The balance of dismissed volume during upsetting of billet with account of conditions of deformation.
Abstract
The scientific and practice necessary of count of irregularity of deformation during upsetting of billets by flat dies is grounded and influence of temperature and mechanic modes at deformation and tribo-contact condition is setting by dimension of realized barreling. Rationality of composition of balance of dismissed volume is shown at upsetting operation of cylindrical billets with complex counting of influence of deformation conditions by volume of barrel profile part of work-piece. Maximums of quantitative differences of barreling coefficients of work-pieces with same dimensions are finding after upsetting at different condition. Methodic of calculation is carrying out and balances of dismissed volumes and degrees of deformation is analyzing. Parts of deformation for barrel profile forming are finding for work-pieces from different materials after upsetting at different conditions. Showed about discounting of deformation condition during calculation of barreling coefficients of work-pieces by traditional methodic lead to errors in less of results (to 24.5 % for Steel 3, to 5.9 % for Aluminum AD1, to 5.1 % for Cooper M1) during hot upsetting and errors in up of results (to 54.5 % for Aluminum AD1, to 44.3 % for Cooper M1, to 30.3 % for Brass L60) during cold upsetting of billets with same dimensions. Basic ground about degree of deformation that find from dismissed volumes with counting of barreling is shown to correspondent of degree of deformation that calculate from difference of billets high during upsetting. Parts of degrees of deformation is correlated in common balance of volume can be express from common degree of deformation.References
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3. Ajay Kumar Kaviti, Om Prakash, P. Vishwanath Kumar. Prediction of coefficient of friction for Aluminum Billet, Archives of Applied Research, Scholars Research Library, 2011. No 3 (4), pp. 328-335.
4. Malayappan S., Narayanasamy R. An experimental analysis of upset forging of aluminium cylindrical billets considering the dissimilar frictional conditions at flat die surfaces, International Journal of Advanced Manufacturing Technology, May, 2004, Vol. 23, Issue 9/10, pp. 636-643.
5. Rajeev Arya, Kuldip Singh Parihar, Pritesh Prajapati. Near net shape upsetting of cooper billet using friction determination curve, International Journal of Advanced Engineering Research and Studies, January-March, 2012, Vol. 1, Issue II, pp. 51-54.
6. Tahir Altinbalik, Yilmaz Çan. An upper bound analysis and determination of the barreling profile in upsetting, Indian Journal of Engineering & Material Sciences, December, 2011, Vol. 18, pp. 416-424.
7. Szyndler D., Pietrzyk M., Lenard J.G., Fyke S.H. Inverse analysis applied to the evaluation of friction and rheological parameters in hot forming of steel, Proc. 8th International Conference Metal Forming’ 2000, Sept. 3-7.2000. Krakow; Poland, 2000, pp.101-106.
8. Jerzy Kajtoch. Strain in upsetting process, Metallurgy and foundry engineering, 2007, Vol. 33, No 1, pp. 51-61.
9. Kuhar’ V.V., Lavrentik O.A., Burko V.A. Bochkoobrazovanije pri osadke chernyh i tsvetnyh metallov i splavov, Trudy mezhdunarodnoj nauchno-tehnicheskoj konferencii „Sovremennje dostizheniya v teorii i tehnologii plasticheskoj obrabotki metallov”, 26-28 sentjabrja 2007 g, Sankt-Peterburg, iz-vo SPbGPU, 2007, pp. 347-351.
10. Kuhar’ V.V. Funkcional’naya svjaz’ neravnomernosti deformacii s koefficientom kontaktnogo trenija pri plasticheskoy osadke zagotovok, Problemy tribologii’ (Problems of Tribology), 2009, No 1, pp. 91-96
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Published
2014-05-08
How to Cite
Кухарь, В. (2014). The balance of dismissed volume during upsetting of billet with account of conditions of deformation. Problems of Tribology, 71(1), 38–45. Retrieved from https://tribology.khnu.km.ua/index.php/ProbTrib/article/view/88
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