{"id":6993,"date":"2021-09-23T09:15:34","date_gmt":"2021-09-23T09:15:34","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=6993"},"modified":"2021-09-23T09:15:34","modified_gmt":"2021-09-23T09:15:34","slug":"covering-flux-for-aluminum-melt","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/covering-flux-for-aluminum-melt\/","title":{"rendered":"Bahan Penutup Aliran untuk Logam Aluminium Cair"},"content":{"rendered":"<p>Ada dua metode umum untuk melindungi logam cair aluminium: yang pertama adalah menutupi permukaan logam cair tersebut dengan fluks penutup untuk membentuk lapisan yang terus-menerus; yang kedua adalah melindungi paduan tersebut, yaitu dengan menambahkan unsur paduan yang dapat teroksidasi ke dalam unsur-unsur paduan, sehingga membentuk lapisan oksida pelindung yang padat pada permukaan logam cair.<\/p>\n<p>Titik awal dari kedua metode perlindungan logam cair aluminium ini adalah membentuk permukaan inert, sehingga gas dan logam cair tidak berinteraksi atau aktivitas reaksi kimianya berkurang secara signifikan, guna mencapai tujuan perlindungan.<\/p>\n<p><img loading=\"lazy\" decoding=\"async\" class=\"alignnone size-full wp-image-6994\" src=\"https:\/\/aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/09\/Covering-Flux-for-Aluminum-Melt.jpg\" alt=\"Bahan Penutup Aliran untuk Logam Aluminium Cair\" width=\"500\" height=\"400\" srcset=\"https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/09\/Covering-Flux-for-Aluminum-Melt.jpg 500w, https:\/\/www.aluminiumceramicfiber.com\/wp-content\/uploads\/2021\/09\/Covering-Flux-for-Aluminum-Melt-300x240.jpg 300w\" sizes=\"auto, (max-width: 500px) 100vw, 500px\" \/><\/p>\n<p>Metode perlindungan cairan aluminium dengan lapisan penutup dapat diterapkan pada semua paduan aluminium. Metode ini tidak hanya mencegah cairan aluminium teroksidasi dan menyerap hidrogen, tetapi juga memiliki efek melepaskan hidrogen. Hal ini disebabkan oleh titik leleh dari <a href=\"https:\/\/www.aluminiumceramicfiber.com\/id\/portfolio\/covering-flux\/\">aliran penutup<\/a> biasanya lebih rendah daripada suhu lelehan, kepadatannya lebih kecil daripada kepadatan lelehan, dan juga memiliki sifat pembasahan yang baik. Lapisan penutup cair yang terus menerus dapat terbentuk di permukaan logam cair, yang dapat memisahkan logam cair dan gas tungku. Dalam keadaan normal, oksigen dan uap air tidak dapat atau jarang menembus lapisan penutup tersebut dan bereaksi dengan logam cair. Atom hidrogen yang terlarut dalam logam cair, karena radiusnya yang kecil, dapat menembus lapisan penutup dan keluar.<\/p>\n<p>Telah diketahui bahwa pada paduan aluminium dengan kandungan magnesium lebih dari 1%, lapisan oksida pada permukaan logam cair terdiri dari oksida magnesium yang longgar, yang tidak dapat mencegah reaksi logam dengan gas. Oleh karena itu, saat melebur paduan-paduan ini, metode pertama harus digunakan. Selain perlindungan, metode paduan pelindung digunakan untuk menambahkan (5\u201350) \u00d7 10\u207b\u2074 berilium ke dalam paduan guna mencegah paduan teroksidasi selama penyimpanan, pengecoran, serta perlakuan panas dan pengerjaan panas selanjutnya.<\/p>\n<p>Dalam cairan aluminium, berilium merupakan zat yang aktif di permukaan; afinitasnya terhadap oksigen lebih besar daripada aluminium, dan jari-jari ioniknya lebih kecil daripada jari-jari ionik aluminium dan magnesium. Berilium cenderung berdifusi ke permukaan cairan atau mengisi bagian yang retak pada lapisan oksida magnesium. Melakukan oksidasi. Berilium oksida yang terbentuk juga memiliki karakteristik resistansi tinggi, tekanan dekomposisi rendah, dan stabilitas termal yang baik. Bersama dengan magnesium oksida, berilium oksida membentuk struktur padat tipe spinel dari lapisan berilium magnesium oksida. Oleh karena itu, ketahanan paduan terhadap oksidasi meningkat, dan paduan ini memiliki efek perlindungan yang efektif. Pada paduan aluminium dengan kandungan magnesium tinggi, jika berilium tidak ditambahkan, akan sulit mengontrol kandungan magnesium dalam quasi-paduan selama proses peleburan dan pengecoran.<\/p>","protected":false},"excerpt":{"rendered":"<p>There are two common methods for protecting aluminum melt: one is to cover the surface of the melt with covering flux to form a continuous coating; the other is to protect the alloy, that is, to add an oxidizable alloy to the alloy elements, forming a dense protective oxide film on the surface of the [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":6994,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[9084],"tags":[],"class_list":["post-6993","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-aluminum-casting-flux"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v28.0 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Covering Flux for Aluminum Melt -sales@aluminiumceramicfiber.com<\/title>\n<meta name=\"description\" content=\"The covering flux for aluminum melt protection method is applicable to all aluminum alloys. 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