The temperatures produced on drilling (without water) small holes in pressed TATB PBX samples were measured using thermocouples in /sup 3///sub 16/-in. and /sup 1///sub 4/-in. twist drills. Temperatures up to 273/sup 0/C were obtained at 480 rpm and a feed rate of 0.001 in/rev for PBX 9502. Lower temperatures were measured at lower speeds and for RX-03-BB. A feed rate of 0.007 in/rev and speed of 160 rpm gave temperatures below 165/sup 0/C in all cases.
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The temperatures produced on drilling (without water) small holes in pressed TATB PBX samples were measured using thermocouples in /sup 3///sub 16/-in. and /sup 1///sub 4/-in. twist drills. Temperatures up to 273/sup 0/C were obtained at 480 rpm and a feed rate of 0.001 in/rev for PBX 9502. Lower temperatures were measured at lower speeds and for RX-03-BB. A feed rate of 0.007 in/rev and speed of 160 rpm gave temperatures below 165/sup 0/C in all cases.
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