Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks
The paper presents a mathematical model developed for calculating the force effect on the punch in the process of high-speed combined hot extrusion of bimetallic road milling picks under plane deformation conditions. To solve the problem, the process is divided into two phases: acceleration phase an...
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| Format: | Article |
| Language: | Russian |
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Belarusian National Technical University
2021-07-01
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| Series: | Наука и техника |
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| Online Access: | https://sat.bntu.by/jour/article/view/2461 |
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| author | K. Y. Bykov I. V. Kachanov I. M. Shatalov |
| author_facet | K. Y. Bykov I. V. Kachanov I. M. Shatalov |
| author_sort | K. Y. Bykov |
| collection | DOAJ |
| description | The paper presents a mathematical model developed for calculating the force effect on the punch in the process of high-speed combined hot extrusion of bimetallic road milling picks under plane deformation conditions. To solve the problem, the process is divided into two phases: acceleration phase and braking phase, which consists of two stages. A distinctive feature of the acceleration phase is that it allows the analysis of reverse extrusion, in the process of which the metal flows in the opposite direction to the punch stroke. A method for calculating the force acting on the punch at each phase of the process of plastic flow of a bimetallic workpiece into a matrix cavity with three deformation zones is presented in the paper. While solving the problem in a quasi-static formulation and proceeding from the conditions of the minimum power of internal forces, equations have been obtained for calculating the optimal field parameters aopt, bopt, gopt, depending on the elongation coefficients l and the friction coefficient m. The equations obtained within the framework of the developed model are quite correct, since they allow determining the minimum force acting on the punch. The considered calculation model and equations can be used in the development of industrial technology for high-speed combined hot extrusion of flat-step bimetallic road milling picks. |
| format | Article |
| id | doaj-art-1ea284cd517845e7abd91d4c5cd43813 |
| institution | OA Journals |
| issn | 2227-1031 2414-0392 |
| language | Russian |
| publishDate | 2021-07-01 |
| publisher | Belarusian National Technical University |
| record_format | Article |
| series | Наука и техника |
| spelling | doaj-art-1ea284cd517845e7abd91d4c5cd438132025-08-20T02:36:06ZrusBelarusian National Technical UniversityНаука и техника2227-10312414-03922021-07-0120428729510.21122/2227-1031-2021-20-4-287-2952132Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling PicksK. Y. Bykov0I. V. Kachanov1I. M. Shatalov2Belarusian National Technical UniversityBelarusian National Technical UniversityBelarusian National Technical UniversityThe paper presents a mathematical model developed for calculating the force effect on the punch in the process of high-speed combined hot extrusion of bimetallic road milling picks under plane deformation conditions. To solve the problem, the process is divided into two phases: acceleration phase and braking phase, which consists of two stages. A distinctive feature of the acceleration phase is that it allows the analysis of reverse extrusion, in the process of which the metal flows in the opposite direction to the punch stroke. A method for calculating the force acting on the punch at each phase of the process of plastic flow of a bimetallic workpiece into a matrix cavity with three deformation zones is presented in the paper. While solving the problem in a quasi-static formulation and proceeding from the conditions of the minimum power of internal forces, equations have been obtained for calculating the optimal field parameters aopt, bopt, gopt, depending on the elongation coefficients l and the friction coefficient m. The equations obtained within the framework of the developed model are quite correct, since they allow determining the minimum force acting on the punch. The considered calculation model and equations can be used in the development of industrial technology for high-speed combined hot extrusion of flat-step bimetallic road milling picks.https://sat.bntu.by/jour/article/view/2461road milling pickimpact extrusioncombined extrusiondeformation modehigh-speed extrusionmathematical modeloptimal mode |
| spellingShingle | K. Y. Bykov I. V. Kachanov I. M. Shatalov Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks Наука и техника road milling pick impact extrusion combined extrusion deformation mode high-speed extrusion mathematical model optimal mode |
| title | Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks |
| title_full | Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks |
| title_fullStr | Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks |
| title_full_unstemmed | Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks |
| title_short | Power Mode of High-Speed Combined Extrusion of Flat Bimetallic Road Milling Picks |
| title_sort | power mode of high speed combined extrusion of flat bimetallic road milling picks |
| topic | road milling pick impact extrusion combined extrusion deformation mode high-speed extrusion mathematical model optimal mode |
| url | https://sat.bntu.by/jour/article/view/2461 |
| work_keys_str_mv | AT kybykov powermodeofhighspeedcombinedextrusionofflatbimetallicroadmillingpicks AT ivkachanov powermodeofhighspeedcombinedextrusionofflatbimetallicroadmillingpicks AT imshatalov powermodeofhighspeedcombinedextrusionofflatbimetallicroadmillingpicks |