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WATER JET CONFERENCE - Waterjet Technology Association

WATER JET CONFERENCE - Waterjet Technology Association

WATER JET CONFERENCE - Waterjet Technology

Proceedings of the Second U.S. WATER JET CONFERENCE May 24-26, 1983 Rolla, Missouri Edited by: David A. Summers and Frank F. Haston Sponsored by School of Mines & Metallurgy, University of Missouri-Rolla Published by: University of Missouri-Rolla, Rolla, Missouri 65401 The University of Missouri-Rolla has granted the WaterJet Technology Association the right to reprint, on the Association's web site, the Proceedings of the Second U.S. Water Jet Conference held in 1983 at the University of Missouri-Rolla. Please Note. This text is a scanned in version of the original. Because of some limitations in our programming the original pagination has been changed. Other than that we have tried to make the text a little more readable by increasing the spacing between paragraphs, but the text itself has been (subject to possible OCR misinterpretations) left as written.

  • Page 2 and 3: SESSION 1 - THEORETICAL 2nd U. S. W
  • Page 4 and 5: Developments in Cleaning Coke Oven
  • Page 6 and 7: The New Technology of High Pressure
  • Page 8 and 9: Design and Operation of Two Large-S
  • Page 10 and 11: DIMENSIONLESS PIPE LENGTH ANALYSIS
  • Page 12 and 13: system. Examples of the component m
  • Page 14 and 15: To illustrate how this maximum area
  • Page 16 and 17: 6. Johnson, V. E., Conn, A. F., Lin
  • Page 18 and 19: Figure 3. Modulation Response for B
  • Page 20 and 21: Figure 7. Response spectrum of bran
  • Page 22 and 23: DISCUSSION NAME: Eugene B. Nebeker
  • Page 24 and 25: AN ANALYSIS OF ONE POSSIBILITY FOR
  • Page 26 and 27: "water hammer" pressure level on th
  • Page 28 and 29: 6. Mazurkiewicz, M. Barker, C.R., a
  • Page 30 and 31: Figure 4. Frequency vs length of je
  • Page 32: Figure 8. Laser beam concentrated o
  • Page 35 and 36: STANDOFF DISTANCE IMPROVEMENT USING
  • Page 37 and 38: discharge modulation. Within each b
  • Page 39 and 40: or air in the vicinity of the disch
  • Page 41 and 42: psig. Figure 7 shows these units re
  • Page 43 and 44: Hence, this high-pressure testing g
  • Page 45 and 46: Figure 2. MECHANISM OF PERCUSSIVE J
  • Page 47 and 48: FIGURE 7. HALLIBURTON SERVICES HT-4
  • Page 49 and 50: NAME: David Eddingfield COMPANY: SI
  • Page 51 and 52: The various parameters in these equ
  • Page 53 and 54:

    hole together form an axisymmetric

  • Page 55 and 56:

    RESULTS AND DISCUSSION A series of

  • Page 57 and 58:

    1. Bowden, F.F., and Brunton, J.H.,

  • Page 59 and 60:

    NOZZLE DESIGN FOR COHERENT WATER JE

  • Page 61 and 62:

    y distance normal to nozzle wall We

  • Page 63 and 64:

    In this paper attention is not cent

  • Page 65 and 66:

    2 e ′ r 2 ( n e ′ + s e ′ −

  • Page 67 and 68:

    In the limit as h and k tend to zer

  • Page 69 and 70:

    Relaminarization Phenomena Reviews

  • Page 71 and 72:

    Cf = 0.3exp( −1.33H)(lnRe ) ( −

  • Page 73 and 74:

    The majority of the uncertainty ass

  • Page 75 and 76:

    0.16 may be expected. Development o

  • Page 77 and 78:

    the local value of θ larger due to

  • Page 79 and 80:

    may cause flow downstream over hydr

  • Page 81 and 82:

    3. Birkhoff, G. and Zarantonello, E

  • Page 83 and 84:

    Figure 4. Potential Flow solution s

  • Page 85 and 86:

    Figure 7. Nozzle Designs Figure 8.

