In the most basic sense, this is exactly what happens in the Selective Laser Sintering process.

Selective laser melting (SLM) additive manufacturing of pure tungsten encounters nearly all intractable difficulties of SLM metals fields due to its intrinsic properties.

2. Table 2 provides the manufacturing parameters with different energy input.

Diagram flexural stress – strain with the same energy density . Unlike SLA or FDM, selective laser sintering doesn’t require any supports, as the powder in the bin encompasses the part and keeps it stable, no matter the geometry. This is a major advantage as printing supports can affect surface finish, print speed, and means more intricate designs can be printed. The schematic diagram of SLS system is as shown in the Figure 1. A method of fabricating a fully dense, three dimensional object by direct laser sintering is disclosed. 2 The procedures of selective sintering (SLS - Selective Laser Sintering) developed after 1992 are based on the experience gained in designing and manufacturing stereo lithography equipment (STL) and the expansion of technological research on other groups of materials Many parameters used in a SLS process are determined by powder type: blended powders have limitations due to wetting and diffusion, while prealloyed powders require processing in a small temperature range dictated by the alloy composition. Housholder [1] a) b) Fig. Direct laser metal sintering (DLMS), also referred to as direct laser metal forming (DLMF) and selective laser melting (SLM), is a method wherein a highly intensive laser beam is directed onto a metal powder bed and fused metal particles according to a computer-aided design file (Shibli et al., 2013). Selective Laser Sintering (SLS), also just known as Laser Sintering (LS), creates tough and geometrically complex components for batch or serial manufacturing in a wide variety of applications. Selective Laser Sintering (SLS) is a type of Powder Bed Fusion (PBF) wherein a bed of powder polymer, resin or metal is targeted partially (sintering) or fully (melting) by a high-power directional heating source such as laser that result to a solidified layer of fused powder [70]. Fig. This paper presents an investigation into residual stresses in- Selective Laser Sintering and Selective Laser Melting. SLS 3D printing has been a popular choice for engineers in product development for decades. Literature review:.....… SLS printing, also referred to as powder bed fusion, is considered the “workhorse” technology of 3D print providers, due to large build volumes and a range of engineering thermoplastics – making it the perfect choice for series manufacture and complex free-form shapes for end-use applications. Descriptions and diagrams of the selective laser sintering process using powdered polyamide:* source: MaterialGeeza via Wikipedia.

a carbon dioxide laser, to fuse small 26, 27 However, there are still limitations in laser sintering of the sol‐gel thin films. Selective laser sintering (SLS) is among additive manufacturing methods enabling building components from powdered materials. Introduction: ..... 2 2. Schematic diagram of powder sintering method introduced by R.F. Selective Laser Sintering - Selective Laser Sintering Selective laser sintering is an additive rapid prototyping technique that uses a high power laser to fuse small particles of thermoplastic ... | PowerPoint PPT presentation | free to view One of the limitations is small critical thickness. Usually SLS involves the use of a high power laser, e.g.

The only difference between the two is that SLS is normally used to describe the process when used for other materials.

Fig. Selective laser sintering (SLS) is a rapidly developing additive manufacturing technique, with advantages in flexibility and low material waste. Once the selective laser sintering process has been completed and the object has been printed, it is left to cool in the receptacle for the powdered material before being handled.

Technique uses a laser as the power source to sinter powdered material layer by layer to form 3-dimensional objects. Advances in Thermal Modeling of Selective Laser Sintering of Single-Component Metal Powders Bin Xiao1, Yuwen Zhang2 1: New Technology Team, Tyco Fire Suppression & Building Products, USA, bxiao@tycoint.com 2: Department of Mechanical and Aerospace Engineering, University of Missouri, USA, zhangyu@missouri.edu Abstract Selective laser sintering (SLS) of single component metal …

Selective laser sintering (SLS) is used to produce sacrificial sand moulds for the foundry industry. The particle size diagram is shown in figure 2.

3 presents the tensile, and Fig. Selective Laser Sintering. Another layer of powder is deposited and melted, along with a portion of the previous layer. 4 flexural properties of the material. SLS (selective laser sintering) and DMLS (direct metal laser sintering) are essentially the same process; both involve sintering rather than full melting. Selective Laser Sintering. Precision printing . Selective laser sintering (SLS) is an additive manufacturing (AM) technology that uses a laser to sinter powdered plastic material into a solid structure based on a 3D model.