Abstract: Aluminum alloy containing Mg and Si, in particular useful for extrusion purposes containing in wt %: Mg 0.3-0.5 Si 0.35-0.6? Mn 0.02-0.08 Cr 0.05 Zn 0.15 Cu 0.1? Fe 0.08-0.28 and in addition grain refining elements up to 0.1 wt % and incidental impurities up to 0.15 wt %. The manganese (Mn), within the specified limits, has an additional positive effect on the extrudability of an AlMgSi alloy. In addition to promoting the transformation of the AlFeSi intermetallic phases, AlMnFeSi dispersoid particles are formed during homogenization. These particles are acting as nucleation sites for Mg2Si particles during cooling after homogenization. In a high quality billet the Mg2Si particles formed during cooling after homogenization should easily dissolve during the preheating and the extrusion operation before the material reach the die opening.

Abstract: A process for making a heat exchanger comprising extruding a profile (1) composed of a number of parallel tubes (2) and web-like portions (3) interconnecting said tubes (2), removing part of the connection made by the web-like portions (3) and expanding the extruded product in a direction perpendicular to the longitudinal direction of the tubes (2) and providing connecting means for allowing a fluid to flow through said tubes.

Abstract: The present invention relates to a method and a system for electrical connection between the successive cells (pots) arranged in series for the production of aluminium by electrolysis of alumina dissolved in molten cryolite, by the Hall-Heroult process. The invention is applied to series of cells arranged transversely to the axis of the series (line) and operating at a current greater than 300 kA and possibly above 600 kA. The present invention combines the different advantages of known design concepts into effective novel technical solutions for large pots. The solution optimises the resulting magnetic field and busbar performance parameters like voltage drop, weight, current distribution, distribution and average levels of magnetic field, inter-row distance, anode riser solutions and physical space for the busbar requirements.

Abstract: An uninsulated section comprising a first section element and a second section element is described; the first section element comprises a first cavity for housing a portion of a first heat-insulating body and a second cavity for housing a portion of a second heat-insulating body; the second section element comprises a third cavity for housing another portion of the first heat-insulating body and a fourth cavity for housing another portion of the second heat-insulating body. The uninsulated section also comprises a partition connecting the first section element and the second section element. Advantageously, the partition may be situated between the first and the second cavity and between the third and the fourth cavity.

Abstract: A method for manufacturing an impact absorbing member, starting with a closed or substantially closed hollow section with a mid section and two end sections, wherein at least one the end sections is bent to form a supporting member, whereby at least one imprint is made in the part of the section to be deformed by the bending operation. The invention also relates to an improved impact absorbing member formed by a manufacturing process including bending.

Abstract: A device for separation of fluid, in particular oil, gas and water, in connection with the extraction of such a fluid from formations under the surface of the earth or the sea bed. The fluid is transported in a supply pipe or transport pipe (4) to a separator (1) in the form of a tubular separator body, a gravitation tank or similar. The separated components, water and oil, are passed out of the separator separately via outlet pipes. The fluid upstream of the separator (1) is subjected to shear forces so that the drops in the supply flow are torn up to form drops that are so small that the interface generally becomes new and “uncontaminated” by surfactants. The shear forces are supplied by a phase inversion device (6) in the form of a valve or similar. Water can expediently be added to the fluid upstream of the phase inversion device (6) to achieve the desired phase inversion.

Abstract: An uninsulated section comprising a first section element and a second section element is described; the first section element comprises a first cavity for housing a portion of a first heat-insulating body and a second cavity for housing a portion of a second heat-insulating body; the second section element comprises a third cavity for housing another portion of the first heat-insulating body and a fourth cavity for housing another portion of the second heat-insulating body. The uninsulated section also comprises a partition connecting the first section element and the second section element. Advantageously, the partition may be situated between the first and the second cavity and between the third and the fourth cavity.

Abstract: An uninsulated section comprising a first section element and a second section element is described; the first section element comprises a first cavity for housing a portion of a first heat-insulating body and a second cavity for housing a portion of a second heat-insulating body; the second section element comprises a third cavity for housing another portion of the first heat-insulating body and a fourth cavity for housing another portion of the second heat-insulating body. The uninsulated section also comprises a partition connecting the first section element and the second section element. Advantageously, the partition may be situated between the first and the second cavity and between the third and the fourth cavity.

Abstract: A method of producing aluminium in a Hall-Héroult cell with prebaked anodes, as well as anodes for the same. The anodes are provided with slots in a wear (bottom) surface thereof for gas drainage. The slots are 2-8 millimeters wide, and preferably 3 millimeters.

Abstract: A device in connection with a pipe separator. The pipe separator comprising an extended tubular body (1) with a diameter that is principally the same as or slightly larger than the diameter of the inlet pipe (3) of the pipe separator. A gas manifold (2) is arranged in connection with the inlet pipe. The manifold (2) includes a number of vertical degassing pipes (7), which are connected to the supply pipe (3) immediately ahead of the inlet to the separator and which end in an overlying, preferably slightly inclined gas collection pipe (6). The manifold is designed so that the gas will be diverted up through the vertical degassing pipes and collected in the gas collection pipe (6) for return to the outlet pipe after the separator or transported onwards to a gas tank or gas processing plant or the like.

