DE102007056566A1 - Coating process for mounting ring of disintegrating roll involves applying nonferrous coating, nickel-phosphorus alloy coating and heat treatment - Google Patents

Coating process for mounting ring of disintegrating roll involves applying nonferrous coating, nickel-phosphorus alloy coating and heat treatment

Info

Publication number
DE102007056566A1
DE102007056566A1 DE200710056566 DE102007056566A DE102007056566A1 DE 102007056566 A1 DE102007056566 A1 DE 102007056566A1 DE 200710056566 DE200710056566 DE 200710056566 DE 102007056566 A DE102007056566 A DE 102007056566A DE 102007056566 A1 DE102007056566 A1 DE 102007056566A1
Authority
DE
Germany
Prior art keywords
coating
nickel
ring
characterized
fitting ring
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
DE200710056566
Other languages
German (de)
Other versions
DE102007056566B4 (en
Inventor
Brigitte Riede
Harald Schneider
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.)
Saurer Spinning Solutions GmbH and Co KG
Original Assignee
Oerlikon Textile GmbH and Co 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 Oerlikon Textile GmbH and Co KG filed Critical Oerlikon Textile GmbH and Co KG
Priority to DE102007056566.8A priority Critical patent/DE102007056566B4/en
Publication of DE102007056566A1 publication Critical patent/DE102007056566A1/en
Application granted granted Critical
Publication of DE102007056566B4 publication Critical patent/DE102007056566B4/en
Application status is Active legal-status Critical
Anticipated expiration legal-status Critical

Links

Classifications

    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01HSPINNING OR TWISTING
    • D01H4/00Open-end spinning machines or arrangements for imparting twist to independently moving fibres separated from slivers; Piecing arrangements therefor; Covering endless core threads with fibres by open-end spinning techniques
    • D01H4/30Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls
    • D01H4/32Arrangements for separating slivers into fibres; Orienting or straightening fibres, e.g. using guide-rolls using opening rollers
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/06Surface hardening
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
    • C21D9/00Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
    • C21D9/18Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for knives, scythes, scissors, or like hand cutting tools
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601Process or apparatus
    • C23C18/1633Process of electroless plating
    • C23C18/1646Characteristics of the product obtained
    • C23C18/165Multilayered product
    • C23C18/1651Two or more layers only obtained by electroless plating
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/1601Process or apparatus
    • C23C18/1633Process of electroless plating
    • C23C18/1689After-treatment
    • C23C18/1692Heat-treatment
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C18/00Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating
    • C23C18/16Chemical coating by decomposition of either liquid compounds or solutions of the coating forming compounds, without leaving reaction products of surface material in the coating; Contact plating by reduction or substitution, e.g. electroless plating
    • C23C18/31Coating with metals
    • C23C18/32Coating with nickel, cobalt or mixtures thereof with phosphorus or boron
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C26/00Coating not provided for in groups C23C2/00 - C23C24/00
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING 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
    • C23C28/00Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D
    • C23C28/02Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material
    • C23C28/021Coating for obtaining at least two superposed coatings either by methods not provided for in a single one of groups C23C2/00 - C23C26/00 or by combinations of methods provided for in subclasses C23C and C25C or C25D only coatings only including layers of metallic material including at least one metal alloy layer
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84Card clothing; Manufacture thereof not otherwise provided for
    • DTEXTILES; PAPER
    • D01NATURAL OR MAN-MADE THREADS OR FIBRES; SPINNING
    • D01GPRELIMINARY TREATMENT OF FIBRES, e.g. FOR SPINNING
    • D01G15/00Carding machines or accessories; Card clothing; Burr-crushing or removing arrangements associated with carding or other preliminary-treatment machines
    • D01G15/84Card clothing; Manufacture thereof not otherwise provided for
    • D01G15/88Card clothing; Manufacture thereof not otherwise provided for formed from metal sheets or strips
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE BY DECARBURISATION, TEMPERING OR OTHER TREATMENTS
    • C21D2251/00Treating composite or clad material
    • C21D2251/02Clad material

Abstract

The present invention relates to a method for coating a clothing ring (17, 30) of an opening roller (1) for dissolving chemical fiber material, to which at least two layers are applied by chemical coating, characterized by the method steps, - that on the fitting ring (17, 30 ) a first layer is applied as a base coat of a non-ferrous metal, - that on the base coat at least one further hardstoffkörperfreie layer based on a nickel-phosphorus alloy is applied and - that the coated fitting ring (17, 30) is then subjected to a heat treatment, wherein the heat treatment is performed in a temperature range lower than the tempering temperature of the base material of the fitting ring (17, 30).

