Method for ultrasound shot-blasting of turbomachine parts
AssigneeSnecma
InventorAna Viguera Sancho
Life of this patent
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Abstract
The present invention relates to a method for ultrasound shot-blasting by means of a cloud of balls set in motion through contact with a sonotrode having one metallic surface including an area of difficult access. It is characterized in that the surface is that of a hook (20) axially restrained on a turbomachine blade including a groove (5) provided between the hook and the base of the blade, and the cloud of balls is contained in a chamber (25) encompassing said groove and said surface portion (7) outside said groove.
Claims9
A method for ultrasound shot-blasting, by means of a cloud of balls set in motion on contact with a sonotrode, a metal surface including an area difficult to access, characterized in that, the surface being that of a hook (20) axially retaining a turbomachine blade including a groove (5) provided between the hook and the foot of the blade and a surface portion (7) outside said groove, the cloud of balls is contained in a chamber (25) encompassing said groove and said surface portion (7) outside said groove.
The method as claimed the preceding claim, the amplitude of the movements of the balls being greater than or equal to 20 μm.
The method as claimed in one of the preceding claims, the treatment time being between 5 and 200 seconds.
The method as claimed in the preceding claim, the sonotrode forming a portion of the wall of the chamber (25).
The shot-blasting method as claimed in one of the preceding claims, the hooks being made with a material from the group comprising steel, titanium alloy or nickel-based superalloy or aluminums.
Dependencies are inferred from the claim text.