Obrabotka Metallov 2015 No. 1

ОБРАБОТКА МЕТАЛЛОВ № 1 (66) 2015 32 ТЕХНОЛОГИЯ speed of the laser beam from 300 to 100 mm/min; from 0,9 to 1,27 mm by reducing the laser beam scanning step from 0,15 to 0,1 mm; from 0,88 to 0,91 mm by increasing the heating temperature of the powder material from 26 to 200°C. Keywords: layer-by-layer laser sintering, sintering conditions, quality of the sintered surface layer, powder material. DOI: 10.17212/1994-6309-2015-1-27-32 References 1. Wohlers Report 2013: Additive manufacturing and 3D printing state of the industry . Fort Collins, Colorado, Wohlers Associates, 2013. ISBN 0-9754429-9-6 2. Additive fabrication terminology unraveled. Available at: http://www.additive3d.com (accessed 26.01.2015) 3. GrigoryantsA.G. Osnovy lazernoi obrabotki materialov [Fundamentals of laser materials processing]. Moscow, Mashinostroenie Publ., 1989. 304 p. ISBN 5-217-00432-0 4. Kuznetsov V.E. Sistemy bystrogo izgotovleniya prototipov i ikh rasshireniya [Rapid prototyping systems and their extensions]. CAD/CAM/CAE Observer , 2003, no. 4 (13), pp. 2–7. 5. Gibson I.B., Rosen D.W., Stucker B. Additive manufacturing technologies: rapid prototyping to direct digital manufacturing. New York, USA, Springer Publ., 2009. 459 p. ISBN-10: 1441911197. ISBN-13: 9781441911193 6. Tolochko N.K., Mozzharov S.E., Yadroitsev I.A., Laoui T., Froyen L., Titov V. I., Ignatiev M.B. Balling processes during selective laser treatment of powders. Rapid Prototyping Journal , 2004, vol. 10, iss. 2, pp. 78–87. doi: http://dx.doi.org/10.1108/13552540410526953 7. Maeda K., Childs T.H.C. Laser sintering (SLS) of hard metal powders for abrasion resistant coatings. Journal of Materials Processing Technology , 2004, vol. 149, iss. 1–3, pp. 609–615. doi: 10.1016/j.jmatprotec.2004.02.024 8. Murali K., Chatterjee A.N., Saha P., Palai R., Kumar S., Roy S.K., Mishra P.K., Choudhury A.R. Direct selective laser sintering of iron-graphite powder mixture. Journal of Materials Processing Technology . 2003, vol. 136, iss. 1–3, pp. 179–185. doi: 10.1016/S0924-0136(03)00150-X 9. Olevsky E.A., German R.M. Effect of gravity on dimensional change during sintering–I. Shrinkage anisotropy. Acta Materialia , 2000, vol. 48, iss. 5, pp. 1153–1166. doi: 10.1016/S1359-6454(99)00368-7 10. ChatterjeeA.N., Kumar S., Saha P., Misha P.K. ChoudhuryA.R. An experimental design approach to selective laser sintering of low carbon steel. Journal of Materials Processing Technology , 2003, vol. 136, iss. 1–3, pp. 151– 157. doi: 10.1016/S0924-0136(03)00132-8 11. Panchenko V.Ya., Golubev V.S., Vasil’tsov V.V., Galushkin M.G., Grezev A.N. Lazernye tekhnologii obrabotki materialov: sovremennye problemy fundamental’nykh issledovanii i prikladnykh razrabotok [Laser materials processing technologies: modern problems of fundamental research and applications]. Moscow, Fizmatlit Publ., 2009. 664 p. ISBN 978-5-9221-1023-5 12. Saprykin A.A., Petrushin S.I., Saprykina N.A. Sposob lazerno-komp’yuternogo maketirovaniya [Amethod of laser-computer prototyping]. Patent RF, no. 2268493, 2006. 13. Saprykina N.А., Saprykin А.А. Engineering Support for Improving Quality of Layer-by-layer Laser Sintering. The 7th International Forum on Strategic Technology IFOST 2012 . Tomsk, TPU Press, 2012, pp. 129–132. 14. Spiridonov A.A. Planirovanie eksperimenta pri issledovanii tekhnologicheskikh protsessov [Design of experiment in the study of technological processes]. Moscow, Mashinostroenie Publ., 1981. 184 p. 15. Saprykina N.А., Saprykin А.А. Improvement of surface layer formation technology for articles produced by layer-by-layer laser sintering. Applied Mechanics and Materials , 2013, vol. 379, pp. 56–59. doi: 10.4028/www. scientific.net/AMM.379.56 Received 26 January 2015 Revised 10 February 2015 Accepted 15 February 2015