Process of closing an opening in a component

摘要

A process for closing an opening in a surface of a component, and components formed thereby. The process entails forming a channel in the component surface so that the channel at least partially surrounds an opening at the component surface. An alloy is then deposited in the channel to form a crack-free deposit in the channel. A step is then machined that intersects the opening and is at least partially formed in the deposit. The step defines a recess that is at least partially surrounded by a peripheral portion of the deposit and has a surface recessed into the component surface. A cap is placed in the recess and welded to the peripheral portion of the deposit to define a weld joint that completely closes the opening. The surface of the weld joint is then machined to form a machined surface that is substantially flush with the component surface.

主权项

1. A process of closing an opening at a surface of a component formed of a first alloy, the process comprising:
forming a channel in the surface of the component, the channel at least partially surrounding the opening at the surface of the component; depositing a second alloy in the channel to form a crack-free deposit in the channel so that the deposit at least partially surrounds the opening, the second alloy having better weldability than the first alloy; machining a step that intersects the opening and a surface of the deposit and is at least partially formed in the deposit by removing a portion of the deposit within the channel, the step defining a recess that is at least partially surrounded by a peripheral portion of the deposit and has a machined recessed surface that is at least partially defined by the deposit and recessed into the surface of the component; placing a cap in the recess so as to cover the opening at the surface of the component; welding the cap to the peripheral portion of the deposit to define a weld joint that completely closes the opening, the weld joint having a surface formed in part by surfaces of the cap, a weldment surrounding the cap, and the peripheral portion of the deposit; and then machining the surface of the weld joint to form a machined surface that is at the surface of the component and defined by portions of the cap, the weldment, and the peripheral portion of the deposit.