Development of selective laser sintering of powder compositions of constructional steels
Heading:
| 1Kashenkova, AV, 2Kalinina, NE, 2Dzhur, EA 1Oles Honchar Dnipro National University, Dnipro, Ukraine; SE «PA Yuzhny Machine-Building Plant named after A. Makarov», Dnipro, Ukraine 2Oles Honchar Dnipro National University, Dnipro, Ukraine |
| Space Sci. & Technol. 2019, 25 ;(5):18-24 |
| https://doi.org/10.15407/knit2019.05.018 |
| Publication Language: Ukrainian |
Abstract: Three-dimensional printing implementation is an important stage in the progress of the aircraft industry. The additive production is considered as an alternative to milling, stamping, and casting. The use of 3D printers and bulk scanning will lighten the design of an aircraft and thus reduce fuel and material costs. Stainless steel is used in all spheres of human activity from the food industry to electronics and precision mechanics. AISI 316 steel is used in the manufacture of equipment for the chemical industry as well as for the manufacture of products used in aggressive environments, such as, for example, seawater in cold seas.
The anticorrosion properties of 316L steel are manifested due to the presence of a layer of chromium oxide on the metal surface. This protective layer is very stable, and even after mechanical or chemical damage, it quickly takes its former form, and the anticorrosive properties of the metal remain unchanged. The technological process has been developed for the manufacture of billets from AISI 316L powder alloy by selective laser sintering. The workpiece heat treatment technology is proposed, which includes homogenization at 860 °C, tempering from 1050 °C, and tempering at 510 °C for 60 min, cooling in air. As a result, specimens were obtained, the structure and mechanical properties of the alloy were investigated, and the technology of thermal processing of billets was developed. It has been proven that 3D-printing can be a full replacement of investment casting. A high set of mechanical properties of powder alloys has been obtained: σv = 725 MPa, δ5 = 42 %, Ψ = 56 %, KCU = 241 J/cm2. |
| Keywords: 3D-printing, composition, construction steel, laser, model |
References:
1. Bagrov V. V., Golovanov I. V., Kuprinov N. L. (1996). Fundamentals of the method of selective laser sintering of metalpolymer powder compositions. Preprint of FIAN-M, No.14.
2. Boguslaev В. А., Kachan A. Y., Kalinin N. E. (2007). Aerospace materials and technologies. Zaporozhye: Motor Sich.
2. Boguslaev В. А., Kachan A. Y., Kalinin N. E. (2007). Aerospace materials and technologies. Zaporozhye: Motor Sich.
3. Gryaznov M. Y., Shotin S. V., Chuvildeev V. N. (2012). The effect of esostructural hardening of 316L steel with layer-by-layer laser fusion. Vestnik of the Nizhny Novgorod University named after Yu. N. I. Lobachevsky, 5(1), 27—50.
4. Nazarov A. P. (2011). Prospects for rapid prototyping using selective laser sintering / melting method. Vestnik MSTU «Stankin», 1(4), 46—52.
5. Smurov I. Y., Movchan I. A., Yadrojtsev I. A., Okun’kova A. A., Tsvetkova E. V., Cherkasova N. Yu. (2011). Additive production using a laser. Vestnik MSTU «Stankin», 2(4), 144—146.
6. Shishkovsky I. V. (2001). Synthesis of functional products from gradient materials by the method of selective laser sintering. Perspective materials, No. 5, 60—64.
7. Hugh Y. (2001). Rapid Prototyping Course. Version 1.0. URL: http: // claymore. Engineer.gvsu.edu/eod/manufact 302.htm/pgfld-510663 (Last accessed: 19.08.2019).
8. Zinchenko V. P., Konotop D. I., Sidorenko A. P., Borisov V. V. (2011). Information technologies for modeling the layout of a complex technical object. Information systems, mechanics and control, No. 6, 27—35.
4. Nazarov A. P. (2011). Prospects for rapid prototyping using selective laser sintering / melting method. Vestnik MSTU «Stankin», 1(4), 46—52.
5. Smurov I. Y., Movchan I. A., Yadrojtsev I. A., Okun’kova A. A., Tsvetkova E. V., Cherkasova N. Yu. (2011). Additive production using a laser. Vestnik MSTU «Stankin», 2(4), 144—146.
6. Shishkovsky I. V. (2001). Synthesis of functional products from gradient materials by the method of selective laser sintering. Perspective materials, No. 5, 60—64.
7. Hugh Y. (2001). Rapid Prototyping Course. Version 1.0. URL: http: // claymore. Engineer.gvsu.edu/eod/manufact 302.htm/pgfld-510663 (Last accessed: 19.08.2019).
8. Zinchenko V. P., Konotop D. I., Sidorenko A. P., Borisov V. V. (2011). Information technologies for modeling the layout of a complex technical object. Information systems, mechanics and control, No. 6, 27—35.