PHYSICAL MODELING OF TECHNOLOGICAL CHARACTERISTICS AT STRETCH FORGING OF BILLETS WITH ROTATION IN COMBINED DIES

  • В.В. Кухар
  • О.В. Василевський

Abstract

The method of intensification of deformation of billet or ingot for reaching of effect of macro-shift deformations during stretch forging in combined dies is grounded. The experimental analysis of form changing of billets at different modes of hot stretch forging was executed by physical models from lead. The method of experimental research of technological characteristics is developed applied to new conditions of stretch forging of billets by hydraulic presses. The best technologi-cal modes as quantities of reduction and angles of rotation of billet around axe are founded for approximation work-piece cross-section to round shape and getting resource saving effect.

References

1. Sokolov L.M., Aliev I.S., Markov О.E., Аlieva L.І. Tekhnologija kuvannja, Kramatorsk, DDМА, 2011, 268 p.
2. Markov O. New technological process of shafts forging, New technologies and achievements in met-allurgy and materials engineering, Czestochowa, Quick-druk, 2012, pp. 414-418.
3. Kargin S.B., Markov O.E., Kukhar V.V. Teoreticheskij analiz naprjazhenno-deformirovannogo sos-tojanija slitka pri kovke na trekhlepestkovuju zagotovku, Obrabotka materialov davlenijem, sb.nauch.tr., Krama-torsk, DGMA, 2011, No 1(26), pp. 17-21.
4. Pat. JP3120591 Japan, MPK B 21 J 5/00, B 21 J 5/02, B 21 J 5/06, B 21 K 1/06 Method for forging round bar. Toshihiko Obata. Ishikawajima Harima Heavy Ind. Co. Ltd., No JP1992000253849, date of applica-tion 28.08.1992; published 20.10.2000.
5. Banaszek G., Szota P. A comprehensive numerical analysis of the effect of relative feed during the operation of stretch forging of large ingot in profiled anvils, J. Mater. Process. Technol., 2005, No 169, pp. 437-444.
6. Pat. JP02108429 Japan, MPK B 21 J 1/04, B 21 J 1/00 Cross forging method for ingot. Kiyomi Nan-ba. Nippon Stainless Steel Co. Ltd., No JP1988000263282, date of application 19.10.1988, published 20.04.1990.
7. Pat. JP2002102987 Japan, MPK B 21 J 5/00, B 21 J 1/04, B 21 J 13/02, B 21 J 13/06, B 21 J 1/00, B 21 J 13/00 Heat forging method for billet. Junpei Tajima. Sumitomo Metal Ind. Ltd., No JP2000000297348, date of application 28.09.2000, published 09.04.2002.
8. Vasilevskij O.V., Grushko A.V., Kukhar V.V. Issledovanije deformirovannogo sostojanija pokovok tipa valov pri kovke v kombinirovannyh bojkah, Obrabotka materialov davlenijem, sb.nauch.tr., Kramatorsk, DGMA, 2011, No 3(28), pp. 78-82.
9. Vasilevskij O.V., Grushko A.V., Kukhar V.V. Issledovanije vlijanija velichiny obzhatija na kine-maticheskije I energosilovyje kharakteristiki pri kovke cilindricheskih zagotovok v kombinirovannyh bojkah, Obrabotka materialov davlenijem, sb.nauch.tr., Kramatorsk, DGMA, 2012, No 3(32), pp. 44-48.
Published
2014-05-26
How to Cite
Кухар, В., & Василевський, О. (2014). PHYSICAL MODELING OF TECHNOLOGICAL CHARACTERISTICS AT STRETCH FORGING OF BILLETS WITH ROTATION IN COMBINED DIES. Problems of Tribology, 72(2), 80-86. Retrieved from http://tribology.khnu.km.ua/index.php/ProbTrib/article/view/115
Section
Articles