{"id":3474,"date":"2018-08-07T03:37:22","date_gmt":"2018-08-07T03:37:22","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=3474"},"modified":"2018-08-07T03:37:39","modified_gmt":"2018-08-07T03:37:39","slug":"molten-metal-cleanliness-casting-aluminium","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/tr\/molten-metal-cleanliness-casting-aluminium\/","title":{"rendered":"Al\u00fcminyum D\u00f6k\u00fcm\u00fcnde Erimi\u015f Metalin Safl\u0131\u011f\u0131"},"content":{"rendered":"

Al\u00fcminyum D\u00f6k\u00fcm\u00fcnde Erimi\u015f Metalin Safl\u0131\u011f\u0131<\/strong><\/p>\n

Al\u00fcminyum ala\u015f\u0131mlar\u0131, d\u00fc\u015f\u00fck \u00f6zg\u00fcl a\u011f\u0131rl\u0131klar\u0131, d\u00fc\u015f\u00fck erime noktalar\u0131, hidrojen hari\u00e7 ihmal edilebilir d\u00fczeyde gaz \u00e7\u00f6z\u00fcn\u00fcrl\u00fc\u011f\u00fc, m\u00fckemmel d\u00f6k\u00fcm \u00f6zellikleri, iyi i\u015flenebilirlik ve iyi korozyon direnci ile karakterize edilir. Otomotiv ve havac\u0131l\u0131k sekt\u00f6rlerinde kullan\u0131lan kritik yap\u0131sal bile\u015fenler i\u00e7in \u00fcst\u00fcn kaliteli d\u00f6k\u00fcmler vazge\u00e7ilmez bir gerekliliktir. Bu t\u00fcr d\u00f6k\u00fcmlerin \u00fcretimi, mekanik \u00f6zellikler \u00fczerindeki zararl\u0131 etkilerini bast\u0131rmak amac\u0131yla kal\u0131nt\u0131lar\u0131n ve g\u00f6zeneklili\u011fin en aza indirilmesini (hatta ortadan kald\u0131r\u0131lmas\u0131n\u0131) gerektirir; b\u00f6ylece bu \u00f6zellikler esas olarak d\u00f6k\u00fcmlerin mikroyap\u0131s\u0131 taraf\u0131ndan belirlenir.<\/p>\n

Al\u00fcminyum D\u00f6k\u00fcm\u00fcnde Erimi\u015f Metalin Safl\u0131\u011f\u0131<\/strong>
\nAl\u00fcminyum ala\u015f\u0131mlar\u0131nda sert, metalik olmayan kal\u0131nt\u0131lar\u0131n bulunmas\u0131, sadece nihai \u00fcr\u00fcn\u00fcn mekanik \u00f6zelliklerini bozmakla kalmaz, ayn\u0131 zamanda bas\u0131n\u00e7l\u0131 d\u00f6k\u00fcm s\u00fcrecinde a\u015fa\u011f\u0131dakiler de dahil olmak \u00fczere bir dizi ba\u015fka i\u015flemeyle ilgili soruna da yol a\u00e7abilir:<\/strong><\/p>\n

\u2022 d\u00f6k\u00fcm\u00fcn mekanik \u00f6zelliklerinde azalma
\nKal\u0131nt\u0131 i\u00e7eri\u011finin artmas\u0131yla birlikte hem \u00e7ekme mukavemeti hem de uzama oran\u0131 \u00f6nemli \u00f6l\u00e7\u00fcde azal\u0131r. Genel olarak, saf metal, y\u00fcksek \u00e7ekme \u00f6zellikleriyle (akma mukavemeti, kopma mukavemeti, uzama y\u00fczdesi) karakterize edilir.<\/p>\n

\u2022 i\u015flenebilirli\u011fin yetersiz olmas\u0131 ve y\u00fcksek tak\u0131m a\u015f\u0131nmas\u0131
\nD\u00f6k\u00fcmde s\u0131kl\u0131kla rastlanabilen baz\u0131 kal\u0131nt\u0131lar, k\u0131r\u0131lgan ve son derece sert seramik par\u00e7ac\u0131klard\u0131r. Baz\u0131 kal\u0131nt\u0131lar\u0131n sertli\u011fi, elmas\u0131n 10 olarak kabul edildi\u011fi Mohs \u00f6l\u00e7e\u011finde \u00f6l\u00e7\u00fclebilir. Ala\u015f\u0131m eriyi\u011fi, d\u00f6k\u00fcmden \u00f6nce s\u00fczme yoluyla temizlendi\u011finde, i\u015flenebilirlik olduk\u00e7a \u00f6nemli \u00f6l\u00e7\u00fcde artar.<\/p>\n

