{"id":2125,"date":"2023-03-07T10:34:42","date_gmt":"2023-03-07T09:34:42","guid":{"rendered":"http:\/\/haertha.dev.neuekommunikation.de\/wordpress\/?post_type=verfahren&#038;p=2125"},"modified":"2025-10-16T06:45:37","modified_gmt":"2025-10-16T04:45:37","slug":"burnishing","status":"publish","type":"verfahren","link":"https:\/\/haertha.de\/en\/process\/burnishing\/","title":{"rendered":"Burnishing"},"content":{"rendered":"<div id=\"verfahren-header-image-block_61e187f87d823317b907c43c703ef0d3\" class=\"verfahren-header-image\" >   \r\n\r\n    <div class=\"image-wrapper\">\r\n                    <img decoding=\"async\" class=\"img-fluid\" src=\"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg\" alt=\"\" \/>\r\n            <\/div>\r\n\r\n    \r\n<\/div>\r\n\r\n\n\n\r\n<div id=\"verfahren-text-block_51ca70d3c999cfc2922ba0c0dae9c962\" class=\"verfahren-text toc\" data-toctitle=\"Das Verfahren\" 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<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p class=\" translation-block\">\u00a0<br>\nThe DIN 50983 standard defines <strong>burnishing as a manufacturing process that converts the metal surface<\/strong>, i.e. no coating. For this purpose, the component is immersed in an alkaline or acidic solution, and then heated.\u00a0<br>\n\u00a0<br>\nA chemical reaction between the burnishing agent and the material leads to the formation of a so-called patina \u2013 a <strong>black layer of mixed oxide<\/strong> on the surface of the component. This layer is only about 1 \u03bcm thick and has no impact on dimensional stability.\u00a0<br>\n\u00a0<br>\nThe burnishing of metals requires both a pre-treatment and a post-treatment. <strong>The following process has become established:<\/strong><br><\/p>\n<p>&nbsp;<\/p>\n<h3><span style=\"color: #6ab651;\"> Pre-treatment<\/span><\/h3>\n<p class=\" translation-block\"><br>\nIn order to successfully burnish steel, the workpiece must first be <strong>freed from residues and impurities<\/strong>, and then cleaned thoroughly. The following steps are necessary to accomplish this: Degreasing, rinsing, pickling, and rinsing again<br>\n<br><\/p>\n<h3><span style=\"color: #6ab651;\">Burnishing<\/span><\/h3>\n<p class=\" translation-block\"><br>\n<strong>Burnishing salt is stirred into cold water<\/strong> to prepare the burnishing bath. When combined with a heat supply, exothermic processes cause the <strong>temperature to rise to the boiling point<\/strong>.<br>\n<br>\nNext is the actual process of burnishing. The component is now <strong>immersed in the burnishing salt solution<\/strong> with the help of barrels, racks, or sieves <strong>until the surface turns deep black<\/strong>. Throughout the entire process, the burnishing bath is kept at the boiling temperature. This process may take between five and thirty minutes. Its duration depends on the geometry of the component, its type of material, and its intended use.<br>\n<br><\/p>\n<h3><span style=\"color: #6ab651;\">Post-treatment<\/span><\/h3>\n<p class=\" translation-block\">In order to remove any salt residue left on the metal after burnishing, the workpiece is <strong>rinsed again<\/strong>, usually with hot water and ultrasound. After that, <strong>corrosion protection is applied to the surface.<\/strong><br>\n\u00a0<br>\n<span class=\"block\" style=\"color: #ffffff;background-color: #6ab651;padding: 3rem\"><span style=\"font-weight: 400\">INFO: Durability and protective effectiveness of burnishing<br>\n<strong>Preservative oils or greases<\/strong> are used to protect the burnished layer against corrosion. These agents\nallow it to withstand mechanical stresses such as bending and pressing, and make it resistant to heat up to 300 \u00b0C. Even stresses from the alkaline milieu, i.e. conventional lubricants, varnishes, and solvents, will not affect the treated layer.\nBurnished workpieces are therefore <strong>well suited for use indoors<\/strong>. Acids, on the other hand, dissolve the burnished layer. For this reason, treated components intended for outdoors require additional protection.