{"id":12228,"date":"2026-01-14T10:30:01","date_gmt":"2026-01-14T02:30:01","guid":{"rendered":"https:\/\/aobosteel.com\/?page_id=12228"},"modified":"2026-01-14T10:58:14","modified_gmt":"2026-01-14T02:58:14","slug":"what-is-electroslag-remelting-esr","status":"publish","type":"page","link":"https:\/\/aobosteel.com\/es\/knowledge-hub\/what-is-electroslag-remelting-esr\/","title":{"rendered":"\u00bfQu\u00e9 es la refusi\u00f3n por electroescoria (ESR)?"},"content":{"rendered":"<div class=\"wp-block-uagb-container uagb-block-22ae26c8 alignfull uagb-is-root-container\"><div class=\"uagb-container-inner-blocks-wrap\">\n<h1 class=\"wp-block-heading has-text-align-center\" id=\"h-what-is-electroslag-remelting-esr\">\u00bfQu\u00e9 es la refusi\u00f3n por electroescoria (ESR)?<\/h1>\n\n\n\t\t\t\t<div class=\"wp-block-uagb-table-of-contents uagb-toc__align-left uagb-toc__columns-1 uagb-toc__collapse uagb-block-d0fa136b\"\n\t\t\t\t\tdata-scroll= \"1\"\n\t\t\t\t\tdata-offset= \"30\"\n\t\t\t\t\tstyle=\"\"\n\t\t\t\t>\n\t\t\t\t<div class=\"uagb-toc__wrap\">\n\t\t\t\t\t\t<div class=\"uagb-toc__title\">\n\t\t\t\t\t\t\tTabla de contenidos\t\t\t\t\t\t\t\t\t\t\t\t\t<svg xmlns=\"https:\/\/www.w3.org\/2000\/svg\" viewbox= \"0 0 384 512\"><path d=\"M192 384c-8.188 0-16.38-3.125-22.62-9.375l-160-160c-12.5-12.5-12.5-32.75 0-45.25s32.75-12.5 45.25 0L192 306.8l137.4-137.4c12.5-12.5 32.75-12.5 45.25 0s12.5 32.75 0 45.25l-160 160C208.4 380.9 200.2 384 192 384z\"><\/path><\/svg>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t\t<div class=\"uagb-toc__list-wrap\">\n\t\t\t\t\t\t<ol class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#what-is-electroslag-remelting-esr\" class=\"uagb-toc-link__trigger\">\u00bfQu\u00e9 es la refusi\u00f3n por electroescoria (ESR)?<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#how-the-esr-process-works\" class=\"uagb-toc-link__trigger\">C\u00f3mo funciona el proceso ESR<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#key-advantages-of-esr-steel\" class=\"uagb-toc-link__trigger\">Ventajas clave del acero ESR<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#esr-and-var-a-comparison-of-two-remelting-processes\" class=\"uagb-toc-link__trigger\">ESR y VAR: una comparaci\u00f3n de dos procesos de refusi\u00f3n<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#applications-of-esr-steel\" class=\"uagb-toc-link__trigger\">Aplicaciones del acero ESR<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#faq\" class=\"uagb-toc-link__trigger\">Preguntas frecuentes<\/a><\/ul><\/ol>\t\t\t\t\t<\/div>\n\t\t\t\t\t\t\t\t\t<\/div>\n\t\t\t\t<\/div>\n\t\t\t\n\n\n<p class=\"wp-block-paragraph\">La Refusi\u00f3n por Electroescoria (ESR) es un proceso de refinaci\u00f3n secundaria que se utiliza para producir aceros de alto rendimiento y aleaciones de alta temperatura. Mediante la refusi\u00f3n de lingotes de acero, el proceso ESR mejora significativamente la pureza del material y la uniformidad microestructural. En comparaci\u00f3n con la siderurgia tradicional, el acero procesado mediante ESR presenta propiedades superiores. La clave de este proceso reside en la reducci\u00f3n significativa de inclusiones no met\u00e1licas, como \u00f3xidos y sulfuros, eliminando as\u00ed los puntos de concentraci\u00f3n de tensiones y mejorando eficazmente la resistencia a la fatiga y la resistencia mec\u00e1nica del acero. Aobo Steel puede proporcionar a sus clientes acero para herramientas producido mediante el proceso ESR, cuyo coste es aproximadamente entre $ y 250-300 T por tonelada superior al de los procesos convencionales con horno el\u00e9ctrico.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">C\u00f3mo funciona el proceso ESR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El principio fundamental del proceso ESR es utilizar escoria fundida como elemento calefactor resistivo. A diferencia de la fundici\u00f3n por arco el\u00e9ctrico (ARC), el calor en ESR se obtiene mediante el calentamiento Joule generado al pasar corriente alterna (CA) a trav\u00e9s de escoria l\u00edquida de alta resistencia. El proceso consta de tres pasos clave:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Refusi\u00f3n del electrodo: El electrodo consumible (el acero a refinar) se sumerge en un ba\u00f1o de escoria sobrecalentado dentro de un molde de cobre refrigerado por agua. Al pasar la corriente a trav\u00e9s de la escoria, su temperatura supera el punto de fusi\u00f3n del metal, lo que provoca la fusi\u00f3n de la punta del electrodo.