TASK 72-41-15-300-029 HPC Stage 12 Rotor Blade - Vibro Polish To Restore The Surface Finish, Repair-029 (VRS6074)

DMC:V2500-A0-72-41-1512-00A-648A-C|Issue No:003.00|Issue Date:2021-05-01

Export Control

EAR Export Classification: Not subject to the EAR per 15 C.F.R. Chapter 1, Part 734.3(b)(3), except for the following Service Bulletins which are currently published as EAR Export Classification 9E991: SBE70-0992, SBE72-0483, SBE72-0580, SBE72-0588, SBE72-0640, SBE73-0209, SBE80-0024 and SBE80-0025.

Copyright

© IAE International Aero Engines AG (2001, 2014 - 2021) The information contained in this document is the property of © IAE International Aero Engines AG and may not be copied or used for any purpose other than that for which it is supplied without the express written authority of © IAE International Aero Engines AG. (This does not preclude use by engine and aircraft operators for normal instructional, maintenance or overhaul purposes.).

Applicability

All

Common Information

TASK 72-41-15-300-029 HPC Stage 12 Rotor Blade - Vibro Polish To Restore The Surface Finish, Repair-029 (VRS6074)

Effectivity

FIG/ITEM

PART NO

ASSEMBLY

02-770

6A3261

A

02-770

6A4729

A

02-770

6A5643

A

02-770

6A5947

A

02-770

6A6565

A

02-770

6A8763

B

02-785

6A3262

A

02-785

6A4206

A

02-785

6A5644

A

02-785

6A5648

A

02-785

6A8764

B

02-800

6A3260C01

A

02-800

6A4207C01

A

02-800

6A8761

B

02-815

6A3260C01

A

02-815

6A4207C01

A

02-815

6A8761

B

02-817

6A3260C02

A

02-817

6A4207C02

A

02-817

6A8762

B

Material of component

PART IDENT

MATERIAL

HPC - Stage 12 Rotor Blade

Nickel chromium alloy

General

This TASK gives the procedure to vibro-polish the HPC Stage 12 Rotor Blades.

The blades must have been repaired, where necessary, and inspected before vibro-polishing.

The blades can only have this repair completed on them three times.

The practices and processes referred to in the procedure by the TASK/SUBTASK numbers are in the SPM.

Price and Availability

Refer to International Aero Engines.

Related Repairs - None

NOTE

Equipment and materials necessary to do this repair are in the SPM TASKS given below:
SPM TASK 70-09-00-400-501
SPM TASK 70-11-03-300-503
SPM TASK 70-38-25-380-501

NOTE

To identify the consumable materials, refer to the PCI.

Preliminary Requirements

Pre-Conditions

Action/ConditionData Module/Technical Publication
Make sure that all cleaning and inspection procedures are done before this repair.
All other repairs must be completed before you apply VRS6074.
Restore the airfoil surface finish before you apply VRS6074. Refer to repair VRS6150 (REPAIR-040).TASK 72-41-15-300-040

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
IAE 3R18556 Mask0AM53IAE 3R185561

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-093 SUPERFINISHING MEDIA, CERAMIC, ANGLE CUT TRIANGLE IAE56CoMat 05-093
CoMat 05-095 LIQUID COMPOUND (VIBROPOLISHING FINISHING FLUID)IE230CoMat 05-095
CoMat 05-181 VIBRO POLISHING MEDIA, CERAMIC PINLOCALCoMat 05-181
CoMat 05-182 VIBRO POLISHING COMPOUND, LIQUIDIAE56CoMat 05-182
CoMat 05-183 VIBRO POLISHING PASTEIAE56CoMat 05-183

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-41-15-220-187 Make sure that the Stage 12 Rotor Blade can be Vibro Polished

    1. Refer to Figure.

      2. Examine the blade platform underside surface, the dovetail side surface, and the dovetail bottom surface to find, if VRS6074 was done before.

        1. Examine the component for the repair identification symbol, a 1 in a triangle, and any suffixes.

          1. If the repair identification symbol and a /2 suffix are engraved on the blade.

          1. Reject.

          2. If there is no repair identification symbol or if the repair identification symbol is engraved with a /1 suffix or with no suffix on the blade.

