Page 350 - Mechanical Engineer's Data Handbook

338 MECHANICAL ENGINEER’S DATA HANDBOOK

Plates, (continued) high density, 243, 247 principle. I654
rectangular, thermal conductivity, 131 specific speed concept. 171
clamped edges. 54 turning characteristics, 176 PVC (polyvinyl chloride). 244. 246, 247
simply supported, 54 Polytropic gas process, 104 density. 264
Platinum. Polyurethane, thermal conductivity. I3 I
applications, 234 adhesives for, 255 turning. drilling. milling properties. 194
coefficient of expansion, 265 as an adhesives, 252 Pyrometers, 278
density, 263 foam, 246
properties pure, 240 thermal conductivity, 132 Quartz, coefficient of expansion. 265
resistance temperature coefficient, 277 rubbers. 249
specific heat capacity, 1 IO Polyvinyl acetate adhesive, 252 Radiation.
thermal conductivity, 131 Polyvinyl alcohol adhesive, 252 heat, 135-7
thermoelectric sensitivity, 275 Polyvinyl chloride (PVC). 244, 246. 247 emissivity of surfaces, 1367
Plexiglas, 242 adhesives for, 255 Railway axle bearings. 91
Plumber’s solder. applications, 234 Poplar (timber). mechanical properties, 250 Rake angle, turning, 177
Plywood, thermal conductivity, 132 Porcelain, Rankin cycle,
Poisson’s ratio, definition, 1.5 coeffcient of expansion, 265 dry saturated steam, I I2
Polyacetal, 242 thermal conductivity, I32 with reheat. I13
Polyacrylate adhesive, 253 Porter governer. 75 with superheat, 112-13
Polyacrylic rubbers, 249 Potassium, thermoelectric sensitivity, 275 RankinGordon formula, struts buckling,
Polyamide adhesives, 253 Powdered metal, 47
Polyamides, 243 advantages, 236 Reaming, 179
adhesives for, 255 as clutch and brake material, 85-6 cutting lubricants, 181
Polycarbonate, friction coefficient with cast iron; chrome see olso Drilling
adhesives for, 255 plated steel, 85-6 Reciprocating masses, balancing, 70
drilling cutting speeds and feeds, 180 metals used, 236 Redux adhesive. 254
properties and applications, 244 process, 236 Refrigera tors,
turning characteristics, 176 Power, gas refrigeration cycle, 127-8
Polychloroprene adhesives, 252 automobiles, 78-9 pressure-enthalpy chart, 127
Polychloroprene rubbers, adhesives for, 255 definition, 59 vapour compression cycle, 127
Polyester, 245, 246, 248 metal cutting requirements. 192-3 Reheat Factor. steam turbines. 116
adhesives for, 255 SI equivalents. 293 Resilience.
Polyester acrylic adhesive, 253 PPMA. 242 shear. 6
Polyester (unsaturated) adhesives, 254 PPO (polypropylene oxide), 243 tension and compression, 6
Polyethersulphone. 243 Prandtl number, heat convection, 132, 135 Resistance temperature coefficients, 277
Polyethylene see Polythene Press tools, 202-3 Resistance thermometers. 277
Polyethylene terephthalate (PETP), 243 Pressure, Resolution of forces. 57
adhesives for, 255 in liquids, 146-7 Resorcinol formaldehyde (RF) adhesives,
Polyformaldehyde. adhesives for, 255 SI equivalents, 292 253
Pol yimides, Pressure measurement, Restitution. coefficient of. 59
laminated plastics, 246 barometers, 279 Reynolds number,
thermosets, 245, 254 Bourdon pressure gauge, 281 fluid flow, 148, I50
Polyisoprene natural rubber, 248 manometers, 279-80 heat convection. 132, 135
Polyphenylene oxide, 244 pressure transducers, 281 Rhodium, thermoelectric sensitivity, 275
Polyphenylene sulphide, 244 pressure units, 279 Rings, bending stresses, 29-31
Polypropylene, 244 Press work, 202-3 Rivets,
adhesives for. 255 Projectiles, 63 stress in. 12
density, 264 Proof stress, steel, 287 types Of, 297-8
drilling cutting speeds and feeds, 180 Propane, Rockets, 63-4
turning cutting speeds and feeds, 176 boiling point, 109 Rockwell hardness, 239, 285
Polypropylene oxide (PPO). 243. 247 density. 264 Rock wool, thermal conductivity, 132
Polystyrene, formula and molecular weight, 140 Rod, uniform. centre of percussion. 60
adhesives for, 255 specific heat capacity, gas constant and Rolled metal,
applications, 238, 244, 247 molecular weight, 1 IO process characteristics, 172
density, 264 Propene, formula and molecular weight, rolled sections, 204-5
drilling, 180, 194 140 beams, 204
expanded, 246 Protective coatings, corrosion prevention, channels, 204
high-density foam, 246 240 columns, 204
milling properties, 194 PTFE (polytetrafluoroethylene). 243. 247 joists, 204
properties, 238, 244, 247 density, 264 rolling mills, 202
turning, 176, 194 thermal conductivity, 13 I Roller bearings,
Polysulphide rubber adhesives, 252 turning, drilling, milling properties. 194 contact stresses on roller and surfaces,
Polysulphide rubbers, 249 Pulleys, 67 52
Polysulphone, 244 Pump bearings, 91 see also Bearings
Polytetrafluoroethylene (FTFE), 243, 247 Pumps, centrifugal. Rolling resistance, automobiles, 77
Polythene (polyethylene), cavitation, 168 Roots blower, 125
adhesives for, 255 characteristics, 167-8 Rope, wire, factors of safety, 309
density, 264 head. 166 Rose’s alloy, 237
drilling cutting speeds and feeds, 180 inlet angles. 167 Rotameter. 282
foams, 243,246 power and efficiency, I67 Rotating masses. balancing. 68-9