{"id":4242,"date":"2020-08-27T09:17:40","date_gmt":"2020-08-27T09:17:40","guid":{"rendered":"http:\/\/www.alalloycasting.com\/?p=4242"},"modified":"2020-08-27T09:44:39","modified_gmt":"2020-08-27T09:44:39","slug":"internal-defects-of-aluminum-rods","status":"publish","type":"post","link":"https:\/\/www.alalloycasting.com\/es\/internal-defects-of-aluminum-rods\/","title":{"rendered":"Defectos internos de las barras de aluminio"},"content":{"rendered":"

Los defectos de calidad internos de las barras de aluminio consisten principalmente en poros e inclusiones de escoria. Tanto los poros como las inclusiones de escoria pueden reducir la resistencia a la tracci\u00f3n y el alargamiento de las barras redondas de aluminio para aplicaciones el\u00e9ctricas, aumentar su resistividad y afectar a la calidad de estas barras.<\/p>\n

Los defectos internos de las barras de aluminio influyen considerablemente en el rendimiento del aluminio redondo para aplicaciones el\u00e9ctricas. Durante la fundici\u00f3n, el contenido de poros en la plancha fundida es elevado, lo que puede provocar la rotura del alambre durante el relaminado o durante el bobinado.<\/p>\n

Defectos internos de las barras de aluminio<\/h2>\n

Principales causas de los estomas<\/strong><\/p>\n

1) La temperatura del aluminio fundido es demasiado alta, lo que da lugar a un contenido de gas excesivo. Seg\u00fan los experimentos, el contenido de gas en el aluminio fundido es directamente proporcional a la temperatura.<\/p>\n

2) Durante el proceso de fundici\u00f3n, la gran cantidad de vapor generada por el agua de enfriamiento no se dispers\u00f3 a tiempo, y parte de ese vapor se disolvi\u00f3 en el aluminio fundido, formando poros.<\/p>\n

3) Hay muy poco aceite lubricante en la banda de acero como para formar una pel\u00edcula protectora de aceite m\u00e1s eficaz, lo que provoca que el vapor penetre en el aluminio fundido.<\/p>\n

Medidas principales<\/strong><\/p>\n

1) Reducir la temperatura del aluminio fundido para garantizar que se mantenga dentro del rango normal de temperaturas de fundici\u00f3n.<\/p>\n

2) Instalar un unidad de desgasificaci\u00f3n<\/a> antes de la colada, como la desgasificaci\u00f3n en l\u00ednea con nitr\u00f3geno de alta pureza o con una mezcla de nitr\u00f3geno y cloro, o la desgasificaci\u00f3n y la formaci\u00f3n de escoria en el horno de mezcla.<\/p>\n

3) Instala un ventilador en la pieza de fundici\u00f3n para expulsar el vapor.<\/p>\n

4) Durante el proceso de fundici\u00f3n, ajuste la cantidad de aceite lubricante para garantizar que haya una pel\u00edcula protectora de aceite sobre la cinta de acero.<\/p>\n

Las inclusiones internas de escoria tambi\u00e9n tienen un gran impacto en el rendimiento de la aleaci\u00f3n de aluminio en barra redonda para aplicaciones el\u00e9ctricas, lo que puede provocar la rotura del alambre o del lingote durante el proceso de producci\u00f3n.<\/p>\n

\"Defectos<\/p>\n

Principales factores que influyen en la formaci\u00f3n de inclusiones de escoria<\/strong><\/p>\n

1) Hay demasiada escoria en el aluminio fundido y no se lleva a cabo ning\u00fan tratamiento de refinado eficaz.<\/p>\n

2) La temperatura del aluminio fundido es demasiado alta, lo que provoca una mayor formaci\u00f3n de escoria de oxidaci\u00f3n.<\/p>\n

3) Durante el proceso de transferencia del aluminio fundido en el canal de colada<\/a>, no se utilizan ni la cubierta de la cuchara ni flotadores, de modo que el aluminio fundido se lava constantemente, lo que hace que la escoria se disuelva en \u00e9l.<\/p>\n

Medidas principales<\/strong><\/p>\n

1) Refinar el aluminio fundido en el horno de mezcla, por ejemplo, a\u00f1adiendo agentes refinadores, agentes de escoria, etc., para garantizar el tiempo de reposo del aluminio fundido.<\/p>\n

2) Controlar adecuadamente la temperatura del horno de mezcla para garantizar que la temperatura del aluminio fundido se mantenga dentro del rango establecido.<\/p>\n

3) A\u00f1adir un dispositivo de filtrado antes del vertido, como por ejemplo un filtro de espuma cer\u00e1mica<\/a> para la filtraci\u00f3n.<\/p>\n

4) Durante el proceso de trasvase de la canaleta y el canal de vertido, la cubierta de la cuchara y la placa flotante se utilizan para hacer que el aluminio fundido fluya por la capa inferior de la pel\u00edcula de \u00f3xido, mantener estable el nivel del l\u00edquido y evitar que la escoria de \u00f3xido se mezcle con el aluminio fundido.<\/p>","protected":false},"excerpt":{"rendered":"

The internal quality defects of aluminum rods mainly include pores and slag inclusions. Whether it is pores or slag inclusions, they can reduce the tensile…<\/p>","protected":false},"author":1,"featured_media":4243,"comment_status":"closed","ping_status":"closed","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[233],"tags":[4620],"class_list":["post-4242","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blog","tag-internal-defects-of-aluminum-rods"],"yoast_head":"\nInternal Defects of Aluminum Rods Main Causes and Measures<\/title>\n<meta name=\"description\" content=\"The internal quality defects of aluminum rods mainly include pores and slag inclusions. 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