BEARING-TAPER 4907458 - Caterpillar

Flame Spray Equipment and Procedure
Table 5
Maximum Surface Finish     3.5 Micrometer (140.00 Microinches)    
Reason for Spraying     Fretting and wear    
Mating Part Contact Area & Material     Aluminum Pipe    
Oerlikon Metco Equipment Type     6P-II by Oerlikon Metco    
Oerlikon Metco Material     Metco 471 NS    
Finish Thickness     As Required
0.38 mm (0.015 inch)    
Finishing Allowance    
0.51 to 0.64 mm (0.020 to 0.025 inch) per side    
Spray Angle     90°    
Substrate Pre-Heat Temperature     None    
Substrate Temperature During Spraying Not to Exceed    
93° C (200° F)    
Auxiliary Cooling     If desired    
Rotation/Traverse Speed    
15.0 SMPM (50.00 SFPM)    
Surface Preparation Method     Undercut and Grit blast    
Finishing Method     Machine    
Machining Equipment Type     Horizontal or vertical boring machine    
Recommended Cutter Grade     C-2, 883 Carboloy, or equivalent    
Table 6
Flame Spray Process (6P-II)     Procedure     Check List    
Clean Part     Degrease in hot aluminum safe cleaner        
Undercut     To "tru-up" surface        
Remove Oxide     Use emery cloth or glass bead blaster        
Clean Spray Area     Metco cleaning solvent or equivalent        
Mask for Grit Blast     Duct Tape, metal shield, or rubber        
Grit Blast Equipment     Pressure type only        
Grit Type and Size     Metcolite "C" or equivalent        
Blast Air Pressure    
344 kPa (50.0 psi)        
Blast Nozzle to Work Distance    
50 mm (2.0 inch)        
Remove Blast Mask     Remove mask, make sure that surface is clean        
Mask for Metal Spray     Metco AntiBond or Blue Layout Dye        
Metal Spray Equipment Type     6P-II Hand Held Thermo Spray System by Oerlikon Metco        
Auxiliary Cooling     AJ siphon unit, If desired        
Nozzle     6P-C7-D "D" Nozzle        
Air Capacity/Pressure     6P-3/Cooling Air
140 - 170 kPa (20.0 - 25.0 psi)        
Oxygen Pressure    
210 kPa (30.0 psi)        
Oxygen Flow    
1190 L/h (42.0 cfh)        
Fuel Gas Pressure    
100 kPa (15.0 psi)        
Fuel Gas Flow    
1415 L/h (50.0 cfh)        
Carrier Gas Pressure    
380 kPa (55.0 psi)        
Carrier Gas Flow    
1050 L/h (37.0 cfh)        
Spray Rate/Build Up    
2.3 kg (5 lb) per hour or
38 gr (1.3 oz) per min        
Gun to Work Distance    
216 mm (8.5 inch)        
Traverse Rate of Gun    
15.0 SMPM (50.00 SFPM)        
Gun Fixturing Method     Machine mount or hand held        
Top Coat/Thickness    
0.05 to 0.10 mm (0.002 to 0.004 inch) per pass        
Finishing Equipment     Horizontal or vertical boring machine        
Part/Cutter Rotation    
366.0 SMPM (1200.00 SFPM)