Abstract: A device in connection with equipment for continuous or semi-continuous casting of metal, in particular direct mould (DC) casting of aluminium in the form of a billet or wire billet, comprising a mould with a cavity or mould (3) that is provided with an inlet connected, via supply channels (6, 18) and a distribution chamber (5), to a metal reservoir (13) and an outlet arranged in the mould with a support and devices for cooling the metal. In connection with the supply channels (6, 18) between the metal reservoir (13) and the moulds (3), a metal lifting container (15) is arranged that is connected at an inlet (16) to the metal reservoir (13) via a channel (18) and to the distribution chamber (5) and the moulds (3) via an outlet (17) via another channel (6).

Abstract: The present invention relates to a method of improving the current efficiency (CE) in an electrolytic aluminum production cell with an electrolytic bath, at least one anode and at least one cathode, and passing current between said anode and said cathode through said bath and feeding an aluminum containing feedstock to the cell. The CE is improved in that the aluminum containing feedstock is prepared in a manner where it contains substantially no humidity or water before it is fed to the cell, where the electrolytic process is carried out at conditions with reduced amount of hydrogen present.

Abstract: A hose member having a central region surrounded by a circumferential portion comprising a number of metal tubes that are substantially parallel to each other and wound in a helical manner around a longitudinal axis of the hose member. The central region may be defined by a carrier made of a polymeric material, or a longitudinal central cavity.

Abstract: An uninsulated section comprising a first section element and a second section element is described; the first section element comprises a first cavity for housing a portion of a first heat-insulating body and a second cavity for housing a portion of a second heat-insulating body; the second section element comprises a third cavity for housing another portion of the first heat-insulating body and a fourth cavity for housing another portion of the second heat-insulating body. The uninsulated section also comprises a partition connecting the first section element and the second section element. Advantageously, the partition may be situated between the first and the second cavity and between the third and the fourth cavity.

Abstract: The invention relates to a method and an aluminium alloy sheet material. The method of producing aluminium alloy sheet material comprising the following steps: continuous strip casting of a sheet at a predetermined solidification rate ensuring material microstructure exhibiting primary particles having average size below 1 micrometer2, and (cold) rolling of the strip cast sheet to an appropriate gauge with optionally intermediate annealing during the cold rolling. It is an object of the present invention to provide a novel method of production of Al-alloy sheets applicable on heat exchanger sheet based components resulting in improved pitting corrosion applying (base) Al-alloy material with higher Fe-content.

Abstract: A method for coordinating a floating wind turbine installation. The wind turbine installation includes a buoyant body (1), a tower (2) arranged over the buoyant body, a generator (3) mounted on the tower which is rotatable in relation to the wind direction and fitted with a wind rotor (4), and an anchor line arrangement (5) connected to anchors or anchor points on the sea bed. Static heeling, ?s—max, at full wind load on the wind turbine is as low as possible, but preferably less than 8 degrees, and all eigenperiods for the installation are outside the waves' period range. The eigenperiod in pitch, T05 (roll, T04), is preferably less than 80% of the T03 eigenperiod in heave. Moreover, the ratio between T03 and T05 is not close to 0.5 or 1.

Abstract: A method and a device in connection with an actuator intended for use in connection with a fluid flow or fluid reservoir, in particular an actuator that is designed to be used in connection with a drainage pipe (8) for the production of oil and/or gas in an oil and/or gas reservoir. An osmotic cell (9) is used to operate the actuator (10). The osmotic cell is placed in the fluid flow, whereby the necessary force and motion for the actuator (10) to adjust or drive a fluid control device or valve are achieved by utilizing the osmotic pressure difference between the solution in the cell (9) and an external fluid flow/reservoir in relation to the cell.

Abstract: A method for determining electrical properties of a submarine petroleum fluid-bearing formation (1) under overburden geological layers (2) of thickness (s) under a seafloor (3) of a sea. The method includes: *arranging one or more transmitter antennas (9) in the sea, and arranging one or more electromagnetic receivers (8) in the sea, *the sea having a shallow sea depth (d) of 50-350 meters; *using the transmitter antenna (9) transmitting electromagnetic signals (10) of one or more pulses (11) having frequency of very low frequency between 0.01 Hz and 0.

Abstract: A device or arrangement for cleaning a pipe separator (1) in which the separator body (2) includes an extended, tubular body with an inlet (4) and an outlet (5) having essentially the same diameter as the separator body. At the outlet, there is a bend or a loop (3) designed to maintain a fluid level in the separator. Just before the bend, there is an outlet (6) with an outlet pipe (9) for conducting fluid, e.g. water, from the separator. Sand or other particulate materials introduced into the outlet (6) are returned, using a pump (7) arranged on the outlet pipe (9), together with the fluid from the outlet, to the separator after the bend (3) by means of reversal with a valve (8) via a return pipe (11). In connection with the outlet (6), there is a flushing device having a pipe loop (12) connected to the outlet pipe (9) for the return of fluid from the outlet to the nozzles (14) arranged in the outlet.

Abstract: Gas tight tubular joint or connection, particularly related to mono diameter tubular body in the form of a pipe or casing being used in connection with the production of oil and/or gas, where the pipes or casings are manufactured from tubular sections and where the tubular sections, after being interconnected at their respective ends, are finally formed by expansion. The pipes or casings are formed from at least two, one outer and one inner tubular section. The ends of each of said respective section is overlapping the next, succeeding tubular section, whereby one or more of the inner, intermediate or outer tubular sections are of different metallic materials and/or different thickness, and under the deformation process, is plastified or plastically deformed in the overlapping zone forming a metallic seal and thereby providing gas pressure integrity between the inside and outside of the expanded tubular pipe/casing.