{"id":24984,"date":"2026-11-04T16:05:17","date_gmt":"2026-11-04T08:05:17","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=24984"},"modified":"2026-11-04T16:13:22","modified_gmt":"2026-11-04T08:13:22","slug":"aluminum-extrusion-temperature","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/aluminum-extrusion-temperature\/","title":{"rendered":"Temperatura de extrusi\u00f3n del aluminio: la ventana, la serie de aleaci\u00f3n y lo que le cuesta al dado"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Temperatura de extrusi\u00f3n del aluminio: la ventana, la serie de aleaci\u00f3n y lo que le cuesta al dado<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Cada serie de aleaci\u00f3n tiene un rango de temperatura de extrusi\u00f3n, y el rango es estrecho. Por debajo, la prensa se queda sin presi\u00f3n; por encima, la superficie falla o el metal empieza a fundirse en los l\u00edmites de grano. La ventana la fija el s\u00f3lidus, ajustado a la baja por el tratamiento de homogeneizaci\u00f3n, y se desplaza con la serie de aleaci\u00f3n en m\u00e1s de 100 &deg;C. Esta p\u00e1gina expone los rangos publicados, el salto que las aleaciones 6xxx muestran en su solvus y lo que realmente cuesta en producci\u00f3n un control deficiente de la temperatura.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Los rangos, por serie de aleaci\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Las tres temperaturas que importan son el s\u00f3lidus, la permanencia de homogeneizaci\u00f3n y el rango de extrusi\u00f3n. La homogeneizaci\u00f3n de las aleaciones comerciales es normalmente de 20 a 50 &deg;C por debajo del s\u00f3lidus y lo m\u00e1s cercana posible a la temperatura inicial de trabajo en caliente, por lo que las cifras siguientes se siguen unas a otras.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Serie de aleaci\u00f3n<\/th><th class=\"has-text-align-left\" data-align=\"left\">S\u00f3lidus (&deg;C)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Homogeneizaci\u00f3n (&deg;C)<\/th><th class=\"has-text-align-left\" data-align=\"left\">Extrusi\u00f3n (&deg;C)<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">1XXX<\/td><td class=\"has-text-align-left\" data-align=\"left\">640 a 650<\/td><td class=\"has-text-align-left\" data-align=\"left\">560 a 605<\/td><td class=\"has-text-align-left\" data-align=\"left\">450 a 550<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">2XXX<\/td><td class=\"has-text-align-left\" data-align=\"left\">500 a 650<\/td><td class=\"has-text-align-left\" data-align=\"left\">480 a 530<\/td><td class=\"has-text-align-left\" data-align=\"left\">400 a 480<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">3XXX<\/td><td class=\"has-text-align-left\" data-align=\"left\">630 a 645<\/td><td class=\"has-text-align-left\" data-align=\"left\">530 a 620<\/td><td class=\"has-text-align-left\" data-align=\"left\">480 a 520<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">5XXX<\/td><td class=\"has-text-align-left\" data-align=\"left\">570 a 630<\/td><td class=\"has-text-align-left\" data-align=\"left\">380 a 550<\/td><td class=\"has-text-align-left\" data-align=\"left\">400 a 480<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">6XXX<\/td><td class=\"has-text-align-left\" data-align=\"left\">580 a 620<\/td><td class=\"has-text-align-left\" data-align=\"left\">560 a 600<\/td><td class=\"has-text-align-left\" data-align=\"left\">430 a 500<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">7XXX<\/td><td class=\"has-text-align-left\" data-align=\"left\">por encima de 500<\/td><td class=\"has-text-align-left\" data-align=\"left\">400 a 500<\/td><td class=\"has-text-align-left\" data-align=\"left\">390 a 450<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Temperaturas t\u00edpicas de s\u00f3lidus, homogeneizaci\u00f3n y extrusi\u00f3n por serie de aleaci\u00f3n. El rango de extrusi\u00f3n es la temperatura de la palanquilla al inicio de la carrera, no la temperatura en el dado.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Dos cosas de esa tabla deciden c\u00f3mo se opera una prensa. El rango 7xxx, de 390 a 450 &deg;C, est\u00e1 unos 60 &deg;C por debajo del rango 6xxx y se solapa con la regi\u00f3n en la que el 6xxx a\u00fan es demasiado r\u00edgido para extruirse bien. Y la amplitud de la ventana no es proporcional a la temperatura: el 2xxx abarca 80 &deg;C, el 6xxx abarca 70 &deg;C y el 7xxx abarca 60 &deg;C, pero la ventana del 7xxx es la que est\u00e1 limitada por la fusi\u00f3n incipiente en el extremo superior, porque su s\u00f3lidus est\u00e1 apenas por encima del rango de trabajo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">El 6xxx tiene un salto en el solvus<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En las aleaciones 6xxx el l\u00edmite que importa no es la temperatura de la palanquilla, sino la temperatura que alcanza el perfil a la salida del dado. Ese l\u00edmite se desplaza seg\u00fan si el Mg y el Si est\u00e1n en soluci\u00f3n cuando la palanquilla entra en el dado. Si la palanquilla se calienta directamente hasta el rango de trabajo y se mantiene por debajo del solvus, el Mg2Si sigue presente como part\u00edculas y el perfil falla antes. Si la palanquilla supera el solvus, o se sobrecalienta y se enfr\u00eda r\u00e1pidamente, el Mg y el Si est\u00e1n en soluci\u00f3n y el perfil puede correr de 20 a 30 &deg;C m\u00e1s caliente antes de la fusi\u00f3n incipiente.