Galling characterization for the pair composed by aluminium and M2 steel under dry and lubricated conditions by using load-scanning test method
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Galling or severe adhesive wear is a well-known failure mechanism caused by adhesion between sliding surfaces and is frequently found in sheet metal forming (SMF) operations. In SMF operations of materials such as aluminium, transfer and accumulation of sheet material to the stainless steel forming tool surface happens for certain conditions and can result in severe scratching of produced parts and toll steel damage. The aim of the present research work was to assess if load-scanning test rig can be used to evaluate and compare the galling resistance of different engineered surfaces, namely the material couple aluminium—M2 steel under dry and lubricated sliding conditions, for single- and multi-passing tests with increasing normal loads. In order to determine the galling resistance, a new test method resorting to a Computer Numerical Control (CNC) machine was used. It was found that the galling resistance increases through the use of the proper lubrication, as well as for low applied loads.
KeywordsGalling Sheet metal forming (SMF) Load scanning Adhesive wear
The author Luís M. Vilhena gratefully acknowledges the financial support of the Portuguese Foundation for Science and Technology (FCT), through the program QREN-POPH, reference: SFRH/BPD/92787/2013.
- 2.Gåård A (2008) Wear mechanisms in sheet metal forming—effects of tool microstructure, adhesion and temperature, Karlstad University Studies, DISSERTATION Karlstad University Studies. p. 46Google Scholar
- 7.Schey JA (1984) Tribology in metal working: friction, lubrication and wear. American Society for Metals, Metals ParkGoogle Scholar
- 8.Bay N, Nakamura T, Schmid S, Felder E, Montmitonnet P (Eds.), ICTMP 2010. In: International Conference on Tribology in Manufacturing Processes, MINES, Nice (2010), p. 5Google Scholar
- 10.Heikkila I, Slycke L, Sandberg O (2002) Influence of nitrogen alloying on galling properties of PM tool steels. In Proceedings of the Sixth International Tooling Conference on the Use of Tool Steels: Experience and Research, Karlstad, pp. 217–226Google Scholar
- 11.Fontalvo GA, Mitterer C (2002) Comparison of the tribological properties of different cold work tool steels at temperatures up to 250 °C. In: Proceedings of the Sixth International Tooling Conference on the Use of Tool Steels: Experience and Research, Karlstad, pp. 191–202Google Scholar
- 15.Podgornik B, Hogmark S, Sandberg O (2002) Hard PVD coatings and their perspectives in forming tool applications. In: Proceedings of the Sixth International Tooling Conference on the Use of Tool Steels: Experience and Research, Karlstad, pp. 881–891Google Scholar
- 16.Escher C, Henke T (2002) New trends in thin coatings for sheet-metal forming tools. In: Proceedings of the Sixth International Tooling Conference on the Use of Tool Steels: Experience and Research, Karlstad, pp. 771–784Google Scholar