EP1951475B1 - Jet process for cleaning and removing layers from long objects - Google Patents

Jet process for cleaning and removing layers from long objects Download PDF

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Publication number
EP1951475B1
EP1951475B1 EP06818421A EP06818421A EP1951475B1 EP 1951475 B1 EP1951475 B1 EP 1951475B1 EP 06818421 A EP06818421 A EP 06818421A EP 06818421 A EP06818421 A EP 06818421A EP 1951475 B1 EP1951475 B1 EP 1951475B1
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EP
European Patent Office
Prior art keywords
jet
jet device
gas flow
cleaning
carrier gas
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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.)
Not-in-force
Application number
EP06818421A
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German (de)
French (fr)
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EP1951475A2 (en
Inventor
Jens-Werner Kipp
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Individual
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Individual
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    • 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
    • B24C1/003—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods using material which dissolves or changes phase after the treatment, e.g. ice, CO2
    • 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
    • B24C1/08—Methods for use of abrasive blasting for producing particular effects; Use of auxiliary equipment in connection with such methods for polishing surfaces, e.g. smoothing a surface by making use of liquid-borne abrasives
    • B24C1/086—Descaling; Removing coating films

Definitions

  • the dry ice blasting process is a process that has been used in the industrial sector for many years. From the patent DE 102 43 693 B3, 2004.04.01 , A method is known that produced directly in a jet gun of liquid carbon dioxide dry snow or dry ice particles, which are then fed into a carrier gas stream and blasted at high speed through a nozzle to be cleaned surfaces.
  • the object of the invention is to clean longer parts with relatively small length to the small diameter or small cross-sectional area effectively and quickly by blasting.
  • This object is achieved according to the invention by adding dry snow or dry ice or a solid granulate to the carrier gas stream as blasting agent, wherein in the case of solid granules, this solid granules and / or the carrier gas stream additionally have a refrigerant, such as e.g. cold nitrogen is added.
  • a refrigerant such as e.g. cold nitrogen
  • the blasting agent preferably concentrates in the carrier stream in the middle. This results in a good cleaning effect of the surfaces of longitudinal in the carrier stream - preferably in the middle and preferably opposite to the carrier flow-guided parts.
  • a nozzle - preferably a convergent-divergent nozzle or a Laval nozzle - attached, is introduced by the object to be cleaned in the device and at the same time performs the final cleaning of the object to be cleaned.
  • the execution of the object to be cleaned preferably takes place downstream of each other of the nozzle.
  • the design and, if required, the entire device can, if necessary, be adapted to the diameter / cross-sectional area of the object to be cleaned.
  • the nozzle and the design are preferably made of wear-resistant material.
  • the carrier stream including blasting agent and cleaned contaminants can be collected at the exit by an exhaust or other device, soiling and possible residues of abrasive material are filtered out. The abrasive can, as far as it remains after cleaning, recovered and reused.
  • FIG. 1 shows a jet device consisting of a tube 1, a supply line 2 and a wire 3.
  • the wire 3 is thereby moved through the tube 1, through the supply line 2 compressed air and blasting agent is added.
  • FIG. 2 shows a jet device consisting of a tube 1, a feed line 2 and a wire 3, which is moved against the flow direction through the tube.
  • a nozzle 4 is attached to the upstream end of the tube 1, which is convergent-divergent, preferably formed as a Laval nozzle.
  • FIG. 3 shows a jet device consisting of a tube 1, a feed line 2 and a wire 3, which is moved against the flow direction through the tube.
  • a nozzle is provided at the upstream end of the tube 1, which nozzle is designed so that the beam is oriented at an angle of at least 5 degrees to the surface of the wire.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Cleaning In General (AREA)
  • Cleaning By Liquid Or Steam (AREA)
  • Storage Of Fruits Or Vegetables (AREA)
  • Mechanical Treatment Of Semiconductor (AREA)

Abstract

Disclosed is a jet device having a special configuration for cleaning/removing layers from objects whose length is at least five times greater than the diameter or the largest width thereof, particularly for cleaning/removing layers from wires, bands, bars, chains, stamped parts that are attached to each other.

Description

Das Trockeneisstrahlverfahren ist ein im Industriebereich bereits langjährig eingesetztes Verfahren. Aus dem Patent DE 102 43 693 B3, 2004.04.01 , ist ein Verfahren bekannt, dass direkt in einer Strahlpistole aus flüssigem Kohlendioxid Trockenschnee bzw. Trockeneispartikel erzeugt, die anschliessend in einen Trägergasstrom geführt und mit hoher Geschwindigkeit durch eine Düse auf zu reinigende Oberflächen gestrahlt werden.The dry ice blasting process is a process that has been used in the industrial sector for many years. From the patent DE 102 43 693 B3, 2004.04.01 , A method is known that produced directly in a jet gun of liquid carbon dioxide dry snow or dry ice particles, which are then fed into a carrier gas stream and blasted at high speed through a nozzle to be cleaned surfaces.