\u2022 ak\u0131\u015fkanl\u0131k ve besleme \u00f6zelliklerinin kayb\u0131
\nErimi\u015f metaldeki kal\u0131nt\u0131lar ak\u0131\u015fkanl\u0131\u011f\u0131n azalmas\u0131na neden olur. Filtrasyon yoluyla temiz erimi\u015f metal elde etmek, normal \u00e7al\u0131\u015fma s\u0131cakl\u0131klar\u0131nda ak\u0131\u015fkanl\u0131\u011f\u0131 %\u2019ye varan oranda \u00f6nemli \u00f6l\u00e7\u00fcde art\u0131rabilir.<\/p>\n

\u2022 artan gaz g\u00f6zeneklili\u011fi
\nAl\u00fcminyum ala\u015f\u0131m\u0131 eriyiklerinde \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojen seviyesi, kat\u0131la\u015fma s\u0131ras\u0131nda gaz g\u00f6zeneklili\u011finin olu\u015fumundan sorumlu ana fakt\u00f6rd\u00fcr. Erimi\u015f al\u00fcminyumda hidrojenin \u00e7\u00f6z\u00fcn\u00fcrl\u00fck s\u0131n\u0131r\u0131 olduk\u00e7a y\u00fcksektir, ancak
\nMetal kat\u0131la\u015f\u0131r ve bu da gaz g\u00f6zeneklerinin olu\u015fmas\u0131na yol a\u00e7ar. Kat\u0131la\u015fma sonras\u0131 olu\u015fan gaz g\u00f6zenekleri, yaln\u0131zca erimi\u015f metaldeki hidrojen i\u00e7eri\u011fine de\u011fil, ayn\u0131 zamanda metalin temizli\u011fine de ba\u011fl\u0131d\u0131r. Oksitler, g\u00f6zenek \u00e7ekirdeklenme noktalar\u0131 olarak i\u015flev g\u00f6r\u00fcr ve hidritler
\nso\u011fuduk\u00e7a ayr\u0131\u015farak \u00e7\u00f6z\u00fcnm\u00fc\u015f hidrojen olu\u015fturur.<\/p>\n

\u2022 Y\u00fczey kalitesinin yetersiz olmas\u0131 ve bas\u0131n\u00e7 s\u0131zd\u0131rmazl\u0131\u011f\u0131n\u0131n olmamas\u0131
\n\u0130nce folyolardaki i\u011fne deli\u011fi benzeri kusurlar ve litografik plakalardaki jilet izleri gibi al\u00fcminyum \u00fcr\u00fcnlerindeki kusurlar genellikle kal\u0131nt\u0131lardan kaynaklan\u0131r. Etkin \u00e7ap\u0131 10\u201320 \u03bcm aral\u0131\u011f\u0131nda olan kal\u0131nt\u0131lar, milyonda birka\u00e7 par\u00e7a gibi bir konsantrasyonda bile haddelenmi\u015f al\u00fcminyum \u00fcr\u00fcnlerinde zararl\u0131 olabilir.<\/p>\n

\"Al\u00fcminyum<\/p>\n

ADTECH<\/a> Uluslararas\u0131 Enterprise\u2019\u0131n izinden giden \u00f6nc\u00fclerden biridir ve metalurjik malzeme \u00fcretimine odaklanmaya devam etmektedir.
\n1. Seramik K\u00f6p\u00fck Filtre
\n2. Gaz Giderme \u00dcnitesi
\n3. Filtre Kutusu
\n4. S\u0131cak \u00fcst d\u00f6k\u00fcm serisi
\n5. Rulo d\u00f6k\u00fcm nozulu
\n6. Flux serisi
\n7. Di\u011fer Metalurjik Malzemeler<\/p>","protected":false},"excerpt":{"rendered":"

Molten Metal Cleanliness When Casting Aluminium Aluminum alloys are characterized by their low specific weight, low melting point, negligible gas solubility with the exception of hydrogen, excellent castability, good machinability, and good corrosion resistance. Premium quality castings are an essential requisite for the critical structural…<\/p>","protected":false},"author":1,"featured_media":0,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[52],"tags":[],"yoast_head":"\nMolten Metal Cleanliness When Casting Aluminium<\/title>\n<meta name=\"description\" content=\"Molten Metal Cleanliness When Casting Aluminium Aluminum alloys are characterized by their low specific weight, low melting point, negligible gas......\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.adtechamm.com\/tr\/molten-metal-cleanliness-casting-aluminium\/\" \/>\n<meta property=\"og:locale\" content=\"tr_TR\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Molten Metal Cleanliness When Casting Aluminium\" \/>\n<meta property=\"og:description\" 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