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Motor Development Team
SS-TEM Nozzle Manufacture - Shell
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119 Kb Grant Saviers Raw stock (Durabar – ductile iron) for Shell (130#) and Ring (120#) 135 Kb Grant Saviers Mounting a new 16” D1-8 4 jaw chuck (increase the grip length on the raw stock) 231 Kb Grant Saviers Hoisting stock for shell into Sharp 18 x 62S 10hp lathe 135 Kb Grant Saviers Mounting stock for Shell into 4 jaw chuck 135 Kb Grant Saviers Turning OD to large flange diameter with MT5 live center, CA size tool post 112 Kb Grant Saviers Roughing cutting exterior tapers, .125” doc x .020” ipr, DNMP543 carbide insert 71 Kb Grant Saviers Completed taper roughing cuts on OD, 0.125” depth of cut per pass, center cylinder section is the reference for ending taper cuts 165 Kb Grant Saviers Use Allied/AMEC 1 7/8” spade drill to drill 11” deep, no coolant. Next time I’ll set up the power feed! 134 Kb Grant Saviers Bore from inlet side to graphite ID diameter, note steady rest 112 Kb Grant Saviers 1.5” dia x 16” long boring bar is not long enough to bore full depth 110 Kb Grant Saviers Inlet side tapers and mounting surfaces finished 100 Kb Grant Saviers Inlet side finished alt. view 95.5 Kb Grant Saviers Inlet taper, graphite insert goes here. 10 deg angle set with sine bar 135 Kb Grant Saviers Cutoff entire shell at 6” diameter with GTN 4.8 124 Kb Grant Saviers Cut off shell ready to finish exhaust ID & OD tapers & flange 119 Kb Grant Saviers Oops - Not enough bed in the gap for steady to hold the center of the shell 125 Kb Grant Saviers Plan B mounting with hold downs for exhaust tapers – under 0.002” TIR at end 146 Kb Grant Saviers Finished Shell, actual weight 10.87#. I made 100# of chips! 110 Kb Grant Saviers Some minor chatter/ringing near exhaust exit after hand polishing 143 Kb Grant Saviers Grant Saviers with finished shell, lathe in background