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 SM ISO690:2012OMER MOHAMED, Abdalla Mohamed, DUMITRASH, P. G., DIMA, Adrian. Frictional force vector reversal at metal drawing with ultrasonic activation of the tool. In: Электронная обработка материалов, 2006, nr. 6(42), pp. 76-79. ISSN 0013-5739. |
| EXPORT metadate: Google Scholar Crossref CERIF DataCite Dublin Core |
 Электронная обработка материалов |
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| Numărul 6(42) / 2006 / ISSN 0013-5739 /ISSNe 2345-1718 | ||||||
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| Pag. 76-79 | ||||||
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The paper presents the possibility to reduce the average drawing force in the technologies for obtaining tubes, rods and wires, when the tool is located in the oscillation maximum of the ultrasonic waves and actuated parallel to the drawing direction. This reduction is explained by the frictional force vector reversal during the time T/2-2t1 within a complete oscillation period, when vtr/vv<1. This fact justifies the use of ultrasonic energy in the plastic deformation processes of resistive to cold drawing metals. |
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