{"id":6441,"date":"2020-11-13T09:01:51","date_gmt":"2020-11-13T09:01:51","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=6441"},"modified":"2020-11-13T09:01:51","modified_gmt":"2020-11-13T09:01:51","slug":"detection-of-slag-content","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/pt\/detection-of-slag-content\/","title":{"rendered":"Detec\u00e7\u00e3o do teor de esc\u00f3ria"},"content":{"rendered":"

Nos \u00faltimos anos, pesquisadores cient\u00edficos e t\u00e9cnicos de engenharia t\u00eam aprimorado e aperfei\u00e7oado continuamente o processo de purifica\u00e7\u00e3o da liga de alum\u00ednio fundida e os equipamentos correspondentes, de modo que o teor de inclus\u00f5es na liga de alum\u00ednio fundida tem sido continuamente reduzido; no entanto, ao mesmo tempo, ainda n\u00e3o se disp\u00f5e de um m\u00e9todo eficaz. M\u00e9todos razo\u00e1veis de detec\u00e7\u00e3o de inclus\u00f5es podem determinar com precis\u00e3o o teor de esc\u00f3ria na massa fundida e avaliar de forma abrangente as vantagens e desvantagens de v\u00e1rios processos de purifica\u00e7\u00e3o<\/a>. Como determinar o teor de inclus\u00f5es no alum\u00ednio fundido e como determinar a concentra\u00e7\u00e3o dessas inclus\u00f5es de forma simples, direta, r\u00e1pida e precisa antes do vazamento sempre foi um dos principais focos de pesquisa de estudiosos no pa\u00eds e no exterior. Os testes incluem principalmente a identifica\u00e7\u00e3o de seus componentes qu\u00edmicos, a observa\u00e7\u00e3o de sua forma, tamanho e distribui\u00e7\u00e3o, e a determina\u00e7\u00e3o de seu teor. Devido ao baixo teor de inclus\u00f5es na massa fundida e \u00e0 segrega\u00e7\u00e3o local, a composi\u00e7\u00e3o irregular do alum\u00ednio fundido e outros fatores levam \u00e0 baixa estabilidade, grande dispers\u00e3o e baixa representatividade da amostragem dos resultados dos testes. \u00c9 dif\u00edcil avaliar a situa\u00e7\u00e3o das inclus\u00f5es em todo o material fundido, sendo poss\u00edvel realizar apenas uma an\u00e1lise qualitativa relativa.<\/p>\n

Atualmente, existem diversos tipos de m\u00e9todos de detec\u00e7\u00e3o do teor de esc\u00f3ria no alum\u00ednio fundido, tanto no pa\u00eds quanto no exterior, divididos principalmente em detec\u00e7\u00e3o offline e detec\u00e7\u00e3o online. Os principais m\u00e9todos de detec\u00e7\u00e3o offline incluem: m\u00e9todo metalogr\u00e1fico, m\u00e9todo de filtra\u00e7\u00e3o, m\u00e9todo de an\u00e1lise qu\u00edmica, m\u00e9todo de fus\u00e3o por feixe de el\u00e9trons, m\u00e9todo de aquecimento centr\u00edfugo, m\u00e9todo ultrass\u00f4nico, etc. Os m\u00e9todos de detec\u00e7\u00e3o online incluem principalmente: m\u00e9todo LiMCA, m\u00e9todo LiMCAlI, etc. Atualmente, existem muitas pesquisas sobre m\u00e9todos de detec\u00e7\u00e3o offline na China, mas esses m\u00e9todos s\u00e3o realizados fora da linha de produ\u00e7\u00e3o, ou seja, as amostras devem ser coletadas no local de produ\u00e7\u00e3o e, em seguida, processadas e testadas em laborat\u00f3rio, com os resultados sendo devolvidos \u00e0 produ\u00e7\u00e3o, o que dificulta o uso no local. A detec\u00e7\u00e3o online n\u00e3o consegue refletir com precis\u00e3o a situa\u00e7\u00e3o real das inclus\u00f5es no alum\u00ednio fundido. Existem muitos estudos sobre m\u00e9todos de detec\u00e7\u00e3o online no exterior, mas seus produtos s\u00e3o mais caros e onerosos.<\/p>","protected":false},"excerpt":{"rendered":"

In recent years, scientific researchers and engineering technicians have continuously improved and perfected the purification process of aluminum alloy melt and the corresponding equipment, so…<\/p>","protected":false},"author":1,"featured_media":6476,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[],"class_list":["post-6441","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog"],"yoast_head":"\nDetection of Slag Content in Molten Aluminum Casting<\/title>\n<meta name=\"description\" content=\"There are many kinds of detection methods for slag content in molten aluminum, mainly divided into offline detection and online detection.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" 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