Description

  • The The present invention relates to a method for coating a fitting ring an opening roller according to the preamble of claim 1 and a fitting ring for an opening roller according to the preamble of claim 9.
  • opening rollers For open-end spinning devices are known in various embodiments. Such opening rollers serve to deliver a delivered in sliver cans Sliver before feeding into the high speed rotating spin agent the open-end spinning device to dissolve in individual fibers. Such opening rollers have for this purpose on their circumference a tear structure containing the fed sliver combs and dissolves into its individual fibers. The opening rollers differ among others in the Training their tearing tools, the so-called trimming rings.
  • So it is from the DE 35 151 53 C2 known to form the fitting ring as a so-called solid ring, that is, the fitting ring is made of a solid, hardened steel ring. In this case, in order to form the tearing tool, at least one circumferential groove in the circumferential direction and several notches extending essentially orthogonally thereto are ground into the circumferential surface of the fitting ring. Such solid rings are characterized by a high degree of functionality.
  • Furthermore, from the DE 198 13 991 A1 a fitting ring, in which a clothing wire is applied helically to the lateral surface of a cylindrical body. In this case, the basic body consisting of a relatively soft metallic material, for example aluminum, is provided with a spiral groove on its lateral surface. In this groove of the clothing wire is inserted and then fixed there mechanically. Both types of clothing rings have in common that as a wear protection, a multilayer, hardstoffkörperhaltige coating, in particular a nickel-diamond coating is applied.
  • The Nickel-diamond coating, however, proves to be disadvantageous if the processing of man-made fibers is intended. In the processing of Chemical fibers, in particular for producing coarse yarns Yarn numbers below Nm 14, is a stable spinning process while maintaining all quality features of the spun yarn difficult to reach. The provided with the nickel-diamond coating Set rings have a high surface roughness, the damage to the broken down to individual fibers chemical fiber material leads, which in the subsequent spinning process a significant Increase of thread breaks result. Likewise is on Reason for the damage of chemical fibers a reduction of Strength values and the elongation values recorded.
  • task The present invention is a process for coating a fitting ring of an opening roller for processing of chemical fibers, through which a dimensionally stable surface with high wear resistance of the fitting ring is reached. In addition, the invention is the task an attachment ring for an opening roller to provide, characterized by a high wear resistance taking into account the desired yarn quality characterized in the processing of chemical fibers.
  • The Tasks are inventively by the characterizing Features of the method claim 1 and the device claim 9 solved.
  • advantageous Further developments are subject of the dependent claims 2 to 8 and subclaims 10 and 11.
  • According to claim 1, a method for coating a fitting ring of an opening roller is proposed, which is provided with at least two layers, wherein on the fitting ring a base coat of a non-ferrous metal is applied, the fitting ring with at least one further hardstoffkörperfreien layer based on a nickel-phosphorus Alloy is coated, and then the coated fitting ring is subjected to a heat treatment, wherein the heat treatment is carried out in a temperature range which is below the tempering temperature of the base material of the fitting ring. The base coat applied first serves as a carrier layer for the wear and corrosion protection layer of a nickel-phosphorus alloy to be applied in the subsequent process step. A significant advantage of the nickel-phosphorus coating consists in the constant dimensional stability, that is, the uniform layer distribution on the surface of the fitting ring, which is achieved by dispensing with hard material body. It is achieved over the coating according to the prior art, a very uniform surface topography, which provides little resistance to the dissolving chemical fiber material. In addition to corrosion resistance, the nickel-phosphor coating therefore has excellent tribological properties with regard to friction and wear protection. The dissolving chemical fiber material therefore has less damage through the surface of the fitting ring, as is the case in the prior art with conventional nickel-hard material coating. The abandonment of the Hard material body in the coating, by the prior art, the wear protection of the fitting ring is achieved is made possible by the inventive method by the subsequent heat treatment is performed below the tempering temperature of the base material of the fitting ring, whereby a high hardness of the surface is achieved. In this case, a hardness increase to up to 1200 HV of the nickel-phosphorus layer can be achieved.
  • there should heat treatment at a temperature below be performed by 320 ° Celsius. To this Way can be a hard waste from the tip area avoid tearing elements forming the fitting ring. moreover can be the occurrence of microcracks in the coating reduce, due to the different expansion coefficients the base material of the clothing ring and the coating at intensified above 320 ° C temperatures occur.
