Scabbing or Delamination

Technical Support

Struggling with a specific casting defect or just need general technical support?

  • Faceted metal indentations or crusts with depression underneath and ceramic material in between; sometimes accompanied by a scab over the top

  • The delamination, or rough surface, is copy of a section of shell layers that separated from the shell; sometimes completely separating and others still attached

  • The shell layers that separated from the shell will also cause negative shell defects, if they are present in the shell during casting

  • The delamination can also remain attached to the shell and just curl inward, creating a negative valley or crevice in the casting

  • If metal penetrates behind this delamination that is still attached to the shell, a scab is formed

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