EP0406686A2 - Wearing discs for crimping machines - Google Patents

Wearing discs for crimping machines Download PDF

Info

Publication number
EP0406686A2
EP0406686A2 EP90112233A EP90112233A EP0406686A2 EP 0406686 A2 EP0406686 A2 EP 0406686A2 EP 90112233 A EP90112233 A EP 90112233A EP 90112233 A EP90112233 A EP 90112233A EP 0406686 A2 EP0406686 A2 EP 0406686A2
Authority
EP
European Patent Office
Prior art keywords
wear
sintered material
crimping
metal
materials
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.)
Granted
Application number
EP90112233A
Other languages
German (de)
French (fr)
Other versions
EP0406686B1 (en
EP0406686A3 (en
Inventor
Günter Marx
Josef Dr. Bach
Jürgen Dr. Lorenz
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.)
Spinnstoffabrik Zehlendorf AG
Original Assignee
Spinnstoffabrik Zehlendorf AG
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 Spinnstoffabrik Zehlendorf AG filed Critical Spinnstoffabrik Zehlendorf AG
Priority to AT90112233T priority Critical patent/ATE89343T1/en
Publication of EP0406686A2 publication Critical patent/EP0406686A2/en
Publication of EP0406686A3 publication Critical patent/EP0406686A3/en
Application granted granted Critical
Publication of EP0406686B1 publication Critical patent/EP0406686B1/en
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

Links

Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02G—CRIMPING OR CURLING FIBRES, FILAMENTS, THREADS, OR YARNS; YARNS OR THREADS
    • D02G1/00—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics
    • D02G1/12—Producing crimped or curled fibres, filaments, yarns, or threads, giving them latent characteristics using stuffer boxes

Definitions

  • the present invention relates to wear washers for crimping machines for the production of synthetic fibers.
  • Such wear washers which are intended to prevent the lateral emergence of the fiber cable to be compressed from the press roll nip of the crimping chamber, are known; your requirement profile will e.g. discussed in great detail in DE-OS 21 13 886.
  • the wear washers must therefore have good thermal conductivity, since when the 10 fiber strands pass through the crimp, and in particular during the dry crimp, friction is generated and this is converted into heat. To perform their function, the wear washers must be in frictional contact with the end faces of the feed rollers and the fiber plugs compressed in the crimping chamber are pushed along them under high pressure. During this process, a lot of heat also develops on the friction surface of the disks, ie in a relatively small area of their surface. The material of the wear washers must therefore be a good conductor of heat so that the heat generated is dissipated quickly and the temperature of the friction surface cannot rise too high and the fibers are not damaged.
  • Abrasion-resistant, hard materials that have been proposed for the production of wear disks are, for example, brass or ceramic (US Pat. No. 4,395,804) or aluminum oxide mixed ceramics, such as (R) ALSIMAG (US Pat. No. 2,311,174).
  • the conventional materials that have this property such as sintered ceramics made of aluminum oxide or zirconium oxide / Silicon dioxide, however, are not sufficiently thermally conductive.
  • Another disadvantage of these very hard materials is the fact that occasional damage to the friction surfaces of rotating disks no longer heals during operation (grinding) and that the end faces of the feed rollers can be damaged.
  • the widely used brass wear washers have good thermal conductivity, but are still too short and do not have sufficient healing properties.
  • Plastic panes have poor thermal conductivity.
  • wear disks which are characterized by optimum abrasion resistance and good thermal conductivity and which moreover have the advantage over conventional materials that they do not cause discoloration of the fiber strands.
  • Wear discs must be manufactured with high precision and advantageously either consist of a relatively abrasion-resistant material or be provided with a special surface treatment so that the cable band or the thread survives the crimping process with the least possible fiber damage.
  • wear-prone parts are not subjected to excessive stress, surface treatment methods such as e.g. Flame, induction and case hardening, for wear protection.
  • surface treatment methods such as e.g. Flame, induction and case hardening, for wear protection.
  • the wear disks according to the invention largely overcome the problems described above.
  • the wear disks according to the invention are characterized in that they consist of a sintered material made of carbon and metals or their alloys, which, with optimal self-healing ability, counteracts the frictional stresses as much as possible against wear.
  • Friction materials of this type convert kinetic energy into thermal energy. Friction materials of this type are now also required on a large scale in automobile construction and general mechanical engineering. These are multi-component sintered materials, some of which are extremely complex. Sintered materials as used in the present invention are also known. They contain optionally for example 5 to 70% graphite, 85 to 30% copper and possibly up to 10%, preferably 8 to 10% tin, up to 15% lead and up to 12% zinc. In the device according to the invention, a high copper content in the range between 70 and 90% is advantageous, preferably over 80%.
  • the metal component particularly preferably consists only of copper. Due to the high copper content, it is possible to increase the thermal conductivity to a large extent, whereby it should exceed 80 W x K ⁇ 1 xm ⁇ 1. It is preferably 80 to 200, in particular 100-150 W x K ⁇ 1 xm ⁇ 1.
  • the thermal conductivity of some particularly well-suited materials, the "metal carbons" mentioned below, is 125 ⁇ 15.
  • the copper can also be replaced by other metals in order to modify the properties of the sintered wear washers depending on the desired stress. So it can be advantageous to e.g. to be replaced by iron, tin, zinc or lead or only to be combined with these elements; but also the high-melting metals of the 4th to 6th subgroup, as sintered materials with carbon, show advantageous luctile, wear-resistant properties.
  • the structure also influences the properties of the required sintered materials, e.g. can be expressed by the apparent density.
  • the apparent density is the quotient of the mass and the macroscopic volume of the material.
  • metal carbons which are among the oldest sintered composites, have proven to be a particularly suitable material for the wear disks according to the invention count and so far have mainly been used as collector brushes for electric motors.
  • Metal carbons which are particularly suitable as a material for the wear disks according to the invention, consist of 80-85% copper, 10-16% lead and 5-9% graphite. Very suitable commercial materials of this type are e.g. the standard metal charcoal qualities BDB or NL from W.L. Eichberg, Berlin.
  • the wear washer according to the invention is distinguished by the fact that it has an optimal combination of wear resistance and self-healing ability, is good heat conductor and, surprisingly, does not cause discoloration on the yarns, as is customary with the common materials.
  • the combination of these positive properties leads to a long, trouble-free runtime of the crimping machines equipped with them.
  • the cable quality is particularly evident in a uniform crimp pattern over the entire cable cross-section, while in the usual methods an irregular sinusoidal or angular toothed crimp shape often occurs in practice.
  • the uniform crimped arch shape guarantees good textile processing, especially on cutting and tearing converters.