<\/p>\n\n\n\n<figure class=\"wp-block-table is-style-stripes\"><table class=\"has-fixed-layout\"><thead><tr><th class=\"has-text-align-left\" data-align=\"left\">Aleaci\u00f3n<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite del perfil con Mg2Si presente<\/th><th class=\"has-text-align-left\" data-align=\"left\">L\u00edmite del perfil con Mg y Si en soluci\u00f3n<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">6060<\/td><td class=\"has-text-align-left\" data-align=\"left\">590 &deg;C<\/td><td class=\"has-text-align-left\" data-align=\"left\">620 &deg;C<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">6063<\/td><td class=\"has-text-align-left\" data-align=\"left\">591 &deg;C<\/td><td class=\"has-text-align-left\" data-align=\"left\">612 &deg;C<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">6082<\/td><td class=\"has-text-align-left\" data-align=\"left\">570 &deg;C<\/td><td class=\"has-text-align-left\" data-align=\"left\">595 &deg;C<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\"><em>Temperatura superficial del perfil a la que falla la superficie, para palanquillas calentadas por debajo y por encima del solvus. El solvus es de aproximadamente 475 &deg;C para el 6060 y de aproximadamente 540 &deg;C para el 6082.<\/em><\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Ese es un punto de la pr\u00e1ctica de prensa, no una curiosidad metal\u00fargica. Un taller que precalienta directamente a 460 &deg;C el 6060 est\u00e1 procesando la aleaci\u00f3n con part\u00edculas presentes y lo paga con un techo m\u00e1s bajo, aunque 460 &deg;C est\u00e9 c\u00f3modamente dentro del rango publicado de 430 a 500 &deg;C. El l\u00edmite superior lo fija lo que el metal lleva a la matriz, no la tabla.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">El control de temperatura es producci\u00f3n, no pulcritud<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Como la ventana es estrecha, la precisi\u00f3n del control determina la velocidad. Las cifras publicadas son contundentes: con un control de m\u00e1s o menos 20 &deg;C, la velocidad de prensa constante \u00f3ptima cae alrededor de un 10 por ciento frente a una pasada perfectamente isot\u00e9rmica. Si el control se desv\u00eda a m\u00e1s o menos 50 &deg;C, la cifra es una reducci\u00f3n del 50 por ciento. Lo que importa es la temperatura de salida de la matriz, y no es la misma que la temperatura de la palanquilla en el horno, porque el trabajo de deformaci\u00f3n a\u00f1ade calor a lo largo de la carrera.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Por eso vale la pena la instrumentaci\u00f3n de la extrusi\u00f3n isot\u00e9rmica. Para mantener constante la temperatura de salida mientras la palanquilla se enfr\u00eda contra el contenedor y se calienta bajo deformaci\u00f3n, el \u00e9mbolo debe reducir su velocidad a lo largo de la carrera, y por eso las rampas de velocidad se programan en lugar de fijarse. Una prensa que funciona a una velocidad de \u00e9mbolo constante no es, por definici\u00f3n, isot\u00e9rmica.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">La presi\u00f3n m\u00e1xima ocupa parte de la ventana<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El otro l\u00edmite es la capacidad de la prensa, y no es la carga en r\u00e9gimen estacionario. Se necesita una presi\u00f3n de perforaci\u00f3n o m\u00e1xima para poner en movimiento la palanquilla, y est\u00e1 por encima de la cifra en r\u00e9gimen estacionario que dan los c\u00e1lculos habituales. Al incluir la presi\u00f3n m\u00e1xima, la relaci\u00f3n de extrusi\u00f3n m\u00e1xima disponible a una presi\u00f3n y velocidad de \u00e9mbolo dadas cae casi un 40 por ciento frente a la cifra calculada solo con la presi\u00f3n en r\u00e9gimen estacionario. Por lo tanto, una prensa que parece adecuada seg\u00fan el valor en r\u00e9gimen estacionario puede quedarse corta de capacidad al inicio de cada carrera, lo que se manifiesta como un bloqueo en una palanquilla larga o una aleaci\u00f3n dura, m\u00e1s que como un l\u00edmite de presi\u00f3n limpio.