| SLAC National Accelerator Laboratory is studying how to avoid metal 3D printing Defects in parts. The X-ray observation process produces more reliable 3D printing parts.  Whether your 3D printer is at home, at a factory, on board, or in space, you always want your 3D printing to be as flawless as possible for aesthetic purposes, or to ensure that its features are at a premium, Sometimes it can be difficult to identify the cause of a defect: yes 3D printed material Or the 3D printer itself? Maybe this flaw came from the CAD 3D model used to build the part? Scientists at SLAC's National Accelerator Laboratory are also curious about why 3D printed parts (especially metal 3D printed parts) are prone to flaws, so they use a X-ray observation table to better understand why 3D printing went wrong. We think this research can benefit a variety of manufacturers of 3D printed products such as aerospace, automotive and healthcare. The study is being conducted on the laboratory's Stanford Synchrotron Light Source (SSRL) and is assisted by scientists from the US Department of Energy's Lawrence Livermore National Laboratory and Ames Laboratory, who together used two X-ray methods To see what's happening in the metal 3D printing process - an incredibly useful technique that has not yet been refined. Johanna Nelson Weker, Staffing and Project Leader, SLAC, said: "With 3D printing technology , You can make parts with complex geometries that can not be cast like normal metal parts, which can theoretically be a quick turnaround: simply designing, sending, printing from a remote location, but we have not yet We still need to figure out all the parameters involved in making solid parts. Readers may be very aware of the various defects that may occur with FDM 3D printers, but metal 3D printers have a number of problems with their own, such as melting of the laser beam during a selective laser melting (SLM) process that is not uniform when the metal is cooled and hardened There are pits or weak spots in the land, and at the same time building layers, but why does it happen and how can we avoid it? During these studies, SLAC scientists are trying to drill down to the bottom of this additive manufacturing problem and analyze the type of metal used, the level of heat in the laser, the rate of metal heating and cooling, and other factors that can cause defects in 3D printed components . Chris Tassone, a scientist at SSRL Materials Science, commented: 'The basic physics research we provide will help us determine what aspects of metal 3D printing are important.' Scientists agree that using x-rays instead of thermal imaging devices can reveal the secret of pit formation, they are using two different X-ray technologies, one for capturing micrometer-resolution images, what happens when metal layers accumulate, and the other One is to analyze the atomic structure of atoms in the material by atomic reflection of X-rays and then cool down. Researchers Nelson Weker and Tassone, Kevin Stone, Anthony Fong, Andrew Kiss and Vivek Thampy have not yet got any definitive answer, but they believe the new X-ray setup will help understand the causes of pits and weakness in metal 3D printing. The study will also be used to observe other types of metal 3D printing, including directional energy deposition. As the research progressed, scientists also planned to introduce other observational tools into the process, including a high-speed camera that captures manufacturing process photos and videos, and they will be able to combine their images with their X-ray data match to get a more complete picture of what's happening with the metal 3D printing unit. Nelson Weker explains: 'We want manufacturers to be able to relate what they see on the camera to what we measure here, so that they can deduce what happens under the surface of the metal.' Source: 3D Tiger |
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