Defect Catalog Extract
Alternative term: Massive rupture
Appearance: Discontinuities of material between top- and bottom-surface. Often surrounded by folds and/or laminations.
Alternative terms: Edge Crack, Edge Break
Appearance: Discontinuations of material from surface to surface at strip edges.
Alternative terms: Pinch, Pinch Tree, Feather
Appearance: Linear markings on the strip of single or periodic occurrences, which do not run parallel to the rolling direction.
Alternative terms: Seam, Sliver, Lamination, Blister, Scab
Appearance: Irregular, flaky; sometimes overlapping material, which can contain non-metallic inclusions and have a bright and/or dark appearance.
Appearance: Slips are the result of mechanical damage to the surface and usually appear in clusters.
Appearance: Stickers are the result of flowing lines transverse to the rolling direction. They appear as a more or less pronounced curved shape.
Appearance: Single spots, mostly bright. Normally no indentation.
Appearance: From stains over big areas to downweb lines. Mostly dark.
Appearance: Welds occur always at the end of the strip.
Alternative Term: Salt and Pepper
Appearance: Residual scale has not been completely removed by pickling and is rolled into the surface.
Appearance: Stains are residues on the strip surface. They appear in all thinkable forms and sizes.
Appearance: Imprints are small dents, which recur in general periodically along the strip transfer axis. They occur as spots (bright/dark).