OBRABOTKAMETALLOV Vol. 23 No. 4 2021 45 TECHNOLOGY References 1. Tarleton E.S. Progress in filtration and separation . Elsevier Science and Technology, 2018. 698 p. ISBN 9780081013939. ISBN 0081013930. 2. MatanovićD., Čikeš M., Moslavac B. Sand control in well construction and operation . Berlin, Heidelberg, Springer, 2012. 200 p. ISBN 9783642256134. DOI: 10.1007/978-3-642-25614-1. 3. Deng F., Li X., He L., Feng Y. Experimental evaluation of metal foam for sand control. Journal of Petroleum Science and Engineering , 2019, vol. 176, pp. 1152–1160. DOI: 10.1016/j.petrol.2019.01.087. Influence of the parameters of deforming cutting on the features of the resulting slottedfilter structures Bauman Moscow State Technical University, 5 2nd Baumanskaya str., Moscow, 105005, Russian Federation a https://orcid.org/0000-0002-7258-7379, dm.buzaev@bmstu.ru, b https://orcid.org/0000-0003-3757-1299, zoubkovn@bmstu.ru Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science. 2021 vol. 23 no. 4 pp. 33–46 ISSN: 1994-6309 (print) / 2541-819X (online) DOI: 10.17212/1994-6309-2021-23.4-33-46 Obrabotka metallov - Metal Working and Material Science Journal homepage: http://journals.nstu.ru/obrabotka_metallov ARTICLE INFO Article history : Received: 09 August 2021 Revised: 31 August 2021 Accepted: 16 October 2021 Available online: 15 December 2021 Keywords : Filters Filtration Solid-liquid separation Filtering tubes Slotfilters Regeneratingfilters Deforming cutting ABSTRACT Introduction. Slotfilters are in demand in petrochemical, machine-building, food, mining and other industries. DCis an edge cutting machining method based on undercutting and plastic deformation of the workpiece’s surface layer without its removal in the form of chip. DCstands out from the other slot structure forming methods for its capability of obtaining fine filters (slot width upwards of 20 μm) while maintaining relatively high productivity rate and being waste-free. Nevertheless, patterns of through slots cutting by means of DChad virtually not been investigated previously. The purpose of the workis to establish the influence of the main parameters of deformational cutting, namely feed and depth of cut, on features of through slots obtained, as well as identifying combinations of parameters that ensure the production of structures suitable forfiltration. Method of investigation consisted of experiments on through-cutting of corrugations stamped on copper strips and a visual analysis of the structures obtained. Cutting through the corrugations byDCwas conducted on a lathe while using a special attachment – a barrel which workpiece corrugated strips were wrapped around and fixed on with tension. Results and discussion . The resulting typical structures obtained under different combinations of depth of cut and feed are systemized and divided into the following groups: “0” – the absence of the through cut; “1” – uniform slots; “2” – “twinning” (pairwise convergence of slot walls), “3” – stripping of every second slot wall; “4” – non-regular or complete stripping of slot walls; “5” – uniform slots with a continuous burr (“skirt”) formed along the slot row on the internal side of the corrugation; “6” – uniform slots with a “skirt” opened incompletely. In the range of feeds 0.2 ... 0.4 mm/rev with increasing cutting depth, there is a transition from structures of group “1” to structures of group “2”, and the greater the feed, the greater the maximum depth of cut, at which uniform slots remain. Group “1” is assigned to the area of structures suitable forfiltration applications, although it is characterized by the formation of individual burrs on the inner side of each slot. At lower feeds (up to 0.2 mm/rev) with further increase of the depth of cut another group of structures potentially suitable for filtering purposes is reached: groups “5” and “6”. With the “skirt” formed, individual burrs next to each slots are absent, and the shape of slots is cleaner. With a decrease in feed, the width of the resulting slots decreases. The least tool feed value, at which uniform slots are obtained, is 0.05 mm/rev which corresponds to 19 μm slot width. Establishing the causes of “twinning” and the formation of “skirts” requires further investigation. For citation: Buzaev D.A., Zubkov N.N. Influence of the parameters of deforming cutting on the features of the resulting slotted filter structures. Obrabotka metallov (tekhnologiya, oborudovanie, instrumenty) = Metal Working and Material Science , 2021, vol. 23, no. 4, pp. 33–46. DOI: 10.17212/1994-6309-2021-23.4-33-46. (In Russian). ______ * Corresponding author Buzaev Dmitry A. , Assistant Bauman Moscow State Technical University, 5 2nd Baumanskaya Str., 105005, Moscow, Russian Federation Tel.: +7 (903) 679-96-59, e-mail: dm.buzaev@bmstu.ru Dmitry Buzaev a,* , Nikolay Zubkov b
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