{"id":1844,"date":"2024-11-27T17:13:53","date_gmt":"2024-11-27T09:13:53","guid":{"rendered":"https:\/\/www.3dptek.com\/?p=1844"},"modified":"2024-11-27T17:29:23","modified_gmt":"2024-11-27T09:29:23","slug":"liao-jie-sls-la-mo-3d-da-yin-ji-de-guan-jian-ji-shu-can-shu","status":"publish","type":"post","link":"https:\/\/www.3dptek.com\/en\/blogs\/liao-jie-sls-la-mo-3d-da-yin-ji-de-guan-jian-ji-shu-can-shu\/","title":{"rendered":"Understanding the key technical parameters of SLS wax mold 3D printers"},"content":{"rendered":"<p>If you're thinking about buying a wax 3D printer, it's important to understand these key technical parameters. This article focuses on SLS wax 3D printers, analyzing the key technical parameters of laser power and wavelength, layer thickness and accuracy, and temperature control of the build platform, and describing how they affect the printing results, wax quality, and suitability for different application scenarios, so that you can accurately assess the performance of the printer according to your own needs and make a more informed purchasing decision. Click here to learn more about our<a href=\"https:\/\/www.3dptek.com\/en\/industrial-3d-printers\/\" style=\"color:blue\" target=\"_blank\" rel=\"noreferrer noopener\">Industrial 3D printers<\/a>The<\/p>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u6fc0\u5149\u529f\u7387\u53ca\u6ce2\u957f\u7684\u5f71\u54cd\">Effect of laser power and wavelength<\/h2>\n\n\n\n<p><strong>laser power<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Sintering capacity correlation<\/strong>Laser power is a key parameter for SLS wax 3D printers and directly determines the effectiveness and efficiency of the wax sintering process. Higher laser power allows the wax particles to melt and bond together faster, making it possible to quickly build larger or thicker structures. For example, in the manufacture of wax molds for large industrial parts, sufficient laser power ensures that the wax powder is fully sintered in a short period of time, increasing the printing speed. However, if the laser power is too high, this may lead to overburning of the surface of the wax mold, e.g. scorching, deformation, etc., which affects the quality and subsequent use of the wax mold. On the other hand, too low a laser power may not allow the wax powder to melt completely, resulting in a weak sintering and a loose structure of the wax mold, or even damage during subsequent handling or processing.<\/li>\n\n\n\n<li><strong>Adaptation to different materials<\/strong>: Different types of wax materials have different requirements for laser power due to their different physical properties such as melting point and thermal conductivity. For wax powder with high melting point and relatively hard texture, higher laser power is often needed to realize good sintering; while wax powder with lower melting point and easier melting can use relatively low laser power. Therefore, the selection of wax powder materials needs to be considered in conjunction with the laser power range of the printer in order to achieve the best sintering results.<\/li>\n<\/ul>\n\n\n\n<p><strong>laser wavelength<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Material Absorption Properties<\/strong>: The wavelength of the laser also plays an important role in the printing process by influencing the degree of absorption of the laser energy by the wax material. Different wax materials have different absorption efficiencies at specific wavelengths. For example, some wax materials may absorb laser energy better at wavelengths in the near infrared (NIR) region, and under the irradiation of the laser at this wavelength, the laser energy can be efficiently converted into thermal energy, resulting in a good sintering. If the laser wavelength does not match the absorption characteristics of the wax powder material, even if the laser power is sufficient, it is difficult for the wax powder to fully absorb the energy for melting and sintering, which can lead to printing failure or poor quality of the printed wax model.