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Body line slivers - Hot rolled products - Rolling defects


Figure 1: Body line slivers.

Defect name: Body line slivers
Record No.: 3371
Type of defect (Internal/Surface): Surface
Defect classification: Rolling defects
Steel name: Steel
Steel composition in weight %: No data.
Note:  Star/longitudinal cracks on slabs (body) leading to sliver on hot roll strips.
Origin/root cause:
- Varying mould flux (heat extraction).
- Mould powder quality (viscosity).
- High casting speed.
Remedy/process control:
- Control of mould water.
- Use of high viscosity mould powder.
- Slower casting speeds.
Reference: Not shown in this demonstration version.