EP1908855B1 - Nozzle beam for the treatment of textile - Google Patents

Nozzle beam for the treatment of textile Download PDF

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Publication number
EP1908855B1
EP1908855B1 EP06021000A EP06021000A EP1908855B1 EP 1908855 B1 EP1908855 B1 EP 1908855B1 EP 06021000 A EP06021000 A EP 06021000A EP 06021000 A EP06021000 A EP 06021000A EP 1908855 B1 EP1908855 B1 EP 1908855B1
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EP
European Patent Office
Prior art keywords
nozzle
steel
strip according
nozzle strip
hrc
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.)
Not-in-force
Application number
EP06021000A
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German (de)
French (fr)
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EP1908855A1 (en
Inventor
Günther Büchle
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.)
Groz Beckert KG
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Groz Beckert KG
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 Groz Beckert KG filed Critical Groz Beckert KG
Priority to EP06021000A priority Critical patent/EP1908855B1/en
Priority to DE502006003337T priority patent/DE502006003337D1/en
Priority to ES06021000T priority patent/ES2322185T3/en
Priority to AT06021000T priority patent/ATE427365T1/en
Publication of EP1908855A1 publication Critical patent/EP1908855A1/en
Application granted granted Critical
Publication of EP1908855B1 publication Critical patent/EP1908855B1/en
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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • B05B1/14—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means with multiple outlet openings; with strainers in or outside the outlet opening
    • B05B1/20—Arrangements of several outlets along elongated bodies, e.g. perforated pipes or troughs, e.g. spray booms; Outlet elements therefor
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B05—SPRAYING OR ATOMISING IN GENERAL; APPLYING FLUENT MATERIALS TO SURFACES, IN GENERAL
    • B05B—SPRAYING APPARATUS; ATOMISING APPARATUS; NOZZLES
    • B05B1/00—Nozzles, spray heads or other outlets, with or without auxiliary devices such as valves, heating means
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C38/00—Ferrous alloys, e.g. steel alloys
    • C22C38/18—Ferrous alloys, e.g. steel alloys containing chromium
    • D—TEXTILES; PAPER
    • D04—BRAIDING; LACE-MAKING; KNITTING; TRIMMINGS; NON-WOVEN FABRICS
    • D04H—MAKING TEXTILE FABRICS, e.g. FROM FIBRES OR FILAMENTARY MATERIAL; FABRICS MADE BY SUCH PROCESSES OR APPARATUS, e.g. FELTS, NON-WOVEN FABRICS; COTTON-WOOL; WADDING ; NON-WOVEN FABRICS FROM STAPLE FIBRES, FILAMENTS OR YARNS, BONDED WITH AT LEAST ONE WEB-LIKE MATERIAL DURING THEIR CONSOLIDATION
    • D04H18/00—Needling machines
    • D04H18/04—Needling machines with water jets