Für die Reinigung von Drähten, Bändern, Stangen, Ketten, aneinander hängenden kleinen Stanzteilen usw. waren die o.g. Verfahren bisher aus wirtschaftlichen Gründen nicht geeignet. Eine Abstrahlung der ringsum befindlichen Oberflächen dauert schon wegen der Düsenführung viel zu lange, ein grosser Teil des Düsenstrahl geht dabei zusätzlich zumeist ins Leere.For the cleaning of wires, tapes, rods, chains, hanging small stampings, etc. the o.g. Process hitherto unsuitable for economic reasons. A radiation of the surrounding surfaces takes much too long, because of the nozzle guide, a large part of the jet is additionally mostly in the void.

Aus JP 2003-019654 ist ein Verfahren nach dem Oberbegriff des Ansprüchs 1 bekannt.Out JP 2003-019654 a method according to the preamble of Ansprüchs 1 is known.

Aufgabe der Erfindung ist es, längere Teile mit relativ zur Länge kleinem Durchmesser bzw. kleiner Querschnittsfläche effektiv und schnell mittels Strahlmittel zu reinigen.The object of the invention is to clean longer parts with relatively small length to the small diameter or small cross-sectional area effectively and quickly by blasting.

Diese Aufgabe wird erfindungsgemäß dadurch gelöst, dass dem Trägergasstrom als Strahlmittel Trockenschnee oder Trockeneis oder ein Feststoffgranulat zugegeben wird, wobei im Fall von Feststoffgranulat diesem Feststoffgranulat und/oder dem Trägergasstrom zur Kühlwirkung zusätzlich ein Kältemittel wie z.B. kalter Stickstoff beigegeben wird.This object is achieved according to the invention by adding dry snow or dry ice or a solid granulate to the carrier gas stream as blasting agent, wherein in the case of solid granules, this solid granules and / or the carrier gas stream additionally have a refrigerant, such as e.g. cold nitrogen is added.

Bei Versuchen hat sich gezeigt, dass sich das Strahlmittel im Trägerstrom vorzugsweise mittig konzentriert. Das führt dazu, dass ein guter Reinigungseffekt der Oberflächen von längs in dem Trägerstrom - vorzugsweise mittig und vorzugsweise entgegengesetzt dem Trägerstrom - geführten Teilen erreicht wird.Experiments have shown that the blasting agent preferably concentrates in the carrier stream in the middle. This results in a good cleaning effect of the surfaces of longitudinal in the carrier stream - preferably in the middle and preferably opposite to the carrier flow-guided parts.

Vorzugsweise ist am Ausgang der Vorrichtung eine Düse - vorzugsweise eine konvergent-divergente Düse bzw. eine Lavaldüse - angebracht, durch die der zu reinigende Gegenstand in die Vorrichtung eingeführt wird und die gleichzeitig die Endreinigung des zu reinigenden Gegenstandes durchführt. Die Ausführung des zu reinigenden Gegenstandes erfolgt vorzugsweise stromabwärts gegenseitig der Düse. Die Ausführung und bei Erfordernis auch die gesamte Vorrichtung können bei Bedarf dabei dem Durchmesser / der Querschnittsfläche des zu reinigenden Gegenstandes angepasst sein. Düse und Ausführung bestehen bei Bedarf vorzugsweise aus verschleissfestem Material. Falls erforderlich, kann der Trägerstrom samt Strahlmittel und abgereinigten Verschmutzungen am Ausgang durch eine Absaugung oder eine andere Vorrichtung aufgefangen, Verschmutzungen und mögliche Strahlmittelreste dabei ausgefiltert werden. Das Strahlmittel kann, soweit es nach der Reinigung noch Bestand hat, wiedergewonnen und erneut eingesetzt werden.Preferably, at the output of the device, a nozzle - preferably a convergent-divergent nozzle or a Laval nozzle - attached, is introduced by the object to be cleaned in the device and at the same time performs the final cleaning of the object to be cleaned. The execution of the object to be cleaned preferably takes place downstream of each other of the nozzle. The design and, if required, the entire device can, if necessary, be adapted to the diameter / cross-sectional area of the object to be cleaned. If necessary, the nozzle and the design are preferably made of wear-resistant material. If necessary, the carrier stream including blasting agent and cleaned contaminants can be collected at the exit by an exhaust or other device, soiling and possible residues of abrasive material are filtered out. The abrasive can, as far as it remains after cleaning, recovered and reused.

Figur 1 zeigt eine Strahlvorrichtung, bestehend aus einem Rohr 1, einer Zuleitung 2 sowie einem Draht 3. Der Draht 3 wird dabei durch das Rohr 1 bewegt, durch die Zuleitung 2 wird Druckluft und Strahlmittel zugegeben. FIG. 1 shows a jet device consisting of a tube 1, a supply line 2 and a wire 3. The wire 3 is thereby moved through the tube 1, through the supply line 2 compressed air and blasting agent is added.