Landscapes

  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)
  • Powder Metallurgy (AREA)
  • Cookers (AREA)
  • Lining Or Joining Of Plastics Or The Like (AREA)
  • Manufacturing Of Electrical Connectors (AREA)
  • Extrusion Moulding Of Plastics Or The Like (AREA)
  • Magnetically Actuated Valves (AREA)
  • Turning (AREA)
  • Professional, Industrial, Or Sporting Protective Garments (AREA)

Abstract

There are described wearing discs for crimping machines, consisting of a sintered material formed from a metal and carbon and having an apparent density of from 4 to 7 g/cm<3>. <??>The metals employed for the sintered material are good thermal conductors, in particular copper or alloys.

Description

Die vorliegende Erfindung betrifft Verschleiß-Scheiben für Kräuselmaschinen zur Herstellung von synthetischen Fasern.The present invention relates to wear washers for crimping machines for the production of synthetic fibers.

Derartige Verschleiß-Scheiben, die den seitlichen Austritt des zu stauchenden Faserkabels aus dem Preßwalzenspalt der Kräuselkammer verhindern sollen, sind bekannt; ihr Anforderungsprofil wird z.B. in der DE-OS 21 13 886 sehr ausführlich diskutiert.Such wear washers, which are intended to prevent the lateral emergence of the fiber cable to be compressed from the press roll nip of the crimping chamber, are known; your requirement profile will e.g. discussed in great detail in DE-OS 21 13 886.