Definitions

  • the invention relates to a nozzle strip for a nozzle line for textile processing, having the features of the preamble of patent claim 1.
  • Such nozzle strips are subject to the corrosive attack of the water. They must be up to date and are therefore usually made of stainless steel. This has a hardness of less than 46 HRC, which results in a limited stability. Over time, the geometry of the nozzle orifices will change, reducing the quality of the emitted water jets. It can then happen that the jet of water atomises into droplets before it hits the fleece. The fleece is then no longer solidified as desired.
  • the steel used is curable and contains martensite that may have been produced by curing.
  • the steel has a strength above 46 HRC, for example between 52 to 60 HRC.
  • the nozzle openings can be introduced before or after hardening in the metal strip. In particular, it is possible to produce the nozzle openings in the desired high accuracy using standard machining methods.
  • the martensitic hardened steel allows the nozzle strip to achieve a longer service life than is possible with stainless steel nozzle strips.
  • the hardened steel is preferably a high alloy steel which, in addition, may contain carbon, as is preferred.
  • the steel grade X20Cr13 is used. This steel can be both hardened and made to resist corrosion by heat treatment. In order for the nozzle openings, in particular at its inflow side retain their shape. This ensures long-term high beam quality.
  • FIG. 1 1 illustrates a nozzle bar 1 for producing a curtain consisting of individual sharp water jets 2 for solidifying a textile nonwoven fabric 3.
  • the nonwoven fabric 3 is held on a base 4 so that it is struck by the water jets 2 when it is mounted under the nozzle bar 1.
  • the water jets 2 penetrate into the web 3 and devour and confuse the individual fibers together.
  • the nozzle bar 1 includes a nozzle strip 5 made of sheet metal, which is provided with a row or rows of nozzle openings 6.
  • all the nozzle openings 6 are arranged on a straight line, which extends over the entire length of the approximately 25 mm wide and up to 7 m long nozzle strip 5. It is also possible for the nozzle openings 6 to extend only to a partial region, the perforated region, of a nozzle strip 5.
  • the diameters of the individual holes are in the range of 80 ⁇ m to 200 ⁇ m. For example, the hole density is 40 holes per inch (16 holes per centimeter). If several rows of nozzle openings are present, the row spacing is, for example, between 0.8 mm and 1.2 mm.
  • the hole diameters are uniform except for small tolerances of, for example, less than 2 ⁇ m along the nozzle strip 5.
  • FIG. 3 illustrates a longitudinal section through the nozzle strip 5.
  • the nozzle openings 6 are in the embodiment after FIG. 3 equal to each other.
  • nozzle orifices 6 of different shape and size can be used. They have a cylindrical section 7 on their inflow side and a funnel-shaped, for example conical section 8 on their outflow side. The transitions between the sections 7, 8 can be smoothed and thus edge-free.
  • the nozzle strip 5 consists of a martensitic hardened steel, for example X20Cr13.
  • This steel is martensitic curable and largely corrosion resistant. The corrosion resistance is only insignificantly influenced by the heat treatment. It remains.
  • the martensite structure is in the micrograph under suitable magnification, e.g. 1: 200, recognizable.
  • the steel preferably contains little or no austenitic species, e.g. Nickel. In the edge area or near-surface area, the martensite structure is enriched with nitrogen.
  • the nozzle bar 1 During operation of the nozzle bar 1 are at the inlet side of the nozzle strip 5, followed by the cylindrical portions 7 of the nozzle openings 6, water at a pressure between 30 bar and 200 bar or in a few cases, more than 200 bar.
  • water In the cylindrical sections 7 of the nozzle openings 6 thereby water jets that emerge freely from the funnel-shaped sections 8 and shoot a distance of a few millimeters to a few centimeters through the air, without falling into individual droplets.
  • the fleece 3 Before spraying the water jets they hit the fleece 3 and cause the solidification there.
  • the quality of the generated water jet and its effect on the rearrangement and turbulence of the fibers is essentially dependent on the accuracy of the geometry of the nozzle openings 6.
  • the geometry of the nozzle openings 6 is not significantly deteriorated even after prolonged operation of the nozzle beam 1, so that the beam quality is maintained over a long time.
  • the cylindrical remains Geometry of the cylindrical sections long largely preserved.
  • the water may rest under pressure on the nozzle strip 5 on the side of the nozzle strip 5, which has the funnel-shaped sections 8. These then form inlet openings for the water which is bundled in the further course through the cylindrical sections 7. Otherwise, a nozzle strip inserted in this way has the same effect as described above,
  • a nozzle beam for hydroentanglement of a nonwoven 3 has at its side facing the nonwoven 3 an opening into which a nozzle strip 5 is inserted. This has at least one row of nozzle openings 6, are generated by the parallel to each other, directed onto the nonwoven 3 water jets 2, which serve for web bonding.
  • the nozzle strip 5 is formed of a martensitic hardened steel, the surface having a high corrosion resistance.

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Textile Engineering (AREA)
  • Nonwoven Fabrics (AREA)
  • Treatment Of Fiber Materials (AREA)

Abstract

A web of non-woven felt fibres is strengthened by exposure to an array of high-pressure water jets. The water jets are apertures in a strip located within a surrounding frame. The jet strip is a section of martensite hardened sheet metal of strength greater than 46 HRC and incorporating nitrogen at the outer margins. The high-alloy X20Cr13 steel is thermally hardened to above 53 HRC. In a further embodiment the steel is a combination of austenitic and martensite steel. Each jet consists first of a cylindrical section, followed by a diverging outlet.

