Method for manufacturing of at least one part of an engine component by means of a blank of intumescent material

Patent metadata

Field	Value
Publication number	US-10487745-B2
Application number	US-201715697926-A
Country	US
Kind code	B2
Filing date	Sep 7, 2017
Priority date	Sep 9, 2016
Publication date	Nov 26, 2019
Grant date	Nov 26, 2019

Abstract

A method for manufacturing at least one part of an engine component by means of a blank from an intumescent material, which contains at least one fibrous matrix of organic and/or inorganic fibers and an intumescent substance, is provided. The blank is created from the intumescent material with a three-dimensional structure that is already adjusted with respect to its contours to the contours of the part of the engine component to be manufactured and the blank comprising the three-dimensional structure is impregnated through a hardening resin, and is connected, prior to or after the impregnation, to at least one support material that is also already adjusted to the contours of the part to be manufactured and at least partially forms the engine component together with the blank connected thereto.

First claim

The invention claimed is:

1. A method for manufacturing a part of an engine component, comprising:
providing a blank made from a batt of an intumescent material that contains at least one fibrous matrix that includes an intumescent substance and at least one chosen from organic fibers and inorganic fibers;
forming the blank from the intumescent material with a three-dimensional structure having contours adjusted with respect to contours of the part of the engine component;
impregnating the blank that comprises the three-dimensional structure with a curing resin and curing the resin to maintain the three-dimensional structure and to seal the intumescent material; and
prior to or after the impregnation, connecting the blank to a support material having contours also adjusted to the contours of the part of the engine component, the support material and blank connected thereto at least partially forming the engine component.

2. The method according to claim 1 , and further comprising performing at least one chosen from reshaping, separating and removing sections of the batt for creating the three-dimensional structure.

3. The method according to claim 1 , wherein sections of the batt are at least one chosen from sawn and woven together with at least one chosen from each other and with sections of a further intumescent material for creating the three-dimensional structure.

4. The method according to claim 1 , and further comprising manufacturing the blank with a molding tool which is adjusted to have contours corresponding to contours of the part of the engine component to be manufactured, and to which fibers for the fibrous matrix dispersed inside a dispersion attach.

5. The method according to claim 4 , and further comprising providing that the molding tool has a water-permeable grid structure or screen structure.

6. The method according to claim 4 , and further comprising immersing the molding tool in the dispersion.

7. The method according to claim 4 , and further comprising providing that the dispersion is an aqueous suspension that contains, the intumescent substance, a binding agent and the at least one chosen from the organic fibers and the inorganic fibers.

8. The method according to claim 1 , and further comprising:
stacking the blank and the support material on top of each other prior to the impregnation, and applying a pressure to compress at least the intumescent material of the blank, and
holding the intumescent material in a compressed shape and sealing off the intumescent material against entry of liquid through the curing resin.

9. The method according to claim 8 , and further comprising heating the blank and the support material up to at least a minimum temperature for the impregnation with the resin.

10. The method according to claim 9 , and further comprising applying the pressure to compress at least the intumescent material before the minimum temperature is reached.

11. The method according to claim 8 , and further comprising using an autoclave to apply the pressure to compress at least the intumescent material.

12. The method according to claim 1 , and further comprising providing that the blank from the intumescent material has a wall thickness of less than 4.2 mm.

13. The method according to claim 1 , and further comprising providing that a wall thickness of a layer formed from the intumescent material does not exceed 2.3 mm in the manufactured engine component.

14. The method according to claim 13 , and further comprising providing that the wall thickness is in a range of 0.4 mm to 1.5 mm.

Assignees

• Rolls Royce Deutschland Ltd & Co Kg

Inventors

• Kubisch Thomas
• Kaak Oliver

Classifications

• B32B5/26

  another layer {next to it} also being fibrous or filamentary {(relative arrangement of fibres or filaments of different layers B32B5/12)} · CPC title

• B32B27/06

  as the main or only constituent of a layer, {which is} next to another layer of {the same or of} a {different material (next to a layer of a particular substance B32B9/045; next to a bituminous or tarry layer B32B11/046; next to a water setting substance layer B32B13/12; next to a metal layer B32B15/08; next to a glass layer B32B17/10; next to a layer formed of natural mineral fibres or particles B32B19/045; next to a wood layer B32B21/08; next to a cellulosic plastic layer B32B23/08; next to a natural or synthetic rubber layer B32B25/08)} · CPC title

• F01D25/14

  Casings modified therefor (double casings F01D25/26) · CPC title

• B64D29/00

  Power-plant nacelles, fairings or cowlings · CPC title

• B32B2262/0269

  Aromatic polyamide fibres · CPC title