<\/li>\n\n\n\n<li>Refinaci\u00f3n de gotas: A medida que las gotas de metal fundido, formadas por la fusi\u00f3n del electrodo, atraviesan la escoria l\u00edquida durante el descenso, se producen intensas reacciones en la interfaz metal-escoria que eliminan eficazmente el azufre y las inclusiones no met\u00e1licas, como los \u00f3xidos. Este paso es fundamental para mejorar la pureza del acero.<\/li>\n\n\n\n<li>Solidificaci\u00f3n vertical: Las gotas de metal fundido refinado se fusionan en el ba\u00f1o de fusi\u00f3n bajo la capa de escoria y se solidifican progresivamente de abajo a arriba dentro del molde refrigerado por agua. Las velocidades de enfriamiento controladas permiten la solidificaci\u00f3n direccional del lingote, garantizando una microestructura altamente uniforme.<\/li>\n<\/ol>\n\n\n\n<div class=\"wp-block-uagb-container uagb-block-d3e3c8b7\">\n<figure class=\"wp-block-gallery has-nested-images columns-default is-cropped wp-block-gallery-1 is-layout-flex wp-block-gallery-is-layout-flex\">\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"1000\" height=\"1000\" data-id=\"2787\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/what-is-ESR.jpg\" alt=\"Refusi\u00f3n por electroescoria\" class=\"wp-image-2787\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/what-is-ESR.jpg 1000w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/what-is-ESR-300x300.jpg 300w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/what-is-ESR-150x150.jpg 150w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/what-is-ESR-768x768.jpg 768w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/what-is-ESR-12x12.jpg 12w\" sizes=\"auto, (max-width: 1000px) 100vw, 1000px\" \/><figcaption class=\"wp-element-caption\">Refusi\u00f3n por electroescoria<\/figcaption><\/figure>\n\n\n\n<figure class=\"wp-block-image size-large\"><img loading=\"lazy\" decoding=\"async\" width=\"431\" height=\"583\" data-id=\"1812\" src=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/Structure-of-electroslag-remelting-equipment.webp\" alt=\"Estructura del equipo de refusi\u00f3n por electroescoria\" class=\"wp-image-1812\" srcset=\"https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/Structure-of-electroslag-remelting-equipment.webp 431w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/Structure-of-electroslag-remelting-equipment-222x300.webp 222w, https:\/\/aobosteel.com\/wp-content\/uploads\/2025\/01\/Structure-of-electroslag-remelting-equipment-9x12.webp 9w\" sizes=\"auto, (max-width: 431px) 100vw, 431px\" \/><\/figure>\n<\/figure>\n\n\n\n<script type=\"application\/ld+json\">{\n    \"@context\": \"https:\\\/\\\/schema.org\\\/\",\n    \"@type\": \"ImageObject\",\n    \"contentUrl\": \"https:\\\/\\\/aobosteel.com\\\/wp-content\\\/uploads\\\/2025\\\/01\\\/what-is-ESR.jpg\",\n    \"license\": \"https:\\\/\\\/aobosteel.com\\\/\",\n    \"acquireLicensePage\": \"https:\\\/\\\/aobosteel.com\\\/contact-us\",\n    \"creditText\": \"Aobo Steel - Tool Steel Expert\",\n    \"creator\": {\n        \"@type\": \"Organization\",\n        \"name\": \"Aobo Steel\",\n        \"url\": \"https:\\\/\\\/aobosteel.com\"\n    },\n    \"description\": \"Aobo Steel's ESR (Electro-Slag Remelting) process ensures high purity and uniformity for tool steel. With 20+ years of forging experience, we provide expert steel solutions.\",\n    \"caption\": \"Aobo Steel ESR (Electro-Slag Remelting) equipment for high-quality tool steel production\"\n}<\/script>\n<\/div>\n\n\n\n<h2 class=\"wp-block-heading\">Ventajas clave del acero ESR<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">El acero procesado con ESR posee propiedades superiores que son dif\u00edciles de lograr con los m\u00e9todos de fundici\u00f3n tradicionales.