{"id":379,"date":"2023-01-25T19:44:35","date_gmt":"2023-01-25T18:44:35","guid":{"rendered":"http:\/\/haertha.dev.neuekommunikation.de\/wordpress\/?post_type=verfahren&#038;p=379"},"modified":"2026-03-24T08:42:36","modified_gmt":"2026-03-24T07:42:36","slug":"intermediate-annealing","status":"publish","type":"verfahren","link":"https:\/\/haertha.de\/en\/process\/intermediate-annealing\/","title":{"rendered":"Intermediate annealing"},"content":{"rendered":"<div id=\"verfahren-header-block_a81b9d69634a83e51b22664405dbc645\" class=\"verfahren-header-video\" >   \r\n\r\n    <div class=\"embed-container popup-vimeo\">\r\n        <iframe loading=\"lazy\" title=\"LOOP_Vakuumha\u0308rten\" src=\"https:\/\/player.vimeo.com\/video\/813128839?h=62fd38bdb2&amp;dnt=1&amp;app_id=122963&#038;controls=0&#038;hd=1&#038;loop=1&#038;autohide=0&#038;dnt=1&#038;autoplay=1&#038;muted=1\" width=\"640\" height=\"300\" frameborder=\"0\" allow=\"autoplay; fullscreen; picture-in-picture; clipboard-write; encrypted-media; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\"><\/iframe>    <\/div>  \r\n    \r\n    \r\n<\/div>\r\n\n\n\r\n<div id=\"verfahren-text-block_1e50783402ffc865febb65cd1ad49f23\" class=\"verfahren-text toc\" data-toctitle=\"Anwendungsbereiche\" style=\"\">\r\n    <div class=\"row\">\r\n        <div class=\"col-12\">\r\n            <div class=\"content-wrapper\" >\r\n\r\n                            <div class=\"box\">\r\n                                            <div class=\"nummber\"> \r\n                            \r\n                        <\/div>\r\n                        \r\n                                            <h2 class=\"headline\">the process and its advantages<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p class=\" translation-block\">The objective of intermediate annealing is to <strong>optimise the crystalline structure<\/strong> of the material and thus improve its mechanical properties. Depending on the material and application, intermediate annealing can also help to increase corrosion resistance and resistance to high temperatures.<\/p>\n<p class=\" translation-block\">Intermediate annealing can be used <strong>directly during the production process<\/strong> of a workpiece, for example after <a href=\"https:\/\/haertha.de\/verfahren\/einsatzhaerten\/\" target=\"_self\"><strong>case hardening<\/strong><\/a>. For this, after carburising or grain refining, the workpiece is heated below the lower transformation point for an extended period, and then slowly cooled.<\/p>\n<p class=\" translation-block\">The process is also used to <strong>extend the service life<\/strong> of previously used components, for example moulded steel components in die casting moulds. The temperature changes resulting from use have created stresses in the components, and these are now relieved.<\/p>\n<p class=\" translation-block\">In <strong> quenched and tempered steel parts<\/strong> , intermediate annealing corresponds, in principle, to a tempering treatment. The selected temperature is between 30 \u00b0C and 50 \u00b0C lower than the tempering temperature during production. The dwell time is between two and four hours. This type of intermediate annealing can be repeated after the component was used for a further period.<\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"font-weight: 400;\">The advantages at a glance<\/span><\/h3>\n<p>Intermediate annealing offers various advantages for workpieces in production, and for components already in use:<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li>Reduced stresses<\/li>\n<li>Improved formability<\/li>\n<li>Improved workability<\/li>\n<li>No cracking, even in multi-stage transformation processes<\/li>\n<li>Longer service life<\/li>\n<\/ul>\n<\/p>\r\n                    <div class=\"acf-innerblocks-container\"><\/div>\r\n                    \r\n                    <style>\r\n                        .sonder-zeichen{\r\n                            display: flex;\r\n                            flex-direction: row;\r\n                            gap: 15px;\r\n                        }\r\n                        .zeichen{\r\n                            color: #C9C9C9;\r\n                            position: relative;\r\n                            line-height: 66px;\r\n                            font-size: clamp(2.75rem, 1.9766rem + 2.1484vw, 4.125rem);\r\n                        }\r\n                    <\/style>\r\n                    \r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\r\n\n\n\r\n<div id=\"verfahren-text-block_c940d3de864eea47c48f3059be8fd1b6\" class=\"verfahren-text toc\" data-toctitle=\"Rekristallisationsgl\u00fchen von Stahl\" style=\"\">\r\n    <div class=\"row\">\r\n        <div class=\"col-12\">\r\n            <div class=\"content-wrapper\" >\r\n\r\n                            <div class=\"box\">\r\n                                            <div class=\"nummber\"> \r\n                            \r\n                        <\/div>\r\n                        \r\n                                            <h2 class=\"headline\">Recrystallisation annealing of steel\r\n<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><div class=\"page\" title=\"Page 3\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p class=\" translation-block\">Recrystallisation annealing is performed after cold-forming, especially during the <strong>cold drawing and cold rolling of wires and sheets<\/strong>. The annealing at recrystallisation temperatures between 550 \u00b0C and 700 \u00b0C relieves stresses in the steel and repairs the crystalline structure. A \u03b1-ferrite-austenite phase transformation does not take place.