SLS 3D printing process

December 8, 2022

By siedery

SLS (Selective Laser Sintering) is a 3D printing process that can be used to form parts by accumulating layer by layer on a print bed through laser thermal melting of powder materials. the main advantage of the SLS process is that it can print parts with high strength, high precision and high complexity. As shown in the figure below, the basic process of SLS process includes.

  1. First, the powder material is evenly spread on the print bed and scanned by a scanning head or light source.
  2. Then, a laser will sinter the powder material along the scan line, forming a solid layer of the part.
  3. Next, the print bed is moved down a certain distance, and the powder material is again laid down and scanned.
  4. Repeat these steps until printing is complete.
  5. Finally, the print bed is raised and the printed part is placed in the powder remover to remove the unfused powder material.

The SLS process has some unique advantages that make it a great 3D printing process for rapid manufacturing and processing. The main advantages are.

  • The SLS process can work with a wide range of powder materials, including plastics, metals, ceramics and carbon fibers. This allows the SLS process to be used in multiple applications and to meet the needs of different applications.
  • The SLS process can print high-strength and high-precision parts with high processability. the SLS process can print with a precision of 0.1 mm, providing a high degree of accuracy and complexity.
  • The printing speed of SLS process is fast and can print a large number of parts in a short time. the speed of SLS process can reach dozens of parts per hour, which greatly improves the production efficiency.
  • The SLS process does not require support material for the printing process, and parts can be printed out directly. This avoids the need for support material removal, simplifies the printing process, and increases productivity.

It should be noted that the SLS process is a very mature 3D printing process that has been widely used in various fields. For example, the SLS process can be used in additive manufacturing, mold making, aerospace, medical devices, automotive manufacturing, etc., providing a fast, accurate and reliable processing method for these fields.

In addition, SLS processes can also be used for special applications such as bioprinting, structural health monitoring, and smart manufacturing. For example, the SLS process can be used to print models that simulate human organs for medical teaching and disease diagnosis; it can be used to print high-strength and high-precision structural parts for smart manufacturing and structural health monitoring, etc.

In short, the SLS process is an efficient, accurate and reliable 3D printing process that can meet the needs of various applications. With the SLS process, rapid manufacturing, processing and design can be achieved, improving productivity and product quality. However, the SLS process also has some limitations and shortcomings, so the actual application requirements should be considered comprehensively when selecting a 3D printing process. For example, the SLS process has limited material applicability and cannot use all types of powder materials; the printing accuracy and speed of the SLS process also have some limitations and cannot meet all application requirements. Therefore, appropriate compromises and trade-offs should be made when using the SLS process according to the actual situation.

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Founded in 2011, Siedery provides a one-stop shop for additive manufacturing and small-batch manufacturing services for small and medium-sized enterprises worldwide. We are experts in the CNC machining, injection molding, and 3D printing industries.
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