TASK 72-50-32-300-047 LPT Stage 3 Blade - Touch-Up Coat After Blend Repair, Repair-047 (VRS4298)

DMC:V2500-A0-72-50-3203-03A-609A-C|Issue No:002.00|Issue Date:2013-11-01

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 72-50-32-300-047 LPT Stage 3 Blade - Touch-Up Coat After Blend Repair, Repair-047 (VRS4298)

Effectivity

FIG/ITEM

PART NO.

01-200

3A2055

01-200

3A2373

Material of component

IAE

DESCRIPTION

SYMBOL

MATERIAL

Stage 3 Turbine Blade

INCONEL 100

General

Price and availability - none

Practices and processes referred to in the procedure by the TASK numbers are in the SPM.

NOTE

For equipment and materials necessary to do this repair, refer to the SPM TASK 70-09-00-400-501, SPM TASK 70-38-04-100-501 and SPM TASK 70-38-14-380-501.

NOTE

To identify the consumable materials refer to the PCI.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Gas furnace or Vacuum furnaceLOCALGas furnace or Vacuum furnace
Vibrating marking pencilLOCALVibrating marking pencil
Illuminated comparator magnifierLOCALIlluminated comparator magnifier
Vapor blast cabinetLOCALVapor blast cabinet

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 05-030 CAST STEEL SHOT DELETED0AM53CoMat 05-030

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-32-380-059 Touch-Up Coat the Stage 3 Turbine Blade after the Blend Repair

      NOTE

      This repair is only permitted in connection with repair instruction VRS4203, refer to TASK 72-50-32-300-025 (REPAIR-025).
      If coating is badly damaged, then refer to VRS4299, TASK 72-50-32-300-048 (REPAIR-048) or to VRS4300, TASK 72-50-32-300-049 (REPAIR-049).
      Touch-up is only permitted in area A3, refer to Figure.
      Record the part number, the blade length dimension, the heat code and the blade life figure if these are marked on the blade root.
      Optional standard diffusion heat treatment of 1950 to 2000 deg F (1066 to 1094 deg C) for 4 hours can be used. This diffusion heat treatment gives slightly more corrosion protection. Place the blades in an oven for 8 hours at 1652 deg F (900 deg C) for precipitation heat treatment before shotpeening.

      1. Prepare the material and the surface.

      1. Refer to the SPM TASK 70-38-14-380-501.

        Use vapor blast cabinet.

      2. Touch-up coat the stage 3 turbine blade.

      1. Refer to the SPM TASK 70-38-14-380-501.

    2. SUBTASK 72-50-32-370-057 Do the Diffusion Heat Treatment of the Coated Stage 3 Turbine Blade

      1. Do heat treatment on the stage 3 turbine blade to diffuse the coating.

      1. Refer to the SPM TASK 70-38-14-380-501.

        Do heat treatment for 2 hours at 1575 to 1625 deg F (857 to 885 deg C).

        Use gas furnace or the vacuum furnace.

    3. SUBTASK 72-50-32-220-176 Do the Post Repair Inspection

      1. Visually examine the coated areas for defects.

      1. Use illuminated comparator magnifier.

        No defects in the surface are permitted.

    4. SUBTASK 72-50-32-350-081 Shot Peen the Area A1 of the Turbine Blade

      NOTE

      Shot peening is permitted in area A2 but must not be complete.

      1. Prepare the stage 3 turbine blade for shot peening.

      1. Refer to the SPM TASK 70-38-04-300-503 and Figure.

    2. Mask the stage 3 turbine blade.

      3. Shot peen area A1.

      1. Refer to the SPM TASK 70-38-04-300-503.

        Use CoMat 05-030 CAST STEEL SHOT DELETED to an intensity of 6A.

    4. Remove the stage 3 turbine blade from the fixture.

    5. Remove the masking tape.

    5. SUBTASK 72-50-32-220-177 Examine the Stage 3 Turbine Blade Markings

      1. Examine the markings for turbine blade part number, heat code and blade length.

      1. Replace marking if one of these has become unreadable.

        Use the roll stamp method.

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

      2. Examine the markings for turbine blade part life.

      1. Replace marking if this has become unreadable.

        Use the vibropeen method.

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

    6. Figure: Repair Details and Dimensions

    Repair Details and Dimensions

    Figure: Repair Details and Dimensions

    Repair Details and Dimensions

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Editorial correction due to conversion

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:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:0AM53
Supply Number:CoMat 05-030
Type:sp01
Supply Short Name:CoMat 05-030 CAST STEEL SHOT DELETED
Supply Name:CoMat 05-030 CAST STEEL SHOT DELETED
Specification Groups:
Doc NumberType
DELETED
Suppliers:
ManufacturerRemarks
0AM53
Link not Found
Manufacturer Code:LOCAL
Tool Number:Illuminated comparator magnifier
Tool Name:Illuminated comparator magnifier
Manufacturer Code:LOCAL
Tool Number:Vapor blast cabinet
Tool Name:Vapor blast cabinet
Link not Found