  • advantageously, should be the heat treatment over a period of time from more than 3 hours to 6 hours, to the desired hardness of the surface of the fitting ring to reach.
  • According to claim 4 it is suggested that the final heat treatment of the fitting ring carried out in the absence of oxygen becomes. The exclusion of oxygen during the heat treatment causes no discoloration of the Dressing rings comes. Carrying out the heat treatment under exclusion of oxygen, for example, under a protective gas atmosphere or in a vacuum oven.
  • advantageously, can the coating with a total thickness between 10 microns and 40 microns are executed, preferably between 15 μm and 30 μm. The applied layer thickness depends on the load and the field of application of the Bite ring, in particular according to the properties of the auflösösenden Chemical fiber material.
  • In a development of the invention can be provided that on the applied as a second layer first nickel-phosphorus layer a second nickel-phosphorus layer is applied, their application in a coating bath with identical parameters As the application of the first nickel-phosphorus layer.
  • to Application of the second nickel-phosphorus layer, the inner Lateral surface of the fitting ring after application of the first nickel-phosphorus layer are covered before the fitting ring the coating bath is fed again to a second Nickel-phosphorus layer to apply. In this way, the coating becomes avoiding the inside of the fitting ring with another layer, so that when arranging the fitting ring on a the drive serving roller body by means of sliding or play the required for this fit dimensions be while the outer surface of the fitting ring provided with the desired layer thickness of the wear layer becomes. By the cover of the inside of the fitting ring is achieved that the second nickel-phosphorus layer only on the outside of the fitting ring is applied, the directly with the dissolving chemical fiber material in Touch comes.
  • there can be the first nickel-phosphorus layer in one thickness be applied between 5 microns and 10 microns. This Primarily serves for the corrosion protection of the inside of the fitting ring, which is pressed onto the roller body.
  • According to claim 9, the second nickel-phosphorus layer in one thickness be applied between 10 microns and 25 microns. By the application of the third layer is in conjunction with the second Layer the required thickness of the wear protection layer reached the fitting ring. According to claim 9 a fitting ring for an opening roller is proposed, whose surface is provided with a coating, having at least two layers, wherein the fitting ring with a base coat of a non-ferrous metal and at least another, hardstoffkörperfreien layer based a nickel-phosphorus alloy is provided. While processing of chemical fibers with a coated according to the invention Bite ring is also under coarse yarns with yarn counts below Nm 14 a stable spinning process while retaining all quality features of the spun yarn. The number of thread breaks in the processing of chemical fibers can be compared the use of clothing rings with a nickel-diamond coating significantly lower.
  • The Invention is illustrated below with reference to one in the drawings Embodiment explained in more detail.
  • It demonstrate:
  • 1 an opening roller with a rotatably mounted, cylindrical roller body;
  • 2 a fitting ring in section.
  • The invention is explained in more detail with reference to an exemplary embodiment shown in the drawings. 1 shows an opening roller with egg rotatably mounted, cylindrical roller body and a Sägezahngarnitur. In the 1 With 1 designated, in an opening roller housing, not shown, rotating opening roller is basically known in connection with open-end spinning devices. The opening roller 1 has the task of disassembling a sliver fed to it via a feed roller into individual fibers. The individual fibers are then fed via a Faserleitkanal in a spinning member, such as a spinning rotor.
  • Such opening rollers 1 Run during the spinning process usually with speeds between 6000 and 12000 U / min.
  • The opening roller 1 has a bearing shaft 2 , on the end of a so-called Antriebswirtel 3 is fixed. The drive whorl 3 is acted upon during the spinning operation by a tangential belt, not shown. The bearing shaft is about roller bearings 4 rotatable within a bearing housing 5 stored. The bearing housing 5 is in turn set in a bearing bracket, not shown, of an opening roller housing and there via a securing element which the plastic ring 6 tangentially passed through, arrested.
  • Front side is on the bearing shaft 2 a roll body 7 arranged. The roll body 7 is non-rotatably via a press fit with the bearing shaft 2 connected. The roll body 7 has a cylindrical shape and has a flange on the back 8th on. The surface of the roller body 7 is preferably smooth. Front has the opening roller 1 over another flange 11 that, for example, about a bolt 12 and a compression spring 13 , with the bearing shaft 2 connected is.
  • On the surface of the cylindrical roller body 7 is either a direct one as a solid ring 30 executed fitting ring according to 2 fixable or a saw tooth set 10 is on a support element 14 mounted, which is part of a fitting ring 17 are. The 1 shows the embodiment of a sawtooth 10 and the carrier element 14 formed fitting ring 17 , The front flange 11 fixes the sawtooth in the assembled state 10 on the roll body 7 , The sawtooth set 10 has a schraubfederartig shaped body 15 on, which may have different embodiments in cross section.
