Page 104 - SARBAK İNGİLİZCE A4

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89
Conclusions
Object
Defect
Probable Origin
Surface cracks
Hot cracking / hot tearing
Surface bulge
Unclear. Defect in mould ?
Object 2– drain valve
Object – drain valve
Blue surface contamination
Fluoride compounds.
Contamination of surface
after machining.
Surface cracks
Shrinkage cavities directly
underneath the surface
Object 3– cone
Surface defect at center blindhole Shrinkage cavities