Steel surface quality inspection
Date:2018-03-06 View:3280 Tags:Steel surface quality inspection
① appearance inspection: artificial lighting conditions, standards, experience, rationality, tube rotation.
② non-destructive testing.
Ultrasonic testing of ultrasound.
More sensitive to various materials on surface cracks and internal defects, uniform material.
Electromagnetic induction eddy current testing.
Point defects (hole shape) are sensitive.
Magnetic flux leakage and magnetic Hill C. test
Magnetic detection of surface and near-surface defects in ferromagnetic materials.
Electromagnetic ultrasonic testing.
No coupling media is required and it can be applied to high temperature, high speed, rough surface dry pipe inspection.
penetrant test
Fluorescence, coloring, detection of steel surface defects.
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