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EP0631961B1 - Elément de guidage de fils textiles à surface améliorée - Google Patents

Elément de guidage de fils textiles à surface améliorée Download PDF

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Publication number
EP0631961B1
EP0631961B1 EP94108859A EP94108859A EP0631961B1 EP 0631961 B1 EP0631961 B1 EP 0631961B1 EP 94108859 A EP94108859 A EP 94108859A EP 94108859 A EP94108859 A EP 94108859A EP 0631961 B1 EP0631961 B1 EP 0631961B1
Authority
EP
European Patent Office
Prior art keywords
thread
guiding component
depth
godets
cut
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.)
Expired - Lifetime
Application number
EP94108859A
Other languages
German (de)
English (en)
Other versions
EP0631961A1 (fr
Inventor
Josef Dr. Bach
Jürgen Dr. Lorenz
Eugen Morach
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.)
Hoechst AG
Original Assignee
Hoechst 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
Priority claimed from DE9309155U external-priority patent/DE9309155U1/de
Priority claimed from DE9311461U external-priority patent/DE9311461U1/de
Application filed by Hoechst AG filed Critical Hoechst AG
Publication of EP0631961A1 publication Critical patent/EP0631961A1/fr
Application granted granted Critical
Publication of EP0631961B1 publication Critical patent/EP0631961B1/fr
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • D—TEXTILES; PAPER
    • D02—YARNS; MECHANICAL FINISHING OF YARNS OR ROPES; WARPING OR BEAMING
    • D02J—FINISHING OR DRESSING OF FILAMENTS, YARNS, THREADS, CORDS, ROPES OR THE LIKE
    • D02J1/00—Modifying the structure or properties resulting from a particular structure; Modifying, retaining, or restoring the physical form or cross-sectional shape, e.g. by use of dies or squeeze rollers
    • D02J1/22—Stretching or tensioning, shrinking or relaxing, e.g. by use of overfeed and underfeed apparatus, or preventing stretch
    • D02J1/225—Mechanical characteristics of stretching apparatus
    • D02J1/226—Surface characteristics of guiding or stretching organs
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H57/00—Guides for filamentary materials; Supports therefor
    • B65H57/24—Guides for filamentary materials; Supports therefor with wear-resistant surfaces
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
    • D—TEXTILES; PAPER
    • D01—NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01H—SPINNING OR TWISTING
    • D01H5/00—Drafting machines or arrangements ; Threading of roving into drafting machine
    • D01H5/18—Drafting machines or arrangements without fallers or like pinned bars
    • D01H5/70—Constructional features of drafting elements
    • D01H5/74—Rollers or roller bearings
    • D01H5/78—Rollers or roller bearings with flutes or other integral surface characteristics
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B65—CONVEYING; PACKING; STORING; HANDLING THIN OR FILAMENTARY MATERIAL
    • B65H—HANDLING THIN OR FILAMENTARY MATERIAL, e.g. SHEETS, WEBS, CABLES
    • B65H2701/00—Handled material; Storage means
    • B65H2701/30—Handled filamentary material
    • B65H2701/31—Textiles threads or artificial strands of filaments

