{"id":6942,"date":"2021-09-14T09:49:36","date_gmt":"2021-09-14T09:49:36","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=6942"},"modified":"2021-09-14T09:49:36","modified_gmt":"2021-09-14T09:49:36","slug":"metal-smelting","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/metal-smelting\/","title":{"rendered":"Peleburan Logam"},"content":{"rendered":"

Tujuan dari proses peleburan logam adalah untuk menyesuaikan komposisi kimianya agar memenuhi persyaratan dan memperoleh cairan paduan aluminium dengan kemurnian tinggi, yang menciptakan kondisi yang menguntungkan untuk dicetak menjadi ingot dengan berbagai bentuk.<\/p>\n

\"Peleburan<\/p>\n

Aluminium adalah logam yang sangat reaktif. Reaksi kimia yang terjadi selama proses peleburan logam bersifat tidak dapat dibalik. Setelah logam bereaksi, logam tersebut tidak dapat dikembalikan ke bentuk semula, yang mengakibatkan hilangnya logam. Selain itu, produk reaksi (oksida, karbida, dll.) yang masuk ke dalam cairan peleburan akan mencemari logam dan menyebabkan cacat pada struktur internal ingot. Oleh karena itu, dalam proses peleburan paduan aluminium, dilakukan pemilihan yang ketat terhadap peralatan proses (seperti jenis tungku, metode pemanasan, dan sebagainya), serta pemilihan dan pengendalian yang ketat terhadap alur proses, seperti memperpendek waktu peleburan dan mengendalikan kecepatan peleburan yang tepat.<\/p>\n

Cacat metalurgi sangat rentan terjadi selama proses peleburan, dan sulit diperbaiki pada tahap pengolahan selanjutnya; selain itu, cacat metalurgi tersebut secara langsung memengaruhi kinerja bahan. Sebagian besar terjadinya cacat metalurgi disebabkan oleh proses peleburan, seperti kandungan gas yang tinggi, terak non-logam, butiran kristal yang kasar, dan kristal primer senyawa logam. Pengendalian yang tepat terhadap komposisi kimia dan kandungan pengotor serta penambahan bahan pemurnian<\/a> dapat meningkatkan kinerja pengecoran, dan hal ini sangat penting untuk meningkatkan kualitas logam cair.<\/p>\n

Persyaratan dasar proses peleburan adalah mempersingkat waktu peleburan semaksimal mungkin, mengontrol komposisi kimia secara akurat, meminimalkan kerugian pembakaran selama peleburan, menggunakan metode pemurnian terbaik, serta mengontrol suhu peleburan dengan tepat, sehingga diperoleh hasil peleburan yang memenuhi persyaratan komposisi kimia dan memiliki kemurnian tinggi. Ketepatan proses peleburan sangat erat kaitannya dengan kualitas ingot dan kualitas bahan yang diproses selanjutnya.<\/p>\n

Untuk pelat paduan aluminium seri 2x\u00d7\u00d7 dan seri 7\u00d7\u00d7\u00d7 yang telah diregangkan sebelumnya dalam proses peleburan, perlu diberikan perhatian khusus terhadap cacat-cacat seperti kandungan gas dalam lelehan, lapisan oksida, senyawa logam, dan inklusi.<\/p>","protected":false},"excerpt":{"rendered":"

The purpose of metal smelting is to smelt the chemical composition to meet the requirements and obtain the aluminum alloy melt with high purity, which creates favorable conditions for casting into ingots of various shapes. Aluminum is a very active metal. The chemical reactions that occur during the metal smelting process are irreversible. Once the […]<\/p>\n","protected":false},"author":1,"featured_media":6943,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[86],"tags":[23868,1760],"class_list":["post-6942","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-metal-smelting-for-aluminum-foundry","tag-molten-aluminum-refining"],"yoast_head":"\nMetal Smelting for Aluminum Foundry, Molten Aluminum Refining<\/title>\n<meta name=\"description\" content=\"The purpose of metal smelting is to smelt the chemical composition to meet the requirements and obtain the purer aluminum alloy melt.\" \/>\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\/metal-smelting\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" 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