Article metrics

  • citations in SCindeks: [1]
  • citations in CrossRef:[1]
  • citations in Google Scholar:[=>]
  • visits in previous 30 days:9
  • full-text downloads in 30 days:4
article: 8 from 34  
Back back to result list
FME Transactions
2017, vol. 45, iss. 4, pp. 590-596
article language: English
document type: unclassified
Application of regression method for determining the die land dimensions based on data from industry
Univeristy of Niš, Faculty of Mechanical Engineering



The research of modern non-conventional technologies application in manufacturing companies with the aim of increase efficiency of use, product quality, reduce of costs and save energy and materials (MESTD - 35034)


The closed-die forging is a quite complicated forming process that is affected by a large number of forming factors (such as dimensions and shape complexity of the forged part, mass and shape of raw material (billet), forging die geometry, material properties etc.). In the forging process/die design the choice of the appropriate die land geometry is a difficult and very important task. In this study, the new equations for determining the die land dimensions have been developed by using the regression analysis. The input-output data set was constructed on the basis of the samples from industry. The validation of derived equations was carried out with a case study. These equations can be used for any kind of an axisymmetrical forged part. Proposed equations offer forging process/die designers the possibility to choose the die land dimensions more precisely. In that way, the reduction of the expensive and time consuming trial-and-error procedure in industrial practice is real and possible. On the other hand, determining the proper (optimal) dimensions of die land leads to a successful forging process. Consequently, less mass of raw material, reduction of forging load/work, less die wear as well as best quality of forging parts should be achieved.


closed-die forging; die land; regression analysis


Arsić, D., i dr. (2015) Impact of the hard facing technology and the filler metal on tribological characteristics of the hard faced forging dies. Tehnički vjesnik / Technical Gazette, Vol. 22, No 5, pp. 1353-1358
Bramley, A.N., Mynors, D.J. (2000) The use of forging simulation tools. Materials & Design, 21(4): 279-286
Gronostajski, Z., Kaszuba, M., Polak, S., Zwierzchowski, M., Niechajowicz, A., Hawryluk, M. (2016) The failure mechanisms of hot forging dies. Materials Science and Engineering: A, 657: 147-160
Iamtanomchai, R., Bland, S. (2015) Study of wear and life enhancement of hot forging dies using finite element analysis. in: World Congress on Engineering, London, Proceedings, Vol. II
Kalpakjian, S., Schmid, S.R. (2006) Manufacturing Engineering and Technology. Upper Saddle River: Pearson Education
Langner, J., Stonis, M., Behrens, B. (2015) Experimental investigation of a variable flash gap regarding material flow and influence of trigger forces. Production Engineering, 9(3): 289-297
Lazarević, A., Marinković, V., Lazarevic, D. (2010) Expanded non-linear mathematical models in the theory of experimental design. in: RaDMI, pp. 304-310
Marinković, V. (2009) Application of Artificial Neural Network for Modeling the Flash Land Dimensions in the Forging Dies. Strojniski Vestnik - Journal of Mechanical Engineering, vol. 55, br. 1, str. 64-75
Marinković, V. (2011) Predviđanje napona tečenja legiranog čelika pri toplom deformisanju primenom različitih matematičkih modela i planiranja eksperimenta # Prediction of flow stress of alloyed steel in hot forming by applying different mathematical models and design of. Journal for Technology of Plasticity, vol. 36, br. 2, str. 71-86
Montgomery, D.C. (2005) Design and analysis of experiments. New York: John Wiley & Sons
Radev, R. (2013) Numerička istraživanja potreba za pripremnim operacijama za slučaj toplog kovanja aksijalno simetričnih otkovaka # Numerical investigations regarding necessity of preforming steps for hot closed die forging of axisymmetrical parts. Journal for Technology of Plasticity, vol. 38, br. 2, str. 125-131
Samołyk, G., Pater, Z. (2005) Use of SLFET for design of flash gap with V-notched lands in a closed-die forging. Journal of Materials Processing Technology, 162-163: 558-563
Sedighi, M., Pourbashiri, M. (2014) Variable gutter technique as a novel method to reduce waste material in closed die-forging process. Journal of Mechanical Science and Technology, 28(12): 5129-5134
Semenov, E.I. (1992) Forging and bulk forming. Moscow: Vishaja shkola, in Russian
Sleeckx, E., Kruth, J.P. (1992) Review of flash design rules for closed-die forgings. Journal of Materials Processing Technology, 31(1-2): 119-134
Spur, G., Schmoeckel, D. (1984) Handbuch der Fertigungstechnik, Umformen. Wien - München: Carl Hanser Verlag, in German
Teterin, G.P., Polukhin, P.I. (1979) Basics of optimization and automatization of the technological processes design in hot bulk stamping. Moscow: Mashinostroenie, in Russian
Tomov, B., Radev, R., Gagov, V. (2004) Influence of flash design upon process parameters of hot die forging. Journal of Materials Processing Technology, 157-158: 620-623
Vazquez, V., Altan, T. (2000) New concepts in die design - physical and computer modeling applications. Journal of Materials Processing Technology, 98(2): 212-223