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Mayor pureza: La principal ventaja de la ESR reside en su capacidad para reducir significativamente las inclusiones de azufre y no met\u00e1licas. La escoria utilizada en la ESR posee una reactividad qu\u00edmica extremadamente alta, absorbiendo eficazmente las inclusiones de \u00f3xido y completando las reacciones de desulfuraci\u00f3n. El material resultante presenta una micropureza excepcional, eliminando fundamentalmente los defectos graves.<\/li>\n\n\n\n<li>Isotrop\u00eda: En el acero fundido tradicional, los granos originalmente desordenados se alargan durante el forjado o laminado, formando l\u00edneas de flujo fibrosas. La direcci\u00f3n longitudinal sigue estas fibras, mientras que la transversal es perpendicular a ellas. La tenacidad y la resistencia longitudinales son significativamente superiores a las transversales. Los lingotes ESR presentan una microestructura muy uniforme. Tras el trabajo en caliente, mantienen propiedades mec\u00e1nicas constantes tanto longitudinal como transversalmente, lo que les permite soportar tensiones multidireccionales.<\/li>\n\n\n\n<li>Microestructura mejorada: Los lingotes ESR presentan una densidad excepcional y una uniformidad macrosc\u00f3pica. El proceso de solidificaci\u00f3n direccional controlada (de abajo a arriba) previene eficazmente la formaci\u00f3n de cavidades por contracci\u00f3n y la segregaci\u00f3n macrosc\u00f3pica, solucionando as\u00ed los defectos de calidad comunes que se encuentran en las regiones centrales de los lingotes convencionales.<\/li>\n\n\n\n<li>Pulido Superior: En las industrias \u00f3ptica y de moldeo de pl\u00e1sticos de alta gama, el acabado superficial es un par\u00e1metro crucial. Las inclusiones no met\u00e1licas pueden causar poros o picaduras durante el pulido. Gracias a la finura y uniformidad de las inclusiones en el acero ESR, su pulido es excepcional, lo que permite lograr f\u00e1cilmente acabados de espejo.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">ESR y VAR: una comparaci\u00f3n de dos procesos de refusi\u00f3n<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Tanto la refusi\u00f3n ESR como la refusi\u00f3n ARC (VAR) al vac\u00edo (VAR) son procesos de refusi\u00f3n de electrodos consumibles para aleaciones de alto rendimiento, pero presentan diferencias significativas en los principios metal\u00fargicos:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Caracter\u00edstica<\/td><td>Refusi\u00f3n por electroescoria (ESR)<\/td><td>Refusi\u00f3n por arco al vac\u00edo (VAR)<\/td><\/tr><tr><td>M\u00e9todo de calentamiento<\/td><td>Los componentes cr\u00edticos, como los rotores de los motores aeroespaciales, son sensibles al contenido de gas y a los oligoelementos.<\/td><td>Corriente continua (CC) que produce calor de arco el\u00e9ctrico.<\/td><\/tr><tr><td>Entorno de trabajo<\/td><td>Generalmente se lleva a cabo en la atm\u00f3sfera (protegida por el estanque de escoria).<\/td><td>Realizado en ambiente de alto vac\u00edo.<\/td><\/tr><tr><td>Mecanismo de refinaci\u00f3n<\/td><td>Refinaci\u00f3n qu\u00edmica: utiliza escoria activa para la desulfuraci\u00f3n y eliminaci\u00f3n de inclusiones de \u00f3xido.<\/td><td>Refinaci\u00f3n f\u00edsica: utiliza alto vac\u00edo para eliminar gases disueltos ($H$, $N$) y elementos vol\u00e1tiles.<\/td><\/tr><tr><td>Principales ventajas<\/td><td>Excelente calidad superficial, alta homogeneidad estructural y contenido ultra bajo de azufre.<\/td><td>Pureza de gas extremadamente alta y eliminaci\u00f3n efectiva de elementos de impurezas vol\u00e1tiles.<\/td><\/tr><tr><td>Aplicaciones preferidas<\/td><td>Componentes que requieren trabajabilidad en caliente superior, capacidad de pulido y propiedades mec\u00e1nicas multidireccionales.<\/td><td>Los componentes cr\u00edticos, como los rotores de los motores aeroespaciales, son sensibles al contenido de gas y a los oligoelementos.