{"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\/ko\/knowledge-hub\/what-is-electroslag-remelting-esr\/","title":{"rendered":"What is Electroslag Remelting (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\">What is Electroslag Remelting (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\t\ubaa9\ucc28 \ud14c\uc774\ube14\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\">What is Electroslag Remelting (ESR)?<\/a><ul class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#how-the-esr-process-works\" class=\"uagb-toc-link__trigger\">How the ESR Process Works<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#key-advantages-of-esr-steel\" class=\"uagb-toc-link__trigger\">Key Advantages of ESR Steel<\/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 and VAR: A Comparison of Two Remelting Processes<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#applications-of-esr-steel\" class=\"uagb-toc-link__trigger\">Applications of ESR Steel<\/a><li class=\"uagb-toc__list\"><li class=\"uagb-toc__list\"><a href=\"#faq\" class=\"uagb-toc-link__trigger\">FAQ<\/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\">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 such as oxides and sulfides, thereby eliminating stress concentration points and effectively enhancing the steel&#8217;s fatigue resistance and mechanical strength. Aobo Steel can provide customers with tool steel produced via the ESR process, which costs approximately $250\u2013300 per ton more than conventional electric-furnace processes.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">How the ESR Process Works<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">The fundamental principle of the ESR process is to utilize molten slag as the resistive heating element. Unlike ARC smelting, the heat in ESR is provided by the Joule heating generated when alternating current (AC) passes through high-resistance liquid slag. The process involves three key steps:<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Electrode remelting: The consumable electrode (the steel to be refined) is immersed in a superheated slag pool within a water-cooled copper mold. When current passes through the slag, its temperature rises above the metal&#8217;s liquidus, causing the electrode tip to melt.<\/li>\n\n\n\n<li>Droplet Refining: As molten metal droplets formed by electrode melting pass through the liquid slag during descent, intense metal-slag interface reactions effectively remove sulfur and eliminate non-metallic inclusions such as oxides. This step is central to enhancing steel purity.<\/li>\n\n\n\n<li>Vertical Solidification: Refined molten metal droplets coalesce in the melt pool beneath the slag layer and solidify progressively from bottom to top within the water-cooled mold. Controlled cooling rates enable directional solidification of the ingot, ensuring a highly uniform microstructure.<\/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=\"Electroslag Remelting\" 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\">Electroslag Remelting<\/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=\"Structure-of-electroslag-remelting-equipment\" 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\">Key Advantages of ESR Steel<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">ESR-processed steel possesses superior properties that are difficult to achieve with traditional casting methods.<\/p>\n\n\n\n<ol class=\"wp-block-list\">\n<li>Higher Purity: ESR&#8217;s core advantage lies in its ability to significantly reduce sulfur and non-metallic inclusions. The slag used in ESR possesses extremely high chemical reactivity, effectively absorbing oxide inclusions and completing desulfurization reactions. The resulting material exhibits exceptional micro-purity, fundamentally eliminating severe defects.<\/li>\n\n\n\n<li>Isotropy: In traditional cast steel, the originally disordered grains are elongated during forging or rolling, forming fiber-like flow lines. The longitudinal direction follows these fibers, while the transverse direction is perpendicular to them. Toughness and strength in the longitudinal direction are significantly superior to those in the transverse direction. ESR ingots exhibit a highly uniform microstructure. After hot working, they maintain consistent mechanical properties both in the longitudinal and transverse directions, enabling them to withstand multi-directional stresses.<\/li>\n\n\n\n<li>Improved Microstructure: ESR ingots exhibit exceptional density and macroscopic uniformity. The controlled directional solidification process (bottom-up) effectively prevents the formation of shrinkage cavities and macroscopic segregation, addressing the common quality defects found in the central regions of conventional ingots.<\/li>\n\n\n\n<li>Superior Polishing Performance: In the optical or high-end plastic molding industries, surface finish is a critical metric. Non-metallic inclusions can cause pinholes or pitting during polishing. Due to the fine, uniform nature of inclusions in ESR steel, its polishing performance is exceptional, enabling it to easily achieve mirror-like finishes.<\/li>\n<\/ol>\n\n\n\n<h2 class=\"wp-block-heading\">ESR and VAR: A Comparison of Two Remelting Processes<\/h2>\n\n\n\n<p class=\"wp-block-paragraph\">Both ESR and Vacuum ARC(VAR) remelting (VAR) are consumable electrode remelting processes for high-performance alloys, but they exhibit significant differences in metallurgical principles:<\/p>\n\n\n\n<figure class=\"wp-block-table\"><table class=\"has-fixed-layout\"><tbody><tr><td>Feature<\/td><td>Electroslag Remelting (ESR)<\/td><td>Vacuum Arc Remelting (VAR)<\/td><\/tr><tr><td>Heating Method<\/td><td>Critical components like aerospace engine rotors are sensitive to gas content and trace elements.<\/td><td>Direct Current (DC) producing Electric Arc heat.