Description

Die Erfindung betrifft einen Düsenstreifen für eine Düsenzeile zur Textilbearbeitung, mit den Merkmalen des Oberbegriffs des Patentanspruchs 1.The invention relates to a nozzle strip for a nozzle line for textile processing, having the features of the preamble of patent claim 1.

Aus der Praxis und der DE-A-199 41 729 ist die Verfestigung von Vliesstoffen durch Wasserstrahlen bekannt. Dazu wird ein Wirrfasergelege, ein so genanntes Vlies, unter einer Düsenbalken mit einem Düsenstreifen bewegt, der eine Vielzahl von Düsen aufweist. Die Düsen haben dabei einen Durchmesser von beispielsweise 0,1 mm und sind in einer Reihe im Abstand von z.B. jeweils 1 mm angeordnet, wobei sich die Reihe über eine Länge von z.B. bis zu 7 m erstreckt. Durch diese Löcher werden feine Wasserstrahlen mit einem Druck von bis zu 200 bar in das Vlies gestrahlt, um die einzelnen Filamente miteinander zu verschlingen und einen Filz zu bilden.From the practice and the DE-A-199 41 729 is the solidification of nonwovens by water jets known. This is a Wirrfasergelege, a so-called fleece, under a nozzle bar moved with a nozzle strip having a plurality of nozzles. The nozzles have a diameter of, for example, 0.1 mm and are arranged in a row at a distance of, for example, in each case 1 mm, wherein the row extends over a length of, for example, up to 7 m. Through these holes fine water jets with a pressure of up to 200 bar are blasted into the web to engulf the individual filaments together and form a felt.

Diese ausgesprochen große Anzahl von Löchern muss mit höchster Präzision gefertigt werden. Die Toleranzen für die Anordnung der Löcher und deren Durchmesser sollen häufig unter 2 µm liegen.This extremely large number of holes must be manufactured with the highest precision. The tolerances for the arrangement of the holes and their diameter should often be less than 2 microns.

Solche Düsenstreifen unterliegen dem korrosiven Angriff des Wassers. Sie müssen dem Stand halten und werden deshalb in der Regel aus Edelstahl gefertigt. Dieser hat eine Härte von weniger als 46 HRC, was eine beschränkte Standfestigkeit ergibt. Mit der Zeit verändern sich die Geometrien der Düsenöffnungen, wodurch die Qualität der ausgesandten Wasserstrahlen sinkt. Es kann dann geschehen, dass der Wasserstrahl zu Tröpfchen zerstäubt, bevor er auf das Vlies trifft. Das Vlies wird dann nicht mehr wie gewünscht verfestigt.Such nozzle strips are subject to the corrosive attack of the water. They must be up to date and are therefore usually made of stainless steel. This has a hardness of less than 46 HRC, which results in a limited stability. Over time, the geometry of the nozzle orifices will change, reducing the quality of the emitted water jets. It can then happen that the jet of water atomises into droplets before it hits the fleece. The fleece is then no longer solidified as desired.

Aus der EP-A-1 236 809 ist ein rostfreier Stahl mit hoher Härte bekannt. Es handelt sich um einen martensitischen Edelstahl mit hohem Chromgehalt, wobei ein Teil des Chroms als Chromnitrid vorliegt.From the EP-A-1 236 809 is known a stainless steel with high hardness. It is a martensitic stainless steel with a high chromium content, with part of the chromium being present as chromium nitride.

Davon ausgehend ist es Aufgabe der Erfindung, einen verbesserten Düsenstreifen zu schaffen.On this basis, it is an object of the invention to provide an improved nozzle strip.

Diese Aufgabe wird mit einem Düsenstreifen gelöst, der aus einem martensitischen gehärteten Stahl besteht.This object is achieved with a jet strip consisting of a martensitic hardened steel.