\n<\/span><\/span><\/p>\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_d0a7cc26eb331d77935ef9a3b8eaf97d\" class=\"verfahren-text toc\" data-toctitle=\"Vorteile auf einen Blick\" 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 advantages at a glance<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>&nbsp;<\/p>\n<p class=\" translation-block\">Burnishing as a surface treatment offers a number of advantages for a workpiece:<\/p>\n<p>&nbsp;<\/p>\n<ul>\n<li class=\" translation-block\">The characteristic blackening produced during burnishing makes the steel look antique, and is considered a <strong>visual enhancement<\/strong>.<\/li>\n<li class=\" translation-block\">Burnishing <strong>protects against corrosion<\/strong>, especially from oils and greases<\/li>\n<li class=\" translation-block\">The burnished layer is highly <strong>resistant to abrasion and bending<\/strong> and offers temperature resistance up to 300 \u00b0C<\/li>\n<li class=\" translation-block\">Hardly any impairment of dimensional stability, and thus  <strong>no warping <\/strong><\/li>\n<li>No impairment of conductivity<\/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_9ce743114f97011775f84beb16d2e7be\" 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\">Burnishing is used in mechanical and plant engineering <strong>to increase the service life of components<\/strong>. The process is therefore of major importance, especially for roller bearings, and also for springs, clamping jaws, screws, fittings and controls as well as for components used in handguns. In addition, parts are burnished <strong>for aesthetic reasons<\/strong> to blacken them, and thus to give them an antique look.<\/p>\n<p>&nbsp;<\/p>\n<p class=\" translation-block\"><span class=\"block\" style=\"color: #ffffff;background-color: #6ab651;padding: 3rem\"><span style=\"font-weight: 400\">NFO: Blackening<br>\nBesides burnishing, there are other methods that fall under the category of blackening. Blackening is also used for the <strong>corrosion protection of forged products and iron cookware<\/strong>. For this purpose, linseed oil is burned off on the iron surface. The workpiece is heated to a temperature of 400\n\u00b0C to 700 \u00b0C in glowing coal and then quenched with linseed oil, or else coated with oil first and then heated. The oil is dissipated in the form of smoke. The process often requires several passes to produce the desired outcome. The process is also referred to as black annealing or dark marking.\n<\/span><\/p>\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_6caf24f91d5492417b2b2033b6dfb5a0\" class=\"verfahren-text toc\" data-toctitle=\"Geeignete Werkstoffe\" 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\">Suitable materials<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>&nbsp;<\/p>\n<p class=\" translation-block\"><strong>Oxidisable metals<\/strong> such as steel, copper, brass, and cast iron are suitable for burnishing. Non-ferrous metals and rust-resistant steel are not suitable for burnishing because they cannot form a layer of mixed oxide.<\/p>\n<p>&nbsp;<\/p>\n<p>An overview of some suitable materials can be found at the bottom of this page.<\/p>\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_bd2ba5c4e58b6555510d9459317b1202\" class=\"verfahren-text toc\" data-toctitle=\"Das Br\u00fcnieren im Vergleich zu anderen Verfahren\" 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\">Burnishing compared with other processes<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>&nbsp;<\/p>\n<p class=\" translation-block\">While chromating and phosphating involve the incorporation of their respective eponymous elements into the surface layer, <strong>only oxygen is incorporated during burnishing<\/strong>. This leads to the formation of the oxide layer, composed of mill scale or of iron (II) or iron (III) oxide.