{"id":10264,"date":"2021-09-14T02:53:44","date_gmt":"2021-09-14T02:53:44","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=10264"},"modified":"2021-09-14T02:53:44","modified_gmt":"2021-09-14T02:53:44","slug":"continuous-casting-tips","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/continuous-casting-tips\/","title":{"rendered":"Dicas para fundi\u00e7\u00e3o cont\u00ednua"},"content":{"rendered":"

A instala\u00e7\u00e3o e o ajuste das pontas e bicos de lingotamento cont\u00ednuo s\u00e3o muito importantes para o processo de lingotamento e lamina\u00e7\u00e3o de chapas de alum\u00ednio. Isso est\u00e1 relacionado \u00e0 qualidade da superf\u00edcie da tira fundida e laminada. O bico de lingotamento e lamina\u00e7\u00e3o \u00e9 um componente essencial da produ\u00e7\u00e3o por lingotamento e lamina\u00e7\u00e3o. O bocal de alimenta\u00e7\u00e3o para fundi\u00e7\u00e3o e lamina\u00e7\u00e3o pode melhorar o fluxo parcial no bocal de alimenta\u00e7\u00e3o, mantendo constante a velocidade do metal que sai da se\u00e7\u00e3o transversal na sa\u00edda do bocal de alimenta\u00e7\u00e3o e a temperatura uniforme, al\u00e9m de melhorar a qualidade da superf\u00edcie da chapa fundida e laminada.<\/p>\n

Montagem e ajuste das pontas e do bocal de fundi\u00e7\u00e3o cont\u00ednua<\/strong><\/p>\n

Ap\u00f3s ser montado, ele \u00e9 colocado na base do bocal de fundi\u00e7\u00e3o<\/a> e, em seguida, colocado no forno de aquecimento da ferramenta para aquecimento e secagem. A temperatura do forno \u00e9 mantida entre 150 e 200 \u2103, e o tempo de perman\u00eancia \u00e9 superior a 2 horas. O bico de fundi\u00e7\u00e3o retirado do forno de aquecimento da ferramenta deve ser submetido a uma nova inspe\u00e7\u00e3o.<\/p>\n

Os itens a serem verificados incluem: se o defletor est\u00e1 firme, se as bordas est\u00e3o retas e se as laterais est\u00e3o planas. Caso os requisitos acima n\u00e3o sejam atendidos, deve-se corrigi-los por meio de juntas, etc., at\u00e9 que os requisitos sejam atendidos.<\/p>\n

Ajuste a folga entre os rolos nas etapas de fundi\u00e7\u00e3o e lamina\u00e7\u00e3o; o valor da folga deve estar entre 5,4 e 6,5 mm, e a diferen\u00e7a entre as duas extremidades da folga deve ser de 0,02 mm, a fim de garantir que a espessura da chapa e a diferen\u00e7a de espessura lateral estejam em conformidade com a norma.<\/p>\n

\"\"<\/p>\n

Antes de instalar o bico de fundi\u00e7\u00e3o, \u00e9 necess\u00e1rio interromper a circula\u00e7\u00e3o de \u00e1gua no cilindro. Levante o bico seco e coloque-o no carrinho de alimenta\u00e7\u00e3o de bicos, localizado na frente do laminador, e fixe-o com parafusos. Tenha cuidado durante o processo de i\u00e7amento e instala\u00e7\u00e3o para evitar danificar o bico.<\/p>\n

Empurre manualmente o carrinho de alimenta\u00e7\u00e3o entre os dois rolos e observe lateralmente se a extremidade da boca e o rolo est\u00e3o em boas condi\u00e7\u00f5es. Quando os l\u00e1bios superior e inferior estiverem prestes a se aproximar da superf\u00edcie do rolo ao mesmo tempo, inicie o laminador para retroceder em baixa velocidade, empurre manualmente o carrinho de alimenta\u00e7\u00e3o para que o bico de fundi\u00e7\u00e3o entre em contato com a superf\u00edcie do rolo e empurre o bico de fundi\u00e7\u00e3o para o retificado aos poucos at\u00e9 que a \u00e1rea de fundi\u00e7\u00e3o necess\u00e1ria seja obtida.<\/p>\n

Medi\u00e7\u00e3o da zona de lamina\u00e7\u00e3o da pe\u00e7a fundida: interrompa a rota\u00e7\u00e3o do cilindro, me\u00e7a e ajuste o comprimento da zona de lamina\u00e7\u00e3o da pe\u00e7a fundida e fa\u00e7a medi\u00e7\u00f5es em v\u00e1rios pontos ao longo da largura do bocal de fundi\u00e7\u00e3o para garantir que a dist\u00e2ncia entre os dois lados seja uniforme.<\/p>\n

Ajuste a folga entre os bicos dos rolos: deixe a folga do bico do rolo inferior ligeiramente menor do que a do bico do rolo superior; a folga do bico do rolo superior \u00e9 de 1,5 a 2 mm, e a do bico do rolo inferior \u00e9 de 1,3 a 1,5 mm.<\/p>","protected":false},"excerpt":{"rendered":"

The installation and adjustment of continuous casting tips and nozzles are very important for aluminum sheet casting and rolling process. 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