<\/li>\n\n\n\n<li><strong>Application Scenario Differences<\/strong>: In practical application, according to different use scenarios and requirements on wax mold performance, sometimes it is also necessary to choose a suitable wavelength of laser. For example, in the printing of jewelry wax molds, which requires high precision and high surface quality, a specific wavelength of laser may be selected, which can make the wax powder sintered finely and uniformly, and reduce the surface defects due to uneven energy absorption; while in some industrial wax molds manufacturing scenarios, which require lower precision and pay more attention to productivity, the laser may be selected according to the common wavelengths of the wax powder material, which are generally suitable for the wax powder to achieve fast and stable printing. realize fast and stable printing.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u6253\u5370\u5c42\u539a\u4e0e\u7cbe\u5ea6\u5206\u6790\">Print Layer Thickness and Accuracy Analysis<\/h2>\n\n\n\n<p><strong>print layer thickness<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Impact on model refinement<\/strong>: The print layer thickness is the thickness of the wax mold layer that is formed when each layer of wax powder is sintered during the SLS printing process. Smaller layer thicknesses result in finer details and smoother surfaces. For example, when printing wax models of artistic sculptures with fine textures or intricate jewelry wax models, a layer thickness of a few tens of microns can clearly reproduce details such as tiny grain lines and thin-walled structures in the design model. On the contrary, a larger layer thickness can speed up the printing speed, but it will lead to obvious stepped textures on the surface of the wax model, reducing the fineness of the model, which is not suitable for some products with high demands on appearance and precision.<\/li>\n\n\n\n<li><strong>Trade-offs with print speed<\/strong>: There is often a trade-off between accuracy and speed when choosing a layer thickness for printing. Thinner layer thicknesses mean that more layers are needed to build the entire wax mold and print times increase significantly, while thicker layer thicknesses reduce the number of layers and speed up the process, but at the expense of some accuracy. In actual production, the layer thickness should be determined according to the specific product requirements and the urgency of the production task. For example, for mass-produced industrial molds that do not require particularly high precision, the layer thickness can be increased to improve production efficiency; while for customized, high-value fine wax molds, a smaller layer thickness is preferred to ensure quality.<\/li>\n<\/ul>\n\n\n\n<p><strong>Precision Analysis<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Dimensional accuracy<\/strong>Dimensional accuracy is a function of how well the printed wax model matches the design model in terms of size, and is affected by a number of factors including the accuracy of the laser scanning system, the positioning accuracy of the mechanical moving parts, and the shrinkage of the wax powder material during the sintering process. High precision printers are able to control the dimensional error within a very small range, which is crucial for wax molds that need to be precisely matched with other parts, such as wax molds for precision casting and wax molds for dental restorations, or else the cast metal parts may not be able to be mounted properly or the medical restorations may not be effective.<\/li>\n\n\n\n<li><strong>Shape Accuracy<\/strong>Shape accuracy is related to the ability of the wax model to accurately reproduce the complex shapes and geometrical structures of the design model. Since SLS constructs wax molds by layer-by-layer sintering, it is easy to have accuracy problems in some parts with special shapes such as overhanging parts, thin walls, inner corners, etc. For example, the overhanging parts may need to be supported, and if the support design is not reasonable or not handled correctly after removing the support, the shape accuracy of the part may be affected. In addition, the planning of the laser scanning path and the uniformity of the wax powder will also affect the shape accuracy. Ensuring a good shape accuracy will ensure that the wax model meets the expected function and appearance requirements in the subsequent applications.