TASK 72-50-32-300-055 LPT Stage 7 Blade - Weld Build Up Repair Of Outer Shroud Hardfacing, Repair-055 (VRS4284)

DMC:V2500-A0-72-50-3207-03A-627A-C|Issue No:003.00|Issue Date:2015-08-01

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 72-50-32-300-055 LPT Stage 7 Blade - Weld Build Up Repair Of Outer Shroud Hardfacing, Repair-055 (VRS4284)

Effectivity

FIG/ITEM

PART NO.

01-010

3A1807

01-010

3A2477

Material of component

PART IDENT

SYMBOL

MATERIAL

Stage 7 turbine blade

INCONEL 713C

General

Price and availability - none

The practices and processes referred to in the procedure by the TASK number are in the SPM.

NOTE

For more equipment and materials necessary to do this repair refer to the SPM TASK 70-09-00-400-501, SPM TASK 70-11-03-300-503, SPM TASK 70-23-03-230-501, SPM TASK 70-23-08-230-501, SPM TASK 70-31-08-310-501, SPM TASK 70-37-00-370-501, SPM TASK 70-37-10-370-501 and SPM TASK 70-38-04-300-503.
Equivalent equipment may be used.

NOTE

To identify the consumable materials, refer to the PCI.

NOTE

If repair of pre-twist per VRS4302 TASK 72-50-32-300-053 (REPAIR-053) is also required, then do VRS4302 TASK 72-50-32-300-053 (REPAIR-053) first, before start of this repair.
Before start of repair, record the stage 7 turbine blade manufacturing code part number, heat code, blade life figure and serial number, if marked on the blade.

Preliminary Requirements

Pre-Conditions

NONE

Support Equipment

NameManufacturerPart Number / IdentificationQuantityRemark
Cleaning facilityLOCALCleaning facility
Welding facilityLOCALWelding facility
Inspection facilityLOCALInspection facility
Machining facilityLOCALMachining facility
Heat treatment facilityLOCALHeat treatment facility
Crack inspection equipmentLOCALCrack inspection equipment
Blasting facilityLOCALBlasting facility
Marking facilityLOCALMarking facility
IAE 2M14192 Inspection gage0AM53IAE 2M141921
IAE 3M14401 Welding mounting block0AM53IAE 3M144011
IAE 3M14405 Grinding fixture (convex/concave side)0AM53IAE 3M144051
IAE 3M14499 Welding fixture0AM53IAE 3M144991

Consumables, Materials and Expendables

NameManufacturerPart Number / IdentificationQuantityRemark
CoMat 03-283 COATING ALLOY0CZB2CoMat 03-283
CoMat 05-030 CAST STEEL SHOT DELETED0AM53CoMat 05-030
CoMat 02-001 ADHESIVE TAPE (MASKING)LOCALCoMat 02-001

Spares

NONE

Safety Requirements

NONE

Procedure

    1. SUBTASK 72-50-32-110-123 Clean the Stage 7 Turbine Blade

      1. Clean the blade.

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

    2. SUBTASK 72-50-32-310-072 Weld Build-Up Repair the Worn Sufaces

      1. Tungsten inert gas weld build-up surfaces.

      1. Refer to Figure and the SPM TASK 70-31-08-310-501. Build up sufficient material to do last machining. Use CoMat 03-283 COATING ALLOY. In area A4 electrical contact is permitted.

        No burning, pitting or selective attack is permitted.

