Patent ID: 9719358
Date: 2017-08-01
CPC Classifications: B22C,B22D,F01D,F05D

Claim:
1. A method for casting a turbine blade body, the method comprising; providing a mould defining the external geometry of the blade body; providing a core defining an internal geometry of the blade body, the core comprising a main body defining an internal chamber of the blade body and having a root end and a tip end and a plurality of pedestals defining an array of cooling channels extending from the internal chamber; casting a molten material between the mould and the core; and removing the core after the molten material has solidified, wherein the pedestals are arranged in a single row starting from the root end to the main body branching into multiple rows towards the tip end of the body, the single row having a line of symmetry and all of the multiple rows branching to either side of the line of symmetry, and one or more of the pedestals has a larger cross sectional area than the remaining pedestals and a pedestal of larger cross sectional area is positioned at or near the root end of the core body.