Method for treating a surface of a fibre composite component

Patent metadata

Field	Value
Publication number	US-11541508-B2
Application number	US-201816182918-A
Country	US
Kind code	B2
Filing date	Nov 7, 2018
Priority date	Nov 10, 2017
Publication date	Jan 3, 2023
Grant date	Jan 3, 2023

Abstract

A method for treating a surface of a fibre composite component, wherein an abrasive removal of the surface of the fibre composite component takes place by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle and a suction extraction of the removing agent and material removed by the removing agent takes place by an extraction nozzle arranged in the region of the feed nozzle.

First claim

The invention claimed is:

1. A method for treating a surface of a fibre composite component, the method comprising:
abrasively removing the surface of the fibre composite component by blasting a removing agent transported by a gaseous transporting fluid onto the surface of the fibre composite component by a feed nozzle, the blasting application through the feed nozzle taking place in a working space formed by a bell placed onto the surface of the fibre composite component, and the removing agent and the removed material being extracted from the working space by suction by an extraction nozzle, the bell having an abutting edge facing the surface of the fibre composite component, and a sealing device for sealing the working space with respect to the surface of the fibre composite component being arranged at the abutting edge, the working space being sealed with respect to a rear surface of the fibre composite component during the removal of an edge region of the surface of the fibre composite component, wherein the edge region of the surface extends along a side edge of the fiber composite component, and wherein the sealing device encloses the side edge of the fiber composite component, thereby abutting the surface and the rear surface of the fiber composite component; and
extracting the removing agent and material removed by the removing agent from the working space by suction by the extraction nozzle arranged in the region of the feed nozzle.

2. The method according to claim 1 , the fibre composite component extending in a longitudinal direction, the removal taking place in strips along the longitudinal direction, starting from the side edge of the fibre composite component.

3. The method according to claim 1 , the extraction nozzle surrounding the feed nozzle in an annular manner.

4. The method according to claim 1 , the feed nozzle being arranged at a first angle relative to the surface of the fibre composite component.

5. The method according to claim 4 , the extraction nozzle being arranged at a second angle relative to the surface of the fibre composite component and opposite the feed nozzle.

6. The method according to claim 1 , the transporting fluid being transported to the surface at a pressure of between 0.25 bar and 8 bar above ambient pressure.

7. The method according to claim 1 , glass granules, corundum granules or plastic granules being used as the removing agent.

8. The method according to claim 1 , the fibre composite component being formed by a structural component of an aircraft.

9. The method according to claim 8 , wherein the structural component is a stringer.

Assignees

• Premium Aerotec Gmbh

Inventors

• Gensewich Christian

Classifications

• B29C66/524

  Joining profiled elements · CPC title

• B24C7/0046

  the abrasive material being fed in a gaseous carrier · CPC title

• B29C66/71

  characterised by the composition of the plastics material of the parts to be joined (welding bar compositions B29C65/125) · CPC title

• B24C11/00

  Selection of abrasive materials {or additives} for abrasive blasts (polishing compositions C09G) · CPC title

• B29C66/1122

  Single lap to lap joints, i.e. overlap joints (B29C66/45, B29C66/472, B29C66/52272 take precedence) · CPC title