          1. Continue with the repair.

    2. SUBTASK 72-41-15-350-083 Apply the Mask to the Stage 12 Rotor Blade

      1. Apply a mask or maskants to the blade root.

      1. Apply a mask or maskants over minimum area of blade air washed surface.

      2. Refer to SPM TASK 70-38-25-380-501 and/or use IAE 3R18556 Mask.

    3. SUBTASK 72-41-15-380-073-A00 Vibro-Polish the Stage 12 Rotor Blade Airfoil, Assembly A

    1. Refer to Figure.

      2. Vibro-polish the blade airfoil and adjacent annulus surfaces.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Polish the surfaces in the area specified AB.

        1. The surface finish is to be 20 microinches (0.50 micrometers) maximum on a minimum of 70 percent of the surface area.

        2. On the remainder of the blade, the surface finish is to be between 20 microinches (0.50 micrometers) and 32 microinches (0.80 micrometers).

        3. Do not have more than 50 blades for one cubic foot of the superpolishing media.

          4. Use one of the following options to get the surface finish limits. The dimension of the superfinishing media is to be 10 mm x 10 mm maximum.

          3. Option 3: Method Two consumables.

    4. SUBTASK 72-41-15-380-073-B00 Vibro-Polish the Stage 12 Rotor Blade Airfoil, Assembly B

    1. Refer to Figure.

      2. Vibro-polish the blade airfoil and adjacent annulus surfaces.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Polish the surfaces in the area specified AB.

        1. A maximum of 10 microinches (0.25 micrometers) surface finish is permitted on blade airfoil and fillet surfaces.

        2. On the remainder of the blade, the maximum surface finish is to be 16 microinches (0.40 micrometers).

        3. Do not have more than 50 blades for one cubic foot of the superpolishing media.

          4. Use one of the following options to get the surface finish limits. The dimension of the superfinishing media is to be 10 mm x 10 mm maximum.

          3. Option 3: Method Two consumables.

    5. SUBTASK 72-41-15-350-147 Remove the Mask from the Stage 12 Rotor Blade

    1. Remove the mask or maskants.

    6. SUBTASK 72-41-15-110-206 Clean the Stage 12 Rotor Blade

      1. Clean by aqueous degreasing.

      1. Refer to SPM TASK 70-11-03-300-503.

    7. SUBTASK 72-41-15-220-188-A00 Examine the Stage 12 Rotor Blade Surface Finish, Assembly A

    1. Refer to Figure.

      2. Examine the surface finish of the blade.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Examine the surface finish on the each side of the airfoil and the adjacent surfaces in the area specified AB.

        1. The surface finish must obey the limits of Step.

          2. If the surface finish is not in the specified limits, do the repair from Step again.

          1. Record each application of vibro-polishing during procedure of VRS6074.

          2. Repair can be applied again, only if the repair identification symbol suffix number will not be more than /2 after the initial application. Each application must be recorded.

        3. If the surface finish is in the specified limits, continue with the repair.

    8. SUBTASK 72-41-15-220-188-B00 Examine the Stage 12 Rotor Blade Surface Finish, Assembly B

    1. Refer to Figure.

      2. Examine the surface finish of the blade.

      1. Refer to SPM TASK 70-38-25-380-501.

        2. Examine the surface finish on the each side of the airfoil and the adjacent surfaces in the area specified AB.

        1. The surface finish must obey the limits of Step.

          2. If the surface finish is not in the specified limits, do the repair from Step again.

          1. Record each application of vibro-polishing during procedure of VRS6074.

          2. Repair can be applied again, only if the repair identification symbol suffix number will not be more than /2 after the initial application. Each application must be recorded.

        3. If the surface finish is in the specified limits, continue with the repair.

    9. SUBTASK 72-41-15-350-084 Identify the Repair

    1. Refer to Figure.

      2. Mark the repair identification symbol and the applicable suffix numbers at the indicated location on the blade, use vibration peen method.

      1. Refer to SPM TASK 70-09-00-400-501.

        2. If this is the first application of VRS6074, mark the repair identification symbol, a 1 in a triangle, on the indicated surface.

        1. If the blade is already identified with the repair identification symbol, only the suffix number is to be updated.

      3. If this is the second application of VRS6074, mark /1 adjacent to the repair identification symbol.

      4. If this is the third application of VRS6074, mark /2 adjacent to the repair identification symbol.

      5. Record each application of vibro-polishing during procedure of VRS6074. The process can be applied again, only if the inspection is in agreement with Step or Step, then this must be counted as an additional application of VRS6074 and the applicable suffix number must be updated.