    3. SUBTASK 72-50-32-220-315 Examine the Welded Areas

      1. Examine the hardness of weld nugget.

      1. Rockwell 40 HRC minimum or equivalent is required.

      2. Visually examine.

      1. Refer to the SPM TASK 70-31-08-310-501 for weld accept limits.

    4. SUBTASK 72-50-32-320-087 Machine the Welded Areas

      1. Grind the welded areas.

      2. Remove the unwanted weld material to the original contours on the inner and outer surfaces.

      1. Refer to Figure for finishing dimensions.

      3. Remove burrs and sharp edges.

      1. Refer to Figure for finishing dimensions and the affected areas.

    5. SUBTASK 72-50-32-220-316 Examine the Repaired Outer Shroud Hardfacing

      1. Visually examine the hardfacing.

      1. The extension of linear discontinuities to any edge is not permitted.

      2. Dimensionally examine the hardfaced areas.

    6. SUBTASK 72-50-32-370-086 Heat Treat after Machining

      1. Heat treat the stage 7 turbine blade.

      1. Heating and cooling rate to be maximum 40 deg F (22 deg C) per minute.

    7. SUBTASK 72-50-32-230-141 Examine the Stage 7 Turbine Blade for Cracks after Heat Treatment

      1. Do the test for cracks.

      1. The maximum permitted length of discontinuities is 0.016 in. (0.4 mm) in the repaired areas.

    8. SUBTASK 72-50-32-110-124 Clean the Stage 7 Turbine Blade

      1. Clean the blade.

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

    9. SUBTASK 72-50-32-380-082 Shot-Peen the Surface A1 of the Stage 7 Turbine Blade

      1. Mask the turbine blade surface in area A3.

      2. 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.

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

        Refer to Figure.

      3. Remove all masking.

      1. Remove all the tape.

    10. SUBTASK 72-50-32-220-317 Examine the blade Markings

      1. Examine the markings of the stage 7 turbine blade manufacturing code, part number, heat code and serial number.

      1. If you cannot read any of these, make new marks.

        Use the roll stamp method.

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

      2. Examine the marking of the stage 7 turbine blade life.

      1. If you cannot read this marking, make a new mark.

        Use the vibro-peen method.

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

    11. Figure: Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Figure: Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Sheet 1

    Legend
    Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Sheet 1

    Close

    Figure: Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Sheet 2

    Legend
    Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Sheet 2

    Close

    Figure: Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Figure: Weld build-up of outer shroud hardfacing of stage 7 turbine blade

    Weld build-up of outer shroud hardfacing of stage 7 turbine blade

Requirements After Job Completion

Follow-On Conditions

NONE
Change Type:

Revised note to remove "materials or". (PSAF 15VC314)

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:0CZB2
Enterprise Name:DELETED. REFER TO VENDOR CODE 1YSY4.
Manufacturer Code:LOCAL
Enterprise Name:LOCALLY SUPPLIED
Manufacturer Code:LOCAL
Supply Number:CoMat 02-001
Type:sp01
Supply Short Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Supply Name:CoMat 02-001 ADHESIVE TAPE (MASKING)
Specification Groups:
Doc NumberType
OMAT: 230 (RR REF)ZINC OXIDE AT142
JCR-197 (JAEC REF)ZINC OXIDE AT142
Suppliers:
ManufacturerRemarks
LOCAL
K6835
U0415
Manufacturer Code:0CZB2
Supply Number:CoMat 03-283
Type:sp01
Supply Short Name:CoMat 03-283 COATING ALLOY
Supply Name:CoMat 03-283 COATING ALLOY
Specification Groups:
Doc NumberType
POWDER PWA 694
Suppliers:
ManufacturerRemarks
0CZB2
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
Manufacturer Code:LOCAL
Tool Number:Blasting facility
Tool Name:Blasting facility
Manufacturer Code:LOCAL
Tool Number:Cleaning facility
Tool Name:Cleaning facility
Manufacturer Code:LOCAL
Tool Number:Crack inspection equipment
Tool Name:Crack inspection equipment
Manufacturer Code:LOCAL
Tool Number:Heat treatment facility
Tool Name:Heat treatment facility
Manufacturer Code:0AM53
Tool Number:IAE 2M14192
Tool Name:IAE 2M14192 Inspection gage
Manufacturer Code:0AM53
Tool Number:IAE 3M14401
Tool Name:IAE 3M14401 Welding mounting block
Manufacturer Code:0AM53
Tool Number:IAE 3M14405
Tool Name:IAE 3M14405 Grinding fixture (convex/concave side)
Manufacturer Code:0AM53
Tool Number:IAE 3M14499
Tool Name:IAE 3M14499 Welding fixture
Manufacturer Code:LOCAL
Tool Number:Inspection facility
Tool Name:Inspection facility
Manufacturer Code:LOCAL
Tool Number:Machining facility
Tool Name:Machining facility
Manufacturer Code:LOCAL
Tool Number:Marking facility
Tool Name:Marking facility
Manufacturer Code:LOCAL
Tool Number:Welding facility
Tool Name:Welding facility