{"id":676,"date":"2020-05-05T09:12:15","date_gmt":"2020-05-05T09:12:15","guid":{"rendered":"https:\/\/aluminiumceramicfiber.com\/?p=676"},"modified":"2020-09-15T07:24:52","modified_gmt":"2020-09-15T07:24:52","slug":"aluminium-filtration","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/aluminium-filtration\/","title":{"rendered":"Penyaringan Aluminium"},"content":{"rendered":"

Penggunaan coran paduan aluminium semakin meningkat, dan persyaratan terhadap coran tersebut pun semakin tinggi. Selain memastikan komposisi kimia, sifat mekanik, dan ketepatan dimensi. Pengecoran paduan aluminium tidak boleh memiliki cacat pengecoran, seperti lubang penyusutan, lubang udara, dan lubang terak. Perawatan pemurnian aluminium cair merupakan salah satu langkah untuk memastikan produk paduan aluminium berkualitas tinggi. Dan ini juga merupakan cara utama untuk meningkatkan kualitas keseluruhan paduan aluminium. Efek pemurnian aluminium cair memiliki pengaruh penting terhadap pembentukan pori-pori, lubang penyusutan, dan inklusi. Hal ini secara langsung memengaruhi sifat fisik dan mekanis coran paduan aluminium. Filtrasi aluminium AdTech dan peralatan penghilang gas<\/a> dapat menghasilkan efek penghilangan kotoran dan penghilangan gas, sehingga dapat meningkatkan kualitas aluminium secara keseluruhan.<\/p>\n

Tanpa cairan aluminium berkualitas tinggi, sulit untuk menghasilkan coran berkualitas tinggi. Meskipun proses pengolahan selanjutnya sudah canggih, begitu cacat terbentuk, cacat tersebut akan tetap ada pada produk. Oleh karena itu, kita harus memperhatikan gas dan inklusi dalam cairan aluminium, serta mengambil langkah-langkah untuk menghilangkan gas dan inklusi tersebut.<\/p>\n

\"Penyaringan<\/p>\n

Pentingnya Penyaringan Aluminium<\/h2>\n

Cairan aluminium mengandung berbagai kotoran, sehingga perlu dimurnikan sebelum dituang. Industri ini umumnya menggunakan metode pemurnian seperti klarifikasi, fluks, gas, dan sebagainya.<\/p>\n

Gas yang terdapat dalam aluminium cair sebagian besar berupa hidrogen (sekitar 80%\u201390%). Hidrogen hampir tidak larut dalam aluminium padat, tetapi sangat larut dalam aluminium cair. Kandungan hidrogen normal per 100g aluminium cair adalah 0,1\u20130,4 mL. Karena perbedaan kelarutan tersebut, hidrogen cenderung keluar dari cairan aluminium. Ketika tekanan hidrogen lebih besar daripada tegangan permukaan dan tekanan hidrostatik, gelembung terbentuk, yang pada gilirannya menyebabkan lubang-lubang kecil pada coran. Oleh karena itu, dalam hal pemurnian logam cair paduan aluminium, masalah utamanya adalah tingginya kandungan hidrogen dalam paduan aluminium. Selain itu, metode yang ada saat ini tidak dapat memenuhi persyaratan produksi coran paduan aluminium berkualitas tinggi.<\/p>\n

Secara umum, kandungan hidrogen per 100 g aluminium pada dasarnya dapat memenuhi persyaratan produksi jika nilainya berkisar antara 0,1 hingga 0,2 mL. Untuk coran dengan persyaratan khusus (seperti coran untuk industri penerbangan), kandungan hidrogen per 100 g aluminium harus kurang dari 0,06 mL. Pengotor non-logam yang umum terdapat dalam aluminium cair adalah oksida, nitrida, karbida, borida, dan sebagainya. Sebagian besar pengotor tersebut terdapat dalam bentuk partikel, dengan ukuran partikel yang umumnya berkisar antara 1\u201330 \u03bcm.<\/p>\n

Terdapat interaksi yang kuat antara inklusi dan gas dalam paduan aluminium. Kandungan hidrogen sangat dipengaruhi oleh inklusi. Ketika kandungan inklusi sebesar 0,002% dan 0,02%, kandungan hidrogen yang sesuai adalah 0,2 mL\/100 gAl dan 0,35 mL\/100 gAl. Pada kandungan hidrogen yang sama, semakin tinggi kandungan inklusi, semakin tinggi pula tingkat lubang jarum. Sebaliknya, ketika kandungan pengotor dalam aluminium cair sangat rendah, kandungan hidrogennya juga sangat rendah. Oleh karena itu, menghilangkan pengotor dan menghilangkan gas secara bersamaan sama-sama penting.<\/p>","protected":false},"excerpt":{"rendered":"

The use of aluminum alloy castings is increasing, and the requirements for castings are becoming higher and higher. In addition to ensuring chemical composition, mechanical properties and dimensional accuracy. The aluminum alloy castings are not allowed to have casting defects, such as shrinkage holes, air holes, and slag holes. Liquid aluminum purification treatment is one […]<\/p>\n","protected":false},"author":1,"featured_media":677,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[63,62,39,64],"class_list":["post-676","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-aluminium-filtration","tag-cff-filter-box","tag-degassing-unit","tag-liquid-aluminum-purification-treatment"],"yoast_head":"\nAluminium Filtration and Liquid Aluminum Purification Treatment<\/title>\n<meta name=\"description\" content=\"Aluminium filtration and degassing equipment can achieve the effect of removing impurities and degassing to obtain the high quality aluminum.\" \/>\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.aluminiumceramicfiber.com\/id\/aluminium-filtration\/\" 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