{"id":24988,"date":"2026-11-04T16:09:43","date_gmt":"2026-11-04T08:09:43","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=24988"},"modified":"2026-11-04T16:37:40","modified_gmt":"2026-11-04T08:37:40","slug":"aluminum-extrusion-die-correction","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/aluminum-extrusion-die-correction\/","title":{"rendered":"Correcci\u00f3n de una matriz de extrusi\u00f3n de aluminio: qu\u00e9 cambiar y en qu\u00e9 orden"},"content":{"rendered":"<h1 class=\"wp-block-heading\">Correcci\u00f3n de una matriz de extrusi\u00f3n de aluminio: qu\u00e9 cambiar y en qu\u00e9 orden<\/h1>\n\n\n\n<p class=\"wp-block-paragraph\">Ninguna matriz sale de la electroerosi\u00f3n por hilo con la forma que promet\u00eda su plano. El flujo del metal, la deflexi\u00f3n de la matriz bajo carga y la temperatura a lo largo del porta-matriz no son totalmente predecibles, por lo que la matriz se prueba en la prensa y se corrige. La correcci\u00f3n es donde un taller de matrices se gana su reputaci\u00f3n, y sigue un orden: primero verificar la prensa y el conjunto de herramientas, luego las ocho variables del proceso, y despu\u00e9s la matriz misma, puertos antes que porta-matrices en una matriz hueca. Esta p\u00e1gina expone ese orden y la raz\u00f3n del mismo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Primero: cosas que parecen un defecto de la matriz y no lo son<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Antes de que una fresa se acerque a la matriz, hay que descartar el lado de la prensa. La lista publicada de fallos de prensa que se presentan como problemas de matriz es corta y espec\u00edfica, y cada elemento de ella ha sido atribuido a una matriz en alg\u00fan momento.<\/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\">Lo que se ve<\/th><th class=\"has-text-align-left\" data-align=\"left\">Qu\u00e9 verificar antes de tocar la matriz<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">El perfil sale fuera de escuadra, o un lado est\u00e1 cargado en toda su longitud<\/td><td class=\"has-text-align-left\" data-align=\"left\">Alineaci\u00f3n y ajuste de la prensa; la planitud del anillo de presi\u00f3n<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">El metal escapa por la cara de la matriz, o aparece una l\u00ednea de rebaba<\/td><td class=\"has-text-align-left\" data-align=\"left\">Sellado entre la matriz y el forro del contenedor; un di\u00e1metro interior del forro desgastado<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">El extremo trasero del tocho se comporta de forma distinta al delantero<\/td><td class=\"has-text-align-left\" data-align=\"left\">Un disco ficticio desgastado que ya no sella contra el forro<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">El conjunto de herramientas se mueve o el perfil cambia cuando la prensa toma carga<\/td><td class=\"has-text-align-left\" data-align=\"left\">Un conjunto de herramientas inadecuado; soporte insuficiente detr\u00e1s de la matriz, por lo que esta se deflecta<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Una parte de la secci\u00f3n carece de metal en cada pasada<\/td><td class=\"has-text-align-left\" data-align=\"left\">Temperatura de la matriz o del contenedor; si la matriz se asienta y centra de la misma manera cada vez<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Las ocho variables que cambian el comportamiento de una matriz<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">La misma matriz se comporta de forma distinta entre turnos porque el proceso a su alrededor var\u00eda. Estas son las variables contra las que debe juzgarse la correcci\u00f3n, y todas ellas son m\u00e1s econ\u00f3micas de cambiar que la matriz:<\/p>\n\n\n\n<ul class=\"wp-block-list\"><li>Temperatura de la matriz<\/li><li>Temperatura del tocho respecto a la del contenedor<\/li><li>Calentamiento con gradiente a lo largo del tocho<\/li><li>Velocidad de extrusi\u00f3n<\/li><li>Alineaci\u00f3n y ajuste de la prensa<\/li><li>Deflexi\u00f3n del conjunto de herramientas<\/li><li>Rotaci\u00f3n de la matriz para cambiar su posici\u00f3n en la prensa<\/li><li>Lubricante, y el uso de una gu\u00eda de cartucho<\/li><\/ul>\n\n\n\n<p class=\"wp-block-paragraph\">Dos de ellas valen m\u00e1s que el resto en la pr\u00e1ctica. Rotar la matriz es gratuito y comprueba si el defecto sigue a la matriz o a la prensa: si el lado cargado se mueve con la matriz, es la matriz; si permanece en el mismo lado de la prensa, es la prensa. Y el calentamiento con gradiente comprueba si el defecto es t\u00e9rmico: un tocho m\u00e1s caliente en la parte delantera se extruye de forma distinta que uno calentado uniformemente, y la diferencia se manifiesta como una forma que cambia desde el frente de la pasada hasta el final.