Study on Process and Effective Factors of Stainless Steel Thin-Wall Parts Manufactured by Selective Laser Melting

Additive manufacturing of non-assembly mechanisms

“…Pins were built using a Dimetal 280 machine with 316L stainless steel, achieving minimum operating joint clearances of 0.2 mm [3], 0.3 mm [7] and 0.1 mm [8]. In addition, different conclusions were drawn after completion of different experiments regarding the processability of the SLM technique for non-assembly mechanism fabrication [27,28]. Processability issues like scanning speed, extraction of residual and support materials, build direction, and critical fabrication angle were considered.…”

“…In case of improper use of energy, the transmission of heat could melt the powder inside the clearances, thus sticking residuary material to the surfaces. The minimum joint clearance achievable is therefore dependent on the particle size of the powder and the quantity of the employed laser energy [3,28]. As previously mentioned, even though the SLM technique is a powder-based technology, support structures may still be needed when facing overhang fabrication.…”

“…Nevertheless, avoiding the insertion of support structures inside the clearances is often possible through proper choice of process parameters, i.e. fabrication direction, scanning speed, particle size, etc., which enable suitable critical fabrication angles [27,28]. Universal joints (Fig.…”

Research on Forming Quality of AlSi10Mg Powder for SLM Process

“…Wu Genli et al studied the influence of tilt angle and scanning strategy on the forming quality of the suspended structure SLM using Ti6Al4V metal powder [14] . Yang Yongqiang et al adopted Stainless steel powder was used to study the influence factors such as different laser power, scanning speed, powder preparing setting, defocus length and layer thickness on the forming effect in SLM [15] . Yang Xiongwen and others used stainless steel powder for SLM molding, and studied the dimensional accuracy and forming ability of typical geometric features of the series [16] .…”

Mathematical Model of Ti-6Al-4V Single Track Formed by Selective Laser Melting

“…How to improve the density of the parts manufactured by SLM has become an important topic of the researches done by experts and scholars currently. And the first step to improve the overall density of the parts is to have a basic knowledge of the features of the single track [1][2][3].…”