Defect Catalog Extract
Zinc Pot Fault
Alternative terms: Dross, Dross Pimple, Dross Striation, Dross Spot
Appearance: Particles and inclusions in coating: spots, stripes, area; elevation on surface; dark interruptions of the surface.
Alternative term: Dark Stripe
Appearance: Dark stripes in production orientation in all contrasts. From single event up to area appearance.
Alternative term: Grind
Appearance: May occur as a single stripe or a group of stripes over a large area. Bright or dark appearance.
Alternative term: Bare Spots
Appearance: Dark interruptions of surface to surface at strip edges. Single spots or irregular shaped areas.
Appearance: Single spot, elevation on surface.
Alternative term: Massive rupture
Appearance: Discontinuities of material between top- and bottom-surface. Often surrounded by folds and/or laminations.
Alternative terms: Roke, 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.
Alternative terms: Drop, Bug, Insect
Appearance: Spots, stripes, areas. Dark interruptions of surface.
Appearance: Mechanical damage, usually in clusters.
Alternative term: Not Alloyed
Appearance: Bright areas, mostly beginning at the coild edges, but also in the middle of the coil.
Appearance: Bright zigzag areas spread over the coil.
Appearance: Occurs on both sides of the strip. Streaky appearance, usually after line stops.