See Minimum Achievable Residual Unbalance Unbalance in machinery.
Trang 1Thermal growth, 250–256
Thermal sprays, high-velocity, 582–584, 583t–584t
Thiokol, 595–596
Thrust bearing, 522
check, 53, 55
spray-lubed, 522
Thrust collars, 489f, 515, 520, 522, 524
Thrust errors, 523
Thrust load, 414, 422f, 522–523
TIR See Radial runouts (TIR)
Titanium dioxide, 541, 542f
Torque
bolts, 157, 165, 172t–173t
gaskets, 157, 158t, 160t, 162t, 164t, 165
Torque tables, 157, 158t, 159t, 160t, 161t, 162t, 163t, 164t
Torque wrenches, 165, 182
Traverse test See Minimum Achievable Residual Unbalance
Triboloy 700, 582
Tungsten carbide
coatings, 556, 557f, 559–560
diffusion alloys and, 578
Tungsten carbine
composite, 548
deposit, 548
Turbine rotor, 295
Turbine rotor shafts, 473
Turbocharged engines, 568–569
Turbotrain T/A engineers, 34–35, 38– 40, 42
Turnaround (T/A), 33
Twisting and stranding machine, unbalance vibration in, 345,
346f
Type R standard fit bearings, 415
UmarTest See Minimum Achievable Residual Unbalance
Unbalance in machinery See also Machinery balance
angle of lag in, 269–270, 269f, 270f
bearing runout resulting in, 274–275, 274f
center-of-gravity displacement in, 270–273, 271f
correction plane interference or cross effect in, 282–284,
282f, 283f
eccentricity in, 270, 271f, 273
effects of, 260, 268
manufacturing processes as cause of, 260
mass correction in, 263
nonsymmetry in use causing, 260
nonsymmetry of design causing, 260
phase angle of, 280, 283
quasi-static condition of, 266, 266f, 267f
resonance in, 268–269
static or force, 262–263, 263f, 264f, 273f
types of, 262–267
unbalance mass as cause in, 282
uneven mass distribution in, 261
units of, 261–262, 262f
variation within materials causing, 259
Universally ground bearings, 410
UTEX HTCR fluororubber, 597, 597t
Vanadium carbide, 541, 542f Vectometer instrumentation, 333, 333f VIBROTEST analyzer, 339f, 347f Vickers Diamond Pyramid, 575 Viton, fluorel (FKM), 592 Water injection pump, 467, 467f, 468f, 470, 471f, 472 overlay, 471f
Water resistance, 591 Weak spot management, 3 Wear life, 561 Wear rates, 567–568, 567t, 570 Wear resistance, 560 Welding bead width of, 465 bulk, 540, 572 coating thickness and, 462 cold straightening, 466 composition of materials in, 463t cracking after, 548
distortion, 462 feasibility of, 462– 466 full fusion, 462 fusion, 544 gas metal-arc, 539, 540 gas tungsten-arc, 540, 549 hard-surfacing techniques for, 539–540, 544, 545
of highly loaded rotors, 497 interpass temperature in, 466 overlay thickness/material, 462, 464 oxyacetylene, 473, 474, 479, 540, 549, 551t procedure, 465
protecting surface loss and, 539–540 pump shafts, other equipment and, 461– 462 repair area, 468f
repair techniques for, 464– 466, 493f shaft materials unsuitable for, 464– 465 shaft preparation in, 464– 465, 465f shielded metal-arc, 539, 549, 551t sleeving, 461
speed, 466 spiral, sequence, 466f submerged metal arc, 469, 540 technique, 465
tests, 545 Wettability, 565 Work order costing systems cost list during life of, 18 cost summary listings of, 18 cost-related problems defined by, 18 current month cost transactions for, 18 Work order planning and scheduling computer-based system for, 20 inspection-support systems for, 20 skills inventory file system for, 20 Zinc primer, inorganic, 108–109, 108f