Die Verschleiß-Scheiben müssen demnach eine gute Wärmeleitfähigkeit besitzen, da beim Durchlaufen der 10 Faserstränge bei der Kräuselung und insbesondere bei der Trockenkräuselung Reibung erzeugt und diese in Wärme umgewandelt wird. Die Verschleiß-Scheiben müssen zur Erfüllung ihrer Funktion in reibendem Kontakt mit den Stirnflächen der Einzugswalzen stehen und die in der Kräuselkammer gestauchten Faserpfropfen werden unter hohem Druck an ihnen entlang geschoben. Bei diesem Vorgang entwickelt sich auf der Reibfläche der Scheiben, d.h. in einem relativ kleinen Bereich ihrer Oberfläche, zusätzlich viel Wärme. Das Material der Verschleiß-Scheiben muß daher gut wärmeleitend sein, damit die erzeugte Wärme schnell abgeführt wird, und die Temperatur der Reibfläche nicht zu hoch steigen kann und die Fasern nicht beschädigt werden. Die hohe Reibungsarbeit führt ferner zu einem schnellen Verschleiß der Scheiben, deshalb es von Vorteil ist, ein möglichst abriebbeständiges Material bei der Fertigung der beanspruchten Teile zu verwenden. Abriebfeste, harte Materialien, die zur Herstellung von Verschleiß-Scheiben vorgeschlagen wurden, sind beispielsweise Messing oder Keramik (US-A-4 395 804) oder Aluminiumoxid-Mischkeramik, wie z.B. (R) ALSIMAG (US-A-2 311 174). Die herkömmlichen Materialien die diese Eigenschaft aufweisen, wie z.B. Sinterkeramiken aus Aluminiumoxid oder Zirkoniumoxid/­ Siliciumdioxid, sind jedoch nicht genügend wärmeleitend. Ein weiterer Nachteil dieser sehr harten Materialien zeigt sich darin, daß evtl. vereinzelt auftretende Schäden an den Reiboberflächen rotierender Scheiben im Betrieb nicht mehr ausheilen (abgeschliffen werden) und daß die Stirnflächen der Einzugswalzen Schaden nehmen können.The wear washers must therefore have good thermal conductivity, since when the 10 fiber strands pass through the crimp, and in particular during the dry crimp, friction is generated and this is converted into heat. To perform their function, the wear washers must be in frictional contact with the end faces of the feed rollers and the fiber plugs compressed in the crimping chamber are pushed along them under high pressure. During this process, a lot of heat also develops on the friction surface of the disks, ie in a relatively small area of their surface. The material of the wear washers must therefore be a good conductor of heat so that the heat generated is dissipated quickly and the temperature of the friction surface cannot rise too high and the fibers are not damaged. The high friction work also leads to rapid wear of the disks, which is why it is advantageous to use the most abrasion-resistant material possible in the manufacture of the stressed parts. Abrasion-resistant, hard materials that have been proposed for the production of wear disks are, for example, brass or ceramic (US Pat. No. 4,395,804) or aluminum oxide mixed ceramics, such as (R) ALSIMAG (US Pat. No. 2,311,174). The conventional materials that have this property, such as sintered ceramics made of aluminum oxide or zirconium oxide / Silicon dioxide, however, are not sufficiently thermally conductive. Another disadvantage of these very hard materials is the fact that occasional damage to the friction surfaces of rotating disks no longer heals during operation (grinding) and that the end faces of the feed rollers can be damaged.

Als weichere Materialien für Verschleiß-Scheiben wurden z.B. empfohlene Bronze, Aluminium oder (R) NYLON oder PTFE (DE-A-3 503 447, DE-A-2 604 505, US-A-3 237 270 und DE-A-1 435 441) oder auch Graphit (DE-A-2 113 886). Ein Problem der zur Zeit gängigen Verschleiss-Scheiben aus Graphit, ist nicht nur ihr hoher Abrieb, sondern auch eine Anfärbung der Filamente, die in hohem Maße unerwünscht ist.As softer materials for wear washers e.g. Recommended bronze, aluminum or (R) NYLON or PTFE (DE-A-3 503 447, DE-A-2 604 505, US-A-3 237 270 and DE-A-1 435 441) or graphite (DE- A-2 113 886). A problem with the currently used wear disks made of graphite is not only their high abrasion, but also a coloring of the filaments, which is highly undesirable.

Die verbreitet eingesetzten Messing-Verschleißscheiben weisen zwar eine gute Wärmeleitfähigkeit auf, haben aber immer noch eine zu geringe Standzeit und kein ausreichendes Ausheilvermögen. Kunststoffscheiben haben eine mangelhafte Wärmeleitfähigkeit.The widely used brass wear washers have good thermal conductivity, but are still too short and do not have sufficient healing properties. Plastic panes have poor thermal conductivity.

Es gilt daher Verschleiß-Scheiben herzustellen, die sich durch eine optimale Abriebsbeständigkeit und eine gute Wärmeleitfähigkeit auszeichnen und überdies den Vorteil gegenüber herkömmlichen Materialien besitzen, daß sie keine Verfärbungen der Faserstränge bewirken.It is therefore necessary to manufacture wear disks which are characterized by optimum abrasion resistance and good thermal conductivity and which moreover have the advantage over conventional materials that they do not cause discoloration of the fiber strands.