<\/p>\n<p class=\" translation-block\">The objective of recrystallisation annealing is to achieve a <strong>fine-grain microstructure<\/strong> . This requires the microstructure to contain crystals to be as elongated as possible. This is the case only from a deformation degree of approx. 20%. If merely the critical deformation degree of 5% to 15% is reached, it is advisable to use <a href=\"https:\/\/haertha.de\/verfahren\/normalgluehen\/\" target=\"_self\">normal annealing<\/a>, because the low nucleus count during recrystallisation annealing would produce a coarse grain.<\/p>\n<p class=\" translation-block\">The <strong>recrystallisation temperature<\/strong> and duration depend on the degree of deformation and the melting temperature of the material. For thin parts, 10 minutes at 700 \u00b0C may be enough, while thicker parts usually require one hour at 600 \u00b0C to 650 \u00b0C.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/p>\r\n                    <div class=\"acf-innerblocks-container\"><\/div>\r\n                    \r\n                    <style>\r\n                        .sonder-zeichen{\r\n                            display: flex;\r\n                            flex-direction: row;\r\n                            gap: 15px;\r\n                        }\r\n                        .zeichen{\r\n                            color: #C9C9C9;\r\n                            position: relative;\r\n                            line-height: 66px;\r\n                            font-size: clamp(2.75rem, 1.9766rem + 2.1484vw, 4.125rem);\r\n                        }\r\n                    <\/style>\r\n                    \r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>\r\n\r\n\r\n\r\n\r\n\n\n\r\n<div id=\"verfahren-text-block_877117e957c8ec2e2763f99762f4dd10\" class=\"verfahren-text toc\" data-toctitle=\"Verfahrensstandorte\" style=\"\">\r\n    <div class=\"row\">\r\n        <div class=\"col-12\">\r\n            <div class=\"content-wrapper\" >\r\n\r\n                            <div class=\"box\">\r\n                                            <div class=\"nummber\"> \r\n                            \r\n                        <\/div>\r\n                        \r\n                                            <h2 class=\"headline\">Process locations<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><div class=\"page\" title=\"Page 3\">\n<div class=\"layoutArea\">\n<div class=\"column\">\n<p class=\" translation-block\">H\u00e4rtha provides intermediate annealing at various locations. To learn more, refer to our interactive <a href=\"https:\/\/haertha.de\/standorte\/\" target=\"_self\">location overview<\/a>.<\/p>\n<\/div>\n<\/div>\n<\/div>\n<\/p>\r\n                    <div class=\"acf-innerblocks-container\"><\/div>\r\n                    \r\n                    <style>\r\n                        .sonder-zeichen{\r\n                            display: flex;\r\n                            flex-direction: row;\r\n                            gap: 15px;\r\n                        }\r\n                        .zeichen{\r\n                            color: #C9C9C9;\r\n                            position: relative;\r\n                            line-height: 66px;\r\n                            font-size: clamp(2.75rem, 1.9766rem + 2.1484vw, 4.125rem);\r\n                        }\r\n                    <\/style>\r\n                    \r\n                <\/div>\r\n            <\/div>\r\n        <\/div>\r\n    <\/div>\r\n<\/div>","protected":false},"excerpt":{"rendered":"","protected":false},"author":9,"featured_media":5948,"menu_order":404,"template":"","verfahrenstechnik":[9],"class_list":["post-379","verfahren","type-verfahren","status-publish","has-post-thumbnail","hentry","verfahrenstechnik-gluehen"],"acf":{"text_cta":"Zwischengl\u00fchen beschreibt einen <b>Zwischenschritt in der Stahlverarbeitung.<\/b> Dabei wird das Werkst\u00fcck erhitzt, um Spannungen im Gef\u00fcge abzubauen. Gleichzeitig nimmt die H\u00e4rte ab und die Dehnbarkeit zu. Dadurch erh\u00f6ht sich die Verformungsf\u00e4higkeit, so dass mehrstufige Umwandlungsprozesse ohne Rissbildung m\u00f6glich werden. Da bei Stahl in der Regel eine <b>Ver\u00e4nderung der Kristallstruktur<\/b> stattfindet, spricht man auch vom Rekristallisationsgl\u00fchen.\r\n\r\nBei H\u00e4rtha sind Sie richtig, wenn Sie sich auf ein Zwischengl\u00fchen mit Qualit\u00e4tsversprechen verlassen wollen. Egal ob Einzelteil oder Serienproduktion, dank umfangreicher Kapazit\u00e4ten k\u00f6nnen wir Ihnen auch kurzfristig attraktive L\u00f6sungen anbieten.\r\n","contact_location":[12,254,49,244,248,252,256,250,9859,11495],"materials":"on","tablepress":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Zwischengl\u00fchen | H\u00c4RTHA GROUP<\/title>\n<meta name=\"description\" content=\"Warum Zwischengl\u00fchen? \u2713 Anwendungsbereiche \u2713 Vorteile \u2713 Rekristallisationsgl\u00fchen von Stahl \u2713 Jetzt beraten lassen!\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/haertha.de\/en\/process\/intermediate-annealing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Zwischengl\u00fchen | H\u00c4RTHA GROUP\" \/>\n<meta property=\"og:description\" content=\"Warum Zwischengl\u00fchen? 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