<\/p>\n<p>&nbsp;<\/p>\n<p class=\" translation-block\">DIN 8580 does not classify burnishing as a coating as per main group 5, but as a change in material properties as per main group 6.3. This means that <strong>particles are introduced into the surface<\/strong> instead of being applied to the surface. For this reason, the dimensions of the component remain almost unchanged.<\/p>\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_86a27ed1ff314549226756c7fb3a30ea\" class=\"verfahren-text toc\" data-toctitle=\"Besondere Kompetenz von H\u00e4rtha\" 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\">Special expertise at H\u00e4rtha<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>&nbsp;<\/p>\n<p class=\" translation-block\">The individual burnishing parameters have a decisive influence on the <strong>lasting quality of this surface treatment<\/strong>. A great amount of experience is necessary to strike the important balance between temperature, time, chemicals and concentration that will perfectly suit your workpieces. State-of-the-art systems ensure that the sensitive parameters are strictly complied with. We at H\u00e4rtha are therefore able to guarantee your desired product characteristics, even with a very narrow tolerance range.<\/p>\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_f5034248ab77ea1677eb0cc6f0f32fb2\" class=\"verfahren-text toc\" data-toctitle=\"Anlagengr\u00f6\u00dfe\" 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\">System size<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>&nbsp;<\/p>\n<p class=\" translation-block\">Maximum workpiece size:<br>\n2,700 x 400 x 600 mm<\/p>\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_61fdddd4f2eed291e498184b0ace2677\" 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><p>&nbsp;<\/p>\n<p class=\" translation-block\">Our interactive <a href=\"https:\/\/haertha.de\/en\/standorte\/\" target=\"_self\">location overview<\/a> tells you which of our locations in Germany and Europe offer burnishing.<\/p>\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_06fa06e8300de80fd8891bfece8cb22c\" class=\"verfahren-text toc\" data-toctitle=\"Wissenswertes zum Br\u00fcnieren\" 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\">Facts worth knowing about burnishing<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><ul>\n<li class=\" translation-block\">A higher colour depth can be achieved by <strong>multi-stage burnishing<\/strong> (DIN 50 938)<\/li>\n<li class=\" translation-block\">Only iron oxidises during burnishing \u2013 which is why <strong>the iron content determines the depth of the blackening<\/strong>. As a consequence, a higher concentration of other alloy components leads to lighter and possibly reddish colourations<\/li>\n<li class=\" translation-block\">When applied to stainless steels, burnishing is referred to as blackening or <strong>stainless steel blackening<\/strong><\/li>\n<li class=\" translation-block\">Due to the chemical nature of the process, <strong>internal areas and holes<\/strong> can be burnished without a problem<\/li>\n<li class=\" translation-block\">During what is known as <strong>rapid burnishing<\/strong>, the burnishing solution is applied manually to the workpiece.<\/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_32bd022c92e6cff09da0eaff29b21ffb\" class=\"verfahren-text toc\" data-toctitle=\"Kundenangaben zum Br\u00fcnieren\" 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\">Customer specifications for burnishing<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>&nbsp;<\/p>\n<p>We are delighted that you wish to commission burnishing from us. Please start by providing us with the material designation and information about any thermal pre-treatments.<\/p>\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":6734,"menu_order":503,"template":"","verfahrenstechnik":[10],"class_list":["post-2125","verfahren","type-verfahren","status-publish","has-post-thumbnail","hentry","verfahrenstechnik-beschichten"],"acf":{"text_cta":"Das Br\u00fcnieren ist eine Oberfl\u00e4chenbehandlung von Metall, bei der eine d\u00fcnne schwarze Schicht in eisenhaltige Oberfl\u00e4chen eingebracht wird, um diese vor Korrosion zu sch\u00fctzen. Br\u00fcnieren wird haupts\u00e4chlich bei Stahl angewendet, oft auch um eine antike Optik zu erzeugen.