Analysis of the Interaction between the Abrasive Jet Stream and the Inner Surface of the Jet Forming Nozzle

The article presents the analysis of the interaction between the abrasive jet stream and the inner surface of the jet stream forming nozzle. A physico-mathematical model of the process was developed. This study enabled the authors to determine the relationship between the particle acceleration and its size, and the influence of the distance between the abrasive particles on the movement of the abrasive material inside the jet stream forming nozzle. The parameters of motion of the abrasive particles inside the jet stream forming nozzle were compared in the 2D and 3D representation. The results obtained make it possible to evaluate the pattern of wear of the inner channel of the jet stream forming nozzle and analyze the reasons for its occurrence. The results of the theoretical research and mathematical simulation can be used as the basis for further studies of the life extension of the jet stream forming nozzle through the use of new design and technological decisions. Specifically, it can be achieved if the jet steam forming nozzle has a layered structure and the wear-in time is reduced during the operation.

References

[1] Stepanov Iu.S., Barsukov G.V. Sovremennye tekhnologicheskie protsessy mekhanicheskogo i gidrostruinogo raskroia tekhnicheskikh tkanei [Modern technological processes of mechanical cutting and jetting technical fabrics]. Moscow, Mashinostroenie publ., 2004. 239 p.

[2] Stepanov Iu.S., Burnashov M.A., Golovin K.A. Progressivnye tekhnologii gidrostruinogo rezaniia materialov [Advanced technologies jetting cutting materials]. Tula, TulGU publ., 2009. 318 p.

[3] Erukhimovich Iu.E. Matematicheskoe modelirovanie i sovershenstvovanie metoda rascheta effektivnosti protsessa rezaniia gornykh porod gidroabrazivnym instrumentom. Diss. kand. tekh. nauk [Mathematical modeling and improving the efficiency of the method of calculation of cutting rocks hydroabrasive tool. Cand. tech. sci. diss.]. Tula, 1999. 17 p.

[4] Martin. M. Handbook of Deposition Technologies for Films and Coatings. William Andrew, 2009. 936 p.

[5] Kennedy D.M., Hashmi M.S.J. Methods of wear testing for advanced surface coatings and bulk materials. Journal of Materials Processing Technology, 1998, vol. 300, iss. 3–4, pp. 246–253.

[6] ANSYS. Available at: http://www.ansys.com (accessed 12 Mach 2014).

[7] Maniadaki K., Kestis T., Bilalis N., Antoniadis A. A finite element-based model for pure waterjet process simulation. International Journal of Machine Tools and Manufacture, 2007, vol. 31, iss. 9–10, pp. 933–940.

[8] Mabrouki T., Raissi K., Cornier A. Numerical simulation and experimental study of the interaction between a pure high-velocity waterjet and targets: contribution to investigate the decoating process. Wear, 2000, vol. 239, pp. 260–273.

[9] Mabrouki T., Raissi K. Stripping process modelling: Interaction between a moving waterjet and coated target. International Journal of Machine Tools and Manufacture, 2002, vol. 42, pp. 1247–1258.

[10] Gerasimova A.M., Kolpakov V.I. Chislennoe modelirovanie dvizheniia abrazivnykh chastits v fokusiruiushchem nasadke [Numerical simulation of the motion of the abrasive particles in the focusing cup]. Molodezhnyi nauchno-tekhnicheskii vestnik [Youth Science and Technology Gazette]. 2013, no. 11. Available at: http://sntbul.bmstu.ru/doc/637101.html (accessed 19 May 2015).

[11] Gerasimova A.M., Efimova S.A., Prokhorova A.M., Kolpakov V.I. Osobennosti fiziko-matematicheskoi postanovki i chislennogo resheniia tipovykh zadach gidroabrazivnoi rezki razlichnykh materialov [Features of physical and mathematical formulation and numerical solution of typical problems waterjet cutting various materials]. Inzhenernyi vestnik [Engineering Herald]. 2014, no. 1, pp. 1–10. Available at: http://engbul.bmstu.ru/issue/<неи679386.html (accessed 21 May 2015).

[12] Tarasov V.A., Kolpakov V.I., Korolev A.N., Baskakov V.D. Chislennoe modelirovanie protsessa struino-dinamicheskoi promyvki detalei s glukhimi otverstiiami [Numerical Simulation of Process of Jet-Dynamic Flushing of Parts with Blind Holes]. Vestnik MGTU im. N.E. Baumana. Ser. Mashinostroenie [Herald of the Bauman Moscow State Technical University. Mechanical Engineering]. 2011, no. 4(85), c. 34–41.