{"id":15563,"date":"2025-07-17T02:41:46","date_gmt":"2025-07-17T02:41:46","guid":{"rendered":"https:\/\/www.epicmicron.com\/?p=15563"},"modified":"2025-07-17T02:43:21","modified_gmt":"2025-07-17T02:43:21","slug":"the-impact-of-powder-properties-on-metal-3d-printing-performance","status":"publish","type":"post","link":"https:\/\/www.epicmicron.com\/de\/the-impact-of-powder-properties-on-metal-3d-printing-performance\/","title":{"rendered":"Der Einfluss der Pulvereigenschaften auf die Leistung beim 3D-Metalldruck"},"content":{"rendered":"<p>Die additive Fertigung mittels Powder Bed Fusion (PBF) ist die am schnellsten wachsende und am weitesten verbreitete Technologie f\u00fcr den 3D-Metalldruck. Sie bietet Vorteile wie hohe Formgenauigkeit, gute mechanische Eigenschaften, komplexe Komponenten und hohe Umformeffizienz. Zu den \u00fcblicherweise im Powder Bed Fusion Verfahren verwendeten Metallpulvern f\u00fcr den 3D-Druck geh\u00f6ren Titanlegierungen, Nickellegierungen, Eisenlegierungen, Kobalt-Chrom-Legierungen, Aluminiumlegierungen, Kupferlegierungen und Refrakt\u00e4rmetalle wie Wolfram, Molybd\u00e4n, Tantal und Niob. <\/p>\n\n\n\n<p>Die Qualit\u00e4t von Metallpulvern als Rohstoff bestimmt ma\u00dfgeblich die Qualit\u00e4t des Endprodukts. Sauberkeit, Morphologie und Partikelgr\u00f6\u00dfenverteilung des Pulvers sind Schl\u00fcsselfaktoren, die die Umformbarkeit von Teilen beeinflussen.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img fetchpriority=\"high\" decoding=\"async\" width=\"878\" height=\"684\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-Printing.webp\" alt=\"\" class=\"wp-image-15564\" style=\"width:808px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-Printing.webp 878w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-Printing-300x234.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-Printing-768x598.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-Printing-15x12.webp 15w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-Printing-600x467.webp 600w\" sizes=\"(max-width: 878px) 100vw, 878px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pulverreinheit<\/h2>\n\n\n\n<p>Die chemische Zusammensetzung von Metallpulvern f\u00fcr den 3D-Druck besteht aus Metallelementen und Verunreinigungen. G\u00e4ngige Metallelemente sind Fe, Ti, Ni, Al, Cu, Co, Cr sowie Edelmetalle wie Ag und Au. Verunreinigungen bestehen haupts\u00e4chlich aus Metallverbindungen oder nichtmetallischen Komponenten wie Si, Mn, C, S, P, O und anderen in reduziertem Eisen vorhandenen Verbindungen. Mechanische Einschl\u00fcsse wie SiO\u2082, Al\u2082O\u2083, Silikate, unl\u00f6sliche Metallcarbide und andere s\u00e4ureunl\u00f6sliche Substanzen k\u00f6nnen w\u00e4hrend des Rohmaterial- und Pulverherstellungsprozesses entstehen. Sauerstoff, Wasserdampf und andere Gase k\u00f6nnen ebenfalls an der Pulveroberfl\u00e4che adsorbiert werden.<\/p>\n\n\n\n<p>Wenn der Laser- oder Elektronenstrahl das Pulver abtastet, k\u00f6nnen Verunreinigungen mit dem Grundmetall reagieren, dessen Eigenschaften ver\u00e4ndern und die Qualit\u00e4t der 3D-gedruckten Teile beeintr\u00e4chtigen. Dar\u00fcber hinaus verursachen Einschl\u00fcsse ein ungleichm\u00e4\u00dfiges Schmelzen des Pulvers, was zu inneren Defekten im fertigen Teil f\u00fchrt. Insbesondere mechanische Einschl\u00fcsse verringern die Z\u00e4higkeit der Teile, insbesondere ihre Schlagz\u00e4higkeit, erheblich. Auch die Verteilung und Form nichtmetallischer Einschl\u00fcsse haben unterschiedliche Auswirkungen auf die geformten Teile. <\/p>\n\n\n\n<p>Bei hohem Sauerstoffgehalt bildet die Oxidation des Grundmetalls bei hohen Temperaturen einen dichten Oxidfilm, der die Leistung beeintr\u00e4chtigt und zur Sph\u00e4roidisierung f\u00fchren kann, wodurch sowohl die Dichte als auch die Formqualit\u00e4t der Teile verringert werden. Elemente wie Kohlenstoff, Phosphor, Schwefel, Sauerstoff und Stickstoff im Stahl wirken sich besonders negativ auf die Z\u00e4higkeit aus. Daher sollten der Gehalt an Verunreinigungen und Einschl\u00fcssen im Pulver streng kontrolliert werden, um die Anforderungen des additiven Fertigungsprozesses und die Leistung der fertigen Teile zu erf\u00fcllen.