Definitions

  • the present invention relates to thread-guiding components of a plant for the production, treatment and processing of fiber materials with a surface which comes into contact with the fiber materials or their raw materials, the properties of which change little over a long period of time during operation, and which therefore compared to corresponding conventional components have a significantly improved service life.
  • Numerous components are used in the production of synthetic fibers, which come into close contact with the spun, fast-running threads and have to perform various tasks.
  • Examples of such components are bundling and deflecting elements which are intended to combine filament coulters or to change the running direction of filament bundles, drawing pins which have to determine the drawing point of filament webs, take-off godets, i.e. rolls which pull the filament sheets from the spinneret, drawing godets, between which the filament bundles are stretched and thus oriented and consolidated, swirling nozzles, in which the continuous filament bundles are swirled by blown compressed air in order to improve the textile effect of the threads and the cohesion of the individual filaments of the threads (thread closure).
  • the filaments come into sliding contact with the components, such as, for example, in the case of deflection elements or swirling nozzles, or they should come into more or less positive or at least non-positive contact with the components, such as in the case of take-off or drawing godets or in sliding contact, but with which defined forces are to be transferred, such as for example with stretching pins.
  • Widely used godets are made the surface of a ceramic material, preferably of a ceramic mixture of Al 2 O 3 3 to 20 wt .-% of TiO 2, in particular approximately 13 wt.% TiO 2.
  • These standard godets can be used in both delivery and fume cupboards and allow at least practical continuous operation of a spinning system.
  • the service life of these godets still leaves something to be desired, in particular the service life is spread statistically from godet to godet and, in addition, this fluctuation is increased by different loads on the godets, depending on the task at hand.
  • the person skilled in the art recognizes the increasing wear of the godet from the increase in defects (filament breaks) and the additional problem then arises the large number of godets installed in a spinning system to find the one that causes these defects.
  • the surface of the fiber material or raw material which comes into contact with the Component consists of a first 0.1 to 10.0 microns, preferably 1 to 5 microns thick layer of nitrides and / or carbides of titanium or chromium, which on a component or a second layer of a material with a specific electrical resistance of at most 25, preferably 20 to about 1.5 ⁇ ⁇ cm is deposited.
  • the present invention thus relates to thread-carrying components, in particular godets, with a defined surface topography.
  • the components according to the invention can consist entirely of the material with a specific electrical resistance of at most 25, preferably 20 to about 1.5 ⁇ ⁇ cm.
  • a “thick layer” applied as a coating usually has a layer thickness of 100 to 400 ⁇ m, preferably 150 to 300 ⁇ m.
  • the surface topography is measured with a device that scans the contour of the surface along a measurement line of usually 5 mm in length with a stylus, the tip of which expediently has a rounding radius of approximately 5 ⁇ m.
  • the specified topography values relate to such a scan.
  • a suitable device for determining the surface topography is, for example, a Perthometer M4P from Feinprüf-Perthen, equipped with a TKX 300 stylus with a rounding of 5 ⁇ m.
  • the deflections of the needle are stored digitally and the course of the surface profile thus obtained is evaluated mathematically.
  • a graphical representation of the surface profile along the measuring line can take place. 1 shows a schematic representation of such a surface profile to explain the terms "maximum roughness depth” and "average roughness depth”.
  • FIG. 2 serves to explain the term “load share”.
  • the roughness is the distance in microns between the lowest point and the highest point of a profile section.
  • a measuring section l m is divided into 5 equal sections l 0 and its individual roughness depth R Z is determined for each section l 0 .
  • the arithmetic mean of the 5 individual values R Z1 , R Z2, etc. obtained is the value of the average roughness depth R Z.
  • R Z 1/5 ⁇ (R Z1 + R Z2 + R Z3 + R Z4 + R Z5 )
  • the maximum roughness depth R max is the largest of the five determined individual values of the roughness depth.
  • FIG. 2 shows a section of a surface section profile in which the section planes (1) and (2) are shown in dashed lines.
  • the cutting plane (1) cuts the profile in the areas (11), (12) and (13) which are drawn out more strongly, the cutting plane (2) in the areas (21), (22), (23) and (24).
  • the sum of the length l is of these areas in relation to the total length of the measuring section l X is the load bearing component TA S in the depth of cut S.
  • the load factor TA S is therefore a function of the depth of cut S.
  • TA S f (S)
  • FIG. 3 shows a graphical representation of such a function in the range from 10 to 90% of the load.
  • Components according to the invention are particularly preferred, in particular godets, which still have a particularly hard outer layer on the surface of the defined topography described above.