Der verwendete Stahl ist härtbar und enthält Martensit, das durch das Härten erzeugt worden sein kann. Der Stahl weist eine Festigkeit über 46 HRC, beispielsweise zwischsen 52 bis 60 HRC auf. Die Düsenöffnungen können vor oder auch nach dem Härten in den Blechstreifen eingebracht werden. Es ist insbesondere möglich, mit gängigen Bearbeitungsverfahren die Düsenöffnungen in der gewünschten hohen Genauigkeit zu erzeugen. Der martensitische gehärtete Stahl gestattet es mit dem Düsenstreifen eine höhere Standzeit zu erzielen als es mit Düsenstreifen aus Edelstahl möglich ist.The steel used is curable and contains martensite that may have been produced by curing. The steel has a strength above 46 HRC, for example between 52 to 60 HRC. The nozzle openings can be introduced before or after hardening in the metal strip. In particular, it is possible to produce the nozzle openings in the desired high accuracy using standard machining methods. The martensitic hardened steel allows the nozzle strip to achieve a longer service life than is possible with stainless steel nozzle strips.

Der gehärtete Stahl ist vorzugsweise ein hochlegierter Stahl, der außerdem, wie es bevorzugt wird, Kohlenstoff enthalten kann. Vorzugsweise wird die Stahlsorte X20Cr13 angewendet. Dieser Stahl kann durch Wärmebehandlung sowohl gehärtet als auch korrosionsträge gemacht werden. Damit behalten die Düsenöffnungen, insbesondere an ihrer Einströmseite ihre Form. Dies stellt langfristig eine hohe Strahlqualität sicher.The hardened steel is preferably a high alloy steel which, in addition, may contain carbon, as is preferred. Preferably, the steel grade X20Cr13 is used. This steel can be both hardened and made to resist corrosion by heat treatment. In order for the nozzle openings, in particular at its inflow side retain their shape. This ensures long-term high beam quality.

Weitere Einzelheiten vorteilhafter Ausführungsformen sind Gegenstand der Zeichnung, der Beschreibung oder von Ansprüchen. In der Zeichung ist ein Ausführungsbeispiel der Erfindung veranschaulicht. Es zeigen:

Figur 1
einen Düsenbalken zur Verfestigung eines Vlieses in schematisierter Vorderansicht
Figur 2
einen in den Düsenbalken eingebauten Düsenstreifen, in Draufsicht, und
Figur 3
den Düsenstreifen nach Figur 2 in längs geschnittener ausschnittsweiser Darstellung.
Further details of advantageous embodiments are the subject of the drawing, the description or claims. In the drawing, an embodiment of the invention is illustrated. Show it:
FIG. 1
a nozzle beam for solidification of a nonwoven in a schematic front view
FIG. 2
a nozzle strip installed in the nozzle bar, in plan view, and
FIG. 3
after the nozzle strip FIG. 2 in longitudinal section cutout illustration.

Figur 1 veranschaulicht einen Düsenbalken 1 zur Erzeugung eines aus einzelnen scharfen Wasserstrahlen 2 bestehenden Vorhangs zur Verfestigung eines textilen Vlieses 3. Das Vlies 3 ist auf einer Unterlage 4 so gehalten, dass es von den Wasserstrahlen 2 getroffen wird, wenn es unter dem Düsenbalken 1 gelagert ist. Die Wasserstrahlen 2 dringen dabei in das Vlies 3 und verschlingen und verwirren die einzelnen Fasern miteinander. FIG. 1 1 illustrates a nozzle bar 1 for producing a curtain consisting of individual sharp water jets 2 for solidifying a textile nonwoven fabric 3. The nonwoven fabric 3 is held on a base 4 so that it is struck by the water jets 2 when it is mounted under the nozzle bar 1. The water jets 2 penetrate into the web 3 and devour and confuse the individual fibers together.