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"1024\" height=\"683\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Metal-3D-printing.webp\" alt=\"\" class=\"wp-image-15571\" style=\"width:784px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Metal-3D-printing.webp 1024w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Metal-3D-printing-300x200.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Metal-3D-printing-768x512.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Metal-3D-printing-18x12.webp 18w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Metal-3D-printing-600x400.webp 600w\" sizes=\"(max-width: 1024px) 100vw, 1024px\" \/><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Pulvermorphologie<\/h2>\n\n\n\n<p>Der <a href=\"https:\/\/en.wikipedia.org\/wiki\/Morphology\">Morphologie<\/a> des Pulvers wirkt sich direkt auf seine Sch\u00fcttdichte und Flie\u00dff\u00e4higkeit aus, was wiederum Auswirkungen auf den Pulverzufuhrprozess und die endg\u00fcltige Leistung des Teils hat.<\/p>\n\n\n\n<p>Bei der additiven Fertigung mittels Pulverbettfusion sorgt der Pulververteilungsmechanismus f\u00fcr eine gleichm\u00e4\u00dfige Verteilung der Pulverpartikel im Formgebungsbereich. Eine gute Flie\u00dff\u00e4higkeit ist f\u00fcr ein gleichm\u00e4\u00dfiges und flaches Pulverbett unerl\u00e4sslich. Sph\u00e4rische und nahezu sph\u00e4rische Pulver zeichnen sich durch gute Flie\u00dff\u00e4higkeit, hohe Sch\u00fcttdichte und eine gleichm\u00e4\u00dfige Struktur aus und sind daher die bevorzugten Rohstoffe f\u00fcr die additive Fertigung mittels Pulverbettfusion. <\/p>\n\n\n\n<p>Wenn jedoch Hohl- oder Satellitenpulver in sph\u00e4rischen oder nahezu sph\u00e4rischen Pulvern vorhanden sind, wird die endg\u00fcltige Leistung des Teils beeintr\u00e4chtigt. Hohlpulver kommt h\u00e4ufiger bei Pulvern mit Partikelgr\u00f6\u00dfen \u00fcber 70 \u00b5m vor und f\u00fchrt zu Defekten wie Poren, die im geformten Teil nur schwer zu beseitigen sind. Satellitenpulver verringert die Flie\u00dff\u00e4higkeit und behindert die gleichm\u00e4\u00dfige Pulveransammlung. Dieser Prozess findet w\u00e4hrend der Ausbreitung kontinuierlicher Pulverschichten statt und f\u00fchrt zu Teiledefekten. Daher sollte der Anteil von Hohl- und Satellitenpulvern bei Metallpulvern f\u00fcr die additive Fertigung mittels Pulverbettfusion minimiert werden.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pulverpartikelgr\u00f6\u00dfenverteilung<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img decoding=\"async\" width=\"862\" height=\"500\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-printing-2.webp\" alt=\"\" class=\"wp-image-15566\" style=\"width:798px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-printing-2.webp 862w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-printing-2-300x174.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-printing-2-768x445.