    10. Figure: Repair Details And Dimensions - Assembly A

    Repair Details And Dimensions - Assembly A

    Figure: Repair Details And Dimensions - Assembly B

    Repair Details And Dimensions - Assembly B

    Figure: HPC Stage 12 Rotor Blade - Repair Marking Areas

    HPC Stage 12 Rotor Blade - Repair Marking Areas

    Legend
    3

    HPC Stage 12 Rotor Blade - Repair Marking Areas

    1. Dovetail Side Surface Marking Area. Each Side Of Dovetail.

    2. Platform Underside Surfaces Marking Areas. Do Not Mark On Outer Edges.

    3. Dovetail Bottom Surfaces Marking Areas.

    4. 0.0315 Inch (0.800 mm) Minimum.

    5. Corner Radius Minimum. Each Side Of Dovetail.

    6. Fillet Radius Minimum.

    7. Corner Radius Minimum.

    8. Distance From Dovetail Fillet Radius To The Projected Dovetail Bottom Surface. Do Not Extend Marking Into The Fillet Radius.

    Close

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised the procedure in its entirety. (19VG261)

Manufacturer Code:0AM53
Enterprise Name:IAE INTERNATIONAL AERO ENGINES AG
BU Name:NULL
Building:SUITE 400
Street:628 HEBRON AVENUE
City:GLASTONBURY
State:CT
Zip Code:06033
Country:USA
Manufacturer Code:IAE56
Enterprise Name:DELETED. REFER TO VENDOR CODE V056V.
Manufacturer Code:IE230
Enterprise Name:DELETED. REFER TO VENDOR CODE FAJU6.
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:CK340
Supply Number:CoMat 05-093
Type:sp01
Supply Short Name:CoMat 05-093 SUPERFINISHING MEDIA, CERAMIC, ANGLE CUT TRIANGLE
Supply Name:CoMat 05-093 SUPERFINISHING MEDIA, CERAMIC, ANGLE CUT TRIANGLE
Specification Groups:
Doc NumberType
ROSLER RM S ANGLE CUT TRIANGLE
Suppliers:
ManufacturerRemarks
CK340
K6835
V056V
Manufacturer Code:DL610
Supply Number:CoMat 05-095
Type:sp01
Supply Short Name:CoMat 05-095 LIQUID COMPOUND (VIBROPOLISHING FINISHING FLUID)
Supply Name:CoMat 05-095 LIQUID COMPOUND (VIBROPOLISHING FINISHING FLUID)
Specification Groups:
Doc NumberType
ARF
Suppliers:
ManufacturerRemarks
DL610
FAJU6
K6835
V140V
V563V
Manufacturer Code:X222X
Supply Number:CoMat 05-181
Type:sp01
Supply Short Name:CoMat 05-181 VIBRO POLISHING MEDIA, CERAMIC PIN
Supply Name:CoMat 05-181 VIBRO POLISHING MEDIA, CERAMIC PIN
Specification Groups:
Doc NumberType
Where CoMat 05-181 is specified with no letter suffix, use CoMat 05-181A or CoMat 05-181B
Suppliers:
ManufacturerRemarks
X222X
Manufacturer Code:K6835
Supply Number:CoMat 05-182
Type:sp01
Supply Short Name:CoMat 05-182 VIBRO POLISHING COMPOUND, LIQUID
Supply Name:CoMat 05-182 VIBRO POLISHING COMPOUND, LIQUID
Specification Groups:
Doc NumberType
Rosler FC 120
Suppliers:
ManufacturerRemarks
K6835
V056V
Manufacturer Code:K6835
Supply Number:CoMat 05-183
Type:sp01
Supply Short Name:CoMat 05-183 VIBRO POLISHING PASTE
Supply Name:CoMat 05-183 VIBRO POLISHING PASTE
Specification Groups:
Doc NumberType
SVRB 1
Suppliers:
ManufacturerRemarks
K6835
V056V
Manufacturer Code:0AM53
Tool Number:IAE 3R18556
Tool Name:IAE 3R18556 Mask