What Is SLS (Selective Laser Sintering)?

Selective Laser Sintering (SLS) is one of the technologies used by today’s 3D printers. SLS it’s the process of turning digital designs into three-dimensional objects that produces accurate prototypes and functional production parts in as fast as 1 day.. SLS was developed at the University of Texas in Austin, by Carl Deckard and colleagues. The reason why Selective Laser Sintering was trusted by engineers and manufacturers across different industries for its ability to produce strong, functional parts. It mainly uses metal powder as material, and its principle is laser sintering powder material, so that the powder material can be combined to form.

How Does Selective Laser Sintering work?

The working process of SLS is similar to that of 3D Printing, uses the principle of stack forming, which is based on the powder bed. The difference is that 3D Printing uses the spray binder to bond the powder, while SLS uses the infrared laser to sinter the powder. First, lay a layer of powder material with powder roller, and heat it to a certain temperature just below the sintering point of the powder through the constant temperature facility in the printing equipment. Then, the laser beam irradiates the powder layer to make the temperature of the irradiated powder rise above the melting point for sintering and bonding with the formed part below. When a layer is sintered, the printing platform will drop to a height of layer thickness, and the powder laying system will lay new powder materials on the printing platform, and then control the laser beam to irradiate again for sintering, so as to cycle and stack layer by layer until the printing of the whole three-dimensional object is completed.