Additive Manufacturing What are the exact differences between Selective laser sintering (SLS) and Direct metal laser sintering (DMLS) in powder bed fu

Direct Metal Laser Sintering (Dmls)

Additive Manufacturing: What are the exact differences between Selective laser sintering (SLS) and Direct metal laser sintering (DMLS) in powder bed fusion process?

The feedback you provide will help us show you more relevant content in the future.

, Sufficient knowledge of lasers. Have lots of them too.

Selective Laser Sintering (SLS) is an additive manufacturing (AM) technique that uses a laser as the power source to sinter powdered material (typically metal), aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure. It is similar to direct metal laser sintering (DMLS); the two are instantiations of the same concept but differ in technical details. Selective laser melting (SLM) uses a comparable concept, but in SLM the material is fully melted rather than sintered,[1] allowing different properties (crystal structure, porosity, and so on). SLS (as well as the other mentioned AM techniques) is a relatively new technology that so far has mainly been used for rapid prototyping and for low-volume production of component parts. Production roles are expanding as the commercialization of AM technology improves.

Direct metal laser sintering (DMLS) is an additive manufacturing technique that uses a Yb (Ytterbium) fibre laser fired into a bed of powdered metal, aiming the laser automatically at points in space defined by a 3D model, melting or rather, welding the material together to create a solid structure. DMLS was developed by the EOS firm of Munich, Germany.[citation needed]

The DMLS process involves use of a 3D CAD model whereby a .stl file is created and sent to the machines software. A technician works with this 3D model to properly orient the geometry for part building and adds supports structure as appropriate. Once this build file has been completed, it is sliced into the layer thickness the machine will build in and downloaded to the DMLS machine allowing the build to begin. The DMLS machine uses a high-powered 200 watt Yb-fiber optic laser. Inside the build chamber area, there is a material dispensing platform and a build platform along with a recoater blade used to move new powder over the build platform. The technology fuses metal powder into a solid part by melting it locally using the focused laser beam. Parts are built up additively layer by layer, typically using layers 20 micrometers thick. This process allows for highly complex geometries to be created directly from the 3D CAD data, fully automatically, in a relatively short time and without any tooling. DMLS is a net-shape process, producing parts with high accuracy and detail resolution, good surface quality and excellent mechanical properties.

What are the materials used for selective laser sintering process?

What are the types of challenges faced in the selective laser sintering process?

What do you think of a dedicated website sharing practical tips/info about the steps involved in industrial additive manufacturing of high end…

What are some industrial applications for direct metal laser sintering?

Why is sinter used in a blast furnace?

Why is spark plasma sintering named as such?

What materials are used in selective laser sintering?

Can az31b parts produced using selective laser sintering or direct metal laser sintering?

What is the effect of dopant in sintering?

What laser is used in laser-guided bombs?

What are the challenges in selective laser sintering process?

What are the common constraints of direct metal laser sintering?

Still have a question? Ask your own!

What are the materials used for selective laser sintering process?

What are the types of challenges faced in the selective laser sintering process?

What do you think of a dedicated website sharing practical tips/info about the steps involved in industrial additive manufacturing of high end…

What are some industrial applications for direct metal laser sintering?

Why is sinter used in a blast furnace?

Why is spark plasma sintering named as such?

What materials are used in selective laser sintering?

Can az31b parts produced using selective laser sintering or direct metal laser sintering?