EP0728523A1 - Cylindre, procédé pour la fabrication d'un cylindre et broyeur à cylindres à lit de matière - Google Patents

Cylindre, procédé pour la fabrication d'un cylindre et broyeur à cylindres à lit de matière Download PDF

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Publication number
EP0728523A1
EP0728523A1 EP95120153A EP95120153A EP0728523A1 EP 0728523 A1 EP0728523 A1 EP 0728523A1 EP 95120153 A EP95120153 A EP 95120153A EP 95120153 A EP95120153 A EP 95120153A EP 0728523 A1 EP0728523 A1 EP 0728523A1
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EP
European Patent Office
Prior art keywords
roller
profile
hard material
material strips
approximately
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
EP95120153A
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German (de)
English (en)
Other versions
EP0728523B1 (fr
Inventor
Heinz Dipl.-Ing. Schröder
Oswald Dipl.-Ing. Haberhauer
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
Krupp Polysius AG
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Publication date
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Publication of EP0728523A1 publication Critical patent/EP0728523A1/fr
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Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C4/00—Crushing or disintegrating by roller mills
    • B02C4/28—Details
    • B02C4/30—Shape or construction of rollers
    • B02C4/305—Wear resistant rollers
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10S—TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10S428/00—Stock material or miscellaneous articles
    • Y10S428/906—Roll or coil
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components
    • Y10T29/49549—Work contacting surface element assembled to core
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/49547—Assembling preformed components
    • Y10T29/49549—Work contacting surface element assembled to core
    • Y10T29/49554—Work contacting surface having annular axial sections
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T29/00—Metal working
    • Y10T29/49—Method of mechanical manufacture
    • Y10T29/49544—Roller making
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12389—All metal or with adjacent metals having variation in thickness
    • Y10T428/12396—Discontinuous surface component
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/12—All metal or with adjacent metals
    • Y10T428/12993—Surface feature [e.g., rough, mirror]
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24479—Structurally defined web or sheet [e.g., overall dimension, etc.] including variation in thickness
    • Y10T428/2457—Parallel ribs and/or grooves
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/24—Structurally defined web or sheet [e.g., overall dimension, etc.]
    • Y10T428/24942—Structurally defined web or sheet [e.g., overall dimension, etc.] including components having same physical characteristic in differing degree
    • Y10T428/24983—Hardness
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/25—Web or sheet containing structurally defined element or component and including a second component containing structurally defined particles
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
    • Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
    • Y10T428/00—Stock material or miscellaneous articles
    • Y10T428/29—Coated or structually defined flake, particle, cell, strand, strand portion, rod, filament, macroscopic fiber or mass thereof
    • Y10T428/2913—Rod, strand, filament or fiber
    • Y10T428/2973—Particular cross section
    • Y10T428/2978—Surface characteristic

Definitions

  • the invention relates to a roller according to the preamble of claim 1 and a method for producing a roller according to the preamble of claim 14; it also relates to a material bed roller mill for comminuting brittle regrind, according to the preamble of claim 22.
  • a roller of the type required in the preamble of claim 1 is described, for example, in connection with a material bed roller mill in DE-A-42 10 395.
  • a chilled cast iron roll jacket is exchangeably attached to a roll base body, profiling weld beads can also be applied to the outside or outer circumferential side of this roll jacket in accordance with certain patterns in such a way that a profiled wear protection armor with outwardly protruding, by build-up welding applied hard material strips and recesses between them, in which regrind particles are firmly or pressed in and thus form an autogenous wear protection for the surface of the jacket.
  • the invention is based on the object of a roller according to the preamble of claim 1, a method for producing a roller according to the preamble of claim 14 and a material bed roller mill according to the preamble of claim 22 to develop further that a particularly durable wear protection of the roller surface and a reliable good pull-in capacity and interaction of such rollers can be guaranteed even with a relatively low consumption of hard material.
  • this wear protection armor is formed by the fact that in the material of the peripheral jacket area (or the specially designed roll jacket) negative profiles are formed from the outside, for example in the form of profile grooves or grooves, in which the good particles - in particular during the comminution process in a good bed roller mill - pressed tight are, and that the hard material strips are only welded onto the web-like profile projections that delimit the profile grooves.
