{"id":102,"date":"2017-12-28T15:27:16","date_gmt":"2017-12-28T12:27:16","guid":{"rendered":"https:\/\/metallsmaster.ru\/?p=102"},"modified":"2021-08-21T12:40:58","modified_gmt":"2021-08-21T09:40:58","slug":"alyuminij-i-splavy","status":"publish","type":"post","link":"https:\/\/metallsmaster.pro\/it\/alyuminij-i-splavy\/","title":{"rendered":"Alluminio e leghe"},"content":{"rendered":"<p><strong>Alluminio <\/strong>Viene utilizzato per produrre vari componenti e leghe a base di esso. Durante lo studio e l&#039;applicazione di questo metallo, \u00e8 stata sviluppata una tecnologia per la sua lavorazione. La lega viene utilizzata per conferire al materiale le propriet\u00e0 desiderate. Questo processo prevede lo stato fuso, <strong>alluminio <\/strong>mescolato con fusioni di elementi aggiuntivi.<\/p>\n<blockquote><p>Citylom offre i migliori prezzi per il riciclaggio dell&#039;ottone a Mosca e nella regione di Mosca:\u00a0<a href=\"https:\/\/citylom.ru\/priem-alyuminiya\" target=\"_blank\" rel=\"noopener\" data-saferedirecturl=\"https:\/\/www.google.com\/url?q=https:\/\/citylom.ru\/priem-alyuminiya&amp;source=gmail&amp;ust=1629624898245000&amp;usg=AFQjCNEGddns1_KUA5mnf5y_ICXvVs3ULg\">https:\/\/citylom.ru\/priem-<wbr \/>alluminio<\/a><\/p><\/blockquote>\n<p>Questo processo migliora la qualit\u00e0 dei prodotti metallurgici. A seconda delle proporzioni scelte e degli elementi complementari, le propriet\u00e0 chimiche, meccaniche e fisiche del metallo cambiano. Oggi, il metallo puro <strong>alluminio<\/strong> A causa della sua scarsa resistenza, non \u00e8 praticamente utilizzato nell&#039;industria. Tuttavia, le leghe hanno trovato ampio impiego e le loro proporzioni e tecnologie di lavorazione sono in continuo miglioramento. <strong>Saldatura dell&#039;alluminio<\/strong> Viene eseguita utilizzando una macchina ad arco a punti o ad argon; viene utilizzata anche la saldatura ad arco elettrico.<\/p>\n<h2>\n\t<!--<div class='top-banner-pages'>\t\n\n\t<\/div>--->\n\t<\/h2>\n<h2>Propriet\u00e0 di base dell&#039;alluminio<\/h2>\n<p>I fattori principali che determinano l&#039;ampia gamma di utilizzo di un materiale sono le sue propriet\u00e0 e gli indicatori di prestazione. <strong>Leghe a base di alluminio<\/strong> sono utilizzati in quasi tutti i settori di attivit\u00e0. La semplice ragione di tale prevalenza \u00e8 <strong>Propriet\u00e0 di base dell&#039;alluminio<\/strong>, che sono elencati.<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>densit\u00e0 - 2,7 g\/cm\u00b3<\/li>\n<li>il punto di fusione dell&#039;alluminio tecnico \u00e8 658 \u00b0C;<\/li>\n<li>il punto di fusione dell&#039;alluminio puro \u00e8 660 \u00b0C;<\/li>\n<li>calore specifico di fusione: 390 kJ\/kg;<\/li>\n<li>punto di ebollizione - 2500 \u00b0C;<\/li>\n<li>calore specifico di evaporazione: 10,53 MJ\/kg;<\/li>\n<li>capacit\u00e0 termica specifica: 880 J\/kg\u00b7K;<\/li>\n<li>la resistenza alla trazione dell&#039;alluminio fuso \u00e8 10-12 kg\/mm\u00b2, la resistenza alla trazione dell&#039;alluminio deformato \u00e8 18-25 kg\/mm\u00b2, la resistenza alla trazione delle leghe \u00e8 38-42 kg\/mm\u00b2;<\/li>\n<li>Durezza Brinell: 24...32 kgf\/mm\u00b2;<\/li>\n<li>plasticit\u00e0 di grado tecnico - 35 %;<\/li>\n<li>plasticit\u00e0 di puro - 50 %;<\/li>\n<li>Modulo di Young: 70 GPa;<\/li>\n<li>L&#039;alluminio ha un&#039;elevata conduttivit\u00e0 elettrica (37 10<sup>6<\/sup>\u00a0Cm\/m) e conduttivit\u00e0 termica (203,5 W\/(m K)), 65 % dalla conduttivit\u00e0 elettrica del rame, ha un&#039;elevata riflettivit\u00e0 della luce;<\/li>\n<li>Paramagnetico debole;<\/li>\n<li>Coefficiente termico di dilatazione lineare 24,58\u00b710<sup>-6<\/sup>A<sup>-1<\/sup>\u00a0(20\u2026200 \u00b0C);<\/li>\n<li>Resistenza specifica 0,0262..0,0295 Ohm mm\u00b2\/m;<\/li>\n<li>Coefficiente di temperatura della resistenza elettrica 4,3 x 10<sup>-3<\/sup>K<sup>-1<\/sup>L&#039;alluminio entra nello stato superconduttore a una temperatura di 1,2 Kelvin.