TY  - JOUR
T1  - SOĞUK DÖVME KALIPLARINDA ÖMÜR ARTIŞI ELDE ETMEK İÇİN BASKIN HASAR MEKANİZMASININ BELİRLENMESİ
TT  - Determination of Effective Failure Mechanism to Improve Tool Life of Cold Forging Dies
AU  - Toparli, M. Burak
PY  - 2019
DA  - August
Y2  - 2019
DO  - 10.17482/uumfd.507586
JF  - Uludağ Üniversitesi Mühendislik Fakültesi Dergisi
JO  - UUJFE
PB  - Bursa Uludağ Üniversitesi
WT  - DergiPark
SN  - 2148-4155
SP  - 157
EP  - 172
VL  - 24
IS  - 2
LA  - tr
AB  - Buçalışma kapsamında soğuk dövme yöntemiyle üretilen M10x16 konik kafa T50 soketli bağlantı elemanınınüretiminde kullanılan soğuk dövme kalıpları ele alınmıştır. Üretim hattında düşükçevrimde kırıldığı tespit edilen zımba adaptörü için detaylı çalışmalar yürütülmüştür.Üretimden alınan hasarlı kalıplar incelenmiş ve sonlu elemanlar yöntemikullanılarak şekillenme ve kalıp analizi simülasyonları gerçekleştirilmiştir. İlgiliçalışmalar göz önünde bulundurularak kalıp tasarımı revize edilmiş ve kalıpömründe yaklaşık 20 kat iyileşme elde edilmiştir. Revize edilen ve üretimdekullanılmış hasarlı kalıplar için incelemeler tekrarlanmış ve baskın hasarmekanizmasının değiştiği tespit edilmiştir. Yapılan çalışmalar kapsamında, soğukdövme kalıplarında ömür artışı elde edilmesi için baskın hasar mekanizmasınınortaya çıkarılması ve karşı tedbir alınması gerektiği ve bu döngünün hedeflenenkalıp ömrü elde edilene kadar devam edilmesi gerektiği ortaya konmuştur.
KW  - Soğuk dövme
KW  - hasar mekanizmalarının incelenmesi
KW  - sonlu elemanlar yöntemi
KW  - kalıp gerilme analizi
N2  - In this study, production tools of cold forged M10x16 conichead fasteners with T50 socket were investigated. Punch adapter, one of theproduction tools of the investigated fastener, was examined due to earlyfailure observed during production. Failed punch adapters were examined andfinite element simulations were carried out. Based on the detailed examination,the design of the punch adaptor was revised and approximately 20 times lifeenhancement was achieved. The failed punch adaptor after design improvement wasre-investigated and it was shown that the effective failure mechanism acting onthe punch adaptor was changed. According to investigations carried out in thisstudy, it was shown that tool life enhancement could be obtained by determiningthe effective failure mechanism and applying countermeasures. This procedurehas to be carried out until the target service life is achieved.
CR  - 1.	Alimi, A., J. Fajoui, M. Kchaou, S. Branchu, R. Elleuch and F. Jacquemin (2016) Multi-scale hot working tool damage (X40CrMoV5-1) analysis in relation to the forging process, Engineering Failure Analysis, 62, 142-155. DOI: https://doi.org/10.1016/j.engfailanal.2015.11.031.
CR  - 2.	Altan, T. and M. Knoerr (1992) Application of the 2D finite element method to simulation of cold-forging processes, Journal of Materials Processing Technology, 35(3), 275-302. DOI: https://doi.org/10.1016/0924-0136(92)90323-K.
CR  - 3.	Behrens, B. A. (2008) Finite element analysis of die wear in hot forging processes, CIRP Annals, 57(1), 305-308. DOI: https://doi.org/10.1016/j.cirp.2008.03.087.
CR  - 4.	Behrens, B. A., A. Bouguecha, M. Vucetic, M. Bonhage and I. Y. Malik (2016) Numerical Investigation for the Design of a Hot Forging Die with Integrated Cooling Channels, Procedia Technology, 26, 51-58. DOI: https://doi.org/10.1016/j.protcy.2016.08.008.