  • the depressions of the profiled wear protection armor are thus determined not only by the material height or material thickness of the hard material strips applied to the outside of the roller shell by hard surfacing, but on the one hand by the - radial - depth of the from the outside of the peripheral shell area into the Rolled-in profile grooves and on the other hand the material height or thickness of the hard material strips. Since these hard material strips are only welded onto the web-like profile projections which delimit the profile grooves or which exist or remain between the profile grooves, the roller design according to the invention can be optimized compared to the known rollers, in particular grinding rollers, in that relatively little of the relatively expensive, highly wear-resistant hard material must be used.
  • the good particles pressed into the profile grooves (which largely or almost completely fill these profile grooves) in the areas between the hard material strips provide sufficient, autogenous wear protection, so that the outside of the peripheral jacket area or the roll jacket overall is particularly good , permanent wear protection for the roller surface and, at the same time, can also guarantee a very reliable good pull-in capacity of the rollers formed in this way.
  • the profile grooves have a cross section with a depth: width ratio of approximately 0.4 to 0.75 have, the profile depth - as already indicated - is formed by the sum of the radial web height of the elaborated profile projections and the radial material height of the hard material strips. In this way, a particularly high stability of the profiling is created. It is also particularly advantageous if the material height of the hard material strips is approximately 3 to 15 mm, preferably approximately 4 to 8 mm, depending on the material to be processed or processed.
  • the profile grooves expediently have a maximum cross-sectional width of approximately 30 to 40 mm.
  • the hard material strips are produced from a metal matrix with tungsten carbides (or tungsten carbide particles) embedded therein, the particle size of which is approximately 0.1 to 2 mm, preferably approximately 0.2 to 1.2 mm and their volume fraction is about 50 to 80% of the total volume of the welded hard material strips.
  • a material bed roller mill for the comminution of brittle regrinds, according to the preamble of claim 22, is characterized in that the wear protection armor of each of the two grinding rollers installed there is designed at least in the manner according to the invention described above.
  • rollers designed according to the invention are used in a particularly preferred manner as grinding rollers for the comminution of brittle regrind in a material bed roller mill, although these rollers can also be installed in a roller press or the like in an almost similar manner, where in many cases Similar conditions or stresses may be present if such a roller press is used, for example, to press any mineral goods, such as Coal, synthetic fertilizer or the like. Is used.
  • FIG. 1 The general structure of a material bed roller mill known per se will first be explained with reference to FIG.
  • two counter-rotating rollers designed as grinding rollers 2 are arranged in opposite directions, corresponding to the arrows 1, which are at least partially elastically pressed against one another with high pressure (as indicated by arrows 3).
  • Both grinding rollers 2 have the same design Construction according to the present invention.
  • a grinding gap 4 is formed, which is passed through by the material to be ground (dashed arrows 5) during the known and therefore not explained in detail material bed grinding.
  • the left grinding roller 2 is mounted as a fixed roller in FIG. 1, while the right roller is a loose roller which can be pressed elastically or resiliently against the fixed roller and is relatively displaceable (as is known per se).
  • the illustrated grinding roller 2 is assumed to contain a roller body 6, the annular outer peripheral region of which has a type of roller shell or a peripheral shell region 7, which is illustrated in particular in this FIG.
  • the roller body 6 together with its peripheral jacket region 7 can be made from a pressure-resistant and easily weldable roller base material, for which any suitable material can be used, such as e.g. or preferably an 18 Ni-Cr-Mo-14.6 alloy or a similar iron base alloy.
  • a profiled wear protection armor 8 is formed on the outer or outer circumferential side of this circumferential casing area 7, which has outwardly protruding hard material strips 9 and recesses 10 therebetween, in which regrind particles are accommodated and, as it were, pressed in one layer, as indicated at 11. This pressed down Layers of regrind 11 (in the depressions 10) thus - in addition to the hard material strips 9 - also form an essential part of the wear protection armor 8.
  • this wear protection armor 8 is now produced by incorporating negative profiles, for example in the form of profile grooves or grooves 12, into the material or in the roller base material of the peripheral jacket region 7, whereby web-like profile projections 13 remain between two adjacent ones Profile grooves 12 are formed or limit these profile grooves. Only on these profile projections 13 are the hard material strips 9 welded in a layer-like manner by hard welding of the corresponding hard material.
  • the groove-shaped depressions 10 (which include the profile grooves 12) have a clear cross section with a depth: width ratio (T: B) of approximately 0.4 to 0.75, the depth (T) is formed by the sum of the radial web height h 1 of the elaborated profile projections 13 and the radial material height h 2 of the hard material strips 9.