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Lo que la ventana hace a la matriz<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La matriz est\u00e1 en el extremo caliente de todo esto. En una prensa de aluminio, el apoyo de la matriz trabaja a unos 1050 &deg;F (565 &deg;C) sin lubricaci\u00f3n, frente a un metal que se adhiere al acero, y la temperatura de trabajo es lo que obliga a elegir el grado: el H13 y su equivalente europeo 1.2344 se usan en todo el mundo porque mantienen la dureza y la resistencia al revenido a esa temperatura, y porque responden a la nitruraci\u00f3n. Un grado que ser\u00eda adecuado para una matriz de trabajo en fr\u00edo pierde su dureza en el apoyo y se deforma, y el perfil se desv\u00eda antes de que la matriz muestre desgaste visible.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El v\u00ednculo tambi\u00e9n funciona en sentido contrario. Todo lo que eleva la temperatura de salida acorta la vida de la matriz: una temperatura de palanquilla m\u00e1s alta, un \u00e9mbolo m\u00e1s r\u00e1pido, un apoyo m\u00e1s largo, una matriz m\u00e1s fr\u00eda que debe ser calentada por el trabajo. La p\u00e1gina de superficie de este sitio expone qu\u00e9 ocurre cuando el apoyo se calienta demasiado; la p\u00e1gina de desgaste expone lo que pierde el apoyo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Qu\u00e9 implica esto para un pedido de acero para hileras<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El grado de extrusi\u00f3n es un acero de trabajo en caliente al cromo, AISI H13 y su equivalente europeo 1.2344, suministrado recocido para que el taller de matrices pueda mecanizarlo, templarlo y revenirlo, y nitrurar el apoyo. El programa 1.2344 ESR para utillaje de extrusi\u00f3n est\u00e1 en la <a href=\"https:\/\/aobosteel.com\/es\/1-2344-esr-h13-aluminum-extrusion-distributors\/\">p\u00e1gina de suministro de extrusi\u00f3n 1.2344 ESR H13<\/a>, el grado en la <a href=\"https:\/\/aobosteel.com\/es\/h13-tool-steel\/\">p\u00e1gina del acero para herramientas H13<\/a>, y la capa en la <a href=\"https:\/\/aobosteel.com\/es\/tool-steel-nitriding-guide\/\">p\u00e1gina de nitruraci\u00f3n de acero para herramientas<\/a>. Lo que se desprende de la superficie cuando la matriz trabaja demasiado caliente est\u00e1 en la <a href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-pick-up-and-die-lines\/\">p\u00e1gina de l\u00edneas de arrastre y del troquel<\/a>, el apoyo que controla el aporte de calor en la <a href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-die-bearing-length\/\">p\u00e1gina de longitud de apoyo de hilera<\/a>, el grado por componente en el <a href=\"https:\/\/aobosteel.com\/es\/best-tool-steels-for-aluminum-extrusion-dies\/\">p\u00e1gina de selecci\u00f3n de acero para dados de extrusi\u00f3n<\/a>, y la correcci\u00f3n que sigue a una prueba en el <a href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-die-correction\/\">p\u00e1gina de correcci\u00f3n de matrices de extrusi\u00f3n<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Antes de ajustar una prensa con estos rangos<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Estos son rangos publicados para aleaciones comerciales, no ajustes para una prensa o un perfil concretos. La temperatura de extrusi\u00f3n que funciona en un trabajo dado depende de la aleaci\u00f3n, la relaci\u00f3n de extrusi\u00f3n, la forma, el contenedor y la matriz, y el rango publicado es la envolvente, no el objetivo. Los l\u00edmites de temperatura del perfil corresponden a las aleaciones y condiciones de precalentamiento espec\u00edficas de la fuente. Los ajustes finales se establecen en la prensa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fuente: Extrusion of Aluminium Alloys, T. Sheppard, Kluwer Academic Publishers, 1999, tabla 5.1 y secciones 5.1 a 5.10, con la temperatura de trabajo del apoyo de Aluminum Extrusion Technology, P. K. Saha, ASM International, 2000.<\/p>","protected":false},"excerpt":{"rendered":"<p>Aluminum Extrusion Temperature: The Window, the Alloy Series, and What It Costs the Die Every alloy series has an extrusion temperature range, and the range is narrow. Below it the press runs out of pressure; above it the surface fails or the metal starts to melt at the grain boundaries. The window is set by [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":0,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"_uag_custom_page_level_css":"","site-sidebar-layout":"default","site-content-layout":"","ast-site-content-layout":"default","site-content-style":"default","site-sidebar-style":"default","ast-global-header-display":"","ast-banner-title-visibility":"","ast-main-header-display":"","ast-hfb-above-header-display":"","ast-hfb-below-header-display":"","ast-hfb-mobile-header-display":"","site-post-title":"disabled","ast-breadcrumbs-content":"","ast-featured-img":"","footer-sml-layout":"","ast-disable-related-posts":"","theme-transparent-header-meta":"","adv-header-id-meta":"","stick-header-meta":"","header-above-stick-meta":"","header-main-stick-meta":"","header-below-stick-meta":"","astra-migrate-meta-layouts":"default","ast-page-background-enabled":"default","ast-page-background-meta":{"desktop":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center 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