The company noted that the reduction in domestic U.S. This demonstration shows that aluminum and metal additive manufacturing of large structures - typically produced using forgings - can now be 3D-printed on demand. The uses of 6061 aluminum is also notable, because despite its widespread utilization in a number of industries, it is not compatible with other metal additive technologies. The large aluminum components produced by MELD Manufacturing have solid walls, some over 4 inches (102 mm) thick - showcasing the advantages open-air, semi-solid 3D-printing. In addition, the technology in MELD is not limited in the kinds of aluminum and metal alloys that can be deposited. It is an open-atmosphere process and is not sensitive to the operating environment or material surface condition, making it an ideal candidate for real-world manufacturing. Unlike traditional additive processes, the MELD process is not restricted to small powder beds or costly vacuum systems. Implementation for additive manufacturing is particularly beneficial, as it can print large metal parts - providing a leap in scalability. The technology is suitable to a number of applications, including additive manufacturing, coating applications, component repair, metal joining, and custom metal alloy and metal matrix composite billet and part fabrication. It also produces materials that are less susceptible to porosity, hot-cracking, or other common problems that plague melt-based technologies. In this way, it is said to produce high-quality materials and parts with low residual stresses and full density with significantly lower energy requirements than more conventional fusion-based processes. The MELD technology is a solid-state process, in which the material does not reach the melting temperature. Using its proprietary additive manufacturing technology, MELD Manufacturing Corporation has fabricated components in excess of 55 inches (1.4 m) in diameter using off-the-shelf aluminum 6061 - a milestone in the 3D-printing of large metal parts.
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