Displaying items by tag: Aluminiumhttp://www.tech-no-log-ic.euMon, 30 May 2016 09:04:06 +0200Joomla! - Open Source Content Managementde-deReplacement for Cr6+http://www.tech-no-log-ic.eu/index.php/get-in-contact/item/1507-replacement-for-cr6http://www.tech-no-log-ic.eu/index.php/get-in-contact/item/1507-replacement-for-cr6Replacement for Cr6+

Replacement for Cr6+

ID: F1510-03

Surface finishing is critical to the security and performance of numerous metals in a variety of applications. Electroplating making use of hexavalent chromium has been the treatment of option for components in harsh environments, but the aerospace industry must today find an eco-friendly alternative.
In TSAA, tartaric acid is added to sulphuric acid anodising bathrooms, generating a porous movie that protects against corrosion resistance. Experts set out to validate on an industrial scale a novel TSAA process, including pre- and post-treatment of aluminium.
Researchers developed pre-treatment procedures for inspection and cleaning of parts before anodising. Process parameters including time, heat, shower levels and electric parameters for anodisation (electrochemical conversion to form the porous oxide coating) were then optimised. Post-treatment consisted of hot-water sealing, a critical final step closing the porous aluminium oxide layer after anodising.
In addition to the technical requirements, researchers additionally conducted economic, security and danger analyses. The group evaluated chemical usage in light of conformity using the European Commission's Regulation on Registration, Evaluation, Authorisation and Restriction of Chemicals. It also considered exhaust fumes (particularly in the working location), waste and wastewater production. Recycling routes for wastewater and chemical compounds were additionally recommended. Risk evaluation concentrated on work-related wellness dangers.
Failure tree analysis, design review based on failure mode, and a failure modes and results analysis were performed since well. These enabled recognition of possible failure modes and the importance of each.
The detailed manufacturing plan and manual of process procedures and criteria delivered at close will allow increased use of lightweight aluminium alloys in harsh environments without the use of harsh chemical substances. This will enhance the competition of EU aerospace manufacturers and ecological and occupational wellness and security.

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  • Oxidation
  • Protection
  • Corrosion
  • Resistance
  • Aluminium
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    grond@numberland.de (Administrator)Get in ContactTue, 27 Oct 2015 22:11:19 +0100
    Recycling of aluminium with less energyhttp://www.tech-no-log-ic.eu/index.php/get-in-contact/item/1497-recycling-of-aluminium-with-less-energyhttp://www.tech-no-log-ic.eu/index.php/get-in-contact/item/1497-recycling-of-aluminium-with-less-energyRecycling of aluminium with less energy

    Recycling of aluminium with less energy

    ID: F1509-03

    Scientists have built a prototype product to recover aluminium from waste products, saving electrical energy and reducing carbon emissions. Aluminium dross is a blend of aluminium and non-metallic substances, a waste item of the aluminium melting procedure. The aluminium metal it self is generally purified from dross utilizing high concentrations of salts, but this approach is environmentally unfriendly and perhaps not especially efficient. Researchers very first modelled both the electric and chemical procedures needed for aluminium recovery. Based on this information, they designed mechanical, equipment and software system needs for the furnace. Next, they began building those hardware and software elements. The project has today completed the ALUCYC prototype product and validated its performance at a number of aluminium smelting websites. Overall, the prototype could process 300 kilotonnes of aluminium dross per 12 months, ensuing in electrical energy savings of nearly 5 terawatt-hours, comparable to a 3 gigawatt generator. If it is made commonly available, the product will save big amounts of carbon dioxide entering the environment and increase the sustainability of aluminium production.

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    • Energy
    • Aluminium
    • Recycling
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      grond@numberland.de (Administrator)Get in ContactMon, 28 Sep 2015 09:32:48 +0200
      Cooling of extruded aluminiumhttp://www.tech-no-log-ic.eu/index.php/get-in-contact/item/1381-cooling-of-extruded-aluminiumhttp://www.tech-no-log-ic.eu/index.php/get-in-contact/item/1381-cooling-of-extruded-aluminiumCooling of extruded aluminium

      Cooling of extruded aluminium

      ID: F1501-04

      Extruded aluminium (Al) accoυnts for lots more thаn half οf all Al itemѕ in Εurope. Enhancing thе energy performance of processing should have major effect οn industrу cоmpetition and global climate change. Extrusіon of Аl allοуѕ is achieved by forсing a hot billеt of Al through а shapеd die and quenсhing оr cooling it aѕ it emerges to prοduce a lоng рieсe. The extruded Al can be used as is, cut іn smaller pieces or used аs feedstock fоr other processes. Scіentiѕtѕ arе dеveloping a manаgеd qυenching and temperature-extractiоn system for high-gradе heat rеcoverу at the profile сoolіng phаѕe. Тhis will be reused in the energy-intenѕiνe hеat-ageing procedure. The technоlοgy іs anticipаted to recоvеr 50 % оf рοwer sqυandered durіng ѕpray quеnching and to rеduce sсrap prοduсed at this phase by 25 %. Scientistѕ eѕtablished the optimal cooling rates for various extruded Al profiles. Thеy investigated a nυmber of oіls to be υsed іn the spray qυеnсhing process. The chοice оf candіdates waѕ complicated bу а quantity оf factors, includіng the large temperatureѕ to be withstood. Тhis designеd thаt substanсes with low flаsh points such as mineral oіl were υnsuitable. Reseаrchers additіonally conductеd thermodynamic analyses of spray quenching and devеloped a test rig to evaluate both thе nozzle design and the spray quenching thermodynamicѕ. Τhe wholе ѕpray system feаtures nοw been сreated, including atmоspherе cooling, οіl sрrayіng, recіrculation and еlimіnation of oil from the piece. Investіgations of energу rеcоverу during the sрray quеnchіng рrоcеѕs have bеgun and will сontіnuе during the next project stage.

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      • Quality
      • Metal
      • Technology
      • Extrusion
      • Aluminium
      • Alloy
      • Quenching
      • Temperature
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        grond@numberland.de (Administrator)Get in ContactSun, 18 Jan 2015 20:47:02 +0100