FORMATION OF AN ABRADABLE COATING INSIDE A TURBOMACHINE HOUSING

Abstract

Tooling (20) for forming an abradable coating (18) in an aircraft turbomachine module (40), said module (40) comprising an annular stator housing (10) and a central rotor (42) movable inside the housing (10) about an axis (A), characterized in that it comprises a first part (70) which is fixed on the rotor (42), a second part (71) which includes at least a first transverse arm extending radially outwards and carrying spreading rollers (80), and a flywheel (82) centered on said axis (B) and configured to be turned manually by an operator for the purpose of rotating the tooling (20) and the rotor inside the housing (10), so that the spreading rollers (80) are able to spread a resin for the purpose of forming said coating (18). Figure for the abbreviation: Figure 3

Description

Title of the invention: FORMATION OF AN ABRADABLE COATING INSIDE A TURBO-MOACHINE HOUSING Technical field of the invention

[0001] The present invention relates in particular to a tool and a method for forming an abradable coating inside an annular housing of an aircraft tur-bomachine module. Technical background

[0002] A turbomachine includes at its upstream end (with reference to the flow of gases in the turbomachine) a blower comprising a blade wheel which is surrounded by a casing, called a retaining casing because of its function of retaining the blades in the event of their breakage.

[0003] As is known, the blades of a turbomachine are surrounded by a stator that carries an annular coating of abradable material. The coating extends around and at a short radial distance from the blades, which, during operation, can rub against the material and wear it down by friction. This optimizes the radial clearances between the blades and the surrounding stator, thus limiting gas leakage at the radially external tips or ends of the blades.

[0004] In the case of a retaining housing, the blower blades are surrounded by an abradable layer covering an internal annular surface of the housing. In the current technique, this abradable layer is obtained by spreading a polymerizable resin over the surface. This resin is manually hammered to remove as many air bubbles as possible and to adhere the resin to the housing. The finishing is done by calendering, which is performed by passing a shaped straightedge over the resin without any control over the applied force. Moreover, this calendering tends to exert a detachment force on the resin. It is therefore a manual operation that requires considerable expertise to acquire, which consequently makes it time-consuming and expensive to implement.

[0005] The Applicant has already proposed in application WO-A1-2016 / 203141 a device for coating a turbomachine housing, which includes means for depositing resin and means for spreading this resin. These spreading means include rollers. This device makes it possible to replace manual operations of the prior art with automated and therefore more easily reproducible operations. The device further includes means for unwinding a plastic film intended to be interposed between said rollers and the resin. The plastic film prevents the resin from adhering to the rollers and ensures a good surface finish (e.g., smooth and glossy) with an abradable coating.

[0006] This application also describes an installation comprising the device and a transport trolley having means for rotating the housing about a horizontal axis. The device is intended to be attached to the trolley, and the housing is moved in rotation about the horizontal axis so that the resin is deposited and spread within the housing, these steps being automated.

[0007] The Applicant has also already proposed in application FR-A1-3 048 018 a device for applying abradable material to a surface of a turbine housing. This device includes several guiding means and means for adjusting the position of a spreading roller.

[0008] The Applicant now proposes an improvement to these devices. The aims of this improvement are to simplify the formation of the coating and to guarantee the reproducibility of this formation. Summary of the invention

[0009] The invention thus proposes a tooling for forming an abradable coating in an aircraft turbomachine module, this module comprising an annular stator housing and a central rotor movable inside the housing around an axis, characterized in that it comprises:

[0010] - a first part which is configured to be centered and fixed on the rotor,

[0011] - a second part comprising at least one first transverse arm extending ra- dialy outwards and carrying spreading rollers, and

[0012] - a steering wheel centered on said axis and configured to be turned manually by a operator in order to rotate the tooling and rotor inside the housing, so that the spreading rollers are able to spread a resin for the formation of said coating.

[0013] As mentioned above, the abradable coating is obtained by spreading a resin that has been previously prepared, for example, by mixing two or more components. This resin is generally in the form of a paste and is deposited on the inner surface of the housing. The resin can be applied manually by an operator. As in the prior art, the resin is spread by rollers. According to the invention, the rollers are mounted on the tooling, which is rotated by means of a handwheel and thus directly by an operator. This operation is therefore not automated, as human intervention is essential to ensure good spreading quality. The tooling is fixed to the module's rotor and therefore rotates with this rotor inside the housing, which remains stationary.Unlike the previous technique, it is the rollers that are mobile around the same axis, and that is the . The module housing is fixed. It is simpler and more precise to use the housing as a fixed reference point and rotate the tooling with the module's rotor, ensuring good resin spreading and coating formation. The invention thus significantly simplifies the tooling, facilitates its use, and improves the final quality of the abradable coating.