\r\n\r\n\r\nEgal ob Serienfertigung oder individuelles Einzelteil \u2013 bei H\u00e4rtha geben wir Ihnen unser Qualit\u00e4tsversprechen und erm\u00f6glichen auch bei kurzfristigen Auftr\u00e4gen schnelle\r\nDurchlaufzeiten.","contact_location":[12,49,250,254,12944],"materials":"on","tablepress":[{"tabellen_name_":"Br\u00fcnieren","tabelpress_shortcode":"[table id=47 \/]"}]},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Br\u00fcnieren | H\u00c4RTHA GROUP<\/title>\n<meta name=\"description\" content=\"Was ist Br\u00fcnieren? \u2713 Verfahrensablauf inkl. Vor- und Nachbehandlung \u2713 Vorteile und Anwendung \u2713 Geeignete Werkstoffe.\" \/>\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\/burnishing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Br\u00fcnieren | H\u00c4RTHA GROUP\" \/>\n<meta property=\"og:description\" content=\"Was ist Br\u00fcnieren? \u2713 Verfahrensablauf inkl. Vor- und Nachbehandlung \u2713 Vorteile und Anwendung \u2713 Geeignete Werkstoffe.\" \/>\n<meta property=\"og:url\" content=\"https:\/\/haertha.de\/en\/process\/burnishing\/\" \/>\n<meta property=\"og:site_name\" content=\"H\u00c4RTHA GROUP\" \/>\n<meta property=\"article:modified_time\" content=\"2025-10-16T04:45:37+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"3640\" \/>\n\t<meta property=\"og:image:height\" content=\"3640\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/\",\"url\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/\",\"name\":\"Br\u00fcnieren | H\u00c4RTHA GROUP\",\"isPartOf\":{\"@id\":\"https:\/\/haertha.de\/it\/#website\"},\"primaryImageOfPage\":{\"@id\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/#primaryimage\"},\"image\":{\"@id\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/#primaryimage\"},\"thumbnailUrl\":\"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg\",\"datePublished\":\"2023-03-07T09:34:42+00:00\",\"dateModified\":\"2025-10-16T04:45:37+00:00\",\"description\":\"Was ist Br\u00fcnieren? \u2713 Verfahrensablauf inkl. Vor- und Nachbehandlung \u2713 Vorteile und Anwendung \u2713 Geeignete Werkstoffe.\",\"breadcrumb\":{\"@id\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/#breadcrumb\"},\"inLanguage\":\"en-US\",\"potentialAction\":[{\"@type\":\"ReadAction\",\"target\":[\"https:\/\/haertha.de\/it\/processi\/brunitura\/\"]}]},{\"@type\":\"ImageObject\",\"inLanguage\":\"en-US\",\"@id\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/#primaryimage\",\"url\":\"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg\",\"contentUrl\":\"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg\",\"width\":3640,\"height\":3640},{\"@type\":\"BreadcrumbList\",\"@id\":\"https:\/\/haertha.de\/it\/processi\/brunitura\/#breadcrumb\",\"itemListElement\":[{\"@type\":\"ListItem\",\"position\":1,\"name\":\"Startseite\",\"item\":\"https:\/\/haertha.de\/it\/\"},{\"@type\":\"ListItem\",\"position\":2,\"name\":\"Verfahren\",\"item\":\"https:\/\/haertha.de\/it\/processi\/\"},{\"@type\":\"ListItem\",\"position\":3,\"name\":\"Br\u00fcnieren\"}]},{\"@type\":\"WebSite\",\"@id\":\"https:\/\/haertha.de\/it\/#website\",\"url\":\"https:\/\/haertha.de\/it\/\",\"name\":\"H\u00c4RTHA GROUP\",\"description\":\"Hardening Industries H\u00e4rterei H\u00c4RTHA GROUP.\",\"potentialAction\":[{\"@type\":\"SearchAction\",\"target\":{\"@type\":\"EntryPoint\",\"urlTemplate\":\"https:\/\/haertha.de\/it\/?s={search_term_string}\"},\"query-input\":{\"@type\":\"PropertyValueSpecification\",\"valueRequired\":true,\"valueName\":\"search_term_string\"}}],\"inLanguage\":\"en-US\"}]}<\/script>\n<!