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Misrun - Casting defects


Figure 1: Misrun.

Defect name: Misrun
Record No.: 710
Type of defect (Internal/Surface): Surface
Defect classification: Casting defects
Steel name: Steel
Steel composition in weight %: No data.
Note:  Misrun defect is a kind of incomplete casting defect, which causes the casting uncompleted. The edge of defect is round and smooth. When the metal is unable to fill the mould cavity completely and thus leaving unfilled portion called misrun. A cold shunt is called when two metal streams do not fuse together properly.

Possible causes
· Lack of fluidity in molten metal.
· Faulty design.
· Faulty gating.

Remedies
· Adjust proper pouring temperature.
· Modify design.
· Modify gating system.
Reference: Not shown in this demonstration version.