  • Page 87 and 88:

    Figure 11. Boundary layer Solution

  • Page 89 and 90:

    Figure 14. Nozzle exit momentum thi

  • Page 91 and 92:

    Figure 18. Examination of separatio

  • Page 93 and 94:

    Figure 22. Effect of inlet b 1 cond

  • Page 95 and 96:

    NAME: Mohamed Hashish DISCUSSION CO

  • Page 97 and 98:

    APPROACH Most photographic techniqu

  • Page 99 and 100:

    Processing Using reversal processin

  • Page 101 and 102:

    Figure 3. Process schematic Figure

  • Page 103 and 104:

    FIGURE 9. INNER CORE OF PERCUSSIVE

  • Page 105 and 106:

    AN EXTRUSION-TYPE PULSED JET DEVICE

  • Page 107 and 108:

    Both the piston and the fluid are i

  • Page 109 and 110:

    C 1 = M p SA p + S + L c S 103 (9)

  • Page 111 and 112:

    or, in dimensionless form t * ( X *

  • Page 113 and 114:

    D p = 107 8 E j S V j For a given d

  • Page 115 and 116:

    loading in this instance was intern

  • Page 117 and 118:

    7. Voytsekhovskiy, B. V., Nikolayev

  • Page 119 and 120:

    Figure 5. Jet cummulative kinetic e

  • Page 121 and 122:

    Figure 9. Gas spring force. Figure

  • Page 123 and 124:

    Figure 13. Extrusion Device Assembl

  • Page 125 and 126:

    Table 1. Craters in high-strength c

  • Page 127 and 128:

    LABORATORY INVESTIGATION OF SOIL CU

  • Page 129 and 130:

    Materials Tested Four different soi

  • Page 131 and 132:

    When a continuous water jet impinge

  • Page 133 and 134:

    These observations indicate that, f

  • Page 135 and 136:

    The square of the void ratio was co

  • Page 137 and 138:

    1. Mellor, M.(1972), Some Generaliz

  • Page 139 and 140:

    Figure 4. Effect of Saturation on t

  • Page 141 and 142:

    Table 1. Predicted and Observed Dep

  • Page 143 and 144:

    from poisonous gas. On the other ha

  • Page 145 and 146:

    The injection volume from the nozzl

  • Page 147 and 148:

    volume. These results lead us to a

  • Page 149 and 150:

    Figure 1. Hydraulic and water circu

  • Page 151 and 152:

    Figure 7. Theoretical required powe

  • Page 153 and 154:

    NAME: Mohamed Hashish COMPANY: Flow

  • Page 155 and 156:

    TRACTION FORCE IN LBS FOR "SKIPJACK

  • Page 157 and 158:

    If engine driven equipment is parke

  • Page 159 and 160:

    Repair all leaks that you find, but

  • Page 161 and 162:

    pressure. As the job progresses, th

  • Page 163 and 164:

    Figure 4. Line Moleing. 157

  • Page 165 and 166:

    the battery and placed onto the ope

  • Page 167 and 168:

    equired, and although it is conveni

  • Page 169 and 170:

    Throughout the development of the s

  • Page 171 and 172:

    Figure 3. Tracing motion lance carr

  • Page 173 and 174:

    NAME R. Pootmans COMPANY: Indescor

  • Page 175 and 176:

    cleaning ability. Therefore, in any

  • Page 177 and 178:

    Maximum Power Nozzle For any given

  • Page 179 and 180:

    NOZZLE TYPE DIAM FLOW PRESS POWER (

  • Page 181 and 182:

    and the pressure loss through the p

  • Page 183 and 184:

    DISCUSSION NAME D. Eddingfield COMP

  • Page 185 and 186:

    The water jet which issues from oth

  • Page 187 and 188:

    ather than those on the outer edges

  • Page 189 and 190:

    Figure 5: Path of a cavitating jet

  • Page 191 and 192:

    WATER JET CLEANING SPEEDS - THEORET

  • Page 193 and 194:

    Substituting field terms: (Zublin,

  • Page 195 and 196:

    "CE" Values Numerous observations h

  • Page 197 and 198:

    Chart 1. Standoff vs Power Chart 2.

  • Page 199 and 200:

    DISCUSSION NAME: W. G. Howells COMP

  • Page 201 and 202:

    CLEANING AND CUTTING WITH SELF-RESO

  • Page 203 and 204:

    This trend of increased pulsed jet

  • Page 205 and 206:

    high velocity tests have been run r

  • Page 207 and 208:

    REFERENCES 1. Chahine, G. L., Johns

  • Page 209 and 210:

    Figure 3. Pressure fluctuations in

  • Page 211 and 212:

    Figure 7. Pressure fluctuations in

  • Page 213 and 214:

    SERVOJET nozzles were seen to out p

  • Page 215 and 216:

    High pressure pump: *Drive 120 to 1

  • Page 217 and 218:

    program of the European Community f

  • Page 219 and 220:

    A STATUS REPORT ON THE CONCEPTUAL D

  • Page 221 and 222:

    Front-end loaders loaded the broken

  • Page 223 and 224:

    The next experiment involved cuttin

  • Page 225 and 226:

    showed that sand was mined at a top

  • Page 227 and 228:

    Figure 1. Schematic diagram showing

  • Page 229 and 230:

    Table 4. Summary of cutting tests u

  • Page 231 and 232:

    Table 5. Cutting tests using mobile

  • Page 233 and 234:

