• HSM
  • HSM
  • 热带轧机


 

 


Defect Catalog Extract

Damage

Alternative term: Lap

Appearance: Areas of strong material
imprint forming hills or craters.

Hole

Alternative term: Massive rupture

Appearance: Opening, which completely penetrates the strip. It may occur in conjunction with other defects, e.g. damage.

 


Scratch

Alternative terms: Groove, Gouge.

Appearance: Line-type defect, which runs longitudinal to the rolling direction.

Shell

Alternative terms: Seam, Sliver.

Appearance: Irregular, flaky overlapping material permeated with non-metallic inclusions.

 


M-Defect

Alternative terms: M-shaped Tongues,
Slab Defect

Appearance: M-shaped shell.

Edge Crack

Alternative term: Edge Fault

Appearance: Discontinuations of material from surface to surface at strip edges.

 


Rolled-In Dirt

Alternative terms: Rolled-in extraneous matter, Splinters

Appearance: Surface defects due to
rolling-in of extraneous metallic or
non-metallic material of any shape.

Longitudinal Crack

Appearance: Line-type defect that runs longitudinal to the rolling direction.

 


Slab Edge

Appearance: Line-type defect, which runs longitudinal to the rolling direction.

Heavy Scale

Alternative term: Rolled-in Primary Scale.

Appearance: Heavy scale appears as massively rolled-in scale on a larger surface, either spot like, streak like or section like.

 


Medium Scale (Scale Pits)

Alternative terms: Rolled-in Secondary Scale, Scale Stippling

Appearance: Scale pits are rolled-in secondary scale particles distributed
randomly through-out the strip,
characterized by dark spots followed
by dark tails.

Periodic Defect (Roll Mark)

Alternative terms: Imprint, Indentation.

Appearance: Roll marks occur as indentations on the top or bottom of the strip.

 


Contact


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52076 Aachen
Germany
tel: +49 (2408) 92 700 - 0
fax: +49 (2408) 92 700 - 500
info@isravision.com 


Application Examples


Customer Examples

  • Algoma Steel
  • Arcelor
  • Baosteel
  • Corus
  • CSC
  • Duferco
  • Erdemir
  • Hadeed
  • JFE
  • Mittal
  • Mobarakeh Steel
  • Nippon Steel Corp
  • Nucor
  • POSCO
  • Riva
  • Ruuki
  • Salzgitter
  • SSAB
  • Taiyuan Steel Engineering
  • ThyssenKrupp Stahl
  • WISCO