International Journal of Automotive Technology

, Volume 18, Issue 4, pp 653–662 | Cite as

Application of the reverse 3D scanning method to evaluate the wear of forging tools divided on two selected areas

  • Zbigniew Gronostajski
  • Marek Hawryluk
  • Marcin Kaszuba
  • Paweł Widomski
  • Jacek Ziemba
Article

Abstract

This study is focused on tools used in the industrial hot forging process of a front wheel forging (eventually–gear wheel) manufactured for the automotive industry. Four different variants were applied for the tools: 2 die inserts were coated with two different hybrid layers (GN + PVD type), i.e. AlCrTiN and AlCrTiSiN, one insert was only nitrided, and one was pad welded, to improve tool durability. The tool wear was analysed and represented by the material degradation on the working surface, based on the 3D scanning and the material growth of the periodically collected forgings. Additionally, the scanned tools were divided into two areas, in which it was found, based on the reliminary analysis, that various degradation mechanisms are predominant. Microstructural and hardness measurements of the analyzed tools were also performed. Based on the results, it was found that, in the central part of the die insert (area A), thermo-mechanical fatigue and wear occurred, while in the area of the bridge insert (area B), only abrasive wear could be observed. For these areas (A and B), the loss of material was determined separately. In area A for the inserts with hybrid layer GN+AlCrTiSiN and gas nitrided, an intensive increase of wear took place, which was not observed for the pad welded and GN+AlCrTiN layer insert, for which, together with the increase of the forging number, a proportional growth of the loss of material occurred. In area B the weakest results were obtained for the insert with GN+AlCrTiSiN layer, while wear of other die inserts grew similar and proportional.

Key words

Forging process Destructive phenomena Durability of tools Scanning Hybrid layers 

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Copyright information

© The Korean Society of Automotive Engineers and Springer-Verlag Berlin Heidelberg 2017

Authors and Affiliations

  • Zbigniew Gronostajski
    • 1
  • Marek Hawryluk
    • 1
  • Marcin Kaszuba
    • 1
  • Paweł Widomski
    • 1
  • Jacek Ziemba
    • 1
  1. 1.The Chair of Metal Forming and MetrologyWroclaw University of Science and TechnologyWoclawPoland

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