{"id":10051,"date":"2021-08-24T09:10:21","date_gmt":"2021-08-24T09:10:21","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10051"},"modified":"2021-08-24T09:10:21","modified_gmt":"2021-08-24T09:10:21","slug":"molten-metal-filtration-process","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/molten-metal-filtration-process\/","title":{"rendered":"Processo de filtragem de metal fundido"},"content":{"rendered":"

O processo de filtragem do metal fundido \u00e9 muito importante. \u00c9 a \u00faltima etapa antes da fundi\u00e7\u00e3o e determina a qualidade da pe\u00e7a fundida. Para que o metal fundido passe pela placa de filtragem, \u00e9 necess\u00e1rio superar a tens\u00e3o superficial da pel\u00edcula de \u00f3xido presente na superf\u00edcie do metal fundido, e deve haver metal fundido em quantidade suficiente para penetrar na placa de filtragem.<\/p>\n

Preencha o Caixa de filtro CFF<\/a> a uma vaz\u00e3o adequada, sem a forma\u00e7\u00e3o de grandes v\u00f3rtices, o que pode reduzir a gera\u00e7\u00e3o e a reten\u00e7\u00e3o de impurezas. O excesso de impurezas pode reduzir significativamente a capacidade da placa filtrante de reter impurezas.<\/p>\n

Deixe a placa de filtro de espuma cer\u00e2mica em repouso natural; n\u00e3o bata, n\u00e3o agite nem interfira na caixa do filtro. Qualquer perturba\u00e7\u00e3o resultar\u00e1 em perfus\u00e3o local, o que reduzir\u00e1 o efeito de filtragem e a capacidade de reter impurezas.<\/p>\n

Um defletor de canal de vazamento \u00e9 instalado na calha de fluxo entre a caixa de filtro CFF e a m\u00e1quina de fundi\u00e7\u00e3o; o metal fundido \u00e9 primeiro vertido na placa de filtro e, em seguida, preenche a calha de fluxo \u00e0 frente da barragem do canal de vazamento; depois, a barragem do defletor \u00e9 aberta para iniciar a fundi\u00e7\u00e3o. Esse m\u00e9todo exp\u00f5e a placa de filtragem novamente \u00e0 press\u00e3o total, garantindo assim a perfus\u00e3o da placa de filtragem, e tamb\u00e9m proporciona um fluxo r\u00e1pido de metal quente, o que favorece o in\u00edcio da fundi\u00e7\u00e3o.<\/p>\n

\"Sistema<\/p>\n

Processo normal de filtragem de metal fundido<\/strong><\/p>\n

(1) N\u00e3o bata na esc\u00f3ria na caixa de filtragem e no canal de drenagem. A esc\u00f3ria destruir\u00e1 a pel\u00edcula de \u00f3xido na superf\u00edcie do metal fundido e far\u00e1 com que ela seja arrastada pelo metal fundido. A esc\u00f3ria na superf\u00edcie do metal fundido \u00e9 inofensiva, enquanto a esc\u00f3ria abaixo da superf\u00edcie do metal fundido \u00e9 prejudicial.<\/p>\n

(2) Encha o canal de alimenta\u00e7\u00e3o com metal. Durante o processo de fundi\u00e7\u00e3o, uma flutua\u00e7\u00e3o excessiva do n\u00edvel do metal no canal de alimenta\u00e7\u00e3o aumentar\u00e1 o teor de esc\u00f3ria da massa fundida. A turbul\u00eancia deve ser restringida abaixo da superf\u00edcie do metal, e a pel\u00edcula de \u00f3xido na superf\u00edcie deve ser protegida contra danos. Ambos os lados da placa filtrante tamb\u00e9m devem estar imersos na massa fundida.<\/p>\n

(3) N\u00e3o vibre a placa de filtragem de forma alguma. Vibrar a caixa de filtragem e a calha, raspar a placa de filtragem sob a massa fundida, etc., produzir\u00e1 inclus\u00f5es n\u00e3o met\u00e1licas. Isso tamb\u00e9m pode fazer com que a placa de filtragem solte esc\u00f3ria, e a esc\u00f3ria solta entrar\u00e1 no lingote e permanecer\u00e1 no produto.<\/p>","protected":false},"excerpt":{"rendered":"

The molten metal filtration process is very important. It is the last step before casting and determines the quality of the casting. In order for…<\/p>","protected":false},"author":1,"featured_media":10052,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[7373,12498],"class_list":["post-10051","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-cff-filter-system","tag-molten-metal-filtration-process"],"yoast_head":"\nMolten Metal Filtration Process, CFF Filter System<\/title>\n<meta name=\"description\" content=\"The molten metal filtration process is very important. 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