<\/li>\n<\/ul>\n\n\n\n<h2 class=\"wp-block-heading\" id=\"h-\u6784\u5efa\u5e73\u53f0\u7684\u6e29\u5ea6\u63a7\u5236\">Temperature control for building platforms<\/h2>\n\n\n\n<p><strong>Initial temperature setting<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Wax powder spreading uniformity<\/strong>The initial temperature of the construction platform has an important influence on the uniformity of the spreading of the wax powder on the platform. A suitable initial temperature enables the wax powder to spread better during the laying process and avoids localized piles or vacancies. For example, when the platform temperature is slightly higher than the fluidity temperature of the wax powder at room temperature, the wax powder can be evenly spread on the platform like fine sand, providing a good starting condition for subsequent laser sintering. If the platform temperature is too low, the wax powder may not be able to spread out smoothly, resulting in uneven thickness of each layer of wax powder, which in turn affects the quality of the whole wax mold; whereas too high a platform temperature may cause the wax powder to be partially melted and sticking before it is spread out, which likewise destroys the molding effect of the wax mold.<\/li>\n\n\n\n<li><strong>Quality of the first sintered layer<\/strong>: The initial temperature also affects the sintering quality of the first wax mold layer. A suitable platform temperature helps the wax powder to bond better with the platform under laser irradiation and improves the firmness of the first layer, so that it can provide a stable foundation for the construction of subsequent layers. Different wax materials have different optimal initial platform temperatures, which need to be set accurately according to the properties of the wax powder used to ensure a good sintering of the first layer and to prevent separation of the first layer from the platform or incomplete sintering.<\/li>\n<\/ul>\n\n\n\n<p><strong>temperature stability<\/strong><\/p>\n\n\n\n<ul class=\"wp-block-list\">\n<li><strong>Printing Process Impact<\/strong>: The temperature stability of the build platform is crucial during the whole wax mold printing process. Large fluctuations in temperature can lead to changes in the physical properties of the wax powder (e.g. fluidity, sintering characteristics, etc.), which in turn affects the bonding effect between the layers of the wax mold and the structural stability of the overall wax mold. For example, a sudden increase in temperature may cause excessive melting of the wax powder being sintered, destroying the structure of the existing wax mold; a decrease in temperature may cause insufficient sintering of the subsequent wax powder, resulting in quality problems such as delamination and cracking. Therefore, printers are usually equipped with a high precision temperature control system that monitors and regulates the platform temperature in real time to keep it within a set stable range, ensuring high quality sintering from the first to the last layer of the wax mold.<\/li>\n\n\n\n<li><strong>Requirements for different wax mold types<\/strong>The requirements for temperature stability of the platform vary for different types and sizes of wax molds. For large, thick-walled wax molds, due to the longer printing time, the cumulative effect of temperature changes is greater, and stricter temperature control is needed to ensure uniform sintering of the internal and external wax structure; while small, thin-walled wax molds, although the printing time is relatively shorter, due to the fragility of their structure, they are more sensitive to temperature fluctuations, and they also need a stable platform temperature environment to ensure the quality of wax molds to avoid deformation, damage, etc. caused by temperature changes. The temperature environment should be stabilized to ensure the quality and to avoid the deformation and damage of the wax molds due to temperature change.