{"id":12896,"date":"2025-10-27T18:54:47","date_gmt":"2025-10-27T18:54:47","guid":{"rendered":"https:\/\/ipsenglobal.com\/?post_type=knowledge-center&#038;p=12896"},"modified":"2026-03-11T17:14:37","modified_gmt":"2026-03-11T17:14:37","slug":"ask-the-expert-vacuum-furnace-brazing-tips","status":"publish","type":"knowledge-center","link":"https:\/\/ipsenglobal.com\/de\/knowledge-center\/ask-the-expert-vacuum-furnace-brazing-tips\/","title":{"rendered":"Fragen Sie den Experten: Tipps zum L\u00f6ten von Vakuum\u00f6fen"},"content":{"rendered":"<h4 class=\"wp-block-heading\">Von Jim Grann, Technischer Direktor<\/h4>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h5 class=\"wp-block-heading\">F: Ist es bei der Bestimmung der f\u00fcr eine Anwendung zu verwendenden Lotmenge besser, die Menge leicht zu \u00fcbersch\u00e4tzen oder leicht zu untersch\u00e4tzen?<\/h5>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">A: Das kommt darauf an. Wenn Sie mit der Entwicklung Ihres Verfahrens beginnen, ist es eine gute Idee, leicht zu \u00fcbersch\u00e4tzen und Ihre Berechnungen nach unten zu korrigieren.<\/h5>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Die wichtigsten Punkte, die bei der Berechnung der L\u00f6tmittelmenge zu ber\u00fccksichtigen sind, sind:<\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li>Die Gr\u00f6\u00dfe des Spalts in der Fuge<\/li>\n\n\n\n<li>Die Art der Legierung und ihre Schmelztemperatur im Vergleich zu dem Material, mit dem sie sich verbindet<\/li>\n\n\n\n<li>ob das Verfahren vollst\u00e4ndig im Niedrigvakuum oder in einer Kombination aus Niedrigvakuum und Partialdruck durchgef\u00fchrt wird<\/li>\n<\/ul>\n\n\n\n<p>Solange diese Variablen ber\u00fccksichtigt werden, die Berechnungen korrekt durchgef\u00fchrt werden und das Endprodukt einer Qualit\u00e4tspr\u00fcfung unterzogen wird, ist die <a href=\"https:\/\/ipsenglobal.com\/de\/vacuum-furnaces\/\" type=\"page\" id=\"3431\" target=\"_blank\" rel=\"noreferrer noopener\">Vakuumofen<\/a> wurde entwickelt, um Betreibern zu helfen, vorhersehbare und wiederholbare L\u00f6tverbindungen herzustellen, indem sie die Temperaturen und die Prozessgase in der Kammer kontrollieren und gleichzeitig eine au\u00dfergew\u00f6hnliche Temperaturgleichm\u00e4\u00dfigkeit in der Kammer aufrechterhalten. Diese Wiederholbarkeit erm\u00f6glicht es Ihnen, die Menge des L\u00f6tmaterials weiter zu reduzieren und zu testen, bis Sie die kleinstm\u00f6gliche Materialmenge gefunden haben, um wiederholbare, zuverl\u00e4ssige Teile herzustellen.<\/p>\n\n\n\n<p>Das bedeutet, dass weniger oft besser ist. Die Kapillarwirkung ist ein sehr effizienter Prozess, um das L\u00f6tmaterial in die N\u00e4hte zu ziehen. Beim Hartl\u00f6ten soll nur so viel verwendet werden, wie f\u00fcr die Aufgabe erforderlich ist, und nicht mehr. Das liegt nicht nur an den Kosten des Abfallmaterials, sondern auch daran, dass weniger L\u00f6tmaterial weniger Dampfdruckprobleme bedeutet, die der Ofen bew\u00e4ltigen muss. Au\u00dferdem werden durch die Verwendung des minimal erforderlichen Hartlots der Abfluss und die Reinigung der Heizelemente in der hei\u00dfen Zone reduziert. Dies erh\u00f6ht die Langlebigkeit der hei\u00dfen Zone und reduziert die Wartungskosten.<\/p>\n\n\n\n<p>Hartl\u00f6ten kann ein schmutziger Prozess sein, bei dem Reste von \u00fcbersch\u00fcssigem Hartlot zur\u00fcckbleiben, die h\u00e4ufig ausgebrannt werden m\u00fcssen. Betreiber, die die geringstm\u00f6gliche Menge an L\u00f6tmaterial verwenden, k\u00f6nnen die Zeiten zwischen den erforderlichen Ausbrennvorg\u00e4ngen verl\u00e4ngern, um die Anzahl der Legierungsreste in der hei\u00dfen Zone zu verringern.