Mould Life:

Generally Mould life for the permanent mould casting varies from 100 pours to as high as 3,00,000 pours. Factors, that influenced the life of a permanent mould, are like that:

• Higher pouring temperatures badly affect the mould life.
• Higher the weight of casting previous is the wear of mould.
• Severe and cooling and heating cycles give grow up to shorter mould life.
• Use of suitable mould coatings enhances mould life.
• Preheating of mould defend castings from thermal shock. This facilitates enhanced mould life.
• Gating design also effect the mould life. Poor gating causes excessive turbulence resulting in shortened mould life.