In laser powder bed fusion (LPBF), applying multiple materials separately within the same build seems as though it should be impossible. The “bed” of the powder bed machine is an undifferentiated mass of powder, offering no capacity to segregate separate materials.
Schaeffler Aerosint offers a system that brings this segregation to LPBF machines. It works by delivering different materials each to individual drums above the powder bed, with these drums using negative pressure to precisely lay material onto an in-process build.
Penn State University’s Center for Innovative Materials Processing through Direct Digital Deposition (CIMP-3D) is experimenting with applications of this system for building parts from two or more materials within a single LPBF cycle. Here is a look at the operation and some of the uses of this multi-material powder bed system.
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Schaeffler Aerosint: [ Ссылка ]
CIMP-3D: [ Ссылка ]
Another LPBF resource at CIMP-3D, really big powder bed machines: [ Ссылка ]
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