WATER JET CONFERENCE - Waterjet Technology Association

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Figure 8. Laser beam concentrated on the center of the water jet and segment action on cutting material. 25
Page 1 and 2: Proceedings of the Second U.S. WATE
Page 3 and 4: Visualization of the Central Core o
Page 5 and 6: A Status Report on the Conceptual D
Page 7 and 8: SESSION 7 - CIVIL & INDUSTRIAL Chai
Page 9 and 10: Cutting Hard Rock With Abrasive-Ent
Page 11 and 12: frictional and piping component rel
Page 13 and 14: R = a1 ⋅ A1 A2 a2 I = 2H o Q o
Page 15 and 16: attenuation of the output. The tran
Page 17 and 18: Figure 1. Branch System Modulator F
Page 19 and 20: Figure 5. Modulation Response for B
Page 21 and 22: Figure 9. Modulation response for s
Page 23 and 24: can be used for any form of input.
Page 25 and 26: with a cylindrical shape to the jet
Page 27 and 28: m/s. The range of power found from
Page 29 and 30: Figure 3. Power vs nozzle diameter
Page 31: Figure 5. Frequency vs length of th
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.
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Figure 11. Boundary layer Solution
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Figure 14. Nozzle exit momentum thi
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Figure 18. Examination of separatio
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Figure 22. Effect of inlet b 1 cond
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NAME: Mohamed Hashish DISCUSSION CO
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APPROACH Most photographic techniqu
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Processing Using reversal processin
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Figure 3. Process schematic Figure
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FIGURE 9. INNER CORE OF PERCUSSIVE
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AN EXTRUSION-TYPE PULSED JET DEVICE
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Both the piston and the fluid are i
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C 1 = M p SA p + S + L c S 103 (9)
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or, in dimensionless form t * ( X *
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D p = 107 8 E j S V j For a given d
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loading in this instance was intern
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7. Voytsekhovskiy, B. V., Nikolayev
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Figure 5. Jet cummulative kinetic e
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Figure 9. Gas spring force. Figure
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Figure 13. Extrusion Device Assembl
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Table 1. Craters in high-strength c
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LABORATORY INVESTIGATION OF SOIL CU
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Materials Tested Four different soi
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When a continuous water jet impinge
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These observations indicate that, f
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The square of the void ratio was co
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1. Mellor, M.(1972), Some Generaliz
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Figure 4. Effect of Saturation on t
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Table 1. Predicted and Observed Dep
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from poisonous gas. On the other ha
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The injection volume from the nozzl
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volume. These results lead us to a
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Figure 1. Hydraulic and water circu
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Figure 7. Theoretical required powe
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NAME: Mohamed Hashish COMPANY: Flow
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TRACTION FORCE IN LBS FOR "SKIPJACK
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If engine driven equipment is parke
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Repair all leaks that you find, but
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pressure. As the job progresses, th
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Figure 4. Line Moleing. 157
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the battery and placed onto the ope
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equired, and although it is conveni
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Throughout the development of the s
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Figure 3. Tracing motion lance carr
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NAME R. Pootmans COMPANY: Indescor
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cleaning ability. Therefore, in any
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Maximum Power Nozzle For any given
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NOZZLE TYPE DIAM FLOW PRESS POWER (
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and the pressure loss through the p
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DISCUSSION NAME D. Eddingfield COMP
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The water jet which issues from oth
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ather than those on the outer edges
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Figure 5: Path of a cavitating jet
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WATER JET CLEANING SPEEDS - THEORET
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Substituting field terms: (Zublin,
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"CE" Values Numerous observations h
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Chart 1. Standoff vs Power Chart 2.
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DISCUSSION NAME: W. G. Howells COMP
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CLEANING AND CUTTING WITH SELF-RESO
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This trend of increased pulsed jet
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high velocity tests have been run r
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REFERENCES 1. Chahine, G. L., Johns
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Figure 3. Pressure fluctuations in
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Figure 7. Pressure fluctuations in
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SERVOJET nozzles were seen to out p
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High pressure pump: *Drive 120 to 1
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program of the European Community f
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A STATUS REPORT ON THE CONCEPTUAL D
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Front-end loaders loaded the broken
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The next experiment involved cuttin
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showed that sand was mined at a top
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Figure 1. Schematic diagram showing
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Table 4. Summary of cutting tests u
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Table 5. Cutting tests using mobile
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NAME: Gerald Zink COMPANY: StoneAge
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Disadvantages of the technique begi
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adequate straightness (Fig. 2). The
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Figure 1. Schematic of water jet qu
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NAME: Jerry Hagers COMPANY: Sprayin
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Based on knowledge gained throughou
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Since the basic suitability of the
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ACKNOWLEDGEMENT The research and de
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Figure 5. Coarsely sized coal. Figu
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Figure. 9 Test array at Bergbau-For
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Montana and Brazil during the gold
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coal-dependent Poland sought a high
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increase in haulage and energy requ
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Is water jet cutting the next major
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Figure 3. Emergence of high pressur
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figure 7. Technology evolution mode
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THE NEW TECHNOLOGY OF HIGH PRESSURE
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immediately mounted onto the contem
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probably in combination with mechan
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HYDRAULIC MINING STUDIES OF STORM K
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may have to creating free faces, th
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TABLE II. Quality and Reserves Seam
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Figure 1. Location Figure 1A. Storm
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Figure 4. Pump Horsepower Figure 5.