Der Düsenbalken 1 enthält einen aus Blech bestehenden Düsenstreifen 5, der mit einer Reihe oder mehreren Reihen Düsenöffnungen 6 versehen ist. Beispielsweise sind alle Düsenöffnungen 6 auf einer geraden Linie angeordnet, die sich auf dem etwa 25 mm breiten und bis zu 7 m langen Düsenstreifen 5 über dessen gesamte Länge erstreckt. Es ist auch möglich, dass sich die Düsenöffnungen 6 nur auf einen Teilbereich, den perforierten Bereich, eines Düsenstreifens 5 erstrecken. Die Durchmesser der einzelnen Löcher liegen im Bereich von 80 µm bis 200 µm. Die Lochdichte beträgt beispielsweise 40 Löcher pro Zoll (16 Löcher pro Zentimeter). Sind mehrere Reihen von Düsenöffnungen vorhanden, liegt der Reihenabstand z.B. zwischen 0,8 mm und 1,2 mm. Die Lochdurchmesser sind bis auf geringe Toleranzen von beispielsweise weniger als 2 µm entlang des Düsenstreifens 5 einheitlich.The nozzle bar 1 includes a nozzle strip 5 made of sheet metal, which is provided with a row or rows of nozzle openings 6. For example, all the nozzle openings 6 are arranged on a straight line, which extends over the entire length of the approximately 25 mm wide and up to 7 m long nozzle strip 5. It is also possible for the nozzle openings 6 to extend only to a partial region, the perforated region, of a nozzle strip 5. The diameters of the individual holes are in the range of 80 μm to 200 μm. For example, the hole density is 40 holes per inch (16 holes per centimeter). If several rows of nozzle openings are present, the row spacing is, for example, between 0.8 mm and 1.2 mm. The hole diameters are uniform except for small tolerances of, for example, less than 2 μm along the nozzle strip 5.

Figur 3 veranschaulicht einen Längsschnitt durch den Düsenstreifen 5. Die Düsenöffnungen 6 sind im Ausführungsbeispiel nach Figur 3 untereinander gleich. Abhängig von den Produktanforderungen des zu erzeugenden Vlieses können, Düsenöffnungen 6 unterschiedlicher Form und Größe Anwendung finden, Sie weisen an ihrer Einströmseite jeweils einen zylindrischen Abschnitt 7 und an ihrer Ausströmseite einen trichterförmigen, beispielsweise konischen Abschnitt 8 auf. Die Übergänge zwischen den Abschnitten 7, 8 können geglättet und somit kantenfrei sein. FIG. 3 illustrates a longitudinal section through the nozzle strip 5. The nozzle openings 6 are in the embodiment after FIG. 3 equal to each other. Depending on the product requirements of the nonwoven to be produced, nozzle orifices 6 of different shape and size can be used. They have a cylindrical section 7 on their inflow side and a funnel-shaped, for example conical section 8 on their outflow side. The transitions between the sections 7, 8 can be smoothed and thus edge-free.

Der Düsenstreifen 5 besteht aus einem martensitischen gehärteten Stahl, beispielsweise X20Cr13. Dieser Stahl ist martensitisch härtbar und weitestgehend korrosionsbeständig. Die Korrosionsbeständigkeit wird durch die Wärmebehandlung nur unwesentlich beeinflusst. Sie bleibt erhalten. Die Martensitstruktur ist im Schliffbild unter geeigneter Vergrößerung, z.B. 1:200, erkennbar. Der Stahl enthält vorzugsweise wenig oder keine Austenitbildner, wie z.B. Nickel. Im Randbereich bzw. oberflächennahen Bereich ist die Martensitstruktur mit Stickstoff angereichert.The nozzle strip 5 consists of a martensitic hardened steel, for example X20Cr13. This steel is martensitic curable and largely corrosion resistant. The corrosion resistance is only insignificantly influenced by the heat treatment. It remains. The martensite structure is in the micrograph under suitable magnification, e.g. 1: 200, recognizable. The steel preferably contains little or no austenitic species, e.g. Nickel. In the edge area or near-surface area, the martensite structure is enriched with nitrogen.