[0014] The tooling according to the invention can be used to spread a resin and form an abradable coating from this resin inside any turbomachine housing. This could be, for example, but not limited to, a blade retention housing for a turbomachine fan.

[0015] The tooling according to the invention may comprise one or more of the following features, taken individually or in combination with each other:

[0016] - the first part comprises fastening hooks which are distributed around the axis and which are configured to cooperate with said rotor in order to ensure the tooling is fixed to the rotor;

[0017] - the first part comprises centering lugs which are distributed around the axis and which are configured to cooperate with said rotor in order to ensure the centering of the tooling on the rotor;

[0018] - the hooks and / or the legs are located on a circumference centered on said axis, which has a first diameter, and the flywheel has a second diameter which is greater than the first diameter;

[0019] - the first part comprises pins or support holes which are parallel audit axis;

[0020] - the tooling includes a second transverse arm which is diametrically opposite to the first arm relative to said axis, and which carries at least one counterweight;

[0021] - the tooling further comprises a lever for adjusting the radial position of said rollers opposite said axis;

[0022] The present invention also relates to an assembly comprising a tool as described above, with a transport trolley, this transport trolley comprising a frame, wheels fixed to the frame, a first space for housing said tool, and at least one support member for the tool in said first space so that the axis of the tool is horizontal.

[0023] The assembly according to the invention may comprise one or more of the following features, taken individually or in combination with each other:

[0024] - said support member comprises elements which are complementary to the pins or to the orifices and which are configured to cooperate by male-female engagement with these pawns or orifices;

[0025] - said support member comprises a fixed vertical upright, a plate which is a mobile mounting in vertical translation on this upright and which carries said elements, and a crank for adjusting the position of the plate on the upright;

[0026] - the assembly further includes a protective annular flange intended to protect said rotor, the transport trolley further comprising a second space for housing the flange, and at least one flange support element in this second space.

[0027] The present invention also relates to an installation for forming an abradable coating inside an aircraft turbomachine module, this installation comprising an assembly as described above, and an aircraft turbomachine module, this module comprising:

[0028] - a central rotor having an axis of rotation, and

[0029] - an annular stator housing that extends around the shaft and the hub, this housing comprising an internal annular surface on which a resin is intended to be spread by the rollers of said tooling for the purpose of forming the coating.

[0030] The present invention also relates to a method for forming an abradable coating in an annular housing of an aircraft turbomachine module by means of an installation as described above, in which it comprises:

[0031] - a step a) of moving said assembly towards the module,

[0032] - a step b) of aligning the tooling axis with the rotor axis,

[0033] - a step c) of fixing the first part of the tooling onto the rotor hub,

[0034] - a step d) of withdrawing the trolley from the module,

[0035] - a step e) of depositing resin onto the surface of the housing, this step being completed before one of the preceding steps,

[0036] - a step f) of manually rotating the tooling and rotor by an operator inside the crankcase, using the handwheel, the resin is spread with the rollers onto the surface of the crankcase.

[0037] - a step g) of supporting the tooling by the trolley,

[0038] - a step h) of disengaging the tooling from the rotor,

[0039] - a step i) of removing the tooling from the module using the trolley.

[0040] The method according to the invention may include one or more of the following features or subsequent steps, taken individually or in combination with each other:

[0041] - the process comprises, before step a), or between steps a) and b) or b) and c), a step of attaching the flange to the module hub;

[0042] - the process includes, between steps d) and e) or e) and f), an adjustment step of the radial position of the rollers relative to the rotor axis;

[0043] - step e) is carried out manually by an operator. Brief description of the figures

[0044] Other features and advantages will become apparent from the following description of a non-limiting embodiment of the invention with reference to the accompanying drawings in which:

[0045] [Fig-1] [Fig.1] is a schematic perspective view of an annular housing of a turbomachine, this casing having an internal abradable coating;

[0046] [Fig.2] [Fig.2] is a schematic half-view in axial section of the housing of the [Fig.l];

[0047] [Fig.3] [Fig.3] is a schematic perspective view of an installation according to the invention, this installation comprising a turbomachine module and an assembly comprising a transport trolley and a tooling for forming the abradable coating;