Figur 2 zeigt eine Strahlvorrichtung, bestehend aus einem Rohr 1, einer Zuleitung 2 sowie einem Draht 3, der entgegen Strömungsrichtung durch das Rohr bewegt wird. Zur Wirkungsverstärkung ist am stromaufwärtigem Ende des Rohres 1 eine Düse 4 angebracht, die konvergent-divergent, dabei vorzugsweise als Lavaldüse ausgebildet ist. FIG. 2 shows a jet device consisting of a tube 1, a feed line 2 and a wire 3, which is moved against the flow direction through the tube. To increase the effect of a nozzle 4 is attached to the upstream end of the tube 1, which is convergent-divergent, preferably formed as a Laval nozzle.

Figur 3 zeigt eine Strahlvorrichtung, bestehend aus einem Rohr 1, einer Zuleitung 2 sowie einem Draht 3, der entgegen Strömungsrichtung durch das Rohr bewegt wird. FIG. 3 shows a jet device consisting of a tube 1, a feed line 2 and a wire 3, which is moved against the flow direction through the tube.

Zur Wirkungsverstärkung ist am stromaufwärtigen Ende des Rohres 1 eine Düse angebracht, die so ausgebildet ist, dass der Strahl in einem Winkel von mindestens 5 Grad auf die Oberfläche des Drahtes ausgerichtet ist.To enhance the effect, a nozzle is provided at the upstream end of the tube 1, which nozzle is designed so that the beam is oriented at an angle of at least 5 degrees to the surface of the wire.

Claims (4)

  1. Jet process for the purpose of cleaning objects (3) having, in relation to their cross-sectional area, a large length of at least five times the diameter and the largest width dimension, respectively, in which process a jet device (1) is used for passing a flow of a carrier gas charged with solid or liquid blasting agents through a supply line (2), preferably with high speed, the object (3) to be cleaned is passed, preferably centrally, through the supply line in parallel with the gas flow which is introduced at one end of the jet device (1) and discharged at the other end of the jet device (1), characterised in that dry ice or dry snow or solid granules are added to the carrier gas flow as a blasting agent, wherein, in case of solid granules, an additional cooling agent such as cold nitrogen is added to the granules and/or the carrier gas flow.
  2. Jet process according to claim 1, characterised in that the object (3) is passed through the jet device (1) in a direction opposite to the gas flow direction.
  3. Jet process according to claim 1 or 2, characterised in that the objects that are passed through and cleaned in the jet device (1) comprise wires, bands, rods, chains, and punched objects that are linked together.
  4. Jet process according to claim 1, 2 or 3, characterised in that a suction device or a collection device, preferably including a filter, is provided at the downstream end of the jet device (1).
EP06818421A 2005-11-16 2006-11-09 Jet process for cleaning and removing layers from long objects Not-in-force EP1951475B1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102005055064A DE102005055064A1 (en) 2005-11-16 2005-11-16 Blasting device for the cleaning and stripping of long objects, such as wires, ribbons, rods, chains, stamped parts hanging together
PCT/EP2006/010710 WO2007057117A2 (en) 2005-11-16 2006-11-09 Jet device for cleaning and removing layers from long objects

Publications (2)

Publication Number Publication Date
EP1951475A2 EP1951475A2 (en) 2008-08-06
EP1951475B1 true EP1951475B1 (en) 2010-04-21

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ID=37989421

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Application Number Title Priority Date Filing Date
EP06818421A Not-in-force EP1951475B1 (en) 2005-11-16 2006-11-09 Jet process for cleaning and removing layers from long objects

Country Status (4)

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EP (1) EP1951475B1 (en)
AT (1) ATE464977T1 (en)
DE (2) DE102005055064A1 (en)
WO (1) WO2007057117A2 (en)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007047629A1 (en) 2007-04-13 2008-10-16 Stein, Ralf Method of applying a high-strength coating to workpieces and / or materials
JP6002308B1 (en) * 2015-11-30 2016-10-05 株式会社望月 Wire surface polishing equipment

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3906672A (en) * 1974-10-17 1975-09-23 Fuji Seiki Machine Works Descaling device
JP3618695B2 (en) * 2001-07-09 2005-02-09 東芝プラントシステム株式会社 Wire surface processing equipment
WO2005016565A1 (en) * 2003-08-18 2005-02-24 Lec Technologies Inc. Cryogenic descaling process

Also Published As

Publication number Publication date
WO2007057117A3 (en) 2007-11-29
ATE464977T1 (en) 2010-05-15
EP1951475A2 (en) 2008-08-06
DE502006006818D1 (en) 2010-06-02
DE102005055064A1 (en) 2007-05-24
WO2007057117A2 (en) 2007-05-24

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