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How to use powder deposition process to realize cheap, extensible multilayer material 3D printing?
May 12, 2018

Aerosint, a 3D printing company, has published an article outlining its vision for the future of multi-material 3D printing.Belgian SLS experts have tried to develop 3D printers for a variety of materials, and further development of the technology could have a transformational effect on manufacturing.Multi-material 3D printing is important for the future of additive manufacturing technology and for companies developing this technology, since most products are often made from a variety of materials.Until the same system becomes easier to print different materials in 3D, the large-scale production of the technology will still be limited to the reverse engineering replacement of obsolete components.


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At present, it is difficult to realize multi-material 3D printing in scalability and economy.One of the most common ways to print a variety of materials in 3D is composites.Composites are actually two different materials that are combined in various ways.For example, this gives them a combination of properties of two materials, such as high heat resistance and mechanical strength.Metal alloys or fiber reinforced polymers are good examples of this composite.

Functionally gradient material (FGM) is the best type of composite material for Aerosint's "holy grail" of composite material world.Instead of the usually reinforced material distribution in the base material, FGM is composed of two or more than two kinds of materials, each material has a gradient between interface, from a smooth transition to another.This provides better mechanical, thermal and chemical stress distribution than the concentration of the obvious boundary between the two materials, which leads to weakness.

FGM is very useful in extremely high thermal stress, mechanical stress and/or chemical stress extreme environments where single material components will inevitably fail.In FGM, the mechanical, thermal or chemical advantages of each material effectively neutralize the disadvantages of another material.


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