Analysis and developmentof the method for calculating calibration of the working plank in the cold tube roller rolling mills | Journal of Engineering Sciences

Analysis and developmentof the method for calculating calibration of the working plank in the cold tube roller rolling mills

Author(s): Pilipenko S. V., Grigorenko V. U.

Affilation(s): National Metallurgical Academy of Ukraine, 4 Gagarin Av., 49600, Dnipro, Ukraine

*Corresponding Author’s Address: 44-08@mail.ru

Issue: Volume 4; Issue 1 (2017)

Dates:
Paper received: March 14, 2017
The final version of the paper received: May 15, 2017
Paper accepted online: May 30, 2017

Citation:
Pilipenko S. V. Analysis and development of the method for calculating calibration of the working plank in the cold tube roller rolling mills / S. V. Pilipenko, V. U. Grigorenko // Journal of Engineering Sciences. —  Sumy : Sumy State University, 2017. — Volume 4, Issue 1. — P. B11-B16.

DOI: 10.21272/jes.2017.4(1).b3

Research Area: Investigation of Working Processes in Machines and Devices

Abstract: Analysis and development of the existing method of calculation of the calibrated profile of the working strips mills CTRR roller cold rolling pipe to ensure the required distribution of energy-power parameters along the cone. In presented paper, which has for aim the development of existing method for calculating the profile of calibrated working plank in the cold tube roller rolling mills, the analysis had been made and it was proposed to use Besier-lines while building the the profile of the plank working surface. It was established that the use of Besier spline-curve for calculating the calibration of supporting planks creates the possibility to calculate the parameters proceeding from reduction over the external diameter. The proposed method for calculating deformation parameters in CTRR mills is the result of development of existing method and as such shows the scientific novelty. Comparison of the plots for distribution of the force parameters of the CTRR process along the cone of deformation presents as evidence the advantage of the method to be proposed. The decrease of reduction value at the end of deformation zone favors the manufacture of tubes with lesser wall thickness deviation (especially longitudinal one, caused with waviness induced by the cold pilgering process). Joined the further development of the method of calculating the deformation parameters CTRR. It is proposed for the calculation of the calibration work surface support bracket mills CTRR to use a spline Bezier. The practical significance of the proposed method consists in the fact that calculation of all zones of the plank by means of one dependence allows simplifying the process of manufacturing the latter in machines with programmed numerical control. In this case the change of reduction parameters over the thickness of the wall will not exert the considerable influence on the character of the force parameters (the character and not the value) distribution along the cone of deformation.

Keywords: cold pilgering roller rolling, calibration (sizing) of the working plank, Besier spline-curve, deformation force, precision of tubes.

Full Text




Scientific journal "The Journal of Engineering Sciences"
ISSN 2312-2498 (Print), ISSN 2414-9381 (Online).

Faculty of Technical Systems and Energy Efficient Technologies
Sumy State University