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-printing-2-18x10.webp 18w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/3D-printing-2-600x348.webp 600w\" sizes=\"(max-width: 862px) 100vw, 862px\" \/><\/figure>\n\n\n\n<p>Die Pulverpartikelgr\u00f6\u00dfenverteilung charakterisiert die Zusammensetzung und Variation von Partikeln unterschiedlicher Gr\u00f6\u00dfe im Pulversystem. Sie ist ein wichtiger Parameter zur Beschreibung der Pulverpartikeleigenschaften. Die Partikelgr\u00f6\u00dfe wirkt sich direkt auf die Pulverauftragsqualit\u00e4t, die Formgeschwindigkeit, die Genauigkeit und die organisatorische Einheitlichkeit w\u00e4hrend des additiven Fertigungsprozesses aus. Unterschiedliche Verfahren erfordern unterschiedliche Pulverpartikelgr\u00f6\u00dfen. Beim Laser-Selektiven Schmelzen (SLM) werden Pulver mit Partikelgr\u00f6\u00dfen von 15 bis 45 \u00b5m verwendet, beim Elektronenstrahl-Selektiven Schmelzen (SEBM) hingegen Pulver mit Partikelgr\u00f6\u00dfen von 45 bis 106 \u00b5m.<\/p>\n\n\n\n<p>Aus thermodynamischer und kinetischer Sicht haben kleinere Pulverpartikel eine gr\u00f6\u00dfere Oberfl\u00e4che, was die Sinterkraft erh\u00f6ht. Kleine Partikel unterst\u00fctzen die Teilebildung. Zu feine Pulver verringern jedoch die Flie\u00dff\u00e4higkeit, verringern die Dichte, verringern die elektrische Leitf\u00e4higkeit und f\u00fchren beim Drucken zur Sph\u00e4roidisierung. Grobe Pulver verringern die Sinteraktivit\u00e4t, beeintr\u00e4chtigen die gleichm\u00e4\u00dfige Pulververteilung und verringern die Formgenauigkeit. Daher ist ein ausgewogenes Verh\u00e4ltnis von groben und feinen Pulvern unerl\u00e4sslich, um die Sch\u00fcttdichte und Flie\u00dff\u00e4higkeit zu verbessern und so die additive Fertigung mittels Pulverbettfusion zu f\u00f6rdern.<\/p>\n\n\n\n<p>Untersuchungen legen nahe, dass eine breitere Partikelgr\u00f6\u00dfenverteilung die Pulverbettdichte beim Streuen verbessert. Kleinere Partikel f\u00fcllen L\u00fccken zwischen gr\u00f6\u00dferen Partikeln und erh\u00f6hen so die Dichte.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Pulverkoh\u00e4sion<\/h2>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"640\" height=\"420\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Alumina-Powder.webp\" alt=\"\" class=\"wp-image-15567\" style=\"width:786px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Alumina-Powder.webp 640w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Alumina-Powder-300x197.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Alumina-Powder-18x12.webp 18w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Alumina-Powder-600x394.webp 600w\" sizes=\"(max-width: 640px) 100vw, 640px\" \/><\/figure>\n\n\n\n<p>Beim Laser-Pulverbettschmelzen werden Metallpulverschichten durch einen Laser verteilt und geschmolzen. Die Koh\u00e4sion des Pulvers beeinflusst die Gleichm\u00e4\u00dfigkeit der Verteilung und die Formqualit\u00e4t. Sie ist neben Partikelgr\u00f6\u00dfe und -morphologie ein Schl\u00fcsselfaktor. In der Pharma- und Lebensmittelindustrie ist der Einfluss der Pulverkoh\u00e4sion auf die Fluidit\u00e4t gut untersucht. Die Koh\u00e4sion wird durch Faktoren wie mechanische Belastung, Partikelwechselwirkungskr\u00e4fte und Kapillarkr\u00e4fte durch adsorbierte Feuchtigkeit beeinflusst. Diese Faktoren beeinflussen die Fluidit\u00e4t, die wiederum die Verteilung beeinflusst.<\/p>\n\n\n\n<p>Ver\u00e4nderungen der Partikelgr\u00f6\u00dfe, Morphologie und Oberfl\u00e4cheneigenschaften beeinflussen die Ausbreitungs- und Formqualit\u00e4t. Eine angemessene Gr\u00f6\u00dfenverteilung, h\u00f6here Sph\u00e4rizit\u00e4t und reduzierte Koh\u00e4sion verbessern die Sch\u00fcttdichte und die Ausbreitungsqualit\u00e4t. Dies reduziert Poren und nicht verschmolzene Defekte und verbessert so die Dichte und Qualit\u00e4t des Endteils.