[0048] [Fig.4] [Fig.4] is a schematic side view of the installation of [Fig.3];

[0049] [Fig. 5] [Fig. 5] is a schematic perspective and larger scale view a detail of the tooling in [Fig.3] and shows spreading rollers;

[0050] [Fig.6] [Fig.6] is a schematic perspective view of the transport trolley of the [Fig.3];

[0051] [Fig.7] [Fig.7] is a schematic perspective view of the tooling of [Fig.3], and in particular of a rear face of this tooling;

[0052] [Fig.8] [Fig.8] is a schematic perspective view of the tooling of [Fig.3], and in particular of a front face of this tooling;

[0053] [Fig.9] [Fig.9] is a schematic perspective view of a detail of the tooling of the [Fig.3], and shows fixing and centering devices;

[0054] [Fig. 10] [Fig. 10] is a schematic perspective view of an annular flange for the assembly according to the invention

[0055] [Fig. 11] [Fig. 11] is a schematic perspective view of a detail of the flange of [Fig. 10] when mounted in the module;

[0056] [Fig. 12] [Fig. 12] is a schematic perspective view of the installation of [Fig. 3], and illustrates a step of a process according to the invention;

[0057] [Fig. 13] [Fig. 13] is a schematic front view of the tooling of [Fig. 3], and illustrates a step of a process according to the invention;

[0058] [Fig. 14] [Fig. 14] is a schematic perspective view of the tooling and part of the module of [Fig. 3], and illustrates a step of a process according to the invention;

[0059] [Fig. 15] [Fig. 15] is a schematic front view of the tooling and part of the module of [Fig. 3], and illustrates a step of a process according to the invention;

[0060] [Fig. 16] [Fig. 16] is a schematic perspective view of the tooling mounted on the module of [Fig. 3], and illustrates a step in a process according to the invention; and

[0061] [Fig. 17] [Fig. 17] is a schematic perspective view of the installation of [Fig.3], and illustrates a step of a process according to the invention. Detailed description of the invention

[0062] Reference is first made to Figures 1 and 2, which show an annular casing 10 of an aircraft turbomachine. Conventionally, a turbomachine comprises, from upstream to downstream in the direction of gas flow, a fan, at least one compressor, an annular combustion chamber, at least one turbine, and a combustion gas ejection nozzle.

[0063] The airflow through the blower is divided into a first airflow, called the primary flow or hot flow, which enters the compressor, to be compressed there, then burned in the chamber, before flowing into the turbine and being ejected into the nozzle, and a second flow, called the secondary flow or cold flow, which flows between the engine (comprising the compressor, the combustion chamber and the turbine) and a nacelle of the turbomachine.

[0064] The blower includes a wheel which rotates inside an annular housing such as that of [Fig.1], which is commonly called a retaining housing for the reasons mentioned above.

[0065] The annular housing 10 has a generally cylindrical shape with axis of revolution A. It includes an annular mounting flange 12 at each of its axial ends. These flanges 12 are used to fix the housing 10 to annular walls of the turbomachine nacelle. The housing 10 may further include annular stiffeners 14.

[0066] The housing 10 comprises a radially internal annular surface 16 covered with an abradable coating 18 in the form of a layer of predetermined thickness. This coating 18 is continuous over 360° and has an axial length or dimension, along axis A, which represents 20 to 40% of the length of the housing in the example shown. This coating 18 is located here near the upstream end of the housing 10 and is intended to extend opposite the tips of the blower wheel blades. The coating 18 is obtained by polymerizing a resin prepared from at least two components.

[0067] The present invention proposes a coating forming tool 20, this tool 20 being associated with a carriage 30 to form an assembly within the meaning of the invention, and the tool 20 and the carriage 30 being further associated with a turbomachine module 40 to form an installation within the meaning of the invention.

[0068] Figures 3 and following illustrate one embodiment of the tooling 20, the trolley 30, the assembly and the installation.

[0069] Figures 3 and 4 illustrate the installation as a whole, which therefore includes tooling 20, trolley 30 and module 40.

[0070] The turbomachine module 40 is a blower module in the example shown. This module 40 comprises a central rotor 42 which has an axis of rotation A and an annular housing 10 which extends around the axis A and the rotor 42. The rotor 42 can be guided relative to the stator and the housing 10 by suitable means such as bearings which are not shown.

[0071] The housing 10 is similar to that described above in relation to figures 1 and 2 and comprises an internal annular surface 16 covered by an abradable annular coating 18.

