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Научные труды ДонНТУ >
Вестник Донецкого национального технического университета >
№4(4)'2016 >
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http://ea.donntu.ru/handle/123456789/31115
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| Название: | Влияние формы сечения и расположения сортового металлопроката на энергосиловые параметры резки фасонными ножами |
| Другие названия: | The influence of the cross-section shape and the location of metal products on power parameters of cutting with shaped cutters |
| Авторы: | Ульяницкий, В.Н.
Петров, П.А.
Ulianitsky, V.N.
Petrov, P.A. |
| Ключевые слова: | сортовой металлопрокат
фасонные ножи
сортовые ножницы
сила резки
работа резки
квадрат
круг
швеллер
полоса
штрипс
shaped metal products
profile cutters
cutting force
cutting performance
angle
channel bar
strip |
| Дата публикации: | 2016 |
| Издатель: | ДонНТУ |
| Библиографическое описание: | Ульяницкий, В.Н. Влияние формы сечения и расположения сортового металлопроката на энергосиловые параметры резки фасонными ножами / В.Н. Ульяницкий, П.А. Петров // Вестник ДонНТУ. - 2016. - №4(4). - С. 45–49. - Библиогр. в конце ст. |
| Аннотация: | Выполнен анализ влияния формы разрезаемого сечения и относительного направления движения инструмента на затрачиваемую работу при резке сложнопрофильного металлопроката и
простых сортовых заготовок фасонными ножами. |
| Описание: | Background. In the practice of metallurgical production, various units are used for the transverse separation of billets. The variety of mechanical cutting schemes complicates the choice of the most rational method of separation and requires additional theoretical and experimental studies. In this regard, the definition of technological opportunities of operated and newly designed equipment for the separation of geometrically-complex rolled metal in the modern section mill is one of the important and urgent tasks.
Materials and/or methods. The main indicators of the cutting process which is divided into three stages (cutter indentation in metal, shift, or cut, separation) are the force of cutting, the definition of which is produced by the method of numerical recurrent solutions of finite-difference schemes of the static balance of the allocated elementary volumes. Experimental research methods included: physical modeling of the processes, strain gauge measurement methods and measurement of geometric parameters.
Results. Analytical dependencies underlying the mathematical models of cutting process of a variety of profile shapes with cutters correlate well with the experimental data. On the basis of the developed technique, we have performed the simulation of cutting process of geometrically-complex rolled metal of equal cross-section at different process conditions, which allows expanding the understanding of the process and determining the factors influencingthe efficiency of the separation process implemented by sectioning scissors.
Conclusion. The description of the separation process of the flanges is proposed taking into account,
in contrast to the classical view, not only the influence of the cross-sectional area of the billet on the value of the maximum force and the total performance of cutting, but also the shape (location) of the profile relative to the movement of the cutters. The obtained values of the maximum force and cutting performance at various schemes of implementation ofthe separation of shaped sections by the varietal scissors clarify and extend the classical representation of the process in the locus of cutting. This allows setting adequate initial parameters in the design of new mechanical equipment and modernization of existing processing units. |
| URI: | http://ea.donntu.org/handle/123456789/31115 |
| Располагается в коллекциях: | №4(4)'2016
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