Pointed roll scratch - 1.8519
Treatment : quenched and tempered
Magnification : 100 : 1
Etching medium :
Sampling / Specification : transverse
Testing result :
pointed roll scratch 0,18 mm deep
Treatment : quenched and tempered
Magnification : 500 : 1
Etching medium :
Sampling / Specification : transverse
Testing result :
pointed roll scratch 0,18 mm deep
because of the heat treatment, the adjacent basic
material is
oxidized through oxygen diffusion at the defect
ending