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![Page 1: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/1.jpg)
Rainbow Mechanical and Electrical Works
© Copyright 2013 Trinity Holdings. All Rights Reserved
Reconditioning Services
Mud Motor Rotors and Down hole tools
![Page 2: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/2.jpg)
Rainbow Mechanical and Electrical Works
© Copyright 2013 Trinity Holdings. All Rights Reserved
Part of Trinity Holdings, UAE.
Established in 1991, Abu Dhabi ,to offer specialized services to Oil &
Gas industry Worldwide
Specializes in Thermal spray and surface treatment services
Houses modern spray technology including HVOF, Plasma and Twin
wire arc processes
Supporting facilities include CNC machinery, Heat Treatment furnaces,
re-chroming provisions and laboratory
![Page 3: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/3.jpg)
Rainbow Mechanical and Electrical Works
© Copyright 2013 Trinity Holdings. All Rights Reserved
Mud Motors rotors reconditioning works
HVOF, tungsten carbide coating on rotor surface
Hard chrome plating on rotor surface
Joining of two rotors
Stub welding
Catcher repair
Shortening and re-threading
![Page 4: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/4.jpg)
Mud Motor Rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
HVOF tungsten carbide coating on Rotors
• Incoming inspection
• Stripping of existing coating
• Pre-polishing
• MPI (Magnetic particle Inspection)
• Grit Blasting
• HVOF spray
• Polishing
• Final Inspection and DPT
• Sealing
• Package/ handling and QC
![Page 5: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/5.jpg)
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 5
Surface damage due to salt incursions Pittings due to corrosion
Incoming inspection – Typical damages
Damages due to acid attack Deep pitting
![Page 6: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/6.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 6
Stripping of existing coating
Stripping Tank
Stripping in progress
![Page 7: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/7.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 7
Pre-polishing
Pre-polishing
![Page 8: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/8.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 8
Magnetic Particle Inspection (MPI)
Checking for surface defects
![Page 9: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/9.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 9
Grit Blasting
Blasting to prepare the surface for coating
Blasting room
![Page 10: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/10.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 10
HVOF coating
HVOF Tungsten carbide coating on the surface of
the rotor
![Page 11: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/11.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 11
Finish Polishing
Final Polishing
![Page 12: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/12.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 12
DPT/ Final Inspection
Final Inspection and all dimension checks
Dye Penetrant test to check for coating defects
![Page 13: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/13.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 13
Ultrasonic test (If required)
UT test is carried upon customer request to check
for bond integrity
![Page 14: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/14.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 14
Sealing
Baking furnace for sealant
Indigenous Rainbow sealant is applied to seal
the micro-porosity
![Page 15: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/15.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 15
Packing/ Delivery
Handling and transport
Protection packing
![Page 16: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/16.jpg)
HVOF carbide coating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 16
QC Package
All major and minor dia pre-sizes and final sizes
Coating material spec and its conformity
NDT reports if required
COC
Major dia
6.3446.3466.3486.3506.3526.3546.3566.3586.3606.3626.364
1 2 3 4 5 6 7 8
Observation Maximum Minimum
4.9344.9364.9384.9404.9424.9444.9464.9484.9504.952
1 2 3 4 5 6 7 8
Observation Maximum Minimum
6.2856.2906.2956.3006.305
1 2 3 4 5 6 7 8
Observation
Maximum Minimum
4.9004.9104.9204.9304.9404.9504.960
1 2 3 4 5 6 7 8
Observation Maximum Minimum
Minor dia
![Page 17: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/17.jpg)
Mud Motor Rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Hard chrome plating on Rotors
• Incoming inspection
• Stripping of existing coating
• Pre-polishing
• MPI (Magnetic particle Inspection)
• Preparation
• Chrome plating
• Buffing/ finish Polishing
• Final Inspection and QC
• Package/ handling
![Page 18: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/18.jpg)
Hard Chrome plating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 18
Preparation
Involves Fixtures Taping Cleaning Chemical activation
![Page 19: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/19.jpg)
Hard Chrome plating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 19
Chrome plating
Process under progress inside Chrome tank
![Page 20: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/20.jpg)
Hard Chrome plating on mud motor rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 20
Polishing/buffing
Buffing/ Polish finish
![Page 21: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/21.jpg)
Mud Motor Rotors
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 21
Additional Services
Joining of two rotors to make a bigger one
Stub welding
Catcher repair
Shortening and re-threading
![Page 22: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/22.jpg)
Mud Motor Rotors Joining of two rotors
Connecting two cut rotors
Welding the joint
Stress relieving
Finish polishing and re-coating
![Page 23: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/23.jpg)
Mud Motor Rotors Stub Welding
Matching and finish machining
Making new stub and welding to rotor
Cutting the damaged part
![Page 24: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/24.jpg)
Mud Motor Rotors Catcher repairs
Machining out damaged bore
Finish machining to the spec
Shrink fitting and welding sleeve onto catcher bore
Manufacturing new sleeve
![Page 25: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/25.jpg)
Mud Motor Rotors Shortening and re-threading
Machine/ cut the un-wanted portion
Re-thread the connection
Match with chamfer at the top
![Page 26: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/26.jpg)
Down hole Tools
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 26
Repair & Manufacturing (partial)
Lower and Upper rotating bearing
Bearing mandrel and housings
Adjustable bent Housings
Mud Screens (manufacturing with coating)
Turbine housings
Piston Housings
Spline Mandrel
MMA Housings & Seal Retainers
Valve Piston
Rhino Bodies
![Page 27: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/27.jpg)
Down hole Tools
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 27
Reconditioning services include
HVOF tungsten carbide coating
Ceramic coatings
Electro less Nickel plating
Sulphamade Nickel – chrome plating
Chrome plating
Weld repairs
Heat Treatment
![Page 28: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/28.jpg)
Bearing Mandrel MMA Housings
Turbine bearings Lower rotating bearings
![Page 29: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/29.jpg)
Mud screens with coating Valve body repair
Adjustable bent housings Drill collar repair
![Page 30: Reconditioning Services - Trinity Holdingsuploads.trinityholdings.com/2014/04/Rainbow-Rotors-and-Downhole... · Mud Motor Rotors Stub Welding Matching and finish machining Making](https://reader030.fdocuments.in/reader030/viewer/2022021718/5b94e37c09d3f272648ba67b/html5/thumbnails/30.jpg)
© Copyright 2013 Trinity Holdings. All Rights Reserved
Page 30
group subsidiaries