Knowing the steel grade and plate condition (hot rolled, normalized, et cetera) will help in being more accurate in describing the conditions. Conditions in first 2 photos (10-47-54 and 10-48-04) look like remants from scale patches, where the relatively light mill scale was rolled into the surface and then came off, leaving the mottled surface appearance. The last photo (22222) looks like rolled in scale, where heavier mill scale has been rolled into the plate surface leaving the surface imperfections, with some of the scale having "popped out" leaving depressions in the plate surface.
On Monday, September 14, 2015 at 3:38:50 AM UTC-4, Mehdi Vafakhah wrote:
-- On Monday, September 14, 2015 at 3:38:50 AM UTC-4, Mehdi Vafakhah wrote:
Dear expertsCould you help me to identify the these defect. ( attached pictures )or refer a guide document that provide me more information about hot rolling defects.best regards.
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