  • the outer layer which is to be regarded as a so-called “thin layer” due to its small thickness, preferably consists of titanium nitride (TiN) and / or titanium carbonitride (Ti (C, N)) and / or chromium nitride (CrN), in particular titanium nitride (TiN) , and / or titanium carbonitride (Ti (C, N)).
  • the thin layers made of these materials have intrinsic colors. Titanium nitride layers have yellow, mixed crystal layers with titanium carbide bronze or brownish shades, titanium carbonitride layers have a blue-gray to violet color and chrome nitride layers are white to brown-gray.
  • the composition of the material is selected such that outer layers with a golden yellow to bronze shade are obtained.
  • the superiority of the devices according to the invention results from the interaction of the outer layer with the structure of the surface on which it is applied is deposited.
  • Godets with the surface structure according to the invention i.e. with a roughness depth of 15 to 25 ⁇ m are preferably used for the non-positive conveying of fiber materials or for guiding and bundling fiber materials, e.g. as high-wrap godets in take-off and drafting units or in swirling nozzles.
  • the components according to the invention can be formed, for example, by pressing and sintering processes known per se from metal-ceramic materials with a specific resistance of at most 25 ⁇ ⁇ cm.
  • Such components can e.g. B. Swirl nozzles.
  • Larger components, such as godets, on the other hand, are expediently made as usual from suitable steels and provided, at least in the regions of the surface thereof which come into contact with the fiber material, with a “thick layer” of such a metal-ceramic material.
  • the hard outer layer is located on this “thick layer” of defined surface structure.
  • FIG. 4 schematically shows a cross section perpendicular to the center line of a cylindrical godet (41) according to the invention, with the base body (42) made of metal, the thick layer (43) deposited on its surface with a roughness depth as defined above and the outer layer applied thereon ( 44), the dimensions of the godet radius and layer thicknesses shown in the figure not being drawn to scale in order to ensure sufficient clarity.
  • a preferred metal-ceramic material for the thick layer consists of tungsten carbide (WC) with a carbon content of at least 6.15% by weight with the addition of 10 to 20% by weight of a metal from group 8 of the periodic table, preferably cobalt.
  • WC tungsten carbide
  • a metal-ceramic material made of 85 to 88% by weight of WC and 15 to 12% by weight of cobalt has proven to be a particularly suitable material for such a thick layer.
  • the material can also contain up to 5% by weight of other additives customary in hard materials.
  • the components according to the invention are produced by first producing a corresponding component with a surface which has the topography defined above. Depending on the size and shape of the device according to the invention, this is done either by producing the desired component, for example by pressing and sintering processes known per se, from the metal-ceramic material described above, the roughness depth R Z of the surface being 15 is set to 25 microns, or the component made of conventional steel is made by known plasma spraying processes, such as, for example, in "Ullmanns Encyklopedia of Technical Chemistry", fourth edition, volume 16, page 546, and volume 2, pages 400-405 and those therein cited primary literature are described, coated with a 100 to 400 ⁇ m thick thick film made of the above thick film material. The spray parameters are set so that the topography described above is achieved.
  • the outer layer made of the materials mentioned above can then be evaporated on the thick layer produced in this way in order to produce the preferred embodiment.
  • the vapor deposition of thin layers is also a known operation and is described, for example, in "Ullmanns Encyklopedia of industrial chemistry", fourth edition, volume 10, pages 257 to 260, and the primary literature cited therein.
  • the following table shows the differences in the service life of a godet coated with a conventional surface made of Al 2 O 3 with 13% by weight TiO 2 and a godet designed according to the invention under identical operating conditions and the same production rate.
  • the end of the service life is defined by the fact that the roughness has dropped below an R z value of 10 ⁇ m and that godet coils form despite suitable scraping devices.
  • table Type of coating Tool life (days) Remarks Al 2 O 3 / TiO2 on steel (conventional standard godet; comparison) 100 Degree of wear of the surface not visually recognizable.
  • TiN thin film on WC / Co thick film (according to the invention) > 300 Degree of wear of the surface visually recognizable.
  • a particular advantage of the preferred galette coated according to the invention with an outer layer is that its surface condition can be recognized by its color and therefore a targeted exchange can be carried out before the quality of the fiber material produced deteriorates.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Textile Engineering (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Plasma & Fusion (AREA)
  • Guides For Winding Or Rewinding, Or Guides For Filamentary Materials (AREA)
  • Spinning Methods And Devices For Manufacturing Artificial Fibers (AREA)
  • Spinning Or Twisting Of Yarns (AREA)
  • Chemical Vapour Deposition (AREA)
  • Inorganic Fibers (AREA)
  • Yarns And Mechanical Finishing Of Yarns Or Ropes (AREA)

