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Porsgrunn, Norway

Norsk Hydro ASA is a Norwegian aluminium and renewable energy company, headquartered in Oslo. Hydro is one of the largest aluminium companies worldwide. It has operations in some 50 countries around the world and is active on all continents. The Norwegian state holds a 34.3 percent ownership interest in the company, which employs approximately 12,500 people. Svein Richard Brandtzæg has been the CEO since 2009.The company had a significant presence in the oil and gas industry until October 2007, when these operations were merged with rival Statoil to form StatoilHydro . Wikipedia.


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.


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.


Patent
Norsk Hydro | Date: 2012-09-06

Pre-flux coating for the manufacturing of components by brazing, in particular manufacturing of heat exchangers of aluminium components including one or more fluxes and filler material. The coating is composed of one ore more fluxes in the form of potassium aluminum fluoride K1-3AIF4.6, potassium trifluoro zincate, KZnF3, lithium aluminum fluoride Li3AIF6, filler material in the form of metallic Si particles, AlSi particles and/or potassium fluoro silicate K2S1F6, and additive in the form of alumminium oxide and/or other suitable oxide or material forming a post braze ceramic layer, and further including solvent and binder containing at least 10% by weight of a synthetic resin which is based, as its main constituent, on methacrylate homopolymer or methacrylate copolymer.


Patent
Norsk Hydro | Date: 2013-04-25

Extrudeable AlMgSi aluminium alloy with improved strength, corrosion resistance, crush properties and temperature stability, in particular useful in or close to the front part of vehicles. The composition of the alloy is defined within the following coordinate points of an MgSi diagram: a1-a2-a3-a4, where in wt % a1=0.60 Mg, 0.65Si, a2=0.90Mg, 1.0Si, a3=1.05Mg, 0.75Si and a4=0.70Mg, 0.50Si and where the alloy has a non-recrystallised grain structure in the extruded profile containing in addition the following alloy components in wt %: Fe up to 0.30 Cu 0.1-0.4 Mn 0.4-1.0 Cr up to 0.25 Zr up to 0.25 and Ti 0.005-0.15 incidental impurities up to 0.1 each and including Zn up to 0.5 with balance Al.


Patent
Norsk Hydro | Date: 2012-10-08

Method for manufacturing tube fm heat exchangers, (TFP), by brazing metal components of mainly aluminium or aluminium alloys including the following steps:making the components of the TFP heat exchanger including the tubes (

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