Efficiency of the pump in the lubricating and cooling fluid supply system

Cooling and lubrication are the most important processes in such operations as the metal workpiece cutting, drilling and grinding. It becomes necessary in machining a workpiece to supply the lubricating and cooling fluids to the tool operation zone in the required amount, which is provided by the pump and the connecting pipeline. Pump operation essentially depends on properties of the lubricating and cooling fluid, in particular, on its viscosity affecting the flow, pressure and energy costs. The paper propose an algorithm for determining the pump hydraulic characteristics, when supplying the lubricating and cooling fluid. As an example, the submersible vertical centrifugal pumps were considered designed for using in the machines cooling systems and systems supplying the lubricating and cooling fluid. Empirical dependences are presented of the pump head, consumed power, efficiency and indicator of the specific energy cost on the water supply. The obtained dependences were recalculated for the pump operating conditions with liquids, which viscosity was much higher than that of water. It is shown that viscosity significantly changes the pump characteristics during its operation in the network.

References

[1] Basten S., Seis L., Oehler M. et al. Tribological behaviour of AISI 4140 and WC-Co carbides during dry condition, using cryogenic media, and sub-zero metalworking fluids at high contact stresses. Wear, 2023, vol. 512–513, art. 204525, doi: https://doi.org/10.1016/j.wear.2022.204525

[2] Patel J., Soni A., Barai D.P. et al. A minireview on nanofluids for automotive applications: current status and future perspectives. Appl. Therm. Eng., 2023, vol. 219-A, art. 119428, doi: https://doi.org/10.1016/j.applthermaleng.2022.119428

[3] Mokriskij B.Ya., Morozova A.V. Controlling the parameters of the cutting technological system by the dissipative structures state. ICIE 2022. Springer, 2022, pp. 934–943, doi: https://doi.org/10.1007/978-3-031-14125-6_91

[4] Tiwari R.Sh., Vats P., Singh T. et al. An investigation on effect of hybrid nanofluids in end milling of aluminium 6061 alloy. In: Advances in mechanical and energy technology. Springer, 2022, pp. 85–97, doi: https://doi.org/10.1007/978-981-19-1618-2_9

[5] Urmi W.T., Rahman M.M., Safiei W. et al. Effects of minimum quantity lubrication technique in different machining processes — a comprehensive review. J. Adv. Res. Fluid Mech. Therm. Sci., 2022, vol. 90, no. 2, pp. 135–159, doi: https://doi.org/10.37934/arfmts.90.2.135159

[6] Nagaraj A., Uysal A., Gururaja S. et al. Analysis of surface integrity in drilling carbon fiber reinforced polymer composite material under various cooling/lubricating conditions. J. Manuf. Process., 2022, vol. 82, pp. 124–137, doi: https://doi.org/10.1016/j.jmapro.2022.07.065

[7] Rodriguez I., Soriano D., Ortiz-De-Zarate G. et al. Effect of tool geometry and lco2cooling on cutting forces and delamination when drilling CFRP composites using PCD tools. Procedia CIRP, 2022, vol. 108, pp. 752–757, doi: https://doi.org/10.1016/j.procir.2022.03.116

[8] Maddamasetty A., Bodduru K., Bevara S. et al. Performance evaluation of graphene added nanofluids and self-lubricating tools in machining Inconel 718. World J. Eng., 2022, vol. 19, no. 4, pp. 583–593, doi: https://doi.org/10.1108/WJE-02-2021-0074

[9] Lebedev V.A., Aliev M.M., Torop Yu.A. Evaluation of the influence of lubricating and cooling agents on the course of dissipative processes and cutting of materials. Trenie i iznos, 2022, vol. 43, no. 2, pp. 160–167. (In Russ.). (Eng. version: J. Frict. Wear, 2022, vol. 43, no. 1, pp. 108–113, doi: https://doi.org/10.3103/S1068366622020076)

[10] Velikanov N.L., Naumov V.A., Koryagin S.I. Hydraulic analysis of coolant-cutting fluid feed to material processing zone. Vestnik mashinostroeniya, 2017, no. 10, pp. 70–74. (In Russ.).

[11] Velikanov N.L., Naumov V.A., Koryagin S.I. Research of characteristics of centrifugal submersible pumps. Vestnik mashinostroeniya, 2018, no. 4, pp. 3–6. (In Russ.).

[12] Vinogradov D.V. Osnovnye vidy smazochno-okhlazhdayushchikh tekhnologicheskikh sredstv, primenyaemykh pri rezanii metallov [The main types of lubricants and coolants used in metal cutting.]. Moscow, Bauman MSTU Publ., 2018. 96 p. (In Russ.).

[13] Kireynov A.V., Esov V.B. Contemporary trends in cutting fluid usage for high-performance machining of materials with poor machinability. Inzhenernyy zhurnal: nauka i innovatsii [Engineering Journal: Science and Innovation], 2017, no. 2, doi: http://dx.doi.org/10.18698/2308-6033-2017-2-1591 (in Russ.).

[14] Medvedeva V.V. The rheological features of lubricating materials containing dispersed fillers based on hydrosilicates of magnesium. Nauchno-tekhnicheskie vedomosti SPbPU. Estestvennye i inzhenernye nauki [St. Petersburg state polytechnic university journal of engineering science and technology], 2017, vol. 23, no. 4, pp. 141–148, doi: https://doi.org/10.18721/JEST230414 (in Russ.).

[15] Houghton Garia 601 M-22. quaker-houghton.ru: website. URL: https://quaker-houghton.ru/products/oils/garia/garia-601-m22/ (accessed: 09.09.2022).

[16] Catalog of Sacemi elecric pumps. sacemigamar.com: website. URL: https://www.sacemigamar.com/en/download/ (accessed: 09.09.2022).

[17] Pogruzhnye vertikalnye tsentrobezhnye nasosy serii AST [AST series submersible vertical centrifugal pumps]. gpa.by: website. URL: https://gpa.by/index.pl?act=PRODUCT&id=969 (accessed: 09.09.2022). (In Russ.).

[18] GOST 33967–2016. Nasosy tsentrobezhnye dlya perekachivaniya vyazkikh zhidkostey. Popravki k rabochim kharakteristikam [State standard GOST 33967-2016. Centrifugal pumps pumping viscous liquids. Corrections for operating characteristics]. Moscow, Standartinform Publ., 2017. 18 p. (In Russ.).