{"id":4077,"date":"2020-11-07T01:21:49","date_gmt":"2020-11-07T01:21:49","guid":{"rendered":"https:\/\/www.aluminiumceramicfiber.com\/?p=4077"},"modified":"2020-11-07T01:21:49","modified_gmt":"2020-11-07T01:21:49","slug":"foundry-coating","status":"publish","type":"post","link":"https:\/\/www.aluminiumceramicfiber.com\/id\/foundry-coating\/","title":{"rendered":"Pelapis Pengecoran"},"content":{"rendered":"

Insulasi termal lapisan tahan api pada pengecoran tidak hanya bergantung pada ketebalan lapisan, tetapi juga pada porositas lapisan itu sendiri. Ketebalan lapisan memiliki kisaran optimal. Pengalaman menunjukkan bahwa ketebalannya umumnya sekitar 150m\u2013250m. Porositas lapisan sangat dipengaruhi oleh metode dan kondisi aplikasi yang digunakan, karena tingkat pembentukan pori pada lapisan pada dasarnya bergantung pada laju penguapan permukaan rongga yang bersentuhan dengan pembawa air. Yang paling umum digunakan lapisan cetakan<\/a>\u00a0Metode yang digunakan adalah penyemprotan, tetapi terkadang juga dengan pengecatan menggunakan kuas, misalnya pada sistem gerbang dan area riser.<\/p>\n

\"Pelapis<\/p>\n

Secara umum, efek tahan api terbaik dapat diperoleh pada suhu sekitar 170\u2013200 \u2103. Namun, viskositas lapisan dan peralatan penyemprotan juga memengaruhi kualitas lapisan yang terbentuk. Oleh karena itu, tergantung pada viskositas cetakan dan peralatan penyemprotan, terkadang ketika suhu cetakan tinggi, suhu pelapisan harus sedikit menyimpang dari suhu optimal. Akan terjadi reaksi yang kuat terhadap suhu tinggi. Secara umum, porositas yang lebih besar dapat diperoleh, dan kinerja isolasi termal lapisan menjadi lebih baik. Namun, suhu cetakan yang terlalu tinggi akan menyebabkan \u201crebound\u201d yang kuat, yang membuat lapisan sulit menempel pada permukaan rongga, sehingga mengakibatkan berkurangnya daya rekat lapisan pada cetakan dan umur pakai yang lebih pendek.<\/p>\n

Sebaliknya, jika diaplikasikan pada suhu yang lebih rendah, meskipun lapisan tahan api pengecoran memiliki masa pakai yang lebih lama, lapisan tersebut menjadi padat dan kinerja isolasi termalnya buruk; selain itu, suhu aplikasi yang terlalu rendah akan menyebabkan lapisan menjadi tidak merata dan membentuk bercak-bercak. Saat cetakan dipanaskan hingga suhu kerja, lapisan tersebut akan retak dan mengelupas, dan ketika uap air yang terserap dalam lapisan menguap pada suhu tinggi, lapisan perekatnya akan retak.<\/p>","protected":false},"excerpt":{"rendered":"

The thermal insulation of refractory foundry coating depends not only on the thickness of the coating, but also on the porosity of the coating itself. The thickness of the coating has an optimum range. Experience shows that the thickness is generally about 150m-250m. The porosity of the coating is largely affected by the application method […]<\/p>\n","protected":false},"author":1,"featured_media":4078,"comment_status":"open","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[85],"tags":[9172,1289,1893,1895,9173,9175,9174,9176],"class_list":["post-4077","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-seo","tag-boron-nitride-ceramic","tag-boron-nitride-coating","tag-boron-nitride-paste","tag-boron-nitride-suppliers","tag-boron-nitrides","tag-boron-nitrogen","tag-boronitride","tag-cubic-boron-nitride-coating"],"yoast_head":"\nFoundry Coating - sales@aluminiumceramicfiber.com<\/title>\n<meta name=\"description\" content=\"The thermal insulation of refractory foundry coating depends not only on the thickness, but also on the porosity of the coating itself.\" \/>\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\/foundry-coating\/\" \/>\n<meta property=\"og:locale\" content=\"id_ID\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Foundry Coating - 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