English
Views: 0 Author: Site Editor Publish Time: 2026-01-10 Origin: Site
In SLS (Selective Laser Sintering), blue diode lasers (around 435-460nm) are used as powerful, focused light sources to selectively melt and fuse fine polymer powder (like nylon) into solid 3D objects, layer by layer, by tracing cross-sections, with the laser's wavelength optimized for absorption by dark powders, allowing for strong, functional parts without supports.
The entire build chamber and powder bed are heated to just below the melting point of the polymer powder.
Powder Spreading: A thin layer of polymer powder is spread evenly across the build platform by a recoater.
A high-power blue laser beam, directed by mirrors, traces the cross-section of the part for that layer.
The laser energy melts the powder particles where it hits, causing them to sinter (fuse) together into a solid layer.
The platform lowers, new powder is added, and the process repeats until the object is complete, with the surrounding powder providing support.
Blue diode lasers (around 445nm) are used with specific, often darker, polymer powders (like certain nylons) that effectively absorb this wavelength, maximizing energy transfer for sintering.
Blue laser systems can offer more affordable entry points into SLS technology, making it accessible for more users.
They allow for high accuracy and detail, producing functional, strong parts with good mechanical properties.
BU-LASER offers professional OEM/ODM services for lasers spanning 375nm–980nm. We provide 425nm–460nm blue diode lasers (1W–80W) — ideal for SLS 3D printing applications. For more details, contact Song Song at song@bu-laser.com.