<\/p>\n\n\n\n<h2 class=\"wp-block-heading\">Aktueller Stand der Metallpulverindustrie f\u00fcr die additive Fertigung<\/h2>\n\n\n\n<p>China hat in der Forschung und Entwicklung von Metallpulvern sowie der Industrialisierung des Pulverbettschmelzverfahrens erhebliche Fortschritte erzielt. Dennoch hinkt das Land anderen L\u00e4ndern hinterher. Schl\u00fcsseltechnologien und -ausr\u00fcstung werden haupts\u00e4chlich von L\u00e4ndern wie Deutschland, den USA und Gro\u00dfbritannien kontrolliert. Unternehmen wie Carpenter und GE (USA), LPW, Sandvik und GKN (Gro\u00dfbritannien) sowie H\u00f6gan\u00e4s (Schweden) besitzen \u00fcber 601.000 Tonnen Patente f\u00fcr Titanlegierungspulver f\u00fcr die additive Fertigung. Einige L\u00e4nder beschr\u00e4nken den Export von sph\u00e4rischen Metallpulvern, wie beispielsweise Titanlegierungen, was die Rohstoffkosten erh\u00f6ht und die Lieferzyklen verl\u00e4ngert. Dies behindert die Entwicklung der chinesischen Pulverbettschmelz- und Metalladditivfertigungsindustrie.<\/p>\n\n\n\n<p>Um diesem Problem zu begegnen, sollte China Metalllegierungssysteme (wie Titanlegierungen) mit eigenst\u00e4ndigem geistigem Eigentum entwickeln. Die L\u00f6sung zentraler Herausforderungen bei der Herstellung hochwertiger sph\u00e4rischer Pulver wird Kosten senken, die Produktion steigern und Branchen wie der Luft- und Raumfahrt sowie der Biomedizin zugutekommen.<\/p>\n\n\n\n<figure class=\"wp-block-image aligncenter size-full is-resized\"><img loading=\"lazy\" decoding=\"async\" width=\"967\" height=\"802\" src=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Jet-Mills.webp\" alt=\"Strahlm\u00fchlen\" class=\"wp-image-15460\" style=\"width:1109px;height:auto\" srcset=\"https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Jet-Mills.webp 967w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Jet-Mills-300x249.webp 300w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Jet-Mills-768x637.webp 768w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Jet-Mills-14x12.webp 14w, https:\/\/www.epicmicron.com\/wp-content\/uploads\/2025\/07\/Jet-Mills-600x498.webp 600w\" sizes=\"(max-width: 967px) 100vw, 967px\" \/><figcaption class=\"wp-element-caption\">Strahlm\u00fchlen<\/figcaption><\/figure>\n\n\n\n<h2 class=\"wp-block-heading\">Epische Pulvermaschinen<\/h2>\n\n\n\n<p><a href=\"https:\/\/www.epicmicron.com\/de\/products\/\">Epische Pulvermaschinen<\/a> is a leading provider of advanced powder processing equipment for additive manufacturing and other industries. With a focus on innovation and quality, we offer state-of-the-art solutions for optimizing powder properties, enhancing the performance of metal 3D printing processes, and meeting the specific needs of our clients. Whether you&#8217;re producing metal powders for additive manufacturing or refining powder characteristics for other applications, Epic Powder is committed to providing reliable, high-performance equipment that drives success in powder-based industries.<\/p>\n\n\n\n<figure class=\"wp-block-embed is-type-video is-provider-youtube wp-block-embed-youtube wp-embed-aspect-16-9 wp-has-aspect-ratio\"><div class=\"wp-block-embed__wrapper\">\n<iframe title=\"Hersteller von Hochleistungs-Luftstrahlm\u00fchlen, Ultrafein-Luftstrahlm\u00fchlenprojekt \u2013 EPIC Powder\" width=\"500\" height=\"281\" src=\"https:\/\/www.youtube.com\/embed\/ZamYRrqtWLI?feature=oembed\" frameborder=\"0\" allow=\"accelerometer; autoplay; clipboard-write; encrypted-media; gyroscope; picture-in-picture; web-share\" referrerpolicy=\"strict-origin-when-cross-origin\" allowfullscreen><\/iframe>\n<\/div><\/figure>\n\n\n\n<div class=\"wp-block-contact-form-7-contact-form-selector\">\n<div class=\"wpcf7 no-js\" 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