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Aplicaciones del acero ESR<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/aobosteel.com\/es\/plastic-mold-steels\/\">Molde de pl\u00e1stico de acero<\/a>:Al producir componentes \u00f3pticos o pl\u00e1sticos de alta transparencia, los moldes requieren un rendimiento de pulido de espejo excepcional. S136 refinado por ESR y <a href=\"https:\/\/aobosteel.com\/es\/h13-tool-steel\/\">H13<\/a> presentan microestructuras altamente uniformes que suprimen eficazmente los patrones de grabado y eliminan defectos de superficie, como picaduras, durante el pulido.<\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/es\/cold-work-tool-steels\/\">Acero para herramientas para trabajo en fr\u00edo<\/a>:En aplicaciones de alto impacto como <a href=\"https:\/\/aobosteel.com\/es\/tool-steel-selection-for-blanking-and-piercing-dies\/\">matrices de corte<\/a>, El material debe presentar una tenacidad y resistencia al astillado excepcionales. En comparaci\u00f3n con los grados de acero convencionales, tipos como <a href=\"https:\/\/aobosteel.com\/es\/d2-tool-steel\/\">D2<\/a> Los ESR ofrecen una resistencia superior a la fatiga, lo que reduce significativamente el riesgo de falla prematura de la herramienta.<\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/es\/hot-work-tool-steels\/\">Acero para herramientas para trabajo en caliente<\/a>:Herramientas como <a href=\"https:\/\/aobosteel.com\/es\/selection-of-tool-steels-for-die-casting-dies\/\">moldes de fundici\u00f3n a presi\u00f3n<\/a> Soportan ciclos t\u00e9rmicos severos, lo que los hace muy susceptibles a la fatiga t\u00e9rmica. El H13 ESR se adopta ampliamente por su excelente isotrop\u00eda y microestructura no segregada, lo que mejora significativamente la tenacidad transversal y la resistencia al choque t\u00e9rmico, prolongando as\u00ed la vida \u00fatil del molde en entornos de alta temperatura.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq\">Preguntas frecuentes<\/h2>\n\n\n\n<div class=\"schema-faq wp-block-yoast-faq-block\"><div class=\"schema-faq-section\" id=\"faq-question-1768357123632\"><strong class=\"schema-faq-question\">\u00bfQu\u00e9 es el proceso de refusi\u00f3n por electroescoria?<\/strong> <p class=\"schema-faq-answer\">ESR es una <strong>proceso de refinaci\u00f3n secundaria<\/strong> Dise\u00f1ado para producir aceros de alto rendimiento y aleaciones de alta temperatura. Refunde lingotes de acero utilizando escoria fundida para mejorar significativamente la pureza del material y garantizar la uniformidad microestructural.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357143001\"><strong class=\"schema-faq-question\">\u00bfC\u00f3mo funciona el proceso ESR?<\/strong> <p class=\"schema-faq-answer\">Usos de ESR <strong>escoria fundida como elemento calefactor resistivo<\/strong>. La corriente alterna (CA) pasa a trav\u00e9s de la escoria para generar calor Joule, fundiendo un electrodo consumible, que luego cae a trav\u00e9s de la escoria para su refinaci\u00f3n y solidificaci\u00f3n.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357143606\"><strong class=\"schema-faq-question\">\u00bfCu\u00e1les son los principales beneficios del acero ESR?<\/strong> <p class=\"schema-faq-answer\">El proceso crea acero con <strong>mayor pureza<\/strong> al reducir el azufre y las inclusiones no met\u00e1licas. Tambi\u00e9n proporciona <strong>isotrop\u00eda<\/strong>, garantizando propiedades mec\u00e1nicas consistentes tanto en direcci\u00f3n longitudinal como transversal y evitando la segregaci\u00f3n macrosc\u00f3pica.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357179493\"><strong class=\"schema-faq-question\">\u00bfCu\u00e1nto m\u00e1s cuesta el acero ESR?<\/strong> <p class=\"schema-faq-answer\">El acero para herramientas producido mediante el proceso ESR normalmente cuesta aproximadamente\u00a0<strong>$250\u2013300 por tonelada m\u00e1s<\/strong>\u00a0que el acero producido mediante procesos de horno el\u00e9ctrico convencionales.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357180677\"><strong class=\"schema-faq-question\">\u00bfEl acero ESR mejora el rendimiento del pulido?<\/strong> <p class=\"schema-faq-answer\">S\u00ed, el acero ESR logra <strong>acabados tipo espejo<\/strong> y elimina poros o picaduras. Esto se debe a que el proceso elimina inclusiones no met\u00e1licas, que suelen ser la causa de defectos superficiales durante el pulido.