heat while maintaining a flow of coolant fluid past the other surface thereof.

Abstract: A process for hardening elongate metal elements having a circular section, according to which the said elements are made to advance through a heating station and a hardening station by a conveyer device formed by a succession of advancement and support devices individually controllable in a direction transverse the said elements in such a way as to maintain the axis of each of the elements always coincident with a predetermined axis of advancement each advancement device being individually controllable in such a way as to impart to each point of each element displacements with a controllable velocity along cylindrical helices the pitch of which can be varied from zero to infinity and, in particular, to impart to each element during the traverse through a current of cooling fluid generated within the said hardening station transversely of the axis advancement, a rotary and translational movement with a velocity variable according to laws depending on the distribution of mass along the element itself.

Abstract: Metallic work pieces are annealed under protective gas in bright annealing furnaces with subsequent cooling line. Exogas or nitrogen is used as protective gas. In the latter case, liquid nitrogen is evaporated and introduced at several locations in the bright annealing furnace and the cooling line.For the purpose of decreasing the installation costs, increasing the performance and improving the quality, the liquid nitrogen is sprayed without prior evaporation onto the material to be annealed, namely in the end zone of the cooling line.

Abstract: A process is provided for heat treating steel in which each segment of a piece of steel is quenched in a quenching zone by directing the flow of a sufficient amount of a cooling medium against a surface of each segment to lower the temperature of the segment to a desired temperature while vaporizing substantially all of the cooling medium to create a vapor blanket around at least one surface of each segment so cooled. In one embodiment, steel pipe is heated above its critical transformation temperature and then each longitudinal segment of the pipe is sequentially quenched by substantially simultaneously sending a sufficient amount of water against the inside and outside surfaces of each segment to reduce the temperature of the segment to within a predetermined range while vaporizing substantially all of the water to create a steam blanket around the segment.

Abstract: The apparatus is provided with a manifold-type means of feeding gas into the bore of the treated object and a means of discharging gas from the bore of this object which are secured as cantilevers to brackets of a frame. These means are provided with drives enabling them to displace longitudinally so as to assure the clamping of the treated object therebetween at the end faces. The apparatus is also provided with a drive causing the treated object to rotate integrally with said means. Contrivances serving to heat up and subsequently to cool down the treated object are mounted on a platform which is installed on horizontal guides and is provided with a drive for longitudinal travel.

Abstract: A tempering unit for tempering shaped forms in thin layer has an interchangeable central unit provided with grippers for the workpiece before tempering made up of an assembly of bearing fingers supporting the workpiece and assembly of bearing fingers mounted on closing jacks which bear against the upper part of the workpiece with the supporting fingers preadjusted in height. The structure is particularly adaptable to tempering long cylindrical pieces.

Abstract: Heat is generated by combustion of coal or like carbonaceous fuel reactant dissolved in molten salt. The generated heat is transferred to steam by an alternating sequence of direct contact heat exchanges of the salt and steam with a common heat transfer medium.

Abstract: 1. A method of inducing rapid failure in a shape that is under stress and is composed of cold rolled steel comprising applying against a surface of said cold rolled steel shape a mixture composed of lithium metal, lithium chloride and potassium chloride, rapidly heating that mixture as well as the surface of the steel shape in contact therewith sufficiently to melt the mixture but below the annealing temperature of the steel, and maintaining that temperature until the steel shape cracks.

Abstract: The specification discloses a completely automated method and apparatus for producing high tensile steel, of a controlled, predetermined U.T.S. and cross sectional area, from low and medium carbon steel by subjecting the steel to substantial elongation while simultaneously substantially heating and immediately thereafter rapidly quenching the steel, and while continually moving the steel relative to the heating and quenching means employed. The steel is heated to a temperature above its austenite conversion temperature. Greater elongation produces greater ultimate tensile strength, as much as more than twice as great as the starting ultimate tensile strength, and elongations approaching 200 percent have been effected.