<\/li>\n<\/ul>\n<p>Una propriet\u00e0 importante che distingue <strong>leghe a base di alluminio<\/strong> \u2014 elevata duttilit\u00e0. Pu\u00f2 essere facilmente laminato in fogli, il che \u00e8 particolarmente importante per l&#039;impiego in elettronica ed elettrotecnica. Il materiale pu\u00f2 essere facilmente lavorato con basse forze meccaniche. Il suo basso punto di fusione consente la rifusione e la fabbricazione di componenti in lega di alluminio con un consumo energetico minimo, riducendo i costi di produzione e il costo del prodotto stesso.<\/p>\n<h3>\n<!---<div class='top-banner-pages'>\n\n<\/div>-->\n\n\t<\/h3>\n<h3>Gradi di alluminio secondo GOST<\/h3>\n<p><strong>Alluminio<\/strong> e le sue leghe, come altri metalli, sono etichettate secondo standard stabiliti. Pertanto, ci sono <strong>gradi di alluminio secondo GOST, <\/strong>che sono riportati negli elenchi.<\/p>\n<p><strong>Leghe di alluminio lavorato:<\/strong><\/p>\n<p>Tempra trattata termicamente:<\/p>\n<ul>\n<li><strong>Duralluminio <\/strong>D1, D16, D20*, leghe alluminio-rame-manganese [Al-Cu-Mg];<\/li>\n<li>Lega avial (AV);<\/li>\n<li>Lega ad alta resistenza (B95);<\/li>\n<li>Leghe per forgiatura e stampaggio (AK6, AK8, AK4-1 [resistenti al calore]).<\/li>\n<\/ul>\n<p>Non induribile mediante trattamento termico:<\/p>\n<ul>\n<li>Leghe di alluminio-manganese (AMt);<\/li>\n<li>Leghe di alluminio con magnesio (AMg2, AMg3, AMg5, AMg6).<\/li>\n<\/ul>\n<p><strong>Fusione di leghe di alluminio per getti sagomati:<\/strong><\/p>\n<ul>\n<li>Leghe di alluminio-silicio (<strong>silumin \/<\/strong>) Al-Si (AL2, AL4, AL9) - elevata densit\u00e0 di getti, facile da tagliare, caratterizzato da elevate prestazioni lineari;<\/li>\n<li>Leghe di alluminio-rame Al-Cu (AL7, AL19) - elevate propriet\u00e0 meccaniche dopo il trattamento termico, facili da lavorare;<\/li>\n<li>Leghe di alluminio-magnesio Al-Mg (AL8, AL27) - maggiore resistenza alla corrosione, propriet\u00e0 meccaniche migliorate, facili da lavorare;<\/li>\n<li>Leghe di alluminio resistenti al calore (AL1, AL21, AL33): facili da tagliare, maggiore resistenza al calore.<\/li>\n<\/ul>\n<p><strong>Classificazione in base alla facilit\u00e0 di lavorazione meccanica <\/strong>(Morbido e duttile, difficile da lavorare):<\/p>\n<ul>\n<li>Ricotto - D16, AB;<\/li>\n<li>Non indurito mediante trattamento termico - AMts, AMg2, AMg3, AMg5, AMg6.<\/li>\n<\/ul>\n<p>Leghe di alluminio relativamente resistenti e dure, abbastanza facili da lavorare:<\/p>\n<ul>\n<li>Temprato e invecchiato artificialmente: D16T, D16N, AVT;<\/li>\n<li>Forgiatura: AK6, AK8, AK4-1;<\/li>\n<li>Fonderia: AL2, AL4, AL9, AL8, AL27, AL1, AL21, AL33.<\/li>\n<\/ul>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"wp-image-103 size-full aligncenter\" src=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2017\/12\/alluminii_3.webp\" alt=\"Alluminio\" width=\"275\" height=\"275\" srcset=\"https:\/\/metallsmaster.pro\/wp-content\/uploads\/2017\/12\/alluminii_3.webp 275w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2017\/12\/alluminii_3-150x150.webp 150w, https:\/\/metallsmaster.pro\/wp-content\/uploads\/2017\/12\/alluminii_3-190x190.webp 190w\" sizes=\"auto, (max-width: 275px) 100vw, 275px\" \/><\/p>","protected":false},"excerpt":{"rendered":"<p>L&#039;alluminio viene utilizzato per produrre vari componenti e leghe a base di esso. Nel processo di studio...<\/p>","protected":false},"author":1,"featured_media":103,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[5],"tags":[],"class_list":["post-102","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-cvetnye-metally"],"aioseo_notices":[],"aioseo_head":"\n\t\t<!-- All in One SEO 5.0.1.1 - aioseo.com -->\n\t<meta name=\"description\" content=\"\u0410\u043b\u044e\u043c\u0438\u043d\u0438\u0439, \u043e\u0441\u043d\u043e\u0432\u043d\u044b\u0435 \u0441\u0432\u043e\u0439\u0441\u0442\u0432\u0430 \u043c\u0435\u0442\u0430\u043b\u043b\u0430 \u0438 \u0435\u0433\u043e \u0441\u043f\u043b\u0430\u0432\u043e\u0432, \u043a\u043b\u0430\u0441\u0441\u0438\u0444\u0438\u043a\u0430\u0446\u0438\u044f \u0438 \u043c\u0430\u0440\u043a\u0438\u0440\u043e\u0432\u043a\u0430\" \/>\n\t<meta name=\"robots\" content=\"max-image-preview:large\" \/>\n\t<meta name=\"author\" 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