Explain the nature of defect in casting process and identify the defects through various NDT techniques.

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Mechanical Engineering

Explain the nature of defect in casting process and identify thedefects through various NDT techniques.

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Casting defects are undesired irregularities observed in the material manufactured from a metal casting process They are broadly classified into five categories depending on the cause of the deformation They are 1 Mold material defects 2 Pouring metal defects 3 Gas porosity defects 4 Shrinkage defects 5 Metallurgical defects Ive listed these defects in the order of occurrence of events in a casting process 1Mold material defects These defects occur when the properties of mold material being use are not suited for the specific casting process These include strengthGrain sizeretained moisture etc The defects include local solidificationcracks causing burrs etc 2 Pouring metal defectsThese defects occur due to adoption of wrong pouring techniques of the molten metal into the mold They include inclusionscold shuts and misruns 3 See Answer

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