CR  - 5.	Chang, S.-H., S.-C. Lee and T.-P. Tang (2008) Effect of Shot Peening Treatment on Forging Die Life, MATERIALS TRANSACTIONS, 49(3), 619-623. DOI: 10.2320/matertrans.MER2007622.
CR  - 6.	Kim, D. H., H. C. Lee, B. M. Kim and K. H. Kim (2005) Estimation of die service life against plastic deformation and wear during hot forging processes, Journal of Materials Processing Technology, 166(3), 372-380. DOI: https://doi.org/10.1016/j.jmatprotec.2004.07.103.
CR  - 7.	Knoerr, M., K. Lange and T. Altan (1994) Fatigue failure of cold forging tooling: causes and possible solutions through fatigue analysis, Journal of Materials Processing Technology, 46(1), 57-71. DOI: https://doi.org/10.1016/0924-0136(94)90102-3.
CR  - 8.	Lee, R. S. and J. L. Jou (2003) Application of numerical simulation for wear analysis of warm forging die, Journal of Materials Processing Technology, 140(1), 43-48. DOI: https://doi.org/10.1016/S0924-0136(03)00723-4.
CR  - 9.	Luong, H. and M. R. Hill (2009) The effects of laser peening and shot peening on high cycle fatigue in 7050-T7451 aluminum alloy, Materials Science and Engineering: A, 527(3), 699-707.
CR  - 10.	McCormack, C. and J. Monaghan (2001) A finite element analysis of cold-forging dies using two- and three-dimensional models, Journal of Materials Processing Technology, 118(1), 286-292. DOI: https://doi.org/10.1016/S0924-0136(01)00960-8.
CR  - 11.	Nagao, Y., M. Knoerr and T. Altan (1994) Improvement of tool life in cold forging of complex automotive parts, Journal of Materials Processing Technology, 46(1), 73-85. DOI: https://doi.org/10.1016/0924-0136(94)90103-1.
CR  - 12.	Peyre, P., R. Fabbro, P. Merrien and H. P. Lieurade (1996) Laser shock processing of aluminium alloys. Application to high cycle fatigue behaviour, Materials Science and Engineering A, 210(1-2), 102-113.
CR  - 13.	Summerville, E., K. Venkatesan and C. Subramanian (1995) Wear processes in hot forging press tools, Materials & Design, 16(5), 289-294. DOI: https://doi.org/10.1016/0261-3069(96)00010-6.
CR  - 14.	Toparli, M. B., S. Yurtdaş, E. Kılınçdemir and B. Tanrıkulu (2018) Residual Stresses: Friend or Foe?  FORGE Magazine.
CR  - 15.	Vazquez, V., D. Hannan and T. Altan (2000) Tool life in cold forging – an example of design improvement to increase service life, Journal of Materials Processing Technology, 98(1), 90-96. DOI: https://doi.org/10.1016/S0924-0136(99)00309-X.
CR  - 16.	Wagner, K., R. Völkl and U. Engel (2008) Tool life enhancement in cold forging by locally optimized surfaces, Journal of Materials Processing Technology, 201(1), 2-8. DOI: https://doi.org/10.1016/j.jmatprotec.2007.11.152.
CR  - 17.	Yurtdaş, S., M. B. Toparli, T. Damla, B. Tanrıkulu, E. Kılınçdemir, U. İnce and L. Aydın (2018) A Comparative Study of Metal Shaping Processes Between Forging and Machining The Most Recent Studies in Science and Art, H. Arapgirlioglu, A. Atik, S. Hiziroglu, R. Elliott and D. Atik. Ankara, Turkey, Gece Publishing. 2: 1462-1471.
UR  - https://doi.org/10.17482/uumfd.507586
L1  - http://dergipark.org.tr/tr/download/article-file/796091
ER  -