<\/li>\n<\/ul>\n\n\n\n<p>In summary, the key technical parameters of laser power and wavelength, print layer thickness and accuracy, and temperature control of the build platform interact with each other to determine the print performance and mold quality of SLS wax 3D printers, and require in-depth understanding and consideration when using and evaluating these printers.<\/p>","protected":false},"excerpt":{"rendered":"<p>Thinking of buying a wax 3D printer but don't know what to choose? It's important to have a deep understanding of the key technical parameters of SLS mold 3D printers! Click here for more information and start your professional shopping journey.<\/p>","protected":false},"author":1,"featured_media":1845,"comment_status":"closed","ping_status":"open","sticky":false,"template":"","format":"standard","meta":{"footnotes":""},"categories":[17],"tags":[54],"class_list":["post-1844","post","type-post","status-publish","format-standard","has-post-thumbnail","hentry","category-blogs","tag-gou-mai-la-mo-3d-da-yin-ji"],"acf":[],"yoast_head":"<!-- This site is optimized with the Yoast SEO Premium plugin v21.9 (Yoast SEO v22.3) - https:\/\/yoast.com\/wordpress\/plugins\/seo\/ -->\n<title>\u4e86\u89e3SLS\u8721\u6a213D\u6253\u5370\u673a\u7684\u5173\u952e\u6280\u672f\u53c2\u6570 - \u4e09\u5e1d\u79d1\u6280\u80a1\u4efd\u6709\u9650\u516c\u53f8<\/title>\n<meta name=\"description\" content=\"\u60f3\u8d2d\u4e70\u8721\u6a21 3D \u6253\u5370\u673a\u5374\u4e0d\u77e5\u5982\u4f55\u6289\u62e9\uff1f\u6df1\u5165\u4e86\u89e3 SLS \u8721\u6a21 3D \u6253\u5370\u673a\u5173\u952e\u6280\u672f\u53c2\u6570\u5f88\u5173\u952e\uff01\u70b9\u51fb\u67e5\u770b\u8be6\u60c5\uff0c\u5f00\u542f\u4e13\u4e1a\u9009\u8d2d\u4e4b\u65c5\u3002\" \/>\n<meta name=\"robots\" content=\"index, follow, max-snippet:-1, max-image-preview:large, max-video-preview:-1\" \/>\n<link rel=\"canonical\" href=\"https:\/\/www.3dptek.com\/en\/blogs\/liao-jie-sls-la-mo-3d-da-yin-ji-de-guan-jian-ji-shu-can-shu\/\" \/>\n<meta property=\"og:locale\" content=\"en_US\" \/>\n<meta property=\"og:type\" content=\"article\" \/>\n<meta property=\"og:title\" content=\"\u4e86\u89e3SLS\u8721\u6a213D\u6253\u5370\u673a\u7684\u5173\u952e\u6280\u672f\u53c2\u6570\" \/>\n<meta property=\"og:description\" content=\"\u60f3\u8d2d\u4e70\u8721\u6a21 3D \u6253\u5370\u673a\u5374\u4e0d\u77e5\u5982\u4f55\u6289\u62e9\uff1f\u6df1\u5165\u4e86\u89e3 SLS \u8721\u6a21 3D \u6253\u5370\u673a\u5173\u952e\u6280\u672f\u53c2\u6570\u5f88\u5173\u952e\uff01\u70b9\u51fb\u67e5\u770b\u8be6\u60c5\uff0c\u5f00\u542f\u4e13\u4e1a\u9009\u8d2d\u4e4b\u65c5\u3002\" \/>\n<meta property=\"og:url\" content=\"https:\/\/www.3dptek.com\/en\/blogs\/liao-jie-sls-la-mo-3d-da-yin-ji-de-guan-jian-ji-shu-can-shu\/\" \/>\n<meta property=\"og:site_name\" content=\"\u4e09\u5e1d\u79d1\u6280\u80a1\u4efd\u6709\u9650\u516c\u53f8\" \/>\n<meta property=\"article:published_time\" content=\"2024-11-27T09:13:53+00:00\" \/>\n<meta property=\"article:modified_time\" content=\"2024-11-27T09:29:23+00:00\" \/>\n<meta property=\"og:image\" content=\"https:\/\/www.3dptek.com\/wp-content\/uploads\/2024\/11\/3D-printed-wax-molds.jpg\" \/>\n\t<meta property=\"og:image:width\" content=\"800\" \/>\n\t<meta property=\"og:image:height\" content=\"800\" \/>\n\t<meta property=\"og:image:type\" content=\"image\/jpeg\" \/>\n<meta name=\"author\" content=\"3dptek\" \/>\n<meta name=\"twitter:card\" content=\"summary_large_image\" \/>\n<meta name=\"twitter:label1\" content=\"Written by\" \/>\n\t<meta name=\"twitter:data1\" content=\"3dptek\" \/>\n\t<meta name=\"twitter:label2\" content=\"Est. reading time\" \/>\n\t<meta name=\"twitter:data2\" content=\"1 minute\" \/>\n<script type=\"application\/ld+json\" class=\"yoast-schema-graph\">{\"@context\":\"https:\/\/schema.org\",\"@graph\":[{\"@type\":\"WebPage\",\"@id\":\"https:\/\/www.3dptek.com\/blogs\/liao-jie-sls-la-mo-3d-da-yin-ji-de-guan-jian-ji-shu-can-shu\/\",\"url\":\"https:\/\/www.3dptek.com\/blogs\/liao-jie-sls-la-mo-3d-da-yin-ji-de-guan-jian-ji-shu-can-shu\/\",\"name\":\"\u4e86\u89e3SLS\u8721\u6a213D\u6253\u5370\u673a\u7684\u5173\u952e\u6280\u672f\u53c2\u6570 - 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