TY - JOUR
T1 - A review of technological improvements in laser-based powder bed fusion of metal printers
AU - Khorasani, Amir Mahyar
AU - Gibson, Ian
AU - Veetil, Jithin Kozhuthala
AU - Ghasemi, Amir Hossein
PY - 2020/5/12
Y1 - 2020/5/12
N2 - Additive manufacturing (AM) is an emerging process that has been extremely improved in terms of technology and application in recent years. In this technology review, new industrial improvements in laser powder bed fusion (LPBF) of metals are discussed. LPBF has the lowest build rate among all AM processes that produce metals such as electron beam powder bed fusion, direct energy deposition, binder jetting and sheet lamination. The findings of the current research show that the most innovations and future directions of LPBF printers are toward increasing the speed of the process by using interchangeable feedstock chamber, closed-loop control powder handling, automated powder sieving, multi-layer concurrent printing, 2-axis coating and multi powder hoppers. To increase the speed of the process, the new improvements for transferring time and using fast lasers are presented. Another innovation in the building of LPBF printers is enhancing part quality by improving lasers with the shorter beam diameter, multi-lasers, uniform inert gas flow, accurate positioning systems, using high vacuum systems and using sensors and automation.
AB - Additive manufacturing (AM) is an emerging process that has been extremely improved in terms of technology and application in recent years. In this technology review, new industrial improvements in laser powder bed fusion (LPBF) of metals are discussed. LPBF has the lowest build rate among all AM processes that produce metals such as electron beam powder bed fusion, direct energy deposition, binder jetting and sheet lamination. The findings of the current research show that the most innovations and future directions of LPBF printers are toward increasing the speed of the process by using interchangeable feedstock chamber, closed-loop control powder handling, automated powder sieving, multi-layer concurrent printing, 2-axis coating and multi powder hoppers. To increase the speed of the process, the new improvements for transferring time and using fast lasers are presented. Another innovation in the building of LPBF printers is enhancing part quality by improving lasers with the shorter beam diameter, multi-lasers, uniform inert gas flow, accurate positioning systems, using high vacuum systems and using sensors and automation.
KW - Additive manufacturing
KW - Industrial improvement
KW - Laser
KW - Powder bed fusion
KW - 22/2 OA procedure
UR - http://www.scopus.com/inward/record.url?scp=85084490265&partnerID=8YFLogxK
U2 - 10.1007/s00170-020-05361-3
DO - 10.1007/s00170-020-05361-3
M3 - Article
AN - SCOPUS:85084490265
VL - 108
SP - 191
EP - 209
JO - International journal of advanced manufacturing technology
JF - International journal of advanced manufacturing technology
SN - 0268-3768
IS - 1-2
ER -