DOI: 10.5176/2251-1857_M375
Authors: Mohammad Naseri, Yaser Tashakori and Mostafa Barzegari
Abstract:
Investment casting in vacuum is the accepted standard processing route for the manufacture of gas turbine components. The technique itself has good advantages in the production of quality components and the key benefits of accuracy, versatility and integrity. Optimization of the mechanical and physical properties of the ceramic shell will be fundamental to achieving these aims. This paper investigates effects of numbers of primary, intermediate and seal coats on the mechanical strength of ceramic mould by means of modulus of rupture test in green state. The results showed that intermediate and seal dip induce large increases in green strength.
Keywords:
component; gas turbine; Investment casting; ceramic mould; Green strength; MOR test; crack resistance.
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