Verschleiss-Scheiben müssen mit hoher Präzision hergestellt werden und vorteilhafterweise entweder aus einem relativ abriebsresistenten Material bestehen oder mit einer speziellen Oberflächenbehandlung versehen sein, damit das Kabelband oder der Faden den Kräuselprozeß mit der geringstmöglichen Faserbeschädigung übersteht.Wear discs must be manufactured with high precision and advantageously either consist of a relatively abrasion-resistant material or be provided with a special surface treatment so that the cable band or the thread survives the crimping process with the least possible fiber damage.

Wenn die Beanspruchung der verschleißgefährdeten Teile nicht übermäßig hoch ist, reichen oft schon Verfahren zur Oberflächenbehandlung, wie z.B. Flamm-, Induktions- und Einsatzhärten, für den Verschleiß-Schutz aus.If the wear-prone parts are not subjected to excessive stress, surface treatment methods such as e.g. Flame, induction and case hardening, for wear protection.

Allerdings ist eine hohe Oberflächenhärte nicht allein maßgebend für die Abriebsfestigkeit und überdies sind Schichten, die durch dieses Verfahren gebildet werden, sehr dünn, so daß sie nicht über lange Zeit standhalten. In Sonderfällen haben sich auch verschleißfeste Schichten, die mit dem Metallspritzverfahren aufgebracht wurden, bewährt. Eine wichtige Voraussetzung ist eine feste Haftung auf dem Grundwerkstoff und eine ausreichende Zähigkeit der ' Spritzschicht, die nicht zu Mißbildungen oder zum Abbröckeln neigen darf. Derartige Oberflächenbehandlungen sind diffizil auszuführen und verteuern die Reibscheiben erheblich. Darüberhinaus gelingt es nicht, die Abriebprobleme durch diese Maßnahme voll zu beseitigen. Sie stellen somit ebenfalls noch keine befriedigende Lösung dar.However, a high surface hardness is not the only decisive factor for the abrasion resistance and, moreover, layers which are formed by this process are very thin, so that they do not withstand for a long time. In special cases, wear-resistant layers that have been applied using the metal spraying method have also proven their worth. An important prerequisite is firm adhesion to the base material and sufficient toughness of the spray layer, which must not tend to deform or crumble. Such surface treatments are difficult to carry out and make the friction disks considerably more expensive. In addition, this measure does not completely eliminate the abrasion problems. They are therefore still not a satisfactory solution.

Demgegenüber werden durch die erfindungsgemäßen Verschleiß-­Scheiben die oben geschilderten Probleme weitgehend überwunden. Die erfindungsgemäßen Verschleiß-Scheiben sind dadurch gekennzeichnet, daß sie aus einem Sintermaterial aus Kohlenstoff und Metallen oder deren Legierungen bestehen, das bei gleichzeitig optimalem Selbstheilungsvermögen den Reibungsbeanspruchungen einen größtmöglichen Widerstand gegen Abnutzung entgegensetzt.In contrast, the wear disks according to the invention largely overcome the problems described above. The wear disks according to the invention are characterized in that they consist of a sintered material made of carbon and metals or their alloys, which, with optimal self-healing ability, counteracts the frictional stresses as much as possible against wear.

Die hier erforderlichen sogenannten Friktionswerkstoffe wandeln kinetische Energie in thermische Energie um. Solche Reibungswerkstoffe werden heute auch in großem Umfang im Automobilbau und allgemeinen Maschinenbau benötigt. Hierbei handelt es sich um mehrkomponentige Sinterwerkstoffe mit z.T. äußerst komplexer Zusammensetzung. Auch Sintermaterialien, wie sie in der vorliegenden Erfindung verwendet werden, sind bereits bekannt. Sie enthalten wahlweise z.B. 5 bis 70 % Graphit, 85 bis 30 % Kupfer und evtl. bis zu 10 %, vorzugsweise 8 bis 10 % Zinn, bis zu 15 % Blei und bis zu 12 % Zink. Bei der erfindungsgemäßen Vorrichtung ist ein hoher Kupferanteil im Bereich zwischen 70 und 90 % von Vorteil, bevorzugt über 80 %. Besonders bevorzugt besteht die Metallkomponente nur aus Kupfer. Durch den hohen Kupferanteil ist es möglich die Wärmeleitfähigkeit in großem Maße zu steigern, wobei sie 80 W x K⁻¹ x m⁻¹ überschreiten sollte. Vorzugsweise liegt sie bei 80 bis 200, insbesondere bei 100-150 W x K⁻¹ x m⁻¹. Bei einigen besonders gut geeigneten Materialien, den unten beispielsweise genannten "Metallkohlen" liegt die Wärmeleitfähigkeit bei 125 ± 15.The so-called friction materials required here convert kinetic energy into thermal energy. Friction materials of this type are now also required on a large scale in automobile construction and general mechanical engineering. These are multi-component sintered materials, some of which are extremely complex. Sintered materials as used in the present invention are also known. They contain optionally for example 5 to 70% graphite, 85 to 30% copper and possibly up to 10%, preferably 8 to 10% tin, up to 15% lead and up to 12% zinc. In the device according to the invention, a high copper content in the range between 70 and 90% is advantageous, preferably over 80%. The metal component particularly preferably consists only of copper. Due to the high copper content, it is possible to increase the thermal conductivity to a large extent, whereby it should exceed 80 W x K⁻¹ xm⁻¹. It is preferably 80 to 200, in particular 100-150 W x K⁻¹ xm⁻¹. The thermal conductivity of some particularly well-suited materials, the "metal carbons" mentioned below, is 125 ± 15.

