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A new process for forging shafts with convex dies. Research into the stressed state

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A new manufacturing approach has been developed, which applies energy-saving processes for forging parts from ingots with convex dies without the need for upsetting the ingots. A new forging process provides a complete closing of an ingot’s axial defects. It has been established that an increase in convex die wedge angle and an increase in the degree of reduction result in the linear growth of (a) the level of compressive stress and (b) the intensity of the axial defect closure. The rounding of a “four-beam” workpiece with concave cross-section using flat dies leads to a decrease in deformation force by a factor of 1.5–3.0 times in comparison with rounding using cut dies. The effective geometric shapes of die tooling and efficient process parameters have been determined. The convex die angle has to be in the range of 160–170°. The depth of the concavity faces has to be on the order of 25 %. The tool for rounding has to be in the shape of flat dies. The method of workpiece positioning in the dies has to be “edgeways.” A new process for forging large shafts with a 2000-mm diameter using convex dies without an upsetting operation has been proposed, reported, verified, and industrially implemented. Industrial implementation of this new technology resulted in an increase in forging process productivity of 15–20 % and a decrease in heating number from 8 to 6 during the forging of large parts. Research results in the form of process and design recommendations have been successfully validated and implemented at a metal forming industrial workplace.

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  1. Naizabekov A., Lezhnev S., Krivtsova O., Tolkushkin A., Panin E. Simulation of the new technology of forging of blanks such as slabs and plates made of ferrous metals and alloys. J Achieve Mater Manuf Eng. Volume 62. Issure 2. 2014, P. 75–80.

  2. Baoguang S. A novel technique for reducing macrosegregation in heavy steel ingots / S. Baoguang, K. Xiuhong, L. Dianzhong // J Mater Proc Technol. – 2010. – № 210. – Р. 703–711. doi:10.1016/j.jmatprotec.2009.12.010

  3. Feng C, Cui Z, Liu M, Shang X, Sui D, Liu J (2016) Investigation on the void closure efficiency in cogging processes of the large ingot by using a 3-D void evolution model. J Mater Process Technol 237(2016):371–385. doi:10.1016/j.jmatprotec.2016.06.030

    Article  Google Scholar 

  4. Christiansen P, J H. Hattel, N Bay, P. A. F. Martins “Modelling of Damage during Hot Forging of Ingots”, The 5th International Conference, Czech Republic (2013).

  5. B Zhu Research on charging combination based on batch weight fit rule for energy saving in forging / Zhu Baiqing, Lu Haixing, Tong Yifei, Li Dongbo, Xia Yong // Mathematical Problems in Engineering. – Volume 2015. – Article ID 531756, 9 pages. doi:10.1155/2015/531756

  6. Nakasaki M. Application of hydrostatic integration parameter for free-forging and rolling / M. Nakasaki, I. Takasu, H. Utsunomiya // J. Mater. Process. Technol. – 2006. – № 177. – Р. 521–524. doi:10.1016/j.jmatprotec.2006.04.102

  7. Kim YD, Cho JR, Bae WB (2011) Efficient forging process to improve the closing effect of the inner void on an ultra-large ingot. J Mater Process Technol 211(2011):1005–1013. doi:10.1016/j.jmatprotec.2011.01.001

    Article  Google Scholar 

  8. Chen K, Yang Y, Shao G, Liu K (2012) Strain function analysis method for void closure in the forging process of the large-sized steel ingot. Comp Mater Sci 51(1):72–77. doi:10.1016/j.commatsci.2011.07.011

    Article  Google Scholar 

  9. Lee YS, Lee SU, Van Tyne CJ, Joo BD, Moon YH (2011) Internal void closure during the forging of large cast ingots using a simulation approach. J Mater Process Tech 211(6):1136–1145. doi:10.1016/j.jmatprotec.2011.01.017

    Article  Google Scholar 

  10. Erman E. Physical modeling of the upsetting process in open-die press forging / E. Erman, N. M. Medei, A. R. Roesch, D. C. Shah // J. Mech. Working Tech. – 1989. – № 19. – Р. 195–210. doi:10.1016/0378-3804(89)90004-1

  11. Mitani Y. Analysis of rotor shaft forging by rigid-plastic finite element method / Y. Mitani, V. Mendoza, K. Osakada // J. Mater. Process. Technol. – 1991. – № 27. – Р. 137–149. doi:10.1016/0924-0136(91)90049-K

  12. Fukui Y. Analysis of forging effect and closing of internal cavities in free forging by rigid-plastic finite element method / Y. Fukui, J. Yonezawa, Y. Yamaguchi, A. Nagata, O. Tsuda // J. Jpn. Soc. Technol. Plast. – 1980. – № 21. – Р 975–982.