Claims (6)

  1. Composant formant guide-fil dans des dispositifs pour fabriquer, manipuler et traiter des matériaux fibreux, qui comportent au moins dans les zones venant en contact avec le matériau fibreux, une surface formée d'un matériau possédant une résistance électrique spécifique égale au maximum à 25 et comprise de préférence entre 20 et environ 1,5 µΩ.cm, qui est caractérisé en ce que
    a) la valeur moyenne Rmax, déterminée à partir de 5 mesures, de sa profondeur de rugosité maximale Rmax est comprise entre 20 et 30 µm, avec une dispersion de 3 à 8 µm, et
    b) la valeur moyenne Rz, déterminée à partir de 5 mesures, de sa profondeur de rugosité moyenne Rz se situe entre 15 et 25 µm, avec une dispersion de 2 à 5 µm.
  2. Composant formant guide-fil selon la revendication 1, caractérisé en ce que la surface est agencée de telle sorte que
    c) une partie portante de 10 % se calcule dans un plan à une profondeur de coupe de 6 à 12 µm et une partie portante de 90 % se calcule dans un plan à une profondeur de coupe de 18 à 25 µm, et
    d) la pente de la profondeur de coupe en fonction de la partie portante se situe entre 0,11 et 0,16 µm/% dans une gamme comprise entre 30 et 70 % pour la partie portante.
  3. Composant formant guide-fil selon au moins l'une des revendications 1 ou 2, caractérisé en ce que, soit il est constitué entièrement par un cermet possédant une résistance électrique spécifique égale au maximum à 25 et comprise de préférence entre 20 et environ 1,5 µΩ.cm, soit il possède du moins une couche séparée d'un tel matériau dans les zones qui viennent en contact avec le matériau fibreux.
  4. Composant formant guide-fil selon l'une au moins des revendications 1 à 3, caractérisé en ce qu'il comporte une couche extérieure formée de nitrure de titane (TiN) et/ou de carbonitrure de titane (Ti(C,N)) et/ou de nitrure de chrome (CrN).
  5. Composant formant guide-fil selon l'une au moins des revendications 1 à 4, caractérisé en ce que le cermet possédant une résistance électrique spécifique égale au maximum à 25 et comprise de préférence entre 20 et environ 1,5 µΩ.cm, est formée par du carbure de tungstène (WC) possédant une teneur en carbone d'au moins 6,15 % en poids avec une addition de 10 à 20 % en poids d'un métal du groupe 8 du système périodique, de préférence du cobalt.
  6. Composant formant guide-fil selon l'une au moins des revendications 1 à 5, caractérisé en ce qu'il s'agit d'une galette.
EP94108859A 1993-06-19 1994-06-09 Elément de guidage de fils textiles à surface améliorée Expired - Lifetime EP0631961B1 (fr)

Applications Claiming Priority (4)

Application Number Priority Date Filing Date Title
DE9309155U 1993-06-19
DE9309155U DE9309155U1 (de) 1993-06-19 1993-06-19 Fadenführendes Bauteil mit verbesserter Oberfläche
DE9311461U 1993-07-31
DE9311461U DE9311461U1 (de) 1993-07-31 1993-07-31 Fadenführendes Bauteil mit verbesserter Oberfläche

Publications (2)