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357211036\"><strong class=\"schema-faq-question\">\u00bfCu\u00e1l es la diferencia entre ESR y VAR?<\/strong> <p class=\"schema-faq-answer\">Usos de ESR <strong>escoria activa y alimentaci\u00f3n de CA<\/strong> Para la refinaci\u00f3n qu\u00edmica (desulfuraci\u00f3n) en un entorno atmosf\u00e9rico. Por el contrario, la refusi\u00f3n por arco al vac\u00edo (VAR) utiliza alto vac\u00edo y corriente continua para la refinaci\u00f3n f\u00edsica, eliminando los gases disueltos.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357240340\"><strong class=\"schema-faq-question\">\u00bfPara qu\u00e9 aplicaciones se utiliza el acero ESR?<\/strong> <p class=\"schema-faq-answer\">Se utiliza para <strong>acero para moldes de pl\u00e1stico<\/strong> que requiere pulido de espejo, <strong>acero para herramientas en fr\u00edo<\/strong> que requieren resistencia a la fatiga, y\u00a0<strong>acero para herramientas de trabajo en caliente<\/strong>\u00a0(como H13) que requieren resistencia al choque t\u00e9rmico y una vida \u00fatil prolongada.<\/p> <\/div> <\/div>\n<\/div><\/div>","protected":false},"excerpt":{"rendered":"<p>What is Electroslag Remelting (ESR)? Electroslag Remelting (ESR) is a secondary refining process used to produce high-performance steels and high-temperature alloys. By remelting steel ingots, the ESR process significantly enhances material purity and microstructural uniformity. Compared to traditional steelmaking, ESR-processed steel exhibits superior properties. The core of this process lies in significantly reducing non-metallic inclusions [&hellip;]<\/p>\n","protected":false},"author":1,"featured_media":0,"parent":10913,"menu_order":0,"comment_status":"closed","ping_status":"closed","template":"","meta":{"content-type":"knowledge-article","_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":"set","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-12228","page","type-page","status-publish","hentry"],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v27.6 (Yoast SEO v27.6) - https:\/\/yoast.com\/product\/yoast-seo-premium-wordpress\/ -->\n<title>What is Electroslag Remelting (ESR)? - AoboSteel<\/title>\n<meta name=\"description\" content=\"Discover how Electroslag Remelting (ESR) enhances tool steel purity, isotropy, and mirror polishing. 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It remelts steel ingots using molten slag to significantly enhance material purity and ensure microstructural uniformity.\",\"inLanguage\":\"es\"},\"inLanguage\":\"es\"},{\"@type\":\"Question\",\"@id\":\"https:\\\/\\\/aobosteel.com\\\/knowledge-hub\\\/what-is-electroslag-remelting-esr\\\/#faq-question-1768357143001\",\"position\":2,\"url\":\"https:\\\/\\\/aobosteel.com\\\/knowledge-hub\\\/what-is-electroslag-remelting-esr\\\/#faq-question-1768357143001\",\"name\":\"How does the ESR process work?\",\"answerCount\":1,\"acceptedAnswer\":{\"@type\":\"Answer\",\"text\":\"ESR uses <strong>molten slag as a resistive heating element<\\\/strong>. 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It remelts steel ingots using molten slag to significantly enhance material purity and ensure microstructural uniformity.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357143001","position":2,"url":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357143001","name":"\u00bfC\u00f3mo funciona el proceso ESR?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"ESR uses <strong>molten slag as a resistive heating element<\/strong>. Alternating current (AC) passes through the slag to generate Joule heat, melting a consumable electrode, which then drops through the slag for refining and solidification.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357143606","position":3,"url":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357143606","name":"\u00bfCu\u00e1les son los principales beneficios del acero ESR?