[0072] The module 40 is preferably kept raised away from the ground by a suitable means such as a hoist, so that its axis A is oriented horizontally.

[0073] The carriage 30 is visible alone in [Fig.6]. It comprises a frame 32, rollers 34 fixed to the frame, a first space El for housing the tooling 20, and at least one support member 36 for the tooling 20 in this first space El so that the axis B of the tooling 20 is horizontal.

[0074] The frame 32 includes a lower platform 32a to which the casters 34 are attached, and includes vertical uprights 32b, 32c attached to the platform 32a and at least one of which forms the support element 36 for the tooling 20. The trolley 30 further includes a bar 32d or handle for gripping and moving the trolley by an operator.

[0075] The upright 32b, which carries the tooling 20, is fixed and has a vertical orientation. It carries a plate 38, which is mounted for vertical translation on the upright 32b and which carries support elements 44 for the tooling 20. As can be seen in [Fig. 6], these elements 44 have horizontally oriented pins.

[0076] In the example shown, the plate 38 further includes locking elements 46 configured to cooperate with the tooling 20.

[0077] The upright 32 further includes a crank 48 for adjusting the position of the plate 38 on the upright 32b, and therefore the vertical position of the plate 38.

[0078] As can be seen in [Fig.3], the assembly according to the invention further includes an annular protective flange 50 intended to protect the rotor 42 of the module 40.

[0079] The flange 50 is shown alone in [Fig. 10] and comprises a disc with a hole in its center. The flange 50 has tabs 52 on the outer periphery of the disc, which are regularly distributed around the axis of revolution C of the disc and are movable in radial translation, as illustrated by the double arrow in [Fig. 11]. The radial position of each tab 52 on the disc is adjusted and held by screws and wing nuts 54, for example.

[0080] These tabs 52 allow the flange 50 to be fixed in the module 40 and on the rotor 42, as will be explained in more detail below.

[0081] The carriage 30 includes a second space E2 for housing the flange 50, and at least one member 56 for supporting the flange 50 in this second space E2. This member 56 includes vertical uprights 32c which carry hooks 58 for supporting the flange 50 in a position such that its axis of revolution C is substantially horizontal.

[0082] The tooling 20 includes a first part 70 which is configured to be centered and fixed on the rotor 42 of the module 40.

[0083] This first part 70 is more clearly visible in Figures 8 and 9 and preferably comprises:

[0084] - fastening hooks 72 which are distributed around the axis B and which are configured to cooperate with module 40, and in particular its rotor 42, in order to secure tooling 20 to module 40, and

[0085] - centering lugs 74 which are distributed around axis B and which are configured to cooperate with module 40, and in particular its rotor 42, in order to ensure the centering of tooling 20 on module 40 so that the two axes A and B are aligned.

[0086] The hooks 72 are located on a circumference centered on the axis B, which has a diameter DI and the legs 74 are located on a circumference centered on the axis B, which has a diameter Dl' which is greater than DI in the example shown.

[0087] As can be seen in [Fig. 15], the retaining hooks 72 are axially engaged inside the rotor 42 and are configured to hook onto the inner periphery of this rotor. [Fig. 14] shows that the centering tabs 74 cooperate with the outer periphery of the rotor 42 to ensure its centering.

[0088] The first part 70 further includes orifices 76 which extend parallel to the axis B and which serve to support the tooling 20. These orifices 76 are configured to cooperate by male-female engagement with the aforementioned pins 44 of the carriage 30, as illustrated in [Fig.9].

[0089] The tooling 20 includes a second part 71 which is fixed relative to the first part 70. This second part 71 of the tooling 20 is more clearly visible in [Fig.7] and preferably includes at least a first transverse arm 78 extending radially outwards from the axis B and carrying spreading rollers 80.

[0090] The tooling 20 further comprises a handwheel 82 centered on the axis B and configured to be manually manipulated by an operator in order to rotate the tooling 20 which is attached to the rotor 42, inside the housing 10.

[0091] In the example shown, the flywheel 82 has a diameter D2 which is greater than Dl and Dl'.

[0092] The rollers 80 are shown in detail in [Fig. 5] and were developed as part of another invention of the Applicant. The rollers 80 will therefore not described in more detail below and are comparable to those described in application WO-A1-2016 / 203141 or application FR-A1-3 048 018. The rollers 80 can be associated with scraping means, unwinding plastic film, cutting, etc., as can be seen in the drawing.