Grundsätzlich kann das Kupfer aber auch durch andere Metalle ersetzt werden, um so die Eigenschaften der gesinterten Verschleiss-Scheiben je nach gewünschter Beanspruchung zu modifizieren. So kann es von Vorteil sein, das Kupfer z.B. durch Eisen, Zinn, Zink oder Blei zu ersetzen oder auch nur mit diesen Elementen zu kombinieren; aber auch die hochschmelzenden Metalle der 4. bis 6. Nebengruppe zeigen als Sintermaterialien mit Kohlenstoff vorteilhafte Luktile, verschleißbeständige Eigenschaften.In principle, however, the copper can also be replaced by other metals in order to modify the properties of the sintered wear washers depending on the desired stress. So it can be advantageous to e.g. to be replaced by iron, tin, zinc or lead or only to be combined with these elements; but also the high-melting metals of the 4th to 6th subgroup, as sintered materials with carbon, show advantageous luctile, wear-resistant properties.

Auch die Struktur beeinflußt die Eigenschaften der benötigten Sinterwerkstoffe, die z.B. durch die scheinbare Dichte ausgedrückt werden kann. Bevorzugt sind Sinterwerkstoffe mit einer scheinbaren Dichte zwischen 4 bis 7 g/cm³, insbesondere zwischen 5 und 6 g/cm³.The structure also influences the properties of the required sintered materials, e.g. can be expressed by the apparent density. Sintered materials with an apparent density of between 4 and 7 g / cm 3, in particular between 5 and 6 g / cm 3, are preferred.

Unter der scheinbaren Dichte ist der Quotient aus Masse und dem makroskopischen Volumen des Materials zu verstehen.The apparent density is the quotient of the mass and the macroscopic volume of the material.

Als besonders gut geeignetes Material für die erfindungsgemäßen Verschleiß-Scheiben haben sich überraschenderweise die sogenannten "Metallkohlen" erwiesen, die zu den ältesten gesinterten Verbundstoffen zählen und die bislang überwiegend als Kollektorbürsten für Elektromotore eingesetzt wurden.Surprisingly, the so-called "metal carbons", which are among the oldest sintered composites, have proven to be a particularly suitable material for the wear disks according to the invention count and so far have mainly been used as collector brushes for electric motors.

Metallkohlen, die sich besonders gut als Material für die erfindungsgemäßen Verschleiß-Scheiben eignen, bestehen aus 80 - 85 % Kupfer, 10 - 16 % Blei und 5 - 9 % Graphit. Sehr gut geeignete handelsübliche Materialien dieser Art sind z.B. die Metallkohlen-Standardqualitäten BDB oder NL der Fa. W.L. Eichberg, Berlin.Metal carbons, which are particularly suitable as a material for the wear disks according to the invention, consist of 80-85% copper, 10-16% lead and 5-9% graphite. Very suitable commercial materials of this type are e.g. the standard metal charcoal qualities BDB or NL from W.L. Eichberg, Berlin.

Die erfindungsgemäße Verschleiß-Scheibe zeichnet sich dadurch aus, daß sie eine optimale Kombination von Verschleißfestigkeit und Selbstheilungsvermögen aufweist, gut wärmeleitend ist und überraschenderweise keine Verfärbungen auf den Garnen, wie bei den gängigen Materialien üblich, hervorruft. Die Kombination dieser positiven Eigenschaften führt zu einer langen störungsfreien Laufzeit der damit ausgestatteten Kräuselmaschinen. Die Kabelqualität zeigt sich dabei besonders in einem gleichmäßigen Kräuselbild über den gesamten Kabelquerschnitt, während bei den üblichen Verfahren in der Praxis oft eine ungleichmäßige sinusförmige bzw. eckige verzahnte Kräuselform auftritt. Durch die gleichmäßige Kräuselbogenform wird eine gute textile Weiterverarbeitung, besonders auch auf Schneid- und Reißkonvertern garantiert.The wear washer according to the invention is distinguished by the fact that it has an optimal combination of wear resistance and self-healing ability, is good heat conductor and, surprisingly, does not cause discoloration on the yarns, as is customary with the common materials. The combination of these positive properties leads to a long, trouble-free runtime of the crimping machines equipped with them. The cable quality is particularly evident in a uniform crimp pattern over the entire cable cross-section, while in the usual methods an irregular sinusoidal or angular toothed crimp shape often occurs in practice. The uniform crimped arch shape guarantees good textile processing, especially on cutting and tearing converters.

