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Cutting AHSS materials in the non normal direction of the sheet material

Per Jonsson (Institutionen för material- och tillverkningsteknik, Tillverkningsteknik) ; Kenneth Kjellsson ; Niclas Stenberg ; Daniel Wiklund (Institutionen för material- och tillverkningsteknik, Tillverkningsteknik)
Proceedings of 2nd Swedish Production Symposium p. 77-83. (2008)
[Konferensbidrag, refereegranskat]

The properties of cutting AHSS (Advance High Strength Steel) materials in the non normal direction of the sheet material are investigated both trough semi industrial testing and FE simulations. Cutting angles of 25°, 35°, 45° and 60° with a clearance of 4%, 8%, 12% and 16% are evaluated. Cast iron to wrought steel are tested against sheet materials ranging from HSS (High Strength Steel) to UHSS (Ultra High strength steel). Two versions of the geometry on the lower cutting edge have been tested, a traditional geometry and a 1,5mm shelf geometry. Side force measurements indicate that for the traditional cutting edge geometry on the lower die, the side force increases with an increased angle. For the shelf geometry this side force is reduced, especially for the higher angles. Simulated results correlate well to the test results. The shelf geometry also reduces the sharpness off the cut edge profile compared to the traditional geometry. During a few tests, fracture wear and chipping occurred on the upper cutting edge, successful actions were made to decrease the risk for fracture wear.

Nyckelord: Trimming, Cutting, Blanking, Wear, Die, Sheet metal, Laser hardening, FEM

Denna post skapades 2010-11-03. Senast ändrad 2010-12-21.
CPL Pubid: 128563


Institutioner (Chalmers)

Institutionen för material- och tillverkningsteknik, Tillverkningsteknik (2005-2017)



Chalmers infrastruktur

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Sheet metal trimming dies – characterisation methods of geometry and surface topography and the influence on wear