MANUFACTURE OF COMPONENT WITH CAVITY

摘要

A method for the manufacture of a component having an internal cavity is described. The method comprises; defining an external geometry of the component, defining a core geometry of the component; and using an additive layer manufacturing (ALM) method, building the component from a plurality of layers laid on a first plane. The core geometry is advantageously designed to suit manufacture of the component using an ALM method which involves local melting of powder in a powder bed to form the layers, permitting easy removal of excess powder from the internal cavity.

主权项

1. A method for the manufacture of a component having an internal cavity, the method comprising;
defining an external geometry of the component, defining a core geometry of the component; using an additive layer manufacturing (ALM) method, building the component from a plurality of layers laid on a first plane; wherein the core geometry includes a main core passage, a channel extending from a first end of the main core passage to an external surface of the component, the channel having an axis which is inclined at a first angle to an axis of the main core passage whereby to define an apex between walls of the channel and the main core passage which is obtuse, the channel axis further being inclined to the first plane; and the additive layer manufacturing method includes removing excess material from the main core passage via the channel.