<\/td><\/tr><tr><td>Working Environment<\/td><td>Usually conducted in the atmosphere (protected by the slag pool).<\/td><td>Conducted under a high vacuum environment.<\/td><\/tr><tr><td>Refining Mechanism<\/td><td>Chemical Refining: Uses active slag for desulfurization and removal of oxide inclusions.<\/td><td>Physical Refining: Uses high vacuum to remove dissolved gases ($H$, $N$) and volatile elements.<\/td><\/tr><tr><td>Main Advantages<\/td><td>Excellent surface quality, high structural homogeneity, and ultra-low sulfur content.<\/td><td>Extremely high gas purity and effective removal of volatile impurity elements.<\/td><\/tr><tr><td>Preferred Applications<\/td><td>Components requiring superior hot workability, polishability, and multi-directional mechanical properties.<\/td><td>Critical components, such as aerospace engine rotors, are sensitive to gas content and trace elements.<\/td><\/tr><\/tbody><\/table><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Applications of ESR Steel<\/h2>\n\n\n\n<ul class=\"wp-block-list\">\n<li><a href=\"https:\/\/aobosteel.com\/ko\/plastic-mold-steels\/\">Plastic Mold Steel<\/a>: When producing optical components or high-transparency plastics, molds require exceptional mirror polishing performance. ESR-refined S136 and <a href=\"https:\/\/aobosteel.com\/ko\/h13-tool-steel\/\">H13<\/a> exhibit highly uniform microstructures that effectively suppress etching patterns and eliminate surface defects, such as pitting, during polishing.<\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/cold-work-tool-steels\/\">Cold-work tool steel<\/a>: In high-impact applications such as <a href=\"https:\/\/aobosteel.com\/ko\/tool-steel-selection-for-blanking-and-piercing-dies\/\">blanking dies<\/a>, the material must exhibit exceptional toughness and resistance to chipping. Compared to conventional steel grades, types like <a href=\"https:\/\/aobosteel.com\/ko\/d2-tool-steel\/\">D2<\/a> ESR offer superior fatigue resistance, significantly reducing the risk of premature tool failure.<\/li>\n\n\n\n<li><a href=\"https:\/\/aobosteel.com\/ko\/hot-work-tool-steels\/\">Hot-work tool steel<\/a>: Tools such as <a href=\"https:\/\/aobosteel.com\/ko\/selection-of-tool-steels-for-die-casting-dies\/\">die-casting molds<\/a> endure severe thermal cycling, making them highly susceptible to thermal fatigue. H13 ESR is widely adopted for its excellent isotropy and non-segregated microstructure, which significantly enhances transverse toughness and thermal shock resistance, thereby extending mold service life in high-temperature environments.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-faq\">FAQ<\/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\">What is the Electroslag Remelting process?<\/strong> <p class=\"schema-faq-answer\">ESR is a <strong>secondary refining process<\/strong> designed to produce high-performance steels and high-temperature alloys. It remelts steel ingots using molten slag to significantly enhance material purity and ensure microstructural uniformity.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357143001\"><strong class=\"schema-faq-question\">How does the ESR process work?<\/strong> <p class=\"schema-faq-answer\">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.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357143606\"><strong class=\"schema-faq-question\">What are the main benefits of ESR steel?<\/strong> <p class=\"schema-faq-answer\">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.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357179493\"><strong class=\"schema-faq-question\">How much more does ESR steel cost?<\/strong> <p class=\"schema-faq-answer\">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.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357180677\"><strong class=\"schema-faq-question\">Does ESR steel improve polishing performance?<\/strong> <p class=\"schema-faq-answer\">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.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357211036\"><strong class=\"schema-faq-question\">What is the difference between ESR and VAR?<\/strong> <p class=\"schema-faq-answer\">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.<\/p> <\/div> <div class=\"schema-faq-section\" id=\"faq-question-1768357240340\"><strong class=\"schema-faq-question\">What applications is ESR steel used for?<\/strong> <p class=\"schema-faq-answer\">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.<\/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 v27.7 (Yoast SEO v27.7) - 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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In contrast, Vacuum Arc Remelting (VAR) uses a high vacuum and DC power for physical refining to remove dissolved gases.","inLanguage":"ko-KR"},"inLanguage":"ko-KR"},{"@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":"What applications is ESR steel used for?","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":"ko-KR"},"inLanguage":"ko-KR"}]}},"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\/ko\/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\/ko\/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\/ko\/wp-json\/wp\/v2\/pages\/12228","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages"}],"about":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/types\/page"}],"author":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/users\/1"}],"replies":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/comments?post=12228"}],"version-history":[{"count":0,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/12228\/revisions"}],"up":[{"embeddable":true,"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/pages\/10913"}],"wp:attachment":[{"href":"https:\/\/aobosteel.com\/ko\/wp-json\/wp\/v2\/media?parent=12228"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}