[0093] In the example shown, the rollers 80 are located at one radially external end of the arm 78. The radial position of the rollers 80 relative to the axis A, B is preferably adjusted by means of an adjusting lever 84, visible in particular in Figures 7, 8, and 13. This lever 84 can be moved from a stowed and non-functional position, in which it extends, for example, along one side of the tooling 20, to a deployed and functional position in which it extends radially outwards and can be manipulated by an operator. Actuating the lever 84 causes the rollers 80 to move along the arm 78 in a radial direction (see [Fig. 13]).

[0094] In the example shown, the tooling 20 further includes a second transverse arm 86 which is diametrically opposite to the first arm 78 with respect to the axis B, and which carries at least one counterweight 88.

[0095] The movement of the tooling 20 around the axis A, B causes the arms 78, 86 to rotate around this axis and inside the housing 10. The counterweight 88 compensates for the weight of the rollers 80 and allows the operator to manipulate the handwheel 82 without significant effort.

[0096] We will now describe an embodiment of a process according to the invention with reference to Figures 12 and following.

[0097] With reference to [Fig. 12], the process comprises the following steps:

[0098] - a step a) of moving the assembly formed by the carriage 30 and the tooling 20, and possibly flange 50, towards module 40, and

[0099] - a step b) of aligning the axis B of the tooling 20 with the axis A of the rotor 42.

[0100] Step a) is carried out manually by an operator who moves the trolley 30 using its wheels 34. Step b) is also carried out by the operator using the crank 48 of the tooling 20.

[0101] Between steps a) and b) or after step b), the method may include a step of fixing the flange 50 on the rotor 42. The rotor 42 passes through the center of the disc of the flange 50 and the tabs 52 are moved radially to bear radially inside the housing 10, which holds the flange 50 fixedly on the rotor 42 so that the axes A and C are aligned (see [Fig. 11]).

[0102] With reference to Figures 14 and 15, the process then comprises the following steps:

[0103] - a step c) of fixing part 70 of tooling 20 onto the rotor 42 of the module 40, as mentioned above, and

[0104] - a step d) of removing the carriage 30 vis-à-vis the module 40.

[0105] With regard to step d), it is then sufficient to unlock the carriage 30 vis-à-vis the tooling 20 with the elements 46, then pull the carriage on the opposite side of the module 40 so that the pins 44 of the carriage slide into the holes 76 of the tooling and are extracted from these holes (see figures 6 and 9).

[0106] The process further includes a step e) of depositing resin onto the surface 16 of the housing 10, preferably manually by an operator who has previously prepared the mixture of components for making this resin. This step can be carried out in advance.

[0107] The method preferably includes, between steps d) and e) or after step e), a step for adjusting the radial position of the rollers 80 relative to the axis A, B, as illustrated in [Fig. 13]. This allows the rollers 80 to be positioned precisely within the module 40 and with a predetermined radial clearance relative to the surface 16 of the housing. This clearance is determined according to the desired thickness of the coating 18 on the surface 16.

[0108] The process then includes a step f) of manually rotating the tooling 20 and the rotor 42 inside the housing 10 by an operator, using the handwheel 82, so as to spread the resin with the rollers 80 on the surface 16 of the housing 10.

[0109] The spreading of the resin on the surface 16 can be carried out over 360° or less.

[0110] At the end of the resin spreading, the process includes a step g) of supporting the tooling 20 by the carriage 30 which is illustrated in [Fig.17]. The carriage 30 is moved by the operator so as to align the pins 44 of the carriage 30 with the holes 76 of the tooling, then to engage the pins 44 in the holes 76.

[0111] The process then comprises:

[0112] - a step h) of disengaging the tooling 20 vis-à-vis the rotor 42, that is to say that the fixing hooks 72 are detached from the rotor 42, then

[0113] - a step i) of removing the tooling 20 and the assembly vis-à-vis the module 40, thanks to the trolley 30 operated by the operator.

[0114] The tooling 20 according to the invention can be used to form an abradable coating 18 in a housing during manufacturing or in a housing during maintenance, the latter having undergone prior removal of its worn abradable coating for example.

Claims

Demands

1. Tooling (20) for forming an abradable coating (18) in an aircraft turbomachine module (40), said module (40) comprising an annular stator housing (10) and a central rotor (42) movable within the housing (10) about an axis (A), characterized in that it comprises: - a first part (70) which is configured to be centered and fixed on the rotor (10), - a second part (71) which comprises at least one first transverse arm (78) extending radially outwards and carrying spreading rollers (80), and - a handwheel (82) centered on said axis (A) and configured to be manually rotated by an operator for the purpose of rotating the tooling (20) and the rotor within the housing (10), so that the spreading rollers (80) are capable of spreading a resin in view of the formation of said coating (18).

