What is the difference between selective laser sintering and direct metal laser sintering?

“Selective Laser Sintering and Direct Metal Laser Sintering are essentially the same thing, with SLS used to refer to the process as applied to a variety of materials—plastics, glass, ceramics—whereas DMLS refers to the process as applied to metal alloys. …

What do understand by the term selective laser sintering SLS process with reference to additive manufacturing?

Selective laser sintering (SLS) is an additive manufacturing (AM) technique that uses a laser as the power source to sinter powdered material (typically nylon or polyamide), aiming the laser automatically at points in space defined by a 3D model, binding the material together to create a solid structure.

What are the four types of powder bed fusion processes?

The Powder Bed Fusion process includes the following commonly used printing techniques: Direct metal laser sintering (DMLS), Electron beam melting (EBM), Selective heat sintering (SHS), Selective laser melting (SLM) and Selective laser sintering (SLS).

What is difference between SLS and 3D printing?

SLS stands for selective laser sintering, and is a more typical method of 3D printing in an industrial environment. Print material for SLS printers comes in powdered form, and within the machine is a roller device that continuously deposits new layers of “raw” material on top of partially sintered ones.

What does selective laser sintering make?

Selective laser sintering (SLS) is an industrial 3D printing process that produces accurate – rapid prototypes and functional production parts in as fast as 1 day. Multiple nylon-based materials are available, which create highly durable final parts.

Which type of laser is used in selective laser sintering?

SLS uses a computer-controlled CO2 laser versus an ND: YAG fiber laser for DMLS, but both “draw” slices of a CAD model in a bed of material, fusing micron-sized particles of material one layer at a time.

What are the 7 categories of additive manufacturing?

7 Types of Additive Manufacturing

• VAT Photopolymerisation. VAT Photopolymerisation is also known as stereolithography.
• Material Jetting.
• Binder Jetting.
• Material Extrusion.
• Powder Bed Fusion.
• Sheet Lamination.
• Directed Energy Deposition.

What is direct metal laser sintering (DMLS)?

Direct metal laser sintering (DMLS) is the same as SLS, but with the use of metals and not plastics. The process sinters the powder, layer by layer. Selective Heat Sintering differs from other processes by way of using a heated thermal print head to fuse powder material together.

What is selective laser sintering and how is it different?

The key difference between Selective Laser Sintering and other plastic 3D printing technologies is that there is no need for supports. This is because the part is encapsulated in the material powder and does not need supports to remain stable. This is a major advantage over techniques such as Fused Deposition Modeling and Stereolithography.

What is the difference between SLS and DMLS?

Here’s one of the better descriptions I’ve found that explains it: “Selective Laser Sintering and Direct Metal Laser Sintering are essentially the same thing, with SLS used to refer to the process as applied to a variety of materials—plastics, glass, ceramics—whereas DMLS refers to the process as applied to metal alloys.

What is the difference between selective laser melting and SLS?

Selective Laser Melting (SLM) Compared to SLS, SLM is often faster (Gibson et al., 2010), but requires the use of an inert gas, has higher energy costs and typically has a poor energy efficiency of 10 to 20 \% (Gibson et al., 2010). The process uses either a roller or a blade to spread new layers of powder over previous layers.

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