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Matrices macizas: fresar la c\u00e1mara o el porta-matriz, y medir el corte<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">En una matriz maciza, la correcci\u00f3n es una modificaci\u00f3n de la c\u00e1mara o de la placa alimentadora, o un cambio en la longitud del porta-matriz, trabajado desde la cara frontal de la matriz o desde el lado de salida. El m\u00e9todo importa tanto como la ubicaci\u00f3n. La pr\u00e1ctica publicada es fresar con una fresadora en lugar de una amoladora flexible, porque un corte de fresado puede medirse y registrarse. Una amoladora elimina metal que nadie puede cuantificar, y la siguiente correcci\u00f3n parte de una inc\u00f3gnita.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El n\u00famero registrado es el objetivo del ejercicio. Si la correcci\u00f3n es una longitud de porta-matriz, la cifra vuelve al dise\u00f1ador de matrices; si es un cambio dimensional, la cifra vuelve al fabricante de matrices para que el programa de electroerosi\u00f3n por hilo cambie en la pr\u00f3xima matriz de esa forma. Una correcci\u00f3n que no se registra se paga de nuevo en el siguiente pedido.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Matrices huecas: puertos antes que porta-matrices<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Una matriz hueca es m\u00e1s dif\u00edcil porque el metal pasa por tres etapas: a trav\u00e9s de los puertos en el mandril, a trav\u00e9s de la c\u00e1mara de soldadura y a trav\u00e9s del porta-matriz. Los puertos deciden cu\u00e1nto metal recibe cada pata del perfil, por lo que fijan el equilibrio. Los porta-matrices solo deciden cu\u00e1nta resistencia encuentra ese metal en la salida. Corregir primero el porta-matriz en una matriz cuyos puertos est\u00e1n desequilibrados es la cl\u00e1sica tarde perdida: el porta-matriz no arreglar\u00e1 una pata que est\u00e1 siendo privada de metal.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Los defectos que env\u00edan una matriz hueca de vuelta al banco son espec\u00edficos, y cada uno apunta a una etapa:<\/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\">Defecto<\/th><th class=\"has-text-align-left\" data-align=\"left\">D\u00f3nde buscar primero<\/th><\/tr><\/thead><tbody><tr><td class=\"has-text-align-left\" data-align=\"left\">Torsi\u00f3n a lo largo de la longitud<\/td><td class=\"has-text-align-left\" data-align=\"left\">Equilibrio de puertos entre las patas, luego distribuci\u00f3n del porta-matriz<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Angularidad fuera de tolerancia<\/td><td class=\"has-text-align-left\" data-align=\"left\">Volumen de puerto que alimenta las dos paredes que forman el \u00e1ngulo<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Esquina abierta o esquina partida<\/td><td class=\"has-text-align-left\" data-align=\"left\">C\u00e1mara de soldadura y el puerto que alimenta la esquina<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Pared convexa o c\u00f3ncava<\/td><td class=\"has-text-align-left\" data-align=\"left\">Longitud de apoyo a lo largo de esa pared, y soporte detr\u00e1s de ella<\/td><\/tr><tr><td class=\"has-text-align-left\" data-align=\"left\">Espesor de pared desigual<\/td><td class=\"has-text-align-left\" data-align=\"left\">Primero el equilibrio de los puertos; despu\u00e9s el apoyo<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<p class=\"wp-block-paragraph\">Una variable m\u00e1s pertenece solo a la matriz hueca: la profundidad del puente y la forma de la c\u00e1mara de soldadura. Ambas se fijan en el dise\u00f1o y ambas cambian c\u00f3mo se encuentran los dos flujos. Si los defectos se repiten en matrices del mismo dise\u00f1o, la correcci\u00f3n corresponde al dise\u00f1o, no al banco de trabajo.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">El corrector de matrices pertenece a la prensa<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El procedimiento publicado es directo al respecto: la persona que corrige la matriz debe estar de pie junto a la prensa durante la prueba, no leyendo un informe despu\u00e9s. Estar all\u00ed le da las variables de prensa, palanquilla y matriz al mismo tiempo, que es lo que separa una correcci\u00f3n de una conjetura, y le permite decir al fabricante de matrices qu\u00e9 cambiar cuando la soluci\u00f3n est\u00e1 fuera del banco de trabajo.