{"id":8574,"date":"2021-04-28T06:53:16","date_gmt":"2021-04-28T06:53:16","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=8574"},"modified":"2021-04-28T06:59:13","modified_gmt":"2021-04-28T06:59:13","slug":"feeding-tip-nozzle","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/feeding-tip-nozzle\/","title":{"rendered":"Bocal de alimenta\u00e7\u00e3o"},"content":{"rendered":"<p>O bico da ponta de alimenta\u00e7\u00e3o \u00e9 formado pressionando-se a almofada de amortecimento diretamente contra a superf\u00edcie da face externa do bico da ponta de alimenta\u00e7\u00e3o, enquanto este est\u00e1 sendo moldado. Normalmente, o bico de alimenta\u00e7\u00e3o \u00e9 feito de feltro de fibras refrat\u00e1rias (alumina e s\u00edlica); o feltro \u00e9 produzido pela dispers\u00e3o dessas fibras em uma solu\u00e7\u00e3o aquosa contendo uma dispers\u00e3o de s\u00edlica coloidal, de modo que a pasta resultante mantenha 5%, em peso, dessas fibras. Uma manta de feltro \u00e9 formada por imers\u00e3o de uma tela de feltragem na pasta e conex\u00e3o de uma suc\u00e7\u00e3o a v\u00e1cuo \u00e0 parte inferior, permitindo que as fibras de feltro se acumulem na superf\u00edcie da tela de feltragem.<\/p>\n<p>A manta de feltro \u00e9 colocada na cavidade de uma matriz, e a cavidade \u00e9 fechada por um elemento de matriz correspondente ap\u00f3s a almofada amortecedora ser posicionada sobre as fibras de feltro, em uma posi\u00e7\u00e3o adjacente \u00e0 futura borda a jusante do elemento de ponta de alimenta\u00e7\u00e3o. O conjunto \u00e9 submetido a uma press\u00e3o insuficiente para causar quebra significativa das fibras, a fim de comprimir a manta de feltro at\u00e9 a geometria desejada de uma das metades do bocal de alimenta\u00e7\u00e3o cont\u00ednua e de pressionar a almofada amortecedora contra a manta de feltro. Esse processo \u00e9 convencional, exceto pela adi\u00e7\u00e3o da almofada amortecedora.<\/p>\n<p>Uma t\u00e9cnica alternativa para fixar a almofada de amortecimento \u00e0 face externa do bico de alimenta\u00e7\u00e3o consiste em aplicar uma cola \u00e0 base de s\u00edlica na parte lateral da almofada de amortecimento a ser fixada ao bico de alimenta\u00e7\u00e3o e, em seguida, pressionar a almofada de amortecimento contra o bico de alimenta\u00e7\u00e3o por meio da t\u00e9cnica de prensagem descrita acima.<\/p>\n<p>O <a href=\"http:\/\/www.alalloycasting.com\/pt\/feed-tip\/\">dica de alimenta\u00e7\u00e3o<\/a>\u00a0A espessura do elemento \u00e9 de aproximadamente 2,2 mm na borda a jusante de cada elemento de ponta de alimenta\u00e7\u00e3o, com uma folga de 4 a 5 mm entre o par de elementos de ponta de alimenta\u00e7\u00e3o por onde o metal fundido flui. Normalmente, h\u00e1 uma folga inferior a 5,5 mm entre os rolos da m\u00e1quina de vazamento na borda a jusante desses rolos. Para acomodar a almofada amortecedora acoplada, a borda a jusante do par de bicos de alimenta\u00e7\u00e3o \u00e9 recuada a montante o suficiente para compensar o aumento de espessura que a almofada amortecedora adiciona ao bico de alimenta\u00e7\u00e3o quando acoplada.<\/p>\n<p>A almofada amortecedora tem uma forma geralmente retangular, sendo seu comprimento definido pelo comprimento dos elementos do bico de alimenta\u00e7\u00e3o montados, cujo comprimento, por sua vez, depende do comprimento predeterminado dos rolos de lamina\u00e7\u00e3o. A largura da almofada amortecedora \u00e9 determinada aproximadamente pela \u00e1rea na face externa do elemento do bocal de alimenta\u00e7\u00e3o que, de outra forma, entraria em contato com o rolo girat\u00f3rio.<\/p>","protected":false},"excerpt":{"rendered":"<p>The feeding tip nozzle is by pressing the buffer pad directly into the surface of the outside face of the feed tip nozzle as the&hellip;<\/p>","protected":false},"author":1,"featured_media":8600,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-8574","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v27.9 - https:\/\/yoast.com\/product\/yoast-seo-wordpress\/ -->\n<title>Feeding\u00a0Tip\u00a0Nozzle with buffer pad -sales@alalloycasting.com<\/title>\n<meta name=\"description\" content=\"The 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