Claims (6)

1. Verschleiß-Scheibe für Kräuselkammern, dadurch gekennzeichnet, daß sie aus einem Sinterstoff aus Metall und Kohlenstoff besteht.1. Wear washer for crimping chambers, characterized in that it consists of a sintered material made of metal and carbon. 2. Verschleiß-Scheibe für Kräuselkammern nach Anspruch 1, dadurch gekennzeichnet, daß als Metall des Sinterstoffs gut wärmeleitende Metalle oder Legierungen gewählt werden.2. Wear washer for crimping chambers according to claim 1, characterized in that metals or alloys which are good heat conductors are chosen as the metal of the sintered material. 3. Verschleiß-Scheibe für Kräuselkammern nach mindestens einem der obigen Ansprüche, dadurch gekennzeichnet, daß als eine Metallkomponente des Sinterstoffs Kupfer gewählt wird.3. Wear washer for crimping chambers according to at least one of the above claims, characterized in that copper is chosen as a metal component of the sintered material. 4. Verschleiß-Scheibe für Kräuselkammern nach mindestens einem der obigen Ansprüche, dadurch gekennzeichnet, daß der Kupferanteil des Sinterstoffs über 70 % besonders zwischen 80 und 90 % beträgt.4. Wear disc for crimping chambers according to at least one of the above claims, characterized in that the copper content of the sintered material is over 70%, especially between 80 and 90%. 5. Verschleiß-Scheibe für Kräuselkammern nach mindestens einem der obigen Ansprüche, dadurch gekennzeichnet, daß die scheinbare Dichte des Sinterstoffes zwischen 4 und 7 g/cm³, besonders zwischen 5 und 6 g/cm³ beträgt.5. Wear washer for crimping chambers according to at least one of the above claims, characterized in that the apparent density of the sintered material is between 4 and 7 g / cm³, especially between 5 and 6 g / cm³. 6. Verschleiß-Scheibe für Kräuselkammern nach mindestens einem der obigen Ansprüche, dadurch gekennzeichnet, daß die Wärmeleitfähigkeit dieser Verschleiß-Scheiben über 80, bevorzugt bei 80 - 200 W x K⁻¹ x m⁻¹ liegt.6. Wear washer for crimping chambers according to at least one of the above claims, characterized in that the thermal conductivity of these wear washers is over 80, preferably at 80 - 200 W x K⁻¹ x m⁻¹.
EP90112233A 1989-07-01 1990-06-27 Wearing discs for crimping machines Expired - Lifetime EP0406686B1 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
AT90112233T ATE89343T1 (en) 1989-07-01 1990-06-27 WEAR DISCS FOR GRIPPING MACHINES.

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3921708A DE3921708A1 (en) 1989-07-01 1989-07-01 WEARING DISCS FOR CIRCULAR MACHINES
DE3921708 1989-07-01

Publications (3)

Publication Number Publication Date
EP0406686A2 true EP0406686A2 (en) 1991-01-09
EP0406686A3 EP0406686A3 (en) 1991-01-30
EP0406686B1 EP0406686B1 (en) 1993-05-12

Family

ID=6384120

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90112233A Expired - Lifetime EP0406686B1 (en) 1989-07-01 1990-06-27 Wearing discs for crimping machines

Country Status (7)

Country Link
US (1) US5105513A (en)
EP (1) EP0406686B1 (en)
JP (1) JPH0345731A (en)
AT (1) ATE89343T1 (en)
DE (2) DE3921708A1 (en)
DK (1) DK0406686T3 (en)
ES (1) ES2042149T3 (en)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732434A1 (en) * 1995-03-16 1996-09-18 Fleissner GmbH &amp; Co. Maschinenfabrik Stuffer box crimping device for crimping synthetic yarn tows or such like

