{"id":4076,"date":"2018-12-07T07:21:44","date_gmt":"2018-12-07T07:21:44","guid":{"rendered":"http:\/\/www.adtechamm.com\/?p=4076"},"modified":"2018-12-07T07:55:37","modified_gmt":"2018-12-07T07:55:37","slug":"die-cast-aluminum-alloy","status":"publish","type":"post","link":"https:\/\/www.adtechamm.com\/es\/die-cast-aluminum-alloy\/","title":{"rendered":"Aleaci\u00f3n de aluminio fundido a presi\u00f3n"},"content":{"rendered":"<p><strong>Aleaci\u00f3n de aluminio fundido a presi\u00f3n<\/strong><\/p>\n<p><strong>Aleaci\u00f3n de Al-Si<\/strong><br \/>\nLa aleaci\u00f3n de Al-Si se caracteriza por un intervalo de temperatura de cristalizaci\u00f3n reducido, un elevado calor latente de solidificaci\u00f3n de la fase de silicio en la aleaci\u00f3n, una elevada capacidad calor\u00edfica espec\u00edfica y un coeficiente de contracci\u00f3n lineal reducido.<br \/>\nPor lo tanto, su rendimiento en fundici\u00f3n es, en general, mejor que el de otras aleaciones de aluminio; su capacidad de llenado tambi\u00e9n es buena, y la tendencia a la formaci\u00f3n de grietas en caliente y a la contracci\u00f3n es relativamente baja.<br \/>\nLa cantidad de fase fr\u00e1gil (fase de silicio) presente en el eut\u00e9ctico de Al-Si es la m\u00e1s baja, y su fracci\u00f3n m\u00e1sica es de tan solo alrededor de 10%, por lo que su plasticidad es superior a la de otras aleaciones de aluminio; adem\u00e1s, esta \u00fanica fase fr\u00e1gil puede someterse a un procesamiento adicional mediante modificaciones para mejorar la plasticidad.<br \/>\nLa prueba tambi\u00e9n demostr\u00f3 que el eut\u00e9ctico de Al-Si sigue conservando una buena plasticidad cerca de su punto de solidificaci\u00f3n, algo que no se observa en otras aleaciones de aluminio.<br \/>\nNormalmente, la estructura de la aleaci\u00f3n fundida contiene una cantidad considerable de eut\u00e9ctico para garantizar un buen comportamiento en la fundici\u00f3n.<br \/>\nEl aumento del n\u00famero de eut\u00e9cticos har\u00e1 que la aleaci\u00f3n se vuelva fr\u00e1gil y reducir\u00e1 sus propiedades mec\u00e1nicas. Existe una cierta contradicci\u00f3n entre ambos aspectos.<br \/>\nSin embargo, dado que el eut\u00e9ctico de Al-Si presenta una buena plasticidad y permite cumplir mejor los requisitos tanto en cuanto a propiedades mec\u00e1nicas como a propiedades de fundici\u00f3n, la aleaci\u00f3n de Al-Si es la aleaci\u00f3n de aluminio para fundici\u00f3n a presi\u00f3n m\u00e1s utilizada.<br \/>\n<strong>Aleaci\u00f3n de Al-Mg<\/strong><br \/>\n<strong>Caracter\u00edsticas de rendimiento de la aleaci\u00f3n de aluminio fundida a presi\u00f3n<\/strong><br \/>\nBuenas propiedades mec\u00e1nicas a temperatura ambiente.<br \/>\nGran resistencia a la corrosi\u00f3n.<br \/>\nEl rendimiento de la fundici\u00f3n es relativamente bajo; las fluctuaciones en las propiedades mec\u00e1nicas y los efectos del espesor de la pared son relativamente importantes.<br \/>\nCon el uso prolongado, la plasticidad de la aleaci\u00f3n se reduce debido al efecto del envejecimiento, y la pieza de fundici\u00f3n a presi\u00f3n llega incluso a agrietarse.<br \/>\nLa propensi\u00f3n de la pieza de fundici\u00f3n a presi\u00f3n a presentar grietas por corrosi\u00f3n bajo tensi\u00f3n tambi\u00e9n es elevada.<br \/>\nLas desventajas de la aleaci\u00f3n de Al-Mg contrarrestan en parte sus ventajas, lo que limita su aplicaci\u00f3n.<br \/>\n<strong>Aleaci\u00f3n de aluminio y zinc<\/strong><br \/>\nAleaci\u00f3n de aluminio y zinc <a href=\"http:\/\/www.adtechamm.com\/es\/2018\/10\/24\/aluminium-ashing-agent\/\">fundici\u00f3n a presi\u00f3n<\/a> Las piezas pueden alcanzar mejores propiedades mec\u00e1nicas tras un envejecimiento natural. Cuando la fracci\u00f3n m\u00e1sica de zinc es superior a 10%, la resistencia mejora notablemente.<br \/>\nLa desventaja de esta aleaci\u00f3n es que presenta una escasa resistencia a la corrosi\u00f3n, tiende a la corrosi\u00f3n bajo tensi\u00f3n y es susceptible de sufrir grietas t\u00e9rmicas durante la fundici\u00f3n a presi\u00f3n. La aleaci\u00f3n Y401, de uso habitual, presenta una buena fluidez y facilita el llenado de la cavidad. Su inconveniente es que tiende a formar poros y, cuando el contenido de silicio y hierro es bajo, es propensa a sufrir fisuras t\u00e9rmicas.<\/p>\n<p><img class=\"alignnone size-full wp-image-4078\" src=\"http:\/\/www.adtechamm.com\/wp-content\/uploads\/2018\/12\/Die-cast-aluminum-alloy.jpg\" alt=\"Aleaci\u00f3n de aluminio fundido a presi\u00f3n\" width=\"862\" height=\"619\" srcset=\"https:\/\/www.adtechamm.com\/wp-content\/uploads\/2018\/12\/Die-cast-aluminum-alloy.jpg 862w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2018\/12\/Die-cast-aluminum-alloy-300x215.jpg 300w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2018\/12\/Die-cast-aluminum-alloy-768x551.jpg 768w, https:\/\/www.adtechamm.com\/wp-content\/uploads\/2018\/12\/Die-cast-aluminum-alloy-700x503.jpg 700w\" sizes=\"(max-width: 862px) 100vw, 862px\" \/><\/p>\n<p>&nbsp;<\/p>","protected":false},"excerpt":{"rendered":"<p>Die-cast aluminum alloy Al-Si alloy The Al-Si alloy has the characteristics of small crystallization temperature interval, large solidification latent heat of the silicon phase in the alloy, large specific heat capacity, and small linear shrinkage coefficient. Therefore, its casting performance is generally better than other&#8230;<\/p>","protected":false},"author":1,"featured_media":4078,"comment_status":"open","ping_status":"open","sticky":false,"template":"","format":"standard","meta":[],"categories":[52],"tags":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v19.6 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Die-cast aluminum alloy - sale@adtechamm.com \u2014Adtech<\/title>\n<meta name=\"description\" content=\"Performance characteristics of Die-cast aluminum alloy Good mechanical properties at room temperature. 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