Affiliation:
1. University Constantin Brancusi of Targu-jiu
2. University Constantin Brancusi of Targu Jiu
Abstract
This paper presents the results of some research with different heat treatments for the steel OSC10 compared to steel 205Cr115 of which have made the cut punches, each one realizing 16,000 stampings in the same technology. A study was done on the wear of used tools stamping operations using the method of deviation from circularity. Due to the fact that the material of workpiece sheet has fibers orientated in the direction of lamination the cutting tools encounters resistance in a different manner on their circumference. In some portions the edges penetrate perpendicularly to the fiber, the cutting material poses a higher resistance and obtains more pronounced wear of the edges. On the other portions, the edges penetrate parallel with the fiber, in this case the material strength is low and provides a wear less pronounced.
Publisher
Trans Tech Publications, Ltd.
Reference7 articles.
1. N. Yu. Cherkasova, A. A. Shein, G. V. Antonenkova, E. S. Sotova, Study of mechanism and kinetics of wear of shearing dies from semi-heat-resistant steels in machining articles made from various structural materials, Journal of Friction and Wear. Volume 34, Issue 3 (2013).
2. A. Stancioiu, S. Sontea, Studies/investigations concerning the durability of the nitride cutting tools within the technological process of the punching/stamping, Vrnjacka Banja, Yugoslavia, Volume 2, 01-04 september 2002, pp.408-412.
3. A. M. Kharitonyuk, Heat treatment of punches for pressing watch cases, Metal Science and Heat Treatment. Volume 5, Issue 4 (1963) 234-235.
4. A. S. Muzhevika, F. G. Muratov, V. A. Litvinova, Effect of short-duration carbonitriding followed by tempering on the structure and properties of punches for cold extrusion, Metal Science and Heat Treatment. Volume 24, Issue 6 (1982) 396-399.
5. W. F. Hosford, R. M. Caddell, Metal forming, mechanics and metallurgy, Cambridge University Press, (2007).