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"The process creates steel with <strong>higher purity<\/strong> by reducing sulfur and non-metallic inclusions. It also provides <strong>isotropy<\/strong>, ensuring consistent mechanical properties in both longitudinal and transverse directions, and prevents macroscopic segregation.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357179493","position":4,"url":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357179493","name":"\u00bfCu\u00e1nto m\u00e1s cuesta el acero ESR?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Tool steel produced by the ESR process typically costs approximately\u00a0<strong>$250\u2013300 per ton more<\/strong>\u00a0than steel produced by conventional electric-furnace processes.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357180677","position":5,"url":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357180677","name":"\u00bfEl acero ESR mejora el rendimiento del pulido?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"Yes, ESR steel achieves <strong>mirror-like finishes<\/strong> and eliminates pinholes or pitting. This is because the process removes non-metallic inclusions, which are usually the cause of surface defects during polishing.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357211036","position":6,"url":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357211036","name":"\u00bfCu\u00e1l es la diferencia entre ESR y VAR?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"ESR uses <strong>active slag and AC power<\/strong> for chemical refining (desulfurization) in an atmospheric environment. In contrast, Vacuum Arc Remelting (VAR) uses a high vacuum and DC power for physical refining to remove dissolved gases.","inLanguage":"es"},"inLanguage":"es"},{"@type":"Question","@id":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357240340","position":7,"url":"https:\/\/aobosteel.com\/knowledge-hub\/what-is-electroslag-remelting-esr\/#faq-question-1768357240340","name":"\u00bfPara qu\u00e9 aplicaciones se utiliza el acero ESR?","answerCount":1,"acceptedAnswer":{"@type":"Answer","text":"It is used for <strong>plastic mold steel<\/strong> requiring mirror polishing, <strong>cold-work tool steel<\/strong> requiring fatigue resistance, and\u00a0<strong>hot-work tool steel<\/strong>\u00a0(such as H13) requiring thermal shock resistance and extended service life.","inLanguage":"es"},"inLanguage":"es"}]}},"uagb_featured_image_src":{"full":false,"thumbnail":false,"medium":false,"medium_large":false,"large":false,"1536x1536":false,"2048x2048":false,"trp-custom-language-flag":false},"uagb_author_info":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"uagb_comment_info":0,"uagb_excerpt":"What is Electroslag Remelting (ESR)? Electroslag Remelting (ESR) is a secondary refining process used to produce high-performance steels and high-temperature alloys. By remelting steel ingots, the ESR process significantly enhances material purity and microstructural uniformity. Compared to traditional steelmaking, ESR-processed steel exhibits superior properties. The core of this process lies in significantly reducing non-metallic inclusions&hellip;","rttpg_featured_image_url":null,"rttpg_author":{"display_name":"Evan","author_link":"https:\/\/aobosteel.com\/es\/blog\/author\/admin\/"},"rttpg_comment":0,"rttpg_category":null,"rttpg_excerpt":"What is Electroslag Remelting (ESR)? Electroslag Remelting (ESR) is a secondary refining process used to produce high-performance steels and high-temperature alloys. By remelting steel ingots, the ESR process significantly enhances material purity and microstructural uniformity. Compared to traditional steelmaking, ESR-processed steel exhibits superior properties. The core of this process lies in significantly reducing non-metallic inclusions&hellip;","_links":{"self":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/12228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/comments?post=12228"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/12228\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/pages\/10913"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/es\/wp-json\/wp\/v2\/media?parent=12228"}],"curies":[{"name":"gracias","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}