RING 1191550 - Caterpillar

References
Table 2
References
Media Number Publication Type & Title
SEBF9236 Special Instruction , "Fundamentals of High Velocity Oxygen Fuel (HVOF) Spray for Reconditioning Components"
SEBF9238 Special Instruction , "Fundamentals of Arc Spray for Reconditioning Components"
SEBF9240 Special Instruction , "Fundamentals of Flame Spray for Reconditioning Components" Part Description
Table 3
Base Metal Aluminum
Hardness N/A Flame Spray Equipment and Procedure
Table 4
Maximum Surface Finish 3.175 Micrometers (125.0000 Microinches)
Reason for Spraying Wear
Mating Part Contact Area & Material Controlled Clearance
METCO Equipment Type 6P-II
Metco Material Metco 452 or 453
Finished Thickness As Required
Finishing Allowance 0.51 mm (0.020 inch) per side
Spray Angle 90° to bore
Substrate Pre-Heat Temperature None
Substrate Temperature During Spraying Not to Exceed 93.3° C (200.00° F)
Auxiliary Cooling A J, if required
Rotation/Traverse Device Lathe or turntable
Rotation/Traverse Speed 91.4 SMPM (300.00 SFPM)
Surface Preparation Method Grit Blast
Finishing Method Machine
Machining Equipment Type Lathe
Recommended Cutter Grade 883 carboloy or equivalent
Remarks Avoid large buildups on aluminum as cooling and expansion rates must be closely watched.
Table 5
Flame Spray Process (6P) Procedure Check List
Clean Part Use METCO Cleaning Solvent or equivalent
Undercut Not required
Chamfer All edges - 45° x 0.76 mm (0.030 inch)
Remove Oxide Emery paper or glass beading
Clean Spray Area N/A
Mask for Blast Metal mask
Blast Equipment Pressure blast
Grit Type and Size G-25 angular steel
Blast Air Pressure 620 kPa (90.0 psi)
Blast Nozzle to Work Distance 51.0 mm (2.00 inch)
Remove Blast Mask N/A
Mask for Spray Use blast mask and masking compound
Spray Equipment Type 6PII
Auxiliary Cooling Use blasting mask and masking compound
Nozzle 6P7C-B "B" nozzle - requires 6P-600 siphon plug
Air Capacity/Pressure 6P-3/Pinch air - 140 kPa (20.0 psi)
Oxygen Pressure 158.6 kPa (23 psi)
Oxygen Flow 962.77 L/h (34.000 cfh)
Fuel Gas Pressure 100 kPa (15.0 psi)
Fuel Gas Flow 962.77 L/h (34.000 cfh)
Carrier Gas Pressure 380 kPa (55.0 psi)
Carrier Gas Flow 1050 L/h (37.0 cfh)
Spray Rate/Build Up 2.27 kg (5.000 lb) per hour, 0.51 mm (0.002 inch) per pass
Gun to Work Distance 177.8 mm (7.00 inch)
Rotation Speed of Part 60.96 SMPM (200.000 SFPM) minimum
Traverse Rate of Gun 15.24 SMPM (50.000 SFPM)
Gun Fixturing Method Hand held
Top Coat/Thickness As required
Finishing Equipment Lathe
Part/Cutter Rotation 182.88 SMPM (600.000 SFPM) minimum
Traverse Speed 0.51 mm (0.002 inch) to 0.10 mm (0.004 inch) per revolution
Depth of Rough Cut 0.25 mm (0.010 inch)
Depth of Finish Cut 0.13 mm (0.005 inch) Specifications
Illustration 3 g03021304For dimensional specifications refer to Special Instruction, SEBF8008, "Turbine Wheel for Torque Converters Used with Power Shift Transmissions".