    NAME: Gerald Zink COMPANY: StoneAge

  • Page 235 and 236:

    Disadvantages of the technique begi

  • Page 237 and 238:

    adequate straightness (Fig. 2). The

  • Page 239 and 240:

    Figure 1. Schematic of water jet qu

  • Page 241 and 242:

    NAME: Jerry Hagers COMPANY: Sprayin

  • Page 243 and 244:

    Based on knowledge gained throughou

  • Page 245 and 246:

    Since the basic suitability of the

  • Page 247 and 248:

    ACKNOWLEDGEMENT The research and de

  • Page 249 and 250:

    Figure 5. Coarsely sized coal. Figu

  • Page 251 and 252:

    Figure. 9 Test array at Bergbau-For

  • Page 253 and 254:

    Montana and Brazil during the gold

  • Page 255 and 256:

    coal-dependent Poland sought a high

  • Page 257 and 258:

    increase in haulage and energy requ

  • Page 259 and 260:

    Is water jet cutting the next major

  • Page 261 and 262:

    Figure 3. Emergence of high pressur

  • Page 263 and 264:

    figure 7. Technology evolution mode

  • Page 265 and 266:

    THE NEW TECHNOLOGY OF HIGH PRESSURE

  • Page 267 and 268:

    immediately mounted onto the contem

  • Page 269 and 270:

    probably in combination with mechan

  • Page 271 and 272:

    HYDRAULIC MINING STUDIES OF STORM K

  • Page 273 and 274:

    may have to creating free faces, th

  • Page 275 and 276:

    TABLE II. Quality and Reserves Seam

  • Page 277 and 278:

    Figure 1. Location Figure 1A. Storm

  • Page 279 and 280:

    Figure 4. Pump Horsepower Figure 5.

  • Page 281 and 282:

    end of the cylinder (Fig. 2). The c

  • Page 283 and 284:

    Figure 2. Final test chamber design

  • Page 285 and 286:

    Figure 6. Non-dimensional plot for

  • Page 287 and 288:

    STATUS OF HYDRAULIC COAL MINING IN

  • Page 289 and 290:

    Figure 2. (from Ref. 1) Figure 3. (

  • Page 291 and 292:

    PRELIMINARY PRACTICE IN THE USE OF

  • Page 293 and 294:

    Through analysis and comparative st

  • Page 295 and 296:

    W2 is the volume of coal broken out

  • Page 297 and 298:

    Figure 2. Correlation curves of the

  • Page 299 and 300:

    Figure 6. The photograph of a swing

  • Page 301 and 302:

    A PREVIEW OF METHODS FOR CUTTING CO

  • Page 303 and 304:

    shell is "shot," the energy is tran

  • Page 305 and 306:

    directed at this zone which removes

  • Page 307 and 308:

    Commercial equipment capable of cut

  • Page 309 and 310:

    Table 3. Combinations of concrete c

  • Page 311 and 312:

    ANSWER: Pulsed jets were not noted

  • Page 313 and 314:

    of the blades or the teeth of the s

  • Page 315 and 316:

    fish, frozen ocean perch (red fish)

  • Page 317 and 318:

    Report LTR GD-62, Division of Mecha

  • Page 319 and 320:

    2.4 Cutting frozen blocks of cod fi

  • Page 321 and 322:

    Figure 11. Fillet cuts of fresh cod

  • Page 323 and 324:

    Figure 23. Removing baked enamel fr

  • Page 325 and 326:

    arrier alone requires keying into a

  • Page 327 and 328:

    The % bentonite slurry in air notch

  • Page 329 and 330:

    Table 1. Life cycle cost comparison

  • Page 331 and 332:

    Figure 6. Slurry jet in air notchin

  • Page 333 and 334:

    DISCUSSION NAME: George Savanick CO

  • Page 335 and 336:

    A brief description of the soil rem

  • Page 337 and 338:

    through a multi-passage swivel moun

  • Page 339 and 340:

    clay was above that normally measur

  • Page 341 and 342:

    ACKNOWLEDGEMENTS The authors wish t

  • Page 343 and 344:

    Figure 7. Mud mixing and filtering

  • Page 345 and 346:

    WATER JET ASSISTED MINING TOOLS: WH

  • Page 347 and 348:

    where S = A=K t*W*d c+(N-1)*K t*W*d

  • Page 349 and 350:

    (which are highly desirable in most

  • Page 351 and 352:

    REFERENCES i) Crow, S. C., 1972, A

  • Page 353 and 354:

    HIGH-PRESSURE WATER JET-ASSISTED TU

  • Page 355 and 356:

    CUTTING OF THE ROADWAY PROFILE The

  • Page 357 and 358:

    level for open jets can largely be

  • Page 359 and 360:

