The thickness of the coating of glass steel tank initiations how detection
During the test, a distance not less than 20mm the measured point edge or corner of the inner member. The probe shall be in vertical contact with the surface of the measuring point. The contact time should be kept from 1s to 2S, and the measured values displayed by the instrument shall be read and printed or recorded.
The instrument shall be calibrated using a standard sheet of the same nature as the base metal of the component under test, and may be calibrated with the coating to be applied. Switch off during testing and restart the instrument after calibration.
Two point calibration shall be adopted before pre test calibration. (zero and estimated thickness)
Before examination, the fire coating, dust, oil stain on the surface of test points should be removed.
1) the same component should be detected at 5, 3 each distance 50mm measuring point detection. The coating on the measuring point shall be in good condition with the steel.2) electromagnetic interference should be avoided when coating thickness gauge is used.3) the thickness of the anticorrosive coating shall be inspected after passing the appearance inspection.
