{"id":12616,"date":"2025-02-12T08:08:52","date_gmt":"2025-02-12T07:08:52","guid":{"rendered":"https:\/\/haertha.de\/?post_type=verfahren&#038;p=12616"},"modified":"2025-10-20T07:30:36","modified_gmt":"2025-10-20T05:30:36","slug":"vacuum-brazing","status":"publish","type":"verfahren","link":"https:\/\/haertha.de\/en\/process\/vacuum-brazing\/","title":{"rendered":"Vacuum brazing"},"content":{"rendered":"<div id=\"verfahren-header-image-block_2a4656c4cf596e9ece23a0c1d6b462fc\" 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\/2025\/02\/vakuum-loeten.png\" alt=\"\" \/>\r\n            <\/div>\r\n\r\n    \r\n<\/div>\r\n\r\n\n\n\r\n<div id=\"verfahren-text-block_57aef80bec26d84b702f4efe13d30e98\" class=\"verfahren-text toc\" data-toctitle=\"Das Verfahren und seine Hintergr\u00fcnde\" 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 and background information\r\n<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>Vacuum brazing is a special hard brazing process based on capillary action. For this, a suitable brazing material is melted and applied as a coating on the parts to be joined. The subsequent cooling creates a firmly bonded joint. The vacuum atmosphere prevents unwanted reactions with the environment, such as oxidation, and provides optimum brazing conditions.<\/p>\n<p>&nbsp;<\/p>\n<p>The process starts with a thorough cleaning of the components, in order to remove grease, oxides, and other impurities. Next, the brazing material is applied in the form of a foil, wire, paste, or a galvanic coating. The components are then precisely fixed in place in the vacuum furnace in order to ensure exact positioning.<\/p>\n<p>&nbsp;<\/p>\n<p>Once the target temperature has been reached, the brazing material is kept molten for a defined dwell time, ensuring the complete coating of the join surfaces. The controlled cooling keeps the material from warping and ensures a uniform microstructure. To ensure the highest quality standards, the process concludes with a check of the workpieces for strength, tightness, and dimensional accuracy.<\/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_8206e48b8e0901b3369858783a65641a\" class=\"verfahren-text toc\" data-toctitle=\"Vorteile des Vakuum-L\u00f6tens\" 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\">Advantages of vacuum brazing\r\n<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>The process offers numerous advantages, including high-strength and reproducible joints with flawless, corrosion-resistant surfaces. Since it does not require fluxes, the process does not produce any residues, thus eliminating the need for costly rework. Another benefit is the option to combine brazing and hardening in a single process step - thus providing an efficient solution that saves time and money.<\/p>\n<p>&nbsp;<\/p>\n<h3><strong>The key advantages at a glance:<\/strong><\/h3>\n<p>&nbsp;<\/p>\n<ul>\n<li>High strength and corrosion resistance of the joint<\/li>\n<li>Clean surfaces free of oxides, as no flux residues are produced<\/li>\n<li>Combination of different materials, e. g. metal\/ceramic combinations<\/li>\n<li>Even heat distribution thanks to the vacuum, minimising dimensional deviations<\/li>\n<li>Reduced need for rework, as the process does not create any oxidation layers<\/li>\n<li>Ideal for high-precision applications in the fields of aerospace and medical engineering<\/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_de88dd71a285991c524b6118cbde16b5\" class=\"verfahren-text toc\" data-toctitle=\"Anwendungsgebiete und 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\">Applications and suitable materials\r\n<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>Its versatility has made vacuum brazing an established solution in numerous branches of industry. It very suitable for high alloy steels, super alloys, stainless steel, copper, titanium, and aluminium, as well as for demanding materials such as ceramics, carbides, CBN, and diamond. This compatibility across a wide range of materials makes the process particularly attractive for machine and tool making, where it is used, for instance, for joining carbide and steel.<\/p>\n<p>&nbsp;<\/p>\n<p>The process also plays an essential role in aerospace, as it allows the production of extremely strong and temperature-resistant structural components. Its applications in the automotive industry include the production of hydraulic and cooling systems. Medical engineering benefits from the hygienic, gap-free joints that vacuum brazing makes possible, while it is used in vacuum and measurement technology for the production of high-precision components. Another important area of application is the manufacture of heat exchangers and heating elements, which require optimum heat transfer.<\/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_0901da9276aed104e34dc6a17051178e\" class=\"verfahren-text toc\" data-toctitle=\"Prozessoptimierung und Spezialverfahren\" 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 optimisation and special processes\r\n<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p>To achieve even better results, vacuum brazing can be further optimised with the help of a variety of special processes. One common method is vacuum hardening with subsequent tempering, which substantially increases the mechanical strength of the components. Similarly, surface hardening by nitriding contributes to boosting wear resistance, thus improving the durability of the components.<\/p>\n<p>&nbsp;<\/p>\n<p>Another key aspect is stress-free annealing, which reduces internal stresses in the material and thus minimises the risk of warping or cracks. Moreover, the targeted use of capillary action can help achieve an even more precise coating of the joining surfaces, and this optimises the quality of the solder joint even further. These specialised processes make it possible to systematically adapt vacuum brazing to specific requirements and thus to ensure even higher performance and reliability.<\/p>\n<p>&nbsp;<\/p>\n<p><strong>Would you like to learn more about vacuum brazing? Contact our team of experts!<\/strong><\/p>\n<p>&nbsp;<\/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_108e8b1d66204f51a302da1c580b9abe\" 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\r\n<\/h2>\r\n                                \r\n                <\/div>\r\n            \r\n                <div class=\"content-box texteditor\" style=\"\">                    \r\n                    <p><p class=\" translation-block\">Our locations in Germany and Europe are shown <strong><a href=\"https:\/\/haertha.de\/en\/standorte\/\" target=\"_self\">here<\/a><\/strong>.<\/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":12618,"menu_order":204,"template":"","verfahrenstechnik":[7],"class_list":["post-12616","verfahren","type-verfahren","status-publish","has-post-thumbnail","hentry","verfahrenstechnik-haerten-anlassen"],"acf":{"text_cta":"Vakuum-L\u00f6ten ist ein hochwertiges F\u00fcgeverfahren, das unter Vakuumbedingungen bei Temperaturen zwischen 800\u00b0C und 1150\u00b0C durchgef\u00fchrt wird. Es erm\u00f6glicht extrem feste, metallisch blanke und korrosionsbest\u00e4ndige Verbindungen \u2013 ganz ohne den Einsatz von Flussmitteln. Dank dieser Technik lassen sich verschiedenste Materialien wie Stahl, Edelstahl, Kupfer und sogar Keramik zuverl\u00e4ssig miteinander verbinden. \r\n\r\nSie w\u00fcnschen eine individuelle Beratung zum Thema Vakuum-L\u00f6ten? Wir freuen uns auf Ihre Anfrage!","contact_location":[9859,12944],"materials":"off","tablepress":null},"yoast_head":"<!-- This site is optimized with the Yoast SEO plugin v26.0 - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>Vakuum-L\u00f6ten | H\u00c4RTHA GROUP<\/title>\n<meta name=\"description\" content=\"Was versteht man unter Vakumm-L\u00f6ten \u2713 Verfahren und seine Vorteile \u2713 Anwendung: Geeignete Werkstoffe \u2713 Jetzt ansehen!\" \/>\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\/vacuum-brazing\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"Vakuum-L\u00f6ten | H\u00c4RTHA GROUP\" \/>\n<meta property=\"og:description\" content=\"Was versteht man unter Vakumm-L\u00f6ten \u2713 Verfahren und seine Vorteile \u2713 Anwendung: 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