Abstract: A metal tube including at least one metal profile arranged so that the at least one metal profile forms at least one channel for conduction of a fluid, wherein the at least one metal profile includes a first and a second portion joined with each other by clad-rolling, wherein the clad rolled portions jointly form a clad-rolled seal that holds the at least one metal profile together.

Abstract: A clad-rolling mill adapted to produce a metal tube. The clad-rolling mill includes a first and a second clad-roll arranged to jointly form a nip for clad-rolling. The first and the second clad-rolls are adapted to clad-roll one or more metal profiles arranged to form at least one channel for conduction of a fluid. The first and the second clad-rolls are shaped to clad-roll a first and a second portion of the one or more metal profiles to each other, so that the first and the second portions are joined with each other, wherein the first and the second portions form a seal that holds the one or more metal profiles together.

Abstract: The invention relates to a method for producing a contact terminal for electrical matters made of copper or a copper-base alloy in order to increase the reliability and lifetime of the contact terminal. According to the invention a textured structure is formed on the surface of the contact terminal by rolling of patterns. The invention also relates to a use of a textured structure based on cavities formed on the surface of a contact terminal for preserving a lubricant.

Abstract: A method for producing a metal tube including arranging at least one metal profile to form at least one channel for conduction of a fluid. The at least one metal profiled is fed into a clad-rolling mill. A first and second portion of the at least one metal profile are clad-rolled to each other, so that the first and the second portions are joined with each other. The first and the second portions form a seal that holds the at least one metal profile together and seals at least part of the channel. A clad-rolling mill is adapted to produce a metal tube and a metal tube.

Abstract: The invention relates to a copper alloy having high recrystallization temperature and good conductivity used in brazed heat exchangers which alloy consists of 0.1 to 0.3% in weight chromium. The invention also relates to a method for the manufacturing of the alloy which method consists of the following steps: casting, cold working, annealing and another cold working before brazing.

Abstract: The invention relates to a method for producing a metal alloy product (19) containing at least some amount of ?-phase brass by extrusion, a metal alloy product produced by extrusion of metal alloy containing at least some amount of ?-phase brass, an extrusion die (15) for extrusion of a metal alloy containing copper and zinc, and at least some amount of ?-phase, an extrusion device, and a use of a metal alloy for extrusion.

Abstract: The invention relates to a copper alloy having high recrystallization temperature and good conductivity used in brazed heat exchangers which alloy consists of 0.1 to 0.3% in weight chromium. The invention also relates to a method for the manufacturing of the alloy which method consists of the following steps: casting, cold working, annealing and another cold working before brazing.

Abstract: A process for producing a copper-nickel-silicon alloy having a yield strength above 90 ksi with an electrical conductivity above 50% IACS. The process includes melting and continuously casting raw material to obtain an alloy containing 1-3 wt. % nickel, 0.2 to 0.7 wt. % silicon, remainder copper and unavoidable impurities; cold delivering the alloy to form a cold-rolled alloy, solution annealing the cold-rolled alloy; cold rolling the annealed alloy; and precipitation annealing the cold-rolled annealed alloy at a temperature of 450-500 degrees C. for four to ten hours with a cooling rate of 10-20 degrees C. per hour.

Abstract: The invention relates to an apparatus for rolling a metallic product comprising a mill frame (18), a first cantilever roll shaft (19), a second cantilever roll shaft (20), both said roll shafts (19, 20) being mounted on the mill frame (18) with two sets of bearing assemblies (38, 39, 40, 41), a first rolling ring (21) mounted on the first roll shaft (19), a second rolling ring (22) mounted on the second roll shaft (20) said rolling rings (21, 22) forming a nip (23) in between, at least one ring (29) arranged with its inside surface (43) in rolling contact with the first roll shaft (19) and with at least one intermediate roll (27), which intermediate roll (27) is arranged also in rolling contact with the second roll shaft (20) and at least one drive end (42) arranged at the end of either roll shafts (19, 20) for driving the mill (16). The invention also relates to a method of producing a metallic product.

Abstract: A spiral winder is disclosed adapted to implement a new method for spirally winding a product of indefinite length, such as pipe, into a coil for packaging and/or transport to an end user. The spiral winder consists primarily of a rotor assembly (1) supporting a caster (7) such that product fed along the rotary axis to the caster (7) as the rotor (1) rotates is guided to the outlet from the caster to be deposited onto a pallet in the form of a planar spiral. By vertically indexing the pallet and reversing a radial motion of the caster outlet layers of planar spirals can be produced as a self supporting coil without the necessity of any internal mandrel or external retaining drum. By careful control of the stresses in the product as it passes to and from the caster (7) fragile product such as thin walled heat exchanger pipe can be coiled rapidly.

Abstract: A mould for continuously casting metal strips comprises a pair of side walls (11) on opposite sides of an open-ended mould cavity (C) having an entrance end (E) for continuously receiving molten metal and an exit end (D) for continuously discharging a moving solidified strip (D) formed from the molten metal. Each mould side wall (11) includes a graphite block (13) formed of a stack of a multiplicity of elongate graphite laminae (16) having opposite faces (16A) and inner edges (16B), said inner edges (16B) jointly forming a surface (16A) directed toward the mould cavity (C). The mould further comprises a cooling system associated with each graphite block (13) and including coolant tubes (15) extending through the stack transversely to said opposite faces (16A) of the graphite laminae (16) forming the stack.

Abstract: The invention relates to a welding current nozzle material used in the welding current nozzle for feeding filler material in MIG-type welding. The material used in the welding current nozzle according to the invention is a copper-based alloy where silver is alloyed.