Families Citing this family (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE19519882A1 (en) * 1995-05-31 1996-12-12 Hoechst Ag Method of treating a cable of synthetic filaments and method of producing cables of uniformly crimped fibers with a high initial modulus
US5839685A (en) * 1995-07-25 1998-11-24 Chen; Jen Hui Anti-static thread feeding wheel for knitting machinery
AUPP773998A0 (en) * 1998-12-16 1999-01-21 Public Transport Corporation of Victoria Low resistivity materials with improved wear performance for electrical current transfer and methods for preparing same
US6351877B1 (en) 2000-05-31 2002-03-05 Eastman Chemical Company Synthetic fiber crimper, method of crimping and crimped fiber produced therefrom
US7152288B1 (en) * 2005-07-07 2006-12-26 Celanese Acetate Llc Stuffer box crimper and a method for crimping
CN114921682B (en) * 2022-06-28 2023-03-28 北京科技大学广州新材料研究院 High-thermal-conductivity isotropic graphite nodule-copper-based composite material and preparation method thereof

Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237270A (en) * 1963-12-11 1966-03-01 Du Pont Stuffer box crimper with composite crimper discs
GB1460592A (en) * 1973-05-19 1977-01-06 Girling Ltd Method of manufacturing a friction disc
US4006517A (en) * 1975-02-10 1977-02-08 Teijin Limited Stuffer box crimping apparatus

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2311174A (en) * 1940-12-06 1943-02-16 Du Pont Textile crinkler
DE6601717U (en) * 1963-08-19 1969-03-20 Eastman Kodak Co DEVICE FOR CURLING TAPE-SHAPED CABLES
GB1249832A (en) * 1968-11-29 1971-10-13 Teijin Ltd Stuffer crimper
US3618183A (en) * 1970-02-11 1971-11-09 Monsanto Co Insert pressure controller
US3633255A (en) * 1970-03-23 1972-01-11 Du Pont Tow-crimping apparatus
JPS5253720A (en) * 1975-10-29 1977-04-30 Hitachi Ltd Non-orientated cu-carbon fiber compoite and its manufacturing method
US4115908A (en) * 1978-02-06 1978-09-26 Eastman Kodak Company Apparatus for stuffer box crimping
US4330333A (en) * 1980-08-29 1982-05-18 The Valeron Corporation High titanium nitride cutting material
US4395804A (en) * 1981-05-18 1983-08-02 Eastman Kodak Company Cheekplate holder assembly for stuffer box crimper
US4521944A (en) * 1984-01-23 1985-06-11 Eastman Kodak Company Dowel-aligned multiple plate stuffer box crimper construction for filter tow
IT1173178B (en) * 1984-02-02 1987-06-18 Sipa Spa IMPROVED CRETTING MACHINE FOR THE CRETTING OF SYNTHETIC AND ARTIFICIAL FIBERS
US4730371A (en) * 1987-02-17 1988-03-15 E. I. Du Pont De Nemours And Company Coated crimper rolls

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US3237270A (en) * 1963-12-11 1966-03-01 Du Pont Stuffer box crimper with composite crimper discs
GB1460592A (en) * 1973-05-19 1977-01-06 Girling Ltd Method of manufacturing a friction disc
US4006517A (en) * 1975-02-10 1977-02-08 Teijin Limited Stuffer box crimping apparatus

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0732434A1 (en) * 1995-03-16 1996-09-18 Fleissner GmbH &amp; Co. Maschinenfabrik Stuffer box crimping device for crimping synthetic yarn tows or such like

Also Published As

Publication number Publication date
DK0406686T3 (en) 1993-09-27
DE3921708A1 (en) 1991-01-10
ES2042149T3 (en) 1993-12-01
DE59001414D1 (en) 1993-06-17
ATE89343T1 (en) 1993-05-15
US5105513A (en) 1992-04-21
EP0406686B1 (en) 1993-05-12
JPH0345731A (en) 1991-02-27
EP0406686A3 (en) 1991-01-30

