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WO2006058659A1 - Procede et dispositif de decoupe au jet d'eau - Google Patents

Procede et dispositif de decoupe au jet d'eau Download PDF

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Publication number
WO2006058659A1
WO2006058659A1 PCT/EP2005/012595 EP2005012595W WO2006058659A1 WO 2006058659 A1 WO2006058659 A1 WO 2006058659A1 EP 2005012595 W EP2005012595 W EP 2005012595W WO 2006058659 A1 WO2006058659 A1 WO 2006058659A1
Authority
WO
WIPO (PCT)
Prior art keywords
water
gas
water jet
workpiece
pressure
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Ceased
Application number
PCT/EP2005/012595
Other languages
German (de)
English (en)
Inventor
Wolfgang Danzer
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Linde GmbH
Original Assignee
Linde GmbH
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Linde GmbH filed Critical Linde GmbH
Publication of WO2006058659A1 publication Critical patent/WO2006058659A1/fr
Anticipated expiration legal-status Critical
Ceased legal-status Critical Current

Links

Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C7/00—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts
    • B24C7/0084—Equipment for feeding abrasive material; Controlling the flowability, constitution, or other physical characteristics of abrasive blasts the abrasive material being fed in a mixture of liquid and gas
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C1/00—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • B24C11/005—Selection of abrasive materials or additives for abrasive blasts of additives, e.g. anti-corrosive or disinfecting agents in solid, liquid or gaseous form
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C5/00—Devices or accessories for generating abrasive blasts
    • B24C5/02—Blast guns, e.g. for generating high velocity abrasive fluid jets for cutting materials
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B26—HAND CUTTING TOOLS; CUTTING; SEVERING
    • B26F—PERFORATING; PUNCHING; CUTTING-OUT; STAMPING-OUT; SEVERING BY MEANS OTHER THAN CUTTING
    • B26F3/00—Severing by means other than cutting; Apparatus therefor
    • B26F3/004—Severing by means other than cutting; Apparatus therefor by means of a fluid jet

Definitions

  • the present invention relates to a method and apparatus for water jet machining of workpieces.
  • the present invention is based on the technical problem of providing a method and a device with which water jet machining is made possible in an economical and effective manner.
  • the invention is directed to a method for water jet machining a workpiece, wherein the water as a water jet under pressure on the workpiece is directed and the workpiece is thereby abraded, characterized in that the water is added to a gas and the impact of the water jet on the workpiece by gas bubbles increased abrasion occurs, and to an apparatus for performing the method with a water jet nozzle for generating the water jet a high-pressure pump for generating the pressure for the water jet and a water pipe for supplying the high-pressure pump with water, characterized by a gas supply means for supplying the gas to the water upstream of the outlet of the water jet from the device.
  • the basic idea of the invention is to produce an increase in the abrasive effect by adding gas to the water used.
  • gas bubbles have a surprisingly strong abrasive effect as a result of violent changes in pressure, which in principle is known from cavitation damage, for example to turbine blades.
  • the water used can carry dissolved gas in it, which in the exit of the water jet from the nozzle and / or during
  • the gas can also be added in such a way that the gas is not or not completely dissolved in the water, so entrained in gaseous form with the water jet.
  • situations may occur in which all three options are present, ie a part of the gas unresolved is entrained, a part of the gas at the exit from the nozzle from the solution already passes into the gas phase and another part of the Gas on impact of the water jet on the workpiece surface merges into the gaseous form.
  • a gas offers an inexpensive, procedurally simple and, with regard to the residues, particularly unproblematic form of an improvement in the abrasion effect of a water jet. This is especially true when using a low-cost and environmentally benign gas that does not need to be recovered or collected after use.
  • a preferred example in the context of this invention is CO 2 , which is easy to dissolve in water and is available at low cost. CO 2 is anyway a component of the natural atmosphere and therefore harmless to the environment. Of course, it can also be used in the context of the invention in mixtures with other gases to produce certain effects.
  • the gas is added downstream from a high pressure pump which produces the pressure necessary for the jet of water.
  • a relatively low pressure location is used.
  • the gas supply line is arranged obliquely in the region of the opening in such a way that the gas flow forms an acute angle with the water flow.
  • Figure 1 shows schematically a device for water jet cutting according to this invention.
  • FIG. 2 shows for comparison a conventional apparatus for water-jet cutting with fixed addition of abrasive agent.
  • FIG. 3 shows a comparison of cutting experiments with the invention
  • FIG. 1 shows a highly schematic and partially sectional view of a water jet cutting device according to the invention. This one has
  • the pressurized water line 1 is supplied via a high-pressure pump 5 with water, which is connected via a water supply line 6 to a water network.
  • a Gas supply device 7 is added to CO 2 in an amount just below the solubility limit at the water pressure used for the water jet cutting device.
  • the water pressure can be, for example, in the range of 1000 bar. This is done in a manner not shown here in accordance with the principle of a water jet pump through a running at an acute angle to the water flow gas line 10, which meets a parallel to the water flow opening.
  • the gas flow should therefore be largely parallel to the flow of water and be employed only at a relatively low angle.
  • the CO2 dissolves well in the water, so that in this embodiment, a clean liquid jet reaches the nozzle 2.
  • FIG. 2 shows a conventional device of comparable design.
  • the gas supply device 7 is missing.
  • the high-pressure pump 5 and the water supply line 6 are omitted, in contrast to FIG. 1, a mixing chamber 8 with a lateral closes to the nozzle 2 in the high-pressure pipe 1
  • FIG. 3 shows the results of experiments.
  • the right column shows from top to bottom a kerf 1 1, ie a cross-sectional view, a plan view of the top and a bottom view of the underside of a machined with the inventive device of Figure 1 sheet.
  • the sheet was made of AJMgSi with 3 mm thickness.
  • the pressure in the high-pressure pipe 1 in this case was 360 mPa.
  • the workpiece was moved at a feed rate of 30 mm / min.
  • the left column shows corresponding images from top to bottom, but without the addition of CO2. It can be seen that only a half of the light metal sheet penetrating kerf was achieved in the conventional approach at the top left, whereas right above a completely severed sheet is seen. Accordingly, the upper side, middle line, left shows only a slightly widened erosion trace, while the right side with the dark line shows the passage of the water jet on the lower side. In the experiment with conventional water jet cutting the water jet has penetrated only selectively through the sheet. This is also shown in the bottom line, the left below a limited to a relatively short piece of track passage through the sheet shows, whereas right below a relatively clean led dividing line can be seen.
  • the invention provides an increase in performance of the conventional water jet cutting process without simultaneous disposal problems and at relatively low additional costs.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Life Sciences & Earth Sciences (AREA)
  • Forests & Forestry (AREA)
  • Perforating, Stamping-Out Or Severing By Means Other Than Cutting (AREA)