  • In the 1 illustrated sawtooth 10 is with the turns of her body 15 in a helical groove 9 of the carrier element 14 admitted. The main body 15 has an approximately rectangular cross-sectional shape. The determination of the basic body 15 in the groove 9 occurs positively or positively. The carrier element 14 is by sliding or clearance fit on the roll body 7 arranged, whereby a replaceability of the fitting ring 17 is reached. The sawtooth set 10 has a variety of tear elements 16 , each radially from the main body 15 protrude.
  • The representation in 2 shows a manufactured as a solid ring and, for example, made of steel fitting ring 30 consisting essentially of a tubular base body 31 with an annular centering shoulder 32 in the region of its inner diameter. As can be seen, the fitting ring 30 formed on its outer circumference as a ripping tool. In the area of the outer circumference of the fitting ring 30 are a variety of teeth 33 arranged by milling a circumferentially helical groove 34 as well as substantially parallel to the axis of rotation 35 running punctures 36 are formed.
  • The inventive method is based on the carrier element 14 the opening roller 1 according to the 1 described. The method is also in the same way on the ring formed as a solid ring 30 according to the 2 applicable. The carrier element 14 is provided with a multi-layer, chemically applied nickel-phosphor coating, which serves to protect against corrosion and wear. In accordance with the method according to the invention, at least two layers are thereby applied to the carrier element 14 of which the first applied layer is formed as a base coat and the at least one subsequent as a wear and corrosion protection layer.
  • Before the start of the coating process, the carrier element 14 subjected to treatment with a stain to remove oxide layers and to activate the passive surface. This will increase the reactivity of the surface by removing or chemically transforming inactive substance on the surface of the support member 14 reached. Activation of the surface of the carrier element 14 is a prerequisite for the subsequent coating process to ensure adequate wetting or adhesion of the coatings.
  • In the subsequent process step, a base coat of a non-ferrous metal such as nickel is applied, which is the carrier element 14 completely surrounds. The thickness of the base coat is between 0.5 μm and 3 μm. The applied primer coating is to be seen as a pure carrier layer for the subsequent coatings.
  • Subsequently, in a chemical bath at least a second layer, a nickel-phosphorus layer, which is the carrier element 14 completely surrounds, applied, which serves the wear protection. As the carrier element 14 on the roll body 7 the opening roller 1 should be applied to its inner circumference not too large coating thickness to be applied to the sliding fit on the roll body 7 comply with the required fitting dimensions. Therefore, the coating process is interrupted by reaching a layer thickness of the first nickel-phosphorus layer of about 5 microns to 10 microns and into the carrier element 14 a cover is introduced, which completely covers the inner surface. Following this, the carrier element 14 fed once more to the chemical bath to achieve the wear resistance layer thickness of the wear protection layer by applying an additional second nickel-phosphorus layer. The process of applying the second nickel-phosphorus layer to the first nickel-phosphorus layer takes place in the chemical bath while maintaining the bath parameters set for the application of the first nickel-phosphorus layer. The thickness of the third layer may vary between 10 μm and 25 μm depending on the degree of stress and the application. The selected concentration of the phosphorus in the nickel bath depends on the desired hardness of the surface. With increasing phosphorus content, a higher hardness of the surface can be achieved.
  • The completion of the coating process is followed by a heat treatment to achieve the curing of the still relatively soft nickel-phosphorus coating at this time. This process takes place in an atmosphere with exclusion of oxygen, for example in a vacuum oven or under a protective gas atmosphere. In this case, the temperature is chosen below the tempering range of the support element to be cured, ie below 320 ° C, to avoid a drop in hardness in the region of the tips of the support element. At temperatures below 320 ° C, the desired hardness of the surface of the fitting ring 17 . 30 to achieve the heat treatment is carried out over a period of more than 3 hours to 6 hours.
  • Moreover, microcracks occur below this temperature, caused by the different coefficients of expansion of the nickel layer and the steel matrix, as is usual at temperatures above the tempering range. By the method according to the invention is a hardness increase of the surface of the fitting ring 17 . 30 reachable on bi to 1200 HV. In addition, the adhesive strength is increased because the compressive stress has been increased.
  • QUOTES INCLUDE IN THE DESCRIPTION
  • This list The documents listed by the applicant have been automated generated and is solely for better information recorded by the reader. The list is not part of the German Patent or utility model application. The DPMA takes over no liability for any errors or omissions.
  • Cited patent literature
    • - DE 3515153 C2 [0003]
    • - DE 19813991 A1 [0004]