    Figure 7 High-pressure jet assisted

  • Page 361 and 362:

    Figure 15. Rock destruction by puls

  • Page 363 and 364:

    NAME: R. Pootmans COMPANY: Indescor

  • Page 365 and 366:

    3-ft. and a 6-ft. diameter laborato

  • Page 367 and 368:

    The machine thrust load is measured

  • Page 369 and 370:

    The drilling fixture is designed to

  • Page 371 and 372:

    strictly controlled conditions and

  • Page 373 and 374:

    Figure 2., Rock face created by the

  • Page 375 and 376:

    HYBRID ROCK CUTTING : FUNDAMENTAL I

  • Page 377 and 378:

    The results indicate that the penet

  • Page 379 and 380:

    Cutting speed has different effects

  • Page 381 and 382:

    Rock Property Springwell Sandstone

  • Page 383 and 384:

    Figure 2. Hybrid cutting - before a

  • Page 385 and 386:

    Figure 11. Figure 12. Figure 13. Fi

  • Page 387 and 388:

    NAME: John E. Wolgamott COMPANY: St

  • Page 389 and 390:

    high-velocity water jet is based on

  • Page 391 and 392:

    After this research of the schemes

  • Page 393 and 394:

    combined breakage of coal massif in

  • Page 395 and 396:

    standard regime (Ref. 7). For that

  • Page 397 and 398:

    5. It is established that for the h

  • Page 399 and 400:

    392

  • Page 401 and 402:

    Figure 3. Dependence of specific en

  • Page 403 and 404:

    Figure 8 Forces Pz and Py and energ

  • Page 405 and 406:

    NAME: George Savanick COMPANY: Bure

  • Page 407 and 408:

    Figure 2 (a) Figure 2. Strip chart

  • Page 409 and 410:

    EXPERIMENTAL STUDIES OF CUTTING WIT

  • Page 411 and 412:

    On the other side of the curve (Fig

  • Page 413 and 414:

    Effect of Number of Passes Dependin

  • Page 415 and 416:

    A small traversal distance creates

  • Page 417 and 418:

    4. Crow, S. C., 1973, "A Theory of

  • Page 419 and 420:

    Figure 4. Effect of Traverse rate o

  • Page 421 and 422:

    Figure 11.Visualization of cutting

  • Page 423 and 424:

    Figure 15. Bottom surface penetrati

  • Page 425 and 426:

    2. PRINCIPLE OF ABRASIVE WATERJETS

  • Page 427 and 428:

    application with through cutting, a

  • Page 429 and 430:

    fraction of particle fragmentation,

  • Page 431 and 432:

    - High pressures - Noise levels - H

  • Page 433 and 434:

    However, the thermal devices may pr

  • Page 435 and 436:

    Table 2a. Abrasive jet advantages f

  • Page 437 and 438:

    Figure 3. High-speed waterjet. Figu

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    a) shaped cutting b) top view of ke

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    Figure 13 Estimated hourly costs of

  • Page 443 and 444:

    ANSWER: We do not have quantitative

  • Page 445 and 446:

    L ITERATURE REVIEW Abrasive Fluid J

  • Page 447 and 448:

    Because of the shielding provided b

  • Page 449 and 450:

    to their crystalline structure. The

  • Page 451 and 452:

    makes it impossible to space two cu

  • Page 453 and 454:

    SUMMARY AND CONCLUSIONS The data co

  • Page 455 and 456:

    Figure 3. Comparison of depth of cu

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    Figure 7. Effect of multiple passes

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    Figure 11. Granite specimen cut wit

  • Page 461 and 462:

    NAME: Fun-Den Wang COMPANY: Colorad

  • Page 463 and 464:

    SLURRY FEEDS. In order to get aroun

  • Page 465 and 466:

    and radiused, Fig 10 shows a typica

  • Page 467 and 468:

    Quality of the Jet. In a normal cle

  • Page 469 and 470:

    minute, 8000 psi and 12 lbs copper

  • Page 471 and 472:

    Figure 1. General cleaning with Fig

  • Page 473 and 474:

    Figure 9. Relationship between part

  • Page 475 and 476:

    Figure 21. Reinforced concrete cut

  • Page 477 and 478:

    over its rivals in reliability, eas

  • Page 479 and 480:

    Operator B. who had approximately o

  • Page 481 and 482:

    TABLE V Casting cleaning impellors

  • Page 483 and 484:

    Having seen many blades of a simila

  • Page 485 and 486:

    Figure 5. Comparison of charges and

  • Page 487 and 488:

    POLYMERBLASTING - A CHEMIST'S POINT

  • Page 489 and 490:

    An additional application for polym

  • Page 491 and 492:

    water as being linearly aligned in

  • Page 493 and 494:

    of Missouri-Rolla), and Mr. Casper

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