Due to their rough material surface, billets with a round cross-section require special test systems for the reliable detection of surface defects.
FOERSTER provides two automatic test systems for the testing of round billets which can be used to replace the personnel-intensive magnetic powder test (magnetic crack detection):
DEFECTOVISION: The surface test of the DEFECTOVISION is based on thermal flow thermography. By analyzing the thermal spread on the billet surface, even the smallest defects in the material surface can be detected and visualized. All but a few millimeters of the ends of the materials are also covered by the test.
CIRCOFLUX: The CIRCOFLUX test system uses the AC flux leakage method for testing as eddy current testing´would create too many disturbance signals due to the rough material surface. The CIRCOFLUX can be used for reliably testing round billets for longitudinal defects in the material surface.
MAGNATEST D-HZP: The MAGNATEST D-HZP test system performs automatic material identification checking and heat treatment checking in billets. The system uses the magnetic-inductive method.
In order to measure permeability and magnetic flux density, FOERSTER also provides the MAGNETOSCOP and MAGNETOMAT measuring instruments.
Products for Round
Crack testing with leakage flux
CIRCOFLUX Product Family
AC field leakage test of ferromagnetic steel bars
Identification checking and hardness / structure testing with magnetic-inductive method
Magneto-inductive testing of the material properties of semi-finished products such as tubes, wire, and rods
Crack testing with thermography
Inductive heat flux thermography for testing tubes, billets, rails, and profiles