A method for determining the edges crack sensitivity of a sheet metal material and apparatus for the production of a test piece from this sheet metal material

摘要

A method for determining the edges crack sensitivity of a sheet metal material at the center of a cutting edge (s) formed outer edge (k), comprising the steps of:– Providing a device (100) for the production of a test specimen (p) from the sheet metal material, wherein the apparatus (100) a cutting tool, with the at least one outer edge (k) to be tested as a cutting edge (s) with a defined cutting edge course can be produced and at least one heating device, with which the sheet metal material to be produced at least in the region of the cutting edge (s) is defined in advance can be heated so that it comprises;– Production of a test specimen (p) from the sheet metal material to be examined with this device (100), wherein at the specimen (p) to be tested at least one cutting edge (s) as the outer edge (k) in the case of a defined cutting temperature of the sheet metal material is produced;– defined deformation of the test specimen (p); and– Evaluation with respect to the edges of crack sensitivity.