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end of the cylinder (Fig. 2). The c
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Figure 2. Final test chamber design
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Figure 6. Non-dimensional plot for
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STATUS OF HYDRAULIC COAL MINING IN
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Figure 2. (from Ref. 1) Figure 3. (
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PRELIMINARY PRACTICE IN THE USE OF
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Through analysis and comparative st
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W2 is the volume of coal broken out
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Figure 2. Correlation curves of the
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Figure 6. The photograph of a swing
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A PREVIEW OF METHODS FOR CUTTING CO
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shell is "shot," the energy is tran
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directed at this zone which removes
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Commercial equipment capable of cut
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Table 3. Combinations of concrete c
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ANSWER: Pulsed jets were not noted
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of the blades or the teeth of the s
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fish, frozen ocean perch (red fish)
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Report LTR GD-62, Division of Mecha
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2.4 Cutting frozen blocks of cod fi
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Figure 11. Fillet cuts of fresh cod
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Figure 23. Removing baked enamel fr
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arrier alone requires keying into a
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The % bentonite slurry in air notch
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Table 1. Life cycle cost comparison
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Figure 6. Slurry jet in air notchin
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DISCUSSION NAME: George Savanick CO
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A brief description of the soil rem
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through a multi-passage swivel moun
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clay was above that normally measur
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ACKNOWLEDGEMENTS The authors wish t
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Figure 7. Mud mixing and filtering
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WATER JET ASSISTED MINING TOOLS: WH
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where S = A=K t*W*d c+(N-1)*K t*W*d
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(which are highly desirable in most
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REFERENCES i) Crow, S. C., 1972, A
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HIGH-PRESSURE WATER JET-ASSISTED TU
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CUTTING OF THE ROADWAY PROFILE The
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level for open jets can largely be
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Figure 7 High-pressure jet assisted
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Figure 15. Rock destruction by puls
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NAME: R. Pootmans COMPANY: Indescor
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3-ft. and a 6-ft. diameter laborato
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The machine thrust load is measured
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The drilling fixture is designed to
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strictly controlled conditions and
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Figure 2., Rock face created by the
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HYBRID ROCK CUTTING : FUNDAMENTAL I
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The results indicate that the penet
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Cutting speed has different effects
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Rock Property Springwell Sandstone
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Figure 2. Hybrid cutting - before a
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Figure 11. Figure 12. Figure 13. Fi
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NAME: John E. Wolgamott COMPANY: St
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high-velocity water jet is based on
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After this research of the schemes
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combined breakage of coal massif in
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standard regime (Ref. 7). For that
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5. It is established that for the h
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392
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Figure 3. Dependence of specific en
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Figure 8 Forces Pz and Py and energ
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NAME: George Savanick COMPANY: Bure
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Figure 2 (a) Figure 2. Strip chart
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EXPERIMENTAL STUDIES OF CUTTING WIT
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On the other side of the curve (Fig
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Effect of Number of Passes Dependin
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A small traversal distance creates
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4. Crow, S. C., 1973, "A Theory of
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Figure 4. Effect of Traverse rate o
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Figure 11.Visualization of cutting
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Figure 15. Bottom surface penetrati
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2. PRINCIPLE OF ABRASIVE WATERJETS
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application with through cutting, a
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fraction of particle fragmentation,
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- High pressures - Noise levels - H
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However, the thermal devices may pr
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Table 2a. Abrasive jet advantages f
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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
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ANSWER: We do not have quantitative
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L ITERATURE REVIEW Abrasive Fluid J
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Because of the shielding provided b
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to their crystalline structure. The
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makes it impossible to space two cu
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SUMMARY AND CONCLUSIONS The data co
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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
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NAME: Fun-Den Wang COMPANY: Colorad
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SLURRY FEEDS. In order to get aroun
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and radiused, Fig 10 shows a typica
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Quality of the Jet. In a normal cle
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minute, 8000 psi and 12 lbs copper
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Figure 1. General cleaning with Fig
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Figure 9. Relationship between part
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Figure 21. Reinforced concrete cut
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over its rivals in reliability, eas
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Operator B. who had approximately o
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TABLE V Casting cleaning impellors
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Having seen many blades of a simila
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Figure 5. Comparison of charges and
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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
show all

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