  13. Zhang ZJ, Dai GZ, Wu SN, Dong LX, Liu LL (2009) Simulation of 42CrMo steel billet upsetting and its defects analyses during forming process based on the software DEFORM-3D. Mater Sci Eng A 499(1–2):49–52. doi:10.1016/j.msea.2007.11.135

    Article  Google Scholar 

  14. Markov O. E. Development of a new process for forging plates using intensive plastic deformation / O. E. Markov, A. V. Perig, M. A. Markova, V. N. Zlygoriev // The International Journal of Advanced Manufacturing. – 2016.– Print ISSN: 0268–3768 (print version); Online ISSN: 1433–3015 (electronic version); Journal no. 170; DOI: 10.1007/s00170–015–8217-5.

  15. Wang M, Li D, Wang F, Zang X, Li X, Xiao H, Du F, Zhang FC, Jiang Z (2016) Analysis of laminated crack defect in the upsetting process of heavy disk-shaped forgings. Eng Fail Anal 59:197–210. doi:10.1016/j.engfailanal.2015.10.005

    Article  Google Scholar 

  16. Saby M, Bouchard P-O, Bernacki M (2015) A geometry-dependent model for void closure in hot metal forming. Finite Elem Anal Des 105:63–78. doi:10.1016/j.finel.2015.07.003

    Article  Google Scholar 

  17. Dudra SP, Im YT (1990) Analysis of void closure in open-die forging. Int J Mach Tools Manuf 30:65–75. doi:10.1016/0890-6955(90)90042-H

    Article  Google Scholar 

  18. Choi SK, Chun MS, Van Tyne CJ, Moon YH (2006) Optimization of open die forging of round shapes using FEM analysis. J Mater Process Technol 172:88–95. doi:10.1016/j.jmatprotec.2005.09.010

    Article  Google Scholar 

  19. Kakimoto H, Arikawa T, Takahashi Y, Tanaka T, Imaida Y (2010) Development of forging process design to close internal voids. J Mater Process Tech 210(3):415–422. doi:10.1016/j.jmatprotec.2009.09.022

    Article  Google Scholar 

  20. Chen M-S, Lin YC (2013) Numerical simulation and experimental verification of void evolution inside large forgings during hot working. Int J Plast 49(2013):53–70. doi:10.1016/j.ijplas.2013.02.017

    Article  Google Scholar 

  21. Zhang X-X, Cui Z-S, Chen W, Li Y (2009) A criterion for void closure in large ingots during hot forging. J Mater Process Technol 209(2009):1950–1959. doi:10.1016/j.jmatprotec.2008.04.051

    Article  Google Scholar 

  22. J. Fluhrer, Deform 3D user’s manual version 6.0, Scientific Forming Technologies Corporation, Columbus, OH (2006).

  23. Markov O. E. Development of energy-saving technological process of shafts forging weighting more than 100 tons without ingot upsetting / O. E. Markov, M. V. Oleshko., V. I. Mishina // Metalurgical and Mining Industry. – Dnepropetrovsk, 2011. – Vol. 3, № 7. – P. 87–90.

  24. Markov OE (2012) Forging of large pieces by tapered faces. Steel in Translation 42(12):808–810. doi:10.3103/S0967091212120054

    Article  Google Scholar 

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Correspondence to Alexander V. Perig.

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Markov, O.E., Perig, A.V., Zlygoriev, V.N. et al. A new process for forging shafts with convex dies. Research into the stressed state. Int J Adv Manuf Technol 90, 801–818 (2017).

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