# US 11,306,385 B2 · Tooling for the coating of lips

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- Number: US 11,306,385 B2
- Document ID: US11306385B2
- Status: Granted
- Kind: B2
- Application number: 16/793,452
- Filed: 2020-02-18
- Published: 2020-08-20
- Granted: 2022-04-19
- Earliest claimed: 2019-02-19
- Assignees: Safran Aircraft Engines
- Applicants: Safran Aircraft Engines
- Inventors: Laurent Paul Dudon; Mickaël Thiercelin
- Web page: https://patentgrep.com/patent/US11306385B2

## CPC

- B23P 23/04: for both machining and other metal-working operations
- C23C 4/129: Flame spraying
- B05B 13/02: Means for supporting work; Arrangement or mounting of spray heads; Adaptation or arrangement of means for feeding work (B05B13/06 takes precedence)
- B05B 13/0228: {the movement of the objects being rotative (B05B13/0242 takes precedence)}
- B05B 13/0278: {Arrangement or mounting of spray heads (B05B13/0207 takes precedence)}
- B05B 13/0431: {with spray heads moved by robots or articulated arms, e.g. for applying liquid or other fluent material to three-dimensional [3D] surfaces}
- B05B 13/0442: {Installation or apparatus for applying liquid or other fluent material to separate articles rotated during spraying operation}
- B05C 9/08: for applying liquid or other fluent material and performing an auxiliary operation
- B23P 15/006: {turbine wheels}
- C23C 4/10: Oxides, borides, carbides, nitrides or silicides; Mixtures thereof
- C23C 4/11: Oxides
- C23C 14/505: {for rotation of the substrates}
- F01D 11/001: {for sealing space between stator blade and rotor}
- F01D 11/02: by non-contact sealings, e.g. of labyrinth type (for sealing space between rotor blade tips and stator F01D11/08)
- F01D 25/285: {Temporary support structures, e.g. for testing, assembling, installing, repairing; Assembly methods using such structures}
- F04D 29/023: {especially adapted for elastic fluid pumps}
- F04D 29/164: {of an axial flow wheel}
- F04D 29/321: {for axial flow compressors}
- F16J 15/445: {with means for adjusting the clearance}
- F16J 15/4472: {with axial path}
- F01D 5/06: Rotors for more than one axial stage, e.g. of drum or multiple disc type; Details thereof, e.g. shafts, shaft connections {(F01D5/022, F01D5/023 take precedence)}
- F01D 5/34: Rotor-blade aggregates of unitary construction {, e.g. formed of sheet laminae; (discs formed of sheet laminae F01D5/028; ceramic materials F01D5/284, composite materials F01D5/282)}
- F05D 2230/311: by torch or flame spraying
- F05D 2230/90: Coating; Surface treatment
- B23P: METAL-WORKING NOT OTHERWISE PROVIDED FOR; COMBINED OPERATIONS; UNIVERSAL MACHINE TOOLS (arrangements for copying or controlling B23Q)
- C23C: COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL (making metal-coated products by extrusion B21C23/22; covering with metal by connecting pre-existing layers to articles, see the relevant places, e.g. B21D39/00, B23K; metallising of glass C03C; metallising mortars, concrete, artificial stone, ceramics or natural stone C04B41/00; enamelling of, or applying a vitreous layer to, metals C23D; treating metal surfaces or coating of metals by electrolysis or electrophoresis C25D; single-crystal film growth C30B; by metallising textiles D06M11/83; decorating textiles by locally metallising D06Q1/04)
- B05B: SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES (spray-mixers with nozzles B01F25/72; processes for applying liquids or other fluent materials to surfaces by spraying B05D)
- B05C: APPARATUS FOR APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL (spraying apparatus, atomising apparatus, nozzles B05B; plant for applying liquids or other fluent materials to objects by electrostatic spraying B05B5/08)
- F01D: NON-POSITIVE DISPLACEMENT MACHINES OR ENGINES, e.g. STEAM TURBINES (machines or engines for liquids F03; non-positive displacement pumps F04D)
- F04D: NON-POSITIVE-DISPLACEMENT PUMPS (engine fuel-injection pumps F02M; ion pumps H01J41/12; electrodynamic pumps H02K44/02)
- F16J: PISTONS {(specially adapted for dampers F16F9/32)}; CYLINDERS; SEALINGS
- F05D: INDEXING SCHEME FOR ASPECTS RELATING TO NON-POSITIVE-DISPLACEMENT MACHINES OR ENGINES, GAS-TURBINES OR JET-PROPULSION PLANTS

## Abstract

Tooling for the coating of lips of a turbomachine rotor sector, comprising a support for a rotor sector, a centering plate adapted to be inserted into a rotor sector, said centering plate having a central housing, a tool, said tool comprising a centering arm, adapted to be inserted into the central housing of the centering plate, a torch, adapted to spray a ceramic material, a machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips.

## Claims

### Claim 1

A tooling for coating lips of a turbomachine rotor sector, comprising a support for a rotor sector, a centering plate adapted to be inserted into a rotor sector, said centering plate having a central housing, a tool, said tool comprising a centering arm, adapted to be inserted into the central housing of the centering plate, a torch, adapted to spray a ceramic material, a machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips;
wherein the centering arm and the centering plate comprise rotating means allowing the relative rotation of the centering arm relative to the centering plate.

### Claim 2 (depends on 1)

The tooling according to claim 1, wherein the torch and the machining tool are positioned on either side of the centering arm.

### Claim 3 (depends on 1)

The tooling according to claim 1, wherein the support is movable in rotation relative to the tool.

### Claim 4 (depends on 1)

The tooling according to claim 1, wherein the machining tool and the torch are each slidably mounted relative to the centering arm.

### Claim 5 (depends on 1)

The tooling according to claim 1, wherein the machining tool has a cutting portion whose shape corresponds to a negative of lips to be machined.

### Claim 6 (depends on 1)

A method for forming an abradable coating for lips of a turbomachine rotor sector using the tooling of claim 1, the method comprising:
providing the turbomachine rotor sector comprising a plurality of lips;
positioning the rotor sector on the support;
securing the centering plate to an open end of the rotor sector, and placing an opposite end of the rotor sector on the support, said centering plate having a central housing, the tool, said tool comprising the centering arm, adapted to be inserted into the central housing of the centering plate, the torch, adapted to spray a ceramic material, the machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips; wherein the centering arm and the centering plate comprise rotating means allowing the relative rotation of the centering arm relative to the centering plate;
positioning the tool relative to the rotor sector, by inserting the centering arm in the central housing of the centering plate, said tool being provided with the torch and the machining tool;
driving the rotor sector in rotation relative to the tool; and
actuating the torch to spray a ceramic material on the lips of the rotor sector, and positioning the machining tool to machine said lips parallel to the spraying of the ceramic material by the torch so that the machining of the lips and the spraying of the ceramic material are performed simultaneously on two distinct sectors of the lips.

### Claim 7 (depends on 6)

The method according to claim 6, further comprising removing the machining tool, and spraying the ceramic material onto the lips.

### Claim 8

A tooling for coating lips of a turbomachine rotor sector, comprising a support for a rotor sector, a centering plate adapted to be inserted into a rotor sector, said centering plate having a central housing, a tool, said tool comprising a centering arm, adapted to be inserted into the central housing of the centering plate, a torch, adapted to spray a ceramic material, a machining tool, said tooling being configured so as to position the tool relative to the rotor sector via the centering plate, and to simultaneously perform on the rotor sector a spraying of ceramic material and a machining on two distinct sectors of the lips, wherein the machining tool has a cutting portion whose shape corresponds to a negative of lips to be machined.