Reduced cross flow linking cavities and method of casting

An intermediate cast component comprising:

• a cast body comprising a first material;
• and
• a core within the cast body and comprising a second material that is susceptible to leaching, the core further comprising:
• a plurality of legs oriented to form a plurality of internal flow channels within the component;
• and
• a plurality of tie bars having a first tie bar end and a second tie bar end, the plurality of tie bars being coupled to at least two of the plurality of legs, at least one of the plurality of tie bars oriented to form a linking cavity, the configuration of the linking cavity being an obstruction to fluid communication between the plurality of internal flow channels, and wherein the linking cavity serves as an obstruction to fluid communication through the linking cavity, wherein at least one of:
• the plurality of legs further comprises at least two cavity obstructions, the at least two cavity obstructions having an upstream face and a downstream face opposite thereof, and wherein the first tie bar end confronts a first downstream face and the second tie bar end confronts a second downstream face or a second upstream face;
• at least one tie bar of the plurality of tie bars is formed as a coil;
• or
• the core comprises a first core material which is susceptible to a leaching process, wherein the core further comprises a second core material which is resistant to the leaching process, and wherein at least one tie bar of the plurality of tie bars having a second core material portion.

An intermediate cast component comprising:

• a cast body comprising a first material;
• and
• a core within the cast body and comprising a second material that is susceptible to leaching, the core further comprising:
• a plurality of legs oriented to form a plurality of internal flow channels within the component;
• and
• a plurality of tie bars having a first tie bar end and a second tie bar end opposite thereof, the plurality of tie bars being coupled to at least two of the plurality of legs, wherein at least one of the plurality of tie bars is oriented to form a linking cavity within the cast component between the plurality internal flow channels, and wherein a configuration of the linking cavity, serves as an obstruction to fluid communication through the linking cavity, wherein the linking cavity having a first diameter and a second diameter, the first diameter being greater than the second diameter, the second diameter establishing a constriction point within the linking cavity, a constriction point being located along the linking cavity at a point calculated to equalize a pressure at a linking cavity first end with a pressure at the linking cavity second end.

An intermediate cast component comprising:

• a cast body comprising a first material;
• and
• a core within the cast body and comprising a second material that is susceptible to leaching, the core further comprising:
• a plurality of legs oriented to form a plurality of internal flow channels within the component;
• and
• a plurality of tie bars having a first tie bar end and a second tie bar end opposite thereof, the plurality of tie bars being coupled to at least two of the plurality of legs, wherein at least one of the plurality of tie bars is oriented to form a linking cavity within the cast component between the plurality internal flow channels, and wherein a configuration of the linking cavity, serves as an obstruction to fluid communication through the linking cavity, wherein at least one tie bar of the plurality of tie bars is coupled to a first leg at an acute angle and is coupled to a second leg at an acute angle, the at least one tie bar comprising a plurality of bends.