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">En la pr\u00e1ctica, eso significa dos registros por prueba: los ajustes de proceso con los que se oper\u00f3 la matriz y la forma de la primera pieza. Sin los ajustes, una matriz que oper\u00f3 mal no se puede distinguir de una matriz que oper\u00f3 mal porque la prensa estaba fr\u00eda.<\/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\">La correcci\u00f3n es remoci\u00f3n de metal, as\u00ed que la matriz tiene que poder soportarla. El grado de acero para matrices de extrusi\u00f3n es acero cromo para trabajo en caliente, AISI H13 y su equivalente europeo 1.2344, suministrado recocido para que se pueda recortar un apoyo y remecanizar una cavidad; la dureza de trabajo y el revenido que la alcanza se indican en la p\u00e1gina del acero para matrices, y la nitruraci\u00f3n que sigue a una correcci\u00f3n en la p\u00e1gina de nitruraci\u00f3n. El programa 1.2344 ESR para herramientas 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>. El apoyo que se recorta se describe en la <a href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-die-bearing-length\/\">p\u00e1gina de longitud de apoyo de hilera<\/a>, el conjunto a su alrededor en la <a href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-die-types-and-tooling\/\">p\u00e1gina de tipos de dados y utillaje<\/a>, los defectos que no son culpa de la matriz 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>, y la ventana de prensa en la <a href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-temperature\/\">p\u00e1gina de temperatura de extrusi\u00f3n<\/a>.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">El liner y el bloque ficticio que sellan contra esa cara del dado est\u00e1n en la <a href=\"https:\/\/aobosteel.com\/es\/extrusion-container-liner-and-dummy-block\/\">p\u00e1gina de liner del contenedor y bloque ficticio<\/a>.<\/p>\n\n\n\n<h3 class=\"wp-block-heading\">Antes de cortar una matriz a partir de esta p\u00e1gina<\/h3>\n\n\n\n<p class=\"wp-block-paragraph\">Estos son los principios publicados y las categor\u00edas de defectos, no un programa de correcci\u00f3n para una matriz espec\u00edfica. La cantidad a remover de un apoyo o un puerto la fijan la matriz, la aleaci\u00f3n, la prensa y la prueba, y ninguna tabla se transfiere entre talleres. El orden de las verificaciones es la parte que se transfiere. La correcci\u00f3n final se confirma en la prensa.<\/p>\n\n\n\n<p class=\"wp-block-paragraph\">Fuente: Aluminum Extrusion Technology, P. K. Saha, ASM International, 2000, secci\u00f3n 4 correcci\u00f3n de matrices, p\u00e1ginas 105 a 108.<\/p>","protected":false},"excerpt":{"rendered":"<p>Correcting an Aluminum Extrusion Die: What to Change, and in What Order No die comes off the wire EDM running the shape its drawing promised. The metal flow, the die deflection under load and the temperature along the bearing are not fully predictable, so the die is tried at the press and corrected. The correction [&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 center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"ast-content-background-meta":{"desktop":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"tablet":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""},"mobile":{"background-color":"var(--ast-global-color-5)","background-image":"","background-repeat":"repeat","background-position":"center center","background-size":"auto","background-attachment":"scroll","background-type":"","background-media":"","overlay-type":"","overlay-color":"","overlay-opacity":"","overlay-gradient":""}},"footnotes":""},"class_list":["post-24988","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v28.8 (Yoast SEO v28.8) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>Aluminum Extrusion Die Correction | Aobo Steel<\/title>\n<meta name=\"description\" content=\"Rule out the press first, then the eight process variables, then ports before bearings. What to cut, how to record it, and why a grinder is the wrong tool.\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/aobosteel.com\/es\/aluminum-extrusion-die-correction\/\" \/>\n<meta property=\"og:locale\" content=\"es_ES\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Correcting an Aluminum Extrusion Die: What to Change, and in What Order\" \/>\n<meta property=\"og:description\" content=\"Rule out the press first, then the eight process variables, then ports before bearings. 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