Method and casting core for forming a landing for welding a baffle inserted in an airfoil
AssigneeUnited Technologies Corporation
InventorTracy A. Propheter-Hinckley
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Abstract
A method and casting core for forming a landing for welding a baffle inserted into an airfoil are disclosed, wherein the baffle landing of the blade or vane is formed in investment casting by the casting core rather than by wax, reducing tolerances and variability in the location of the baffle inserted into the cooling cavity of airfoil when the baffle is welded to the baffle landing.
Claims18
A method of forming a first landing for welding a first baffle inserted into a cooling cavity of an airfoil comprising the steps of:
- forming a casting core having a first portion in the shape of the first landing;
- overmolding the casting core with wax to form a casting pattern having a first portion in the shape of the first landing;
- shelling the casting pattern with a shell;
- removing the casting pattern to form a void between the shell and the casting core;
- pouring metal into the void to surround the casting core;
- and
- removing the shell,
- wherein the first landing is formed by the first portion of the casting core in the shape of the first landing.
A method of forming a first landing for welding a first baffle inserted into a cooling cavity of an airfoil and a second landing for welding a second baffle inserted into the cooling cavity comprising the steps of:
- forming a casting core having a first portion in the shape of the first landing and a second portion in the shape of the second landing;
- overmolding the casting core with wax to form a casting pattern having a first portion in the shape of the first landing and a second portion in the shape of the second landing;
- shelling the casting pattern with a shell;
- removing the casting pattern to form a void between the shell and the casting core;
- pouring metal into the void to surround the casting core;
- and
- removing the shell,
- wherein the first landing is formed by the first portion of the casting core in the shape of the first landing and the second landing is formed by the second portion of the casting core in the shape of the second landing.
A casting core for forming a first landing for welding a first baffle inserted into a cooling cavity of an airfoil comprising:
- a first portion in the shape of the first landing.
Dependencies are inferred from the claim text.