منابع مشابه
Cutting Aluminium Coils with High Length VariabilitiesChristoph
A case study of a cutting stock problem in an aluminium mill is presented. Orders have release dates, due dates, a total length and may be delivered in any number of coils within rather large length intervals. A variety of diierent cutting machines is available, hierarchical cuts may be necessary to produce small widths. The mill is capable of producing custom{made coils within certain bounds b...
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It is proposed to apply high-temperature superconducting (HTS) tape in the coil windings for induction heaters for aluminium or copper extrusion billets. The potential for efficiency improvements is substantial, as conventional copper coil induction heaters rated for up to around 1 MW operate with an overall efficiency of typically only 50–60%. The efficiency of a HTS induction heater depends v...
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The technically pure copper is being replaced by aluminium as conductive material in electrical transformers for power systems. This evolution brings new manufacturing challenges. One major difficulty is the limited weld ability and non-acceptable residual deformations of the aluminium, when welded by fusion arc welding processes. The Friction Stir Welding (FSW) was selected for evaluation cons...
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ژورنال
عنوان ژورنال: Nature
سال: 1882
ISSN: 0028-0836,1476-4687
DOI: 10.1038/026245b0