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HEATING VENTILATING AIR CONDITIONING GUIDE 1942 Table 3. Drying Time and Conditions for Representative Materials3 Material Temperature Dbg F Per Cent Relative Humidm Drying Time 140-180 6 Hrs 200 2.5 Hrs 140 . 4-6 Hrs 300 15 Min 140 18 Hrs 150-190 120 40 Min Brake Lining......................... ---------- ------------------ 325 350 to 90 12 Min 24 Hrs 1100 108 Min 150 4.5 Hrs 165 2 Hrs 180 5 Hrs 110-150 150 70 to 20 24 Hrs 95-100 170-210 10 Hrs 150-200 4--6 Hrs 160-180 24 Hrs 400 Max 2 Hrs Cores, Oil sand for molding.--------- Yg --1 in. thick 300 30 Min Black sand with goulic binder 3 in. thick 8 in. thick 480 .480 2.5 Hrs 4.5 Hrs 16 in. thick 700 10 Hrs Cores, Crank case (in continuous ovei 525-600 2-3 Hrs Cores, Radiator (in continuous ovens] 275-450 1.5 Hrs 150 2 Hrs 180 ; : 225 290-425 225 2 Hrs + Air Dry 1 Hr 3 Hrs 200 1 Hr 90-95 ~7 ^40-50 18-36 Hrs 450 1 Hr 225-300 30-350 Min 250 1.5 Hrs 150-180 85-110 20^30 Min 140 2-6 Hrs 110 110 70-90 6-9 Days . 70-90 2 Days 130 4 Hrs Cut .... . . ____ _______ 150 / Start Wet 350 . 60 Min \ Finish 97 ft 350-190 8-16 Hrs 180-200 150-190 1 Hr 120 2 Hrs 140-180 90 2-4 Hrs 70-90 4-6 Days Sec references at end of chapter. 750 CHAPTER 41. DRYING SYSTEMS Table 3. Drying Time and Conditions for Representative Materials3--Con. Material Temperature Deg F Per Cent Relative Humidity Dbtino Time 120-180Hops...............................:............................................................................. --*!& Ink printing....................................................... .TfrS? 1 70-300 300 300-450 200 140-180 78-95 90 80 110-145 250-270 350 100-180 160-220 90-110 140-180 350 Milk and other liquid foods spray dried..... ........... 135-300 Millboard sheets............ ....... . .. .... .... ..... 95 Moulds green sand C.I. flasks (one/ 8 in. thick 600 surface only exposed)_____-- 13 in. thick 700 Motors, field coils.... ............................. ...... ;........... 180 250 90-95 75-140 150 150 135-140 180 90-200 140 Paper wall, varnished^........ ......... ........................., 140-160 150 135 140 150 85 170 140 180 140 150 300 85-90 140-200 Rugs ......... 190 Salt 350 Sand loose 1 in. deep 300 Sausage casings..... 110 Shade cloth............................................................... 240 120 Soap......................................................._................. 100-125 Starch................................................ ........ 180-200 Stock feed mixed...................................................... 180-220 Storage battery plates......... ............................. :..... 100-110 250 Sugar.. .................................'......... ........... .............. 150-200 1.5-2 Hrs 1.5 Hrs 30 Min 85 70 10-30 4 Days 2-3 Days 6-10 Hrs 18-25 Min 3-180 Days 2-14 Days 24-48 Hrs 15 Min Instantaneous 10 Hrs 6 Hrs 13 Hrs 6 Hrs 6.5 Hrs 24 Hrs 35 8-24 Hrs 22-30 2.5 Hrs 3 Min 45 15 Min 1-2 Min 26 Hrs 24 Hrs 4 Hrs 6.5 Hrs 10 Hrs 8 Hrs 6-12 Hrs 1-2 Hrs 4-8 Hrs Rotary Drier 10-15 Min 5 Hrs 1-2 Hrs 20 Min 12-72 Hrs 1^1 Hrs 20-30 Min 90 for 24 Hrs Low for 6 Hrs 20-30 Min See references at end of chapter. 751