Method of casting parts using heat reservoir, gating used by such method, and casting made thereby

摘要

A casting, mold and method for producing a casting are disclosed. The casting may have an area of small thermal mass and an area of large thermal mass. The method includes providing a casting having a work product and an appendage engaged to, and suspended over, the work product between the area of small thermal mass and the area of large thermal mass, and controllably cooling the work product using the appendage.

主权项

1. A method of casting a work product, comprising:
forming a pattern in the shape of a casting; coating the pattern with an investment material; removing the pattern from the investment material to form a mold that includes a cavity in the shape of the work product and a cavity in the shape of a sacrificial appendage; pouring molten metal into the mold cavities; producing the casting having the work product and the sacrificial appendage extending from, and suspended over, the work product in an arcuate orientation and cantilevered therefrom, the work product comprising an area of small thermal mass and an area of large thermal mass, the area of small thermal mass is a midspan of a combustor panel, the area of large thermal mass is a stud of the combustor panel; positioning the sacrificial appendage between the area of small thermal mass and the area of large thermal mass, the sacrificial appendage cantilevered over the midspan; and controllably cooling the work product using the sacrificial appendage.