2. Tooling (20) according to claim 1, wherein the first part (70) comprises: - fixing hooks (72) which are distributed around the axis (B) and which are configured to cooperate with said rotor (42) in order to secure the tooling (20) to the rotor (42), and / or - centering tabs (74) which are distributed around the axis (A) and which are configured to cooperate with said rotor (42) in order to ensure the centering of the tooling (20) to the rotor (42).

3. Tooling (20) according to claim 2, wherein the hooks (72) and / or the lugs (74) are located on a circumference centered on said axis (A), which has a first diameter (Dl, DI'), and the handwheel (82) has a second diameter (D2) which is greater than the first diameter (Dl, Dl').

4. Tooling (20) according to any one of the preceding claims, wherein the first part (70) comprises support pins or holes (76) which are parallel to said axis (A).

5. Tooling (20) according to any one of the preceding claims, wherein it comprises a second transverse arm (86) which is diametrically opposed to the first arm (78) with respect to said axis (A), and which carries at least one counterweight (88).

6. Tooling (20) according to any one of the preceding claims, wherein it further comprises a lever (84) for adjusting the radial position of said rollers (80) with respect to said axis (A).

7. Assembly comprising a tool (20) according to any one of the preceding claims, with a transport trolley (30), said transport trolley (30) comprising a frame (32), casters (34) fixed to the frame (32), a first space (El) for housing said tool (20), and at least one tool support member (36) in said first space (El) so that the axis (B) of the tool (20) is horizontal.

8. Together according to claim 7, the tooling (20) being as defined in claim 4 or in any one of claims 5 and 6 in combination with claim 4, wherein said support member (36) comprises elements which are complementary to the pins or orifices (76) and which are configured to cooperate by male-female engagement with these pins or orifices (76).

9. Assembly according to claim 8, wherein said support member (36) comprises a fixed vertical post (32b), a plate (38) which is mounted movably in vertical translation on this post (32b) and which carries said elements, and a crank (48) for adjusting the position of the plate (38) on the post (32b).

10. Assembly according to any one of claims 7 to 9, wherein it further comprises an annular protective flange (50) for protecting said rotor (), the transport trolley (30) further comprising a second space (E2) for housing the flange (50), and at least one support member (56) for the flange (50) in this second space (E2).

11. Installation for forming an abradable coating (18) in an aircraft turbomachine module (40), said installation comprising an assembly according to any one of claims 7 to 10, and an aircraft turbomachine module (40), said module comprising: - a central rotor (42) having an axis of rotation (A), and - an annular stator housing (10) extending around the axis (A) and the hub (42), this housing (10) comprising an internal annular surface (16) on which a resin is intended to be spread by the rollers (80) of said tooling (80) for the purpose of forming the coating (18).

12. A method for forming an abradable coating (18) in an aircraft turbomachine module (40) by means of an installation according to claim 11, wherein it comprises: - a step a) of moving said assembly towards the module (40), - a step b) of aligning the axis (B) of the tooling (20) on the axis (A) of the rotor (42), - a step c) of fixing the first part (70) of the tooling (20) on the rotor (42) of the module (40), - a step d) of removing the carriage (30) from the module (40), - a step e) of depositing resin on the surface (16) of the housing (10), this step being able to be carried out before one of the preceding steps, - a step f) of manually rotating by an operator the tooling (20) and the rotor (42) inside the housing (10), using the handwheel (82), so as to spread the resin with the rollers (80) on the surface (16) of the housing (10), - a step g) of supporting the tooling (20) by the carriage (30), - a step h) of disengaging the tooling (20) from the rotor (42), - a step i) of removing the tooling (20) from the module (40) using the carriage (30).

13. A method according to claim 12, wherein, the assembly being as defined in claim 10, the method comprises, before step a), or between steps a) and b) or b) and c), a step of fixing the flange (50) on the rotor (42) of the module (40).

14. Method according to claim 12 or 13, wherein it comprises, between steps d) and e) or e) and f), a step of adjusting the radial position of the rollers (80) with respect to the axis (A) of the rotor (42).

15. A method according to any one of claims 12 to 14, wherein step e) is carried out manually by an operator.

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