What are the factors affecting the quality of SLS product?

There are many factors affecting the accuracy of SLS molding, such as SLS equipment accuracy error, CAD model slicing error, scanning method, powder particle, ambient temperature, laser power, scanning speed, scanning pitch, and single layer thickness.

Is selective laser sintering sustainable?

The magic formula was a dual laser system, powered by Materialise software. We’ve created a laser sintering process that empowers our customers to make sustainable choices.

Is selective laser sintering expensive?

Given its low cost per part and durable materials, SLS printing is an economical way to produce complex, custom parts, or a series of small components for end products. In many cases, laser sintering is a cost-effective alternative to injection molding for limited-run or bridge manufacturing.

Which one of the following is a limitation for selective laser sintering?

Next are some of the disadvantages of SLS. The biggest problem of the technology is that the fabricated parts can be porous and/or have a rough surface depending on the used materials. Another problem, mainly for polymer parts, is thermal distortion. This can cause shrinking and warping of fabricated parts.

How do you reduce shrinkage in SLS process?

A way to reduce shrinkage and increase dimensional stability of polymers is the addition of inorganic fillers. While this has been common practice in conventional polymer processing, it has also been picked up by the Additive Manufacturing community; for example, in the Selective Laser Sintering (SLS) process.

What is selective laser sintering used for?

Selective laser sintering enables engineers to prototype parts early in the design cycle, then use the same machine and material to produce end-use parts.

How long is selective laser sintering?

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.

What are the problems with the current rapid prototyping and additive manufacturing technologies?

29.11 Which of the following are problems with the current rapid prototyping and additive manufacturing technologies (three best answers): (a) inability of the designer to design the part, (b) inability to convert a solid part into layers, (c) limited material variety, (d) part accuracy, (e) part shrinkage, and (f) …

What is selectselective laser sintering (SLS)?

Selective Laser Sintering is usually thought of as an industrial 3D printing process, rather than an affordable, low-cost technique such as FDM. This has been the case since 3D Systems, EOS and Stratasys produced the leading SLS 3D printer machines in the 1990s.

How does laser sintering work?

A beam of laser then traces the pattern on the very first layer thereby sintering it together. The platform is further lowered by the height of the second layer and powder is again applied. This process is continued until the part is completed. The excess amount of powder at each layer helps to support the part during its build-up.

What is DMLS laser sintering?

SLS machines, such as, Direct Metal Laser Sintering (DMLS) uses single component metal powders. Powders are usually produced by ball milling technique and by other methods such as fluidized beds, blades, brushes, etc.

What metals can be used for laser sintering?

Metals can be used in a process similar to Selective Laser Sintering, called DMLS (Direct Metal Laser Sintering). The most commonly used polyamide is PA 12, also known as Nylon. It’s got good chemical resistance and is fairly strong, and can also be mixed with other materials such as carbon or aluminium to create composite powder materials.