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<figure class=\"wp-block-image size-large\"><img data-dominant-color=\"424347\" data-has-transparency=\"false\" style=\"--dominant-color: #424347;\" loading=\"lazy\" decoding=\"async\" width=\"1024\" height=\"576\" src=\"https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-1024x576.avif\" alt=\"Ipsen vacuum aluminum brazing furnace (VAB)\" class=\"wp-image-12901 not-transparent\" srcset=\"https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-1024x576.avif 1024w, https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-300x169.avif 300w, https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-768x432.avif 768w, https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-1536x864.avif 1536w, https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-2048x1152.avif 2048w, https:\/\/ipsenglobal.com\/wp-content\/uploads\/2025\/10\/DSC00220-18x10.avif 18w\" sizes=\"auto, (max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h3 class=\"wp-block-heading\">Wussten Sie das?<\/h3>\n\n\n\n<p class=\"has-white-color has-blue-background-color has-text-color has-background has-link-color wp-elements-e9226b432b7135a157e3e0cd3c76e4f8\">Wenn Sie einen neuen Ofen, eine neue Heizzone oder einen neuen Herd in Betrieb nehmen, m\u00fcssen Sie unbedingt darauf achten, dass der Herd in jeder Achse eben ist.<br><br>Das Hartl\u00f6ten reagiert besonders empfindlich auf Herde und Vorrichtungen, die nicht in einer Ebene liegen. Die Schwerkraft kann die Dicke einer L\u00f6tverbindung beeinflussen, wenn eine Seite des Teils h\u00f6her liegt als die andere.<br><br>Wenn Sie auf einer Seite Ihres Ofens ein Auslaufen feststellen oder wenn Sie ein ungleichm\u00e4\u00dfiges L\u00f6ten auf einer Seite Ihres Teils oder Ihrer Charge im Vergleich zur anderen Seite bemerken, sollten Sie \u00fcberpr\u00fcfen, ob Ihre Charge eben ist. Passen Sie Ihre Herdplatte oder Ihren Ofen nach Bedarf an und testen Sie Ihre n\u00e4chste Charge, um zu sehen, ob Sie das Problem gel\u00f6st haben.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<h5 class=\"wp-block-heading\">F: Beim L\u00f6ten habe ich festgestellt, dass sich einige meiner Teile auf der Halterung verschieben. Ich hatte Teile, bei denen es zu Knicken, Ausdehnungen und unerwarteten Spannungen an den Verbindungen kam. Was kann ich tun, um dies in Zukunft zu verhindern?<\/h5>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<h5 class=\"wp-block-heading\">A: M\u00f6glicherweise zieht Ihr Ofen zu schnell ins Vakuum ab.<\/h5>\n\n\n\n<div style=\"height:30px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n<p>Vakuum\u00f6fen k\u00f6nnen die Atmosph\u00e4re innerhalb der hei\u00dfen Zone sehr schnell absenken. Die Teile in der Kammer k\u00f6nnen einen raschen Druckunterschied erfahren, wobei der Luftstrom mit dem Wind eines Hurrikans der Kategorie 3 vergleichbar ist.<\/p>\n\n\n\n<p>Es gibt zwar kein \u201czu tiefes\u201d Vakuum, aber die Geschwindigkeit, mit der sich das Vakuum im Ofen bildet, kann f\u00fcr manche Teile zu schnell sein.<\/p>\n\n\n\n<p>Teile mit eingeschlossenen Hohlr\u00e4umen, Teile mit komplexer Geometrie oder kleine Teile mit geringer Masse k\u00f6nnen so schnell atmosph\u00e4rischen Ver\u00e4nderungen ausgesetzt sein, dass sie sich verschieben, ausdehnen oder verformen, wenn die anf\u00e4ngliche Vakuumevakuierung zu schnell abl\u00e4uft. Dies sind die Kr\u00e4fte, die unerwartete Probleme mit dem Ausdehnungskoeffizienten verursachen k\u00f6nnen.