Influence of Selective Laser Melting Processing Parameters of Co-Cr-W Powders on the Roughness of Exterior Surfaces

Euroinvent ICIR 2018

Baciu, M.A.^1 ; Baciu, E.R.^2 ; Bejinariu, C.^3 ; Toma, S.L.^3 ; Danila, A.^4 ; Baciu, C.^3

S.C. Colorcontrol S.R.L., Str. Orastiei 25A, Cluj-Napoca, Romania^1

Faculty of Dental Medicine, Grigore T. Popa University of Medicine and Pharmacy Iasi, 16 Universitatii St., Iasi

700115, Romania^2

Gheorghe Asachi Technical University from Iasi-Romania, Faculty of Materials Science and Engineering, Blvd. Dimitrie Mangeron, No. 71A, Iasi

700050, Romania^3

S.C. LAMAS MICROTECH S.R.L. Bucuresti, Str. Aron Cotrus, no. 51-59, Bucuresti, Romania^4

关键词: Exterior surfaces;    Measurements of;    Medical practice;    Processing parameters;    Roughness of surface;    Scanning speed;    Selective laser melting;    Technological parameters;   

Others  :  https://iopscience.iop.org/article/10.1088/1757-899X/374/1/012010/pdf
DOI  :  10.1088/1757-899X/374/1/012010

来源: IOP

【 摘 要 】

Selective Laser Melting (SLM) represents an Additive Manufacturing method widely used in medical practice, mainly in dental medicine. The powder of 59% Co, 25% Cr, 2.5% W alloy (Starbond CoS Powder 55, S&S Scheftner C, Germany) was processed (SLM) on a Realizer SLM 50 device (SLM Solution, Germany). After laser processing and simple sanding with Al2O3or two-phase sanding (Al2O3and glass balls), measurements of surface roughness were conducted. This paper presents the influences exercised by laser power (P = 60 W, 80 W and 100 W), the scanning speed (vscan = 333 mm/s, 500 mm/s and 1000 mm/s) and exposure time (te = 20 μs, 40 μs and 60 μs) on the roughness of surfaces obtained by SLM processing. Based on the experimental results obtained for roughness (Ra), some recommendations regarding the choice of favorable combinations among the values of technological parameters under study in order to obtain the surface quality necessary for subsequent applications of the processed parts (SLM) have been made.