Bei Betrieb des Düsenbalkens 1 stehen an der Einlaufseite des Düsenstreifens 5, an die sich die zylindrischen Abschnitte 7 der Düsenöffnungen 6 anschließen, Wasser mit einem Druck zwischen 30 bar und 200 bar oder in einigen wenigen Fällen auch mehr als 200 bar an. In den zylindrischen Abschnitten 7 der Düsenöffnungen 6 entstehen dadurch Wasserstrahlen, die aus den trichterförmigen Abschnitten 8 frei austreten und eine Strecke von wenigen Millimetern bis zu einigen Zentimetern durch die Luft schießen, ohne in Einzeltröpfchen zu zerfallen. Bevor die Wasserstrahlen zerstäuben treffen sie auf das Vlies 3 und bewirken dort die Verfestigung. Die Qualität des erzeugten Wasserstrahls und seine Wirkung hinsichtlich der Umordnung und Verwirbelung der Fasern ist wesentlich von der Genauigkeit der Geometrie der Düsenöffnungen 6 abhängig. Durch die Verwendung eines korrosionsfesten martensitischen Stahls wird auch nach längerem Betriebs des Düsenbalkens 1 die Geometrie der Düsenöffnungen 6 nicht wesentlich verschlechtert, so dass die Strahlqualität über lange Zeit erhalten bleibt. Insbesondere bleibt die zylindrische Geometrie der zylindrischen Abschnitte lange weitgehend erhalten.During operation of the nozzle bar 1 are at the inlet side of the nozzle strip 5, followed by the cylindrical portions 7 of the nozzle openings 6, water at a pressure between 30 bar and 200 bar or in a few cases, more than 200 bar. In the cylindrical sections 7 of the nozzle openings 6 thereby water jets that emerge freely from the funnel-shaped sections 8 and shoot a distance of a few millimeters to a few centimeters through the air, without falling into individual droplets. Before spraying the water jets they hit the fleece 3 and cause the solidification there. The quality of the generated water jet and its effect on the rearrangement and turbulence of the fibers is essentially dependent on the accuracy of the geometry of the nozzle openings 6. The use of a corrosion-resistant martensitic steel, the geometry of the nozzle openings 6 is not significantly deteriorated even after prolonged operation of the nozzle beam 1, so that the beam quality is maintained over a long time. In particular, the cylindrical remains Geometry of the cylindrical sections long largely preserved.

Bei speziellen Anwendungsfällen, kann das Wasser unter Druck auf den Düsenstreifen 5 an der Seite des Düsenstreifens 5 anliegen, der die trichterförmigen Abschnitte 8 aufweist. Diese bilden dann Einlauföffnungen für das Wasser welches im weiteren Verlauf durch die zylindrischen Abschnitte 7 gebündelt wird. Ansonsten hat ein so eingesetzter Düsenstreifen die gleiche wirkungsweise wie oben beschrieben,In special applications, the water may rest under pressure on the nozzle strip 5 on the side of the nozzle strip 5, which has the funnel-shaped sections 8. These then form inlet openings for the water which is bundled in the further course through the cylindrical sections 7. Otherwise, a nozzle strip inserted in this way has the same effect as described above,

Ein Düsenbalken zur Wasserstrahlverfestigung eines Vlieses 3 weist an seinem dem Vlies 3 zugewandten Seite eine Öffnung auf, in die ein Düsenstreifen 5 eingesetzt ist. Dieser weist zumindest eine Reihe von Düsenöffnungen 6 auf, durch die zueinander parallele, auf das Vlies 3 gerichtete Wasserstrahlen 2 erzeugt werden, die zur Vliesverfestigung dienen. Der Düsenstreifen 5 ist aus einem martensitischen gehärteten Stahl ausgebildet, wobei die Oberfläche eine hohe Korrosionsbeständigkeit aufweist.A nozzle beam for hydroentanglement of a nonwoven 3 has at its side facing the nonwoven 3 an opening into which a nozzle strip 5 is inserted. This has at least one row of nozzle openings 6, are generated by the parallel to each other, directed onto the nonwoven 3 water jets 2, which serve for web bonding. The nozzle strip 5 is formed of a martensitic hardened steel, the surface having a high corrosion resistance.