Abstract

L'invention concerne un procédé et un dispositif de découpe au jet d'eau, dans lequel du gaz est ajouté à l'eau utilisée, ce qui produit une action abrasive plus intense.
PCT/EP2005/012595 2004-11-29 2005-11-24 Procede et dispositif de decoupe au jet d'eau Ceased WO2006058659A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE200410057658 DE102004057658A1 (de) 2004-11-29 2004-11-29 Verfahren und Vorrichtung zur Wasserstrahlbearbeitung
DE102004057658.0 2004-11-29

Publications (1)

Publication Number Publication Date
WO2006058659A1 true WO2006058659A1 (fr) 2006-06-08

Family

ID=35907174

Family Applications (1)

Application Number Title Priority Date Filing Date
PCT/EP2005/012595 Ceased WO2006058659A1 (fr) 2004-11-29 2005-11-24 Procede et dispositif de decoupe au jet d'eau

Country Status (2)

Country Link
DE (1) DE102004057658A1 (fr)
WO (1) WO2006058659A1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115157127A (zh) * 2022-07-11 2022-10-11 重庆交通大学 一种可控连续加磨料钢缆除锈装置

Families Citing this family (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN104384042A (zh) * 2014-11-04 2015-03-04 苏州精创光学仪器有限公司 光学镜面金属薄膜表面抛光装置

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407632A1 (de) * 1973-02-19 1974-09-05 British Hydromechanics Fluessigkeitsstrahler
JPH08229435A (ja) * 1995-02-28 1996-09-10 Yasuo Kuroyanagi 新規な洗浄剤及び洗浄方法
RU2155105C1 (ru) * 1999-03-25 2000-08-27 Харламов Анатолий Иванович Способ создания кавитации в струе жидкости
US20040043704A1 (en) * 2002-08-30 2004-03-04 Mark Saberton Method and apparatus for high speed cutting

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE2407632A1 (de) * 1973-02-19 1974-09-05 British Hydromechanics Fluessigkeitsstrahler
JPH08229435A (ja) * 1995-02-28 1996-09-10 Yasuo Kuroyanagi 新規な洗浄剤及び洗浄方法
RU2155105C1 (ru) * 1999-03-25 2000-08-27 Харламов Анатолий Иванович Способ создания кавитации в струе жидкости
US20040043704A1 (en) * 2002-08-30 2004-03-04 Mark Saberton Method and apparatus for high speed cutting

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
DATABASE WPI Section Ch Week 199646, Derwent World Patents Index; Class D25, AN 1996-459684, XP002370943 *
PATENT ABSTRACTS OF JAPAN vol. 1997, no. 01 31 January 1997 (1997-01-31) *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN115157127A (zh) * 2022-07-11 2022-10-11 重庆交通大学 一种可控连续加磨料钢缆除锈装置
CN115157127B (zh) * 2022-07-11 2024-05-31 重庆交通大学 一种可控连续加磨料钢缆除锈装置

Also Published As

Publication number Publication date
DE102004057658A1 (de) 2006-06-01

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