Similar Documents

Publication Publication Date Title
DE2333473C3 (en) Process for making a carbon fiber sheet
DE2926616A1 (en) MATERIAL FOR BRAKE PADS
EP0406686B1 (en) Wearing discs for crimping machines
EP0337107B1 (en) Spinning rotor
DD202199A5 (en) FRICTION BELT WITH FIBER MATERIAL, ESPECIALLY IN THE FORM OF GLASS FIBERS OR GLASS YARN, AND A METHOD FOR PRODUCING THE BLANKET
EP0925138A1 (en) High-strength erosion electrode
EP0604710A1 (en) Electric contact body
DE2904841A1 (en) Fibre loosening roller wire - has saw teeth with different hardness zones
DE1469492A1 (en) Method and device for the continuous graphitization of carbon-containing yarns
EP2347044B1 (en) Friction discs
DE19743745A1 (en) Roller saw tooth fitting
DE2443238C3 (en) Friction rotor for friction false twisting of synthetic threads
DE69708766T2 (en) friction material
DE2019382A1 (en) Process for making fibers made of carbon
DE3148065A1 (en) Diamond-faced rope for working stone materials by cutting
DE19702138A1 (en) Press mantle for wet paper web(s)
DE2135537C3 (en) Process for the production of graphite for metal carbon brushes
DE2535527B2 (en) Friction lining, in particular for drum brakes in commercial vehicles
DE2039743A1 (en) Brush for electrical machines
DE2838144A1 (en) Carbon brush for rotating machine - has felt layer of given thickness on trailing edge to increase commutation capacity
DE68928458T2 (en) Ring for spinning machines
DE3836426C1 (en) Electrode
DE2613141C3 (en) Saw wire
DE8213929U1 (en) WRITING TIP
DE2220278C3 (en) Insulating material for an electrical system containing a very electronegative gas

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

PUAL Search report despatched

Free format text: ORIGINAL CODE: 0009013

AK Designated contracting states

Kind code of ref document: A2

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

AK Designated contracting states

Kind code of ref document: A3

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

17P Request for examination filed

Effective date: 19901221

17Q First examination report despatched

Effective date: 19920916

GRAA (expected) grant

Free format text: ORIGINAL CODE: 0009210

AK Designated contracting states

Kind code of ref document: B1

Designated state(s): AT BE CH DE DK ES FR GB GR IT LI LU NL SE

REF Corresponds to:

Ref document number: 89343

Country of ref document: AT

Date of ref document: 19930515

Kind code of ref document: T

ITF It: translation for a ep patent filed
REF Corresponds to:

Ref document number: 59001414

Country of ref document: DE

Date of ref document: 19930617

GBT Gb: translation of ep patent filed (gb section 77(6)(a)/1977)

Effective date: 19930721

ET Fr: translation filed
REG Reference to a national code

Ref country code: GR

Ref legal event code: FG4A

Free format text: 3008326

REG Reference to a national code

Ref country code: DK

Ref legal event code: T3

REG Reference to a national code

Ref country code: ES

Ref legal event code: FG2A

Ref document number: 2042149

Country of ref document: ES

Kind code of ref document: T3

EPTA Lu: last paid annual fee
EAL Se: european patent in force in sweden

Ref document number: 90112233.3

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GB

Payment date: 19980608

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: SE

Payment date: 19980623

Year of fee payment: 9

Ref country code: AT

Payment date: 19980623

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DK

Payment date: 19980624

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: NL

Payment date: 19980625

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: GR

Payment date: 19980630

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: CH

Payment date: 19980701

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: BE

Payment date: 19980722

Year of fee payment: 9

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: LU

Payment date: 19980804

Year of fee payment: 9

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LU

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990627

Ref country code: GB

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990627

Ref country code: DK

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990627

Ref country code: AT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990627

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: SE

Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY

Effective date: 19990629

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: LI

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

Ref country code: GR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

Ref country code: CH

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

Ref country code: BE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 19990630

BERE Be: lapsed

Owner name: SPINNSTOFFFABRIK ZEHLENDORF A.G.

Effective date: 19990630

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: NL

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20000101

REG Reference to a national code

Ref country code: CH

Ref legal event code: PL

GBPC Gb: european patent ceased through non-payment of renewal fee

Effective date: 19990627

EUG Se: european patent has lapsed

Ref document number: 90112233.3

NLV4 Nl: lapsed or anulled due to non-payment of the annual fee

Effective date: 20000101

REG Reference to a national code

Ref country code: DK

Ref legal event code: EBP

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: FR

Payment date: 20000616

Year of fee payment: 11

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: ES

Payment date: 20000620

Year of fee payment: 11

REG Reference to a national code

Ref country code: ES

Ref legal event code: PC2A

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: ES

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20010628

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: FR

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20020228

REG Reference to a national code

Ref country code: ES

Ref legal event code: FD2A

Effective date: 20030203

PGFP Annual fee paid to national office [announced via postgrant information from national office to epo]

Ref country code: DE

Payment date: 20030816

Year of fee payment: 14

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: DE

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050101

PG25 Lapsed in a contracting state [announced via postgrant information from national office to epo]

Ref country code: IT

Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES

Effective date: 20050627

PLBE No opposition filed within time limit

Free format text: ORIGINAL CODE: 0009261

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT