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Crack - Forged bar - Forging defects


Figure 1: Crack in the forged bar.

Defect name: Crack
Record No.: 932
Type of defect (Internal/Surface): Surface
Defect classification: Forging defects
Steel name: Steel
Steel composition in weight %: No data.
Note:  
Causes: There are unclear fissure Steel material(steel ingot or billet) surface and bad subsurface bubble,Non-metallic inclusion etc. It will show up when hot rolling or forging steel.Crack in the forged bar - The temperature is too high or too low when hot rolling or forging steel.Crack in the forged bar.
- The inner stress is too big when it is straightening, especially for bad thermoplasticity steel.Crack in the forged bar.
- Unprofessional heat treatment.Crack in the forged bar.
Reference: Not shown in this demonstration version.