Bezugszeichenliste:LIST OF REFERENCE NUMBERS

11
Düsenbalkennozzle beam
22
Wasserstrahlenwater jets
33
Vliesfleece
44
Unterlagedocument
55
Düsenstreifenjetstrips
66
Düsenöffnungenorifices
7, 87, 8
Abschnittesections

Claims (9)

  1. Nozzle strip (5) for a jet beam for textile processing, in particular for felt production by means of water entanglement,
    with a sheet metal strip section, which has a plurality of nozzle openings (6), characterised in that
    the sheet metal strip section is made of a maraging steel with a strength higher than 46 HRC and nitrogen components in the edge region.
  2. Nozzle strip according to claim 1, characterised in that the steel is thermally hardened.
  3. Nozzle strip according to claim 1, characterised in that the hardened steel has a hardness of more than 53 HRC.
  4. Nozzle strip according to claim 1, characterised in that the hardened steel has a hardness of more than 50 HRC.
  5. Nozzle strip according to claim 1, characterised in that the steel is a high-alloy steel.
  6. Nozzle strip according to claim 1, characterised in that the steel contains carbon.
  7. Nozzle strip according to claim 1, characterised in that the steel is X20Cr13.
  8. Nozzle strip according to claim 1, characterised in that the steel has a partially austenitic and additionally a martensitic structure.
  9. Nozzle strip according to claim 1, characterised in that the nozzle openings (6) have a cylindrical section (7) on the inflow side and adjoining this have a section (8) widening in a funnel-shape.
EP06021000A 2006-10-06 2006-10-06 Nozzle beam for the treatment of textile Not-in-force EP1908855B1 (en)

Priority Applications (4)

Application Number Priority Date Filing Date Title
EP06021000A EP1908855B1 (en) 2006-10-06 2006-10-06 Nozzle beam for the treatment of textile
DE502006003337T DE502006003337D1 (en) 2006-10-06 2006-10-06 Nozzle strips for textile processing
ES06021000T ES2322185T3 (en) 2006-10-06 2006-10-06 TOWNS STRIP FOR TEXTILE TREATMENT.
AT06021000T ATE427365T1 (en) 2006-10-06 2006-10-06 NOZZLE STRIPS FOR TEXTILE PROCESSING

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
EP06021000A EP1908855B1 (en) 2006-10-06 2006-10-06 Nozzle beam for the treatment of textile

Publications (2)

Publication Number Publication Date
EP1908855A1 EP1908855A1 (en) 2008-04-09
EP1908855B1 true EP1908855B1 (en) 2009-04-01

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Family Applications (1)

Application Number Title Priority Date Filing Date
EP06021000A Not-in-force EP1908855B1 (en) 2006-10-06 2006-10-06 Nozzle beam for the treatment of textile

Country Status (4)

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EP (1) EP1908855B1 (en)
AT (1) ATE427365T1 (en)
DE (1) DE502006003337D1 (en)
ES (1) ES2322185T3 (en)

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* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013110787A1 (en) * 2013-09-30 2015-04-02 Sig Technology Ag Device for changing the jet shape of flowable products
DE102013110774A1 (en) * 2013-09-30 2015-04-02 Sig Technology Ag Device for changing the jet shape of flowable products
DE102014104480A1 (en) * 2014-03-31 2015-10-01 Sig Technology Ag Device for changing the jet shape of flowable products

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4212966C2 (en) * 1992-04-18 1995-07-13 Ver Schmiedewerke Gmbh Use of a martensitic chromium steel
DE19923591A1 (en) * 1999-05-21 2000-11-23 Fleissner Maschf Gmbh Co Device with a nozzle bar for generating liquid jets for applying a jet to the fibers of a web
DE19941729A1 (en) * 1999-09-01 2001-03-08 Fleissner Maschf Gmbh Co Nozzle body for generating the finest liquid jets z. B. on water needling devices
JP3977258B2 (en) * 2001-02-14 2007-09-19 フライスナー ゲゼルシャフト ミット ベシュレンクテル ハフツング ウント コンパニー マシーネンファブリーク Closure unit for nozzle strips on the nozzle beam that hydrodynamically entangles the fibers of the product web
JP4337268B2 (en) * 2001-02-27 2009-09-30 大同特殊鋼株式会社 High hardness martensitic stainless steel with excellent corrosion resistance
FR2836074B1 (en) * 2002-02-19 2004-12-24 Rieter Perfojet WATER JET PROJECTION DEVICE WITH REMOVABLE JOINT HOLDER

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ATE427365T1 (en) 2009-04-15
DE502006003337D1 (en) 2009-05-14
EP1908855A1 (en) 2008-04-09

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