-- \/ Yoast SEO plugin. -->","yoast_head_json":{"title":"Burnishing | H\u00c4RTHA GROUP","description":"What is burnishing? \u2713 Process sequence incl. pre- and post-treatment \u2713 Advantages and application \u2713 Suitable materials.","robots":{"index":"index","follow":"follow","max-snippet":"max-snippet:-1","max-image-preview":"max-image-preview:large","max-video-preview":"max-video-preview:-1"},"canonical":"https:\/\/haertha.de\/en\/process\/burnishing\/","og_locale":"en_US","og_type":"article","og_title":"Br\u00fcnieren | H\u00c4RTHA GROUP","og_description":"Was ist Br\u00fcnieren? \u2713 Verfahrensablauf inkl. Vor- und Nachbehandlung \u2713 Vorteile und Anwendung \u2713 Geeignete Werkstoffe.","og_url":"https:\/\/haertha.de\/en\/process\/burnishing\/","og_site_name":"H\u00c4RTHA GROUP","article_modified_time":"2025-10-16T04:45:37+00:00","og_image":[{"width":3640,"height":3640,"url":"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg","type":"image\/jpeg"}],"twitter_card":"summary_large_image","schema":{"@context":"https:\/\/schema.org","@graph":[{"@type":"WebPage","@id":"https:\/\/haertha.de\/it\/processi\/brunitura\/","url":"https:\/\/haertha.de\/it\/processi\/brunitura\/","name":"Burnishing | H\u00c4RTHA GROUP","isPartOf":{"@id":"https:\/\/haertha.de\/it\/#website"},"primaryImageOfPage":{"@id":"https:\/\/haertha.de\/it\/processi\/brunitura\/#primaryimage"},"image":{"@id":"https:\/\/haertha.de\/it\/processi\/brunitura\/#primaryimage"},"thumbnailUrl":"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg","datePublished":"2023-03-07T09:34:42+00:00","dateModified":"2025-10-16T04:45:37+00:00","description":"What is burnishing? \u2713 Process sequence incl. pre- and post-treatment \u2713 Advantages and application \u2713 Suitable materials.","breadcrumb":{"@id":"https:\/\/haertha.de\/it\/processi\/brunitura\/#breadcrumb"},"inLanguage":"en-US","potentialAction":[{"@type":"ReadAction","target":["https:\/\/haertha.de\/it\/processi\/brunitura\/"]}]},{"@type":"ImageObject","inLanguage":"en-US","@id":"https:\/\/haertha.de\/it\/processi\/brunitura\/#primaryimage","url":"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg","contentUrl":"https:\/\/haertha.de\/wp-content\/uploads\/2023\/03\/Bruenieren_Phosphatieren_klein-1.jpg","width":3640,"height":3640},{"@type":"BreadcrumbList","@id":"https:\/\/haertha.de\/it\/processi\/brunitura\/#breadcrumb","itemListElement":[{"@type":"ListItem","position":1,"name":"Startseite","item":"https:\/\/haertha.de\/it\/"},{"@type":"ListItem","position":2,"name":"Verfahren","item":"https:\/\/haertha.de\/it\/processi\/"},{"@type":"ListItem","position":3,"name":"Br\u00fcnieren"}]},{"@type":"WebSite","@id":"https:\/\/haertha.de\/it\/#website","url":"https:\/\/haertha.de\/it\/","name":"H\u00c4RTHA GROUP","description":"Hardening Industries H\u00e4rterei H\u00c4RTHA GROUP.","potentialAction":[{"@type":"SearchAction","target":{"@type":"EntryPoint","urlTemplate":"https:\/\/haertha.de\/it\/?s={search_term_string}"},"query-input":{"@type":"PropertyValueSpecification","valueRequired":true,"valueName":"search_term_string"}}],"inLanguage":"en-US"}]}},"_links":{"self":[{"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/verfahren\/2125","targetHints":{"allow":["GET"]}}],"collection":[{"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/verfahren"}],"about":[{"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/types\/verfahren"}],"author":[{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/users\/9"}],"version-history":[{"count":86,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/verfahren\/2125\/revisions"}],"predecessor-version":[{"id":6736,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/verfahren\/2125\/revisions\/6736"}],"acf:post":[{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/standorte\/12944"},{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/standorte\/254"},{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/standorte\/250"},{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/standorte\/49"},{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/standorte\/12"}],"wp:featuredmedia":[{"embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/media\/6734"}],"wp:attachment":[{"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/media?parent=2125"}],"wp:term":[{"taxonomy":"verfahrenstechnik","embeddable":true,"href":"https:\/\/haertha.de\/en\/wp-json\/wp\/v2\/verfahrenstechnik?post=2125"}],"curies":[{"name":"wp","href":"https:\/\/api.w.org\/{rel}","templated":true}]}}