Publication Number Publication Date
EP0631961A1 EP0631961A1 (fr) 1995-01-04
EP0631961B1 true EP0631961B1 (fr) 1997-12-10

Family

ID=25960953

Family Applications (1)

Application Number Title Priority Date Filing Date
EP94108859A Expired - Lifetime EP0631961B1 (fr) 1993-06-19 1994-06-09 Elément de guidage de fils textiles à surface améliorée

Country Status (4)

Country Link
US (1) US5528799A (fr)
EP (1) EP0631961B1 (fr)
JP (1) JPH0711510A (fr)
DE (1) DE59404761D1 (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103469386A (zh) * 2013-09-13 2013-12-25 常熟市建华织造有限责任公司 一种实用型牵引下罗拉的制备方法

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JPH08303470A (ja) * 1995-05-12 1996-11-19 Ntn Corp 転がり軸受
DE19822265B4 (de) * 1997-06-13 2006-07-06 Rieter Ingolstadt Spinnereimaschinenbau Ag Offenend-Spinnrotor und Verfahren zu seiner Herstellung
DE19743597A1 (de) * 1997-10-02 1999-04-08 Fritz Stahlecker OE-Spinnrotor
JP3632153B2 (ja) * 2000-11-06 2005-03-23 株式会社東京精密 粗さ測定方法及び粗さ測定装置
DE10331503A1 (de) * 2003-07-10 2005-02-10 Maschinenfabrik Rieter Ag Fadenleitelement zum Führen von Fäden
US8137752B2 (en) * 2003-12-08 2012-03-20 Syscom Advanced Materials, Inc. Method and apparatus for the treatment of individual filaments of a multifilament yarn
US20050123681A1 (en) * 2003-12-08 2005-06-09 Jar-Wha Lee Method and apparatus for the treatment of individual filaments of a multifilament yarn
EP1612307B1 (fr) * 2004-06-18 2011-03-16 Rieter Ingolstadt GmbH Dispositif défibreur pour métiers à filer
JP5251118B2 (ja) * 2007-12-21 2013-07-31 村田機械株式会社 ドラフトローラ
JP5629978B2 (ja) * 2008-10-17 2014-11-26 セイコーエプソン株式会社 トナー担持ローラ、現像装置、及び画像形成装置
DE102010035639A1 (de) 2009-09-21 2011-04-07 Oerlikon Textile Gmbh & Co. Kg Vorrichtung zur Führung eines synthetischen Fadens
DE102010035584A1 (de) 2009-09-22 2011-03-24 Oerlikon Textile Gmbh & Co. Kg Bauteil zur Führung eines synthetischen Fadens
WO2012092505A1 (fr) 2010-12-29 2012-07-05 Syscom Advanced Materials Fil hybride constitué d'un métal et de fibres métallisées
CN103484994A (zh) * 2013-09-13 2014-01-01 常熟市建华织造有限责任公司 一种实用型牵引下罗拉

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GB1037629A (en) * 1963-10-30 1966-07-27 British Nylon Spinners Ltd Apparatus for handling and guiding a moving continuous elongated structure
DE2215924A1 (de) * 1972-04-01 1973-10-11 Drees & Co Gmbh Maschine zur behandlung von leder
DE3218402C2 (de) * 1982-05-15 1985-03-21 Davy McKee AG, 6000 Frankfurt Verfahren zum Oberflächenbeschichten von fadenführenden Bauteilen und durch das Verfahren hergestellte fadenführende Bauteile
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JPH01317963A (ja) * 1988-06-16 1989-12-22 Yuasa Itomichi Kogyo Kk 接糸部材
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Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103469386A (zh) * 2013-09-13 2013-12-25 常熟市建华织造有限责任公司 一种实用型牵引下罗拉的制备方法

Also Published As

Publication number Publication date
EP0631961A1 (fr) 1995-01-04
DE59404761D1 (de) 1998-01-22
JPH0711510A (ja) 1995-01-13
US5528799A (en) 1996-06-25

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