<\/p>\n\n\n\n<p>Ipsen kann diese Probleme l\u00f6sen, indem wir die Geschwindigkeit, mit der sich das Vakuum in Ihrem Ofen bildet, mit einem Bypass f\u00fcr langsame Pumpen begrenzen und anpassen. Wenn Sie diese Probleme haben, kontaktieren Sie uns, um \u00fcber die Installation eines Bypasses zu sprechen. Rufen Sie uns an unter 1-844-GO-IPSEN oder senden Sie eine E-Mail an <a href=\"mailto:retrofits@ipsenusa.com\">retrofits@ipsenusa.com<\/a>.<\/p>\n\n\n\n<hr class=\"wp-block-separator has-alpha-channel-opacity\"\/>\n\n\n\n<p>Weitere hilfreiche Tipps finden Sie in unserem&nbsp;<a href=\"https:\/\/ipsenglobal.com\/de\/category\/ask-the-expert\/\" target=\"_blank\" rel=\"noreferrer noopener\">Frag den Experten Seite<\/a>.<\/p>\n\n\n\n<h5 class=\"wp-block-heading\">Haben Sie eine technische Frage zur W\u00e4rmebehandlung oder zum Betrieb und zur Wartung von Vakuum\u00f6fen?<\/h5>\n\n\n\n<div style=\"height:15px\" aria-hidden=\"true\" class=\"wp-block-spacer\"><\/div>\n\n\n\n    <section id=\"button-block_8aaa8b0c8f079784f66b24c66ff5ab61\"\n        class=\"button-custom-block d-block d-lg-inline-block mx-auto me-lg-5 mb-4\">\n        <a class=\"btn btn-outline-secondary\" href=\"https:\/\/ipsenglobal.com\/de\/connect-with-an-expert\/\" target=\"_blank\">\n            Verbindung mit einem Ipsen-Experten        <\/a>\n    <\/section>","protected":false},"excerpt":{"rendered":"<p>Von Jim Grann, Technischer Direktor F: Ist es bei der Bestimmung der f\u00fcr eine Anwendung zu verwendenden L\u00f6tmaterialmenge besser, die Menge etwas zu \u00fcbersch\u00e4tzen oder etwas zu untersch\u00e4tzen? A: Es<\/p>","protected":false},"author":7,"featured_media":0,"menu_order":0,"template":"","meta":{"_acf_changed":false,"_tec_requires_first_save":true,"_searchwp_excluded":"","_kad_blocks_custom_css":"","_kad_blocks_head_custom_js":"","_kad_blocks_body_custom_js":"","_kad_blocks_footer_custom_js":"","_price":"","_stock":"","_tribe_ticket_header":"","_tribe_default_ticket_provider":"","_tribe_ticket_capacity":"0","_ticket_start_date":"","_ticket_end_date":"","_tribe_ticket_show_description":"","_tribe_ticket_show_not_going":false,"_tribe_ticket_use_global_stock":"","_tribe_ticket_global_stock_level":"","_global_stock_mode":"","_global_stock_cap":"","_tribe_rsvp_for_event":"","_tribe_ticket_going_count":"","_tribe_ticket_not_going_count":"","_tribe_tickets_list":"[]","_tribe_ticket_has_attendee_info_fields":false,"_EventAllDay":false,"_EventTimezone":"","_EventStartDate":"","_EventEndDate":"","_EventStartDateUTC":"","_EventEndDateUTC":"","_EventShowMap":false,"_EventShowMapLink":false,"_EventURL":"","_EventCost":"","_EventCostDescription":"","_EventCurrencySymbol":"","_EventCurrencyCode":"","_EventCurrencyPosition":"","_EventDateTimeSeparator":"","_EventTimeRangeSeparator":"","_EventOrganizerID":[],"_EventVenueID":[],"_OrganizerEmail":"","_OrganizerPhone":"","_OrganizerWebsite":"","_VenueAddress":"","_VenueCity":"","_VenueCountry":"","_VenueProvince":"","_VenueState":"","_VenueZip":"","_VenuePhone":"","_VenueURL":"","_VenueStateProvince":"","_VenueLat":"","_VenueLng":"","_VenueShowMap":false,"_VenueShowMapLink":false,"_tribe_blocks_recurrence_rules":"","_tribe_blocks_recurrence_description":"","_tribe_blocks_recurrence_exclusions":"","_ecp_custom_2":"","footnotes":""},"categories":[112,624],"tags":[],"class_list":["post-12896","knowledge-center","type-knowledge-center","status-publish","hentry","category-ask-the-expert","category-brazing"],"acf":[],"yoast_head":"<!-- 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