Claims (11)

  1. Process for coating a fitting ring ( 17 . 30 ) an opening roller ( 1 ) for the dissolution of chemical fiber material, to which at least two layers are applied by chemical coating, characterized by the method steps, - that on the fitting ring ( 17 . 30 ) is applied as a base coat of a non-ferrous metal, a first layer, - that on the base coat at least one further hardstoffkörperfreie layer based on a nickel-phosphorus alloy is applied, and - that the coated fitting ring ( 17 . 30 ) is subsequently subjected to a heat treatment, wherein the heat treatment is carried out in a temperature range which is below the tempering temperature of the base material of the fitting ring ( 17 . 30 ) lies.
  2. Method according to claim 1, characterized in that that the heat treatment at a temperature below of 320 ° Celsius.
  3. Method according to one of claims 1 or 2, characterized in that the heat treatment over a period of more than 3 hours up to 6 hours becomes.
  4. Method according to one of claims 1 to 3, characterized in that the heat treatment under Exclusion of oxygen is performed.
  5. Method according to one of claims 1 to 4, characterized in that on the first nickel-phosphorus layer a second nickel-phosphorus layer is applied, their application in a coating bath with identical parameters As the application of the first nickel-phosphorus layer.
  6. A method according to claim 5, characterized in that the inner circumferential surface of the fitting ring ( 17 . 30 ) is covered after the application of the second coating, before the ring ( 17 . 30 ) is returned to the coating bath.
  7. Method according to one of claims 5 or 6, characterized in that the first nickel-phosphorus layer in a thickness between 5 microns and 10 microns is applied.
  8. Method according to one of claims 5 to 7, characterized in that the second nickel-phosphorus layer in a thickness between 10 microns and 25 microns is applied.
  9. Ring ring ( 17 . 30 ) for an opening roller ( 1 ) for the dissolution of man-made fiber material whose surface is provided with a coating comprising at least two layers in accordance with the method according to one of claims 1 to 8, characterized in that the fitting ring ( 17 . 30 ) has a base coating of a non-ferrous metal and at least one further hardstoffkörperfreie layer based on a nickel-phosphorus alloy.
  10. Biting ring according to claim 9, characterized in that the fitting ring is a solid ring ( 30 ).
  11. Biting ring according to claim 9, characterized in that the fitting ring ( 17 ) a carrier element ( 14 ), which on its surface with a groove ( 9 ) for receiving a saw tooth set ( 10 ) is provided.
DE102007056566.8A 2007-11-23 2007-11-23 Process for coating a clothing ring of an opening roller and a clothing ring for an opening roller Active DE102007056566B4 (en)

Priority Applications (1)

Application Number Priority Date Filing Date Title
DE102007056566.8A DE102007056566B4 (en) 2007-11-23 2007-11-23 Process for coating a clothing ring of an opening roller and a clothing ring for an opening roller

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007056566.8A DE102007056566B4 (en) 2007-11-23 2007-11-23 Process for coating a clothing ring of an opening roller and a clothing ring for an opening roller
CN 200810176322 CN101440494B (en) 2007-11-23 2008-11-14 Method for coating opening roller ring and ring used for opening roller

Publications (2)

Publication Number Publication Date
DE102007056566A1 true DE102007056566A1 (en) 2009-05-28
DE102007056566B4 DE102007056566B4 (en) 2018-11-15

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DE102010042862B4 (en) * 2010-10-25 2017-05-11 Battenfeld-Cincinnati Germany Gmbh Device for guiding and forming an extruded plastic strand

Citations (13)

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Publication number Priority date Publication date Assignee Title
CH567587A5 (en) * 1974-02-13 1975-10-15 Heberlein & Co Ag False-twisting spindle construction - with a layer of solderable material to secure guide unit to end section
US4358922A (en) * 1980-04-10 1982-11-16 Surface Technology, Inc. Metallic articles having dual layers of electroless metal coatings incorporating particulate matter
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US4358922A (en) * 1980-04-10 1982-11-16 Surface Technology, Inc. Metallic articles having dual layers of electroless metal coatings incorporating particulate matter
US4358923A (en) * 1980-04-10 1982-11-16 Surface Technology, Inc. Composite coatings for open-end machinery parts
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DE19947547A1 (en) * 1999-10-02 2001-04-05 Schlafhorst & Co W Spinning rotor has surfaces with a coating consisting of an intermediate layer which is free from hard material between two hard material-containing layers in contact with the fibers and thread
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