  • the material height h 2 of the hard material strips 9 is expediently chosen depending on the nature (in particular hardness and abrasiveness) of the ground material to be processed or comminuted and is approximately 3 to 15 mm, preferably approximately 4 to 8 mm, as is illustrated in FIG. 2 by different thickness representations for the different ones Hard material strip 9 is indicated.
  • the profile grooves 12 and thus the depressions 10 can in turn have a maximum cross-sectional width B of approximately 30 to 40 mm, depending on the material to be ground.
  • At least one axial end 2a of the grinding roller 2 with a marginal strip 14 which is kept somewhat wider in the axial direction, but which - just like in the rest of the longitudinal section of the roller - basically also consists of there is a profile projection 13 with welded hard material strips 9.
  • this edge strip 14 can have an axial width of approximately 20 to 50 mm.
  • the profile grooves 12 In addition to the appropriately selected cross-sectional width B of the profile grooves, their cross-sectional shape is also of a certain importance insofar as this ensures particularly reliable retention of the regrind particles or regrind particle layer 11 which are pressed into the depressions 10 or profile grooves 12.
  • at least the profile grooves 12 should have an approximately rectangular to trapezoidal cross section. 2
  • a rectangular cross section is illustrated (with the clear one Width B and the total depth T).
  • a trapezoidal cross section of the profile grooves 12 is illustrated in FIG.
  • the trapezoidal cross section correspondingly tapering radially outward (towards the outside), that is to say the narrower trapezoidal sides of the groove cross section lie approximately on the outside of the circumference of the casing, so that there is, so to speak, an undercut groove shape for the profile grooves 12, thereby ensuring particularly good pressing and permanent holding of the ground material layer 11.
  • the profile of the wear protection armor 8 can now be adapted to various purposes of the roller 2.
  • the profile grooves 12 and the web-shaped profile projections 13 are incorporated into the peripheral jacket region 7 such that they run in the peripheral direction of the roller 2.
  • FIG. 4 on the other hand, a possibility is illustrated according to which the profile grooves 12 and the web-shaped profile projections 13 extend in the axial direction of the roller 2. Without it having to be illustrated in more detail, it can easily be imagined that, if necessary, the profile grooves 12 and profile projections 13 can also be approximately helical or diagonal on the outside of the peripheral jacket region 7.
  • the hard material strips 9 are produced from a metal matrix with tungsten carbides or tungsten carbide particles embedded therein - by hard overlay welding - in which the particle size is approximately 0.1 to 2 mm, preferably approximately 0 , 2nd up to 1.2 mm and the volume fraction of these tungsten carbides is approximately 50 to 80% of the total volume of the welded hard material strips 9.
  • These tungsten carbides can be provided in the form of tungsten carbides or tungsten pellets.
  • the metal matrix for the embedded tungsten carbides can expediently consist of an alloy containing Ni, Cr, B, Si, an iron-based alloy with the elements C, Mn, Si, Cr and Mo or of an unalloyed welding filler material.
  • the left-hand grinding roller 2 in FIG. 1 - as already indicated with reference to FIG. 2 - has a roller body 6, which is made with its only indicated - approximately cylindrical - circumferential surface area 7 in the form of a solid roller made of forged steel or optionally also of cast iron.
  • roller body 6 consists, in a manner known per se, of a roller base body 6a and a roller jacket which is separately and interchangeably attached to this roller base body 6a and which forms the peripheral jacket region 7 described above.
  • This roller jacket provided on its outside with the wear protection armor 8 can in turn be designed differently.
  • This roller jacket can now, as shown in the left half (the right roller) in FIG. 1, in the manner of an interchangeable bandage 7a be fastened in a known manner on the roller base body 6a and thereby be provided on the outside with the wear protection armor 8 explained with reference to FIG. According to the representation in the right half (the right roller) in FIG.
  • the bandage-shaped roller shell is, as it were, divided into a plurality of shell segments 7b, which are interchangeably fastened on the roller base body 6a, and on the outside of which the profile grooves 12 explained in more detail with reference to FIG. 2 and profile projections 13 are formed.
  • the or each grinding roller 2 is produced in several process steps when its wear-resistant armor 8 is formed, by incorporating the above-mentioned profile grooves 12 into the material of the peripheral jacket region 7, in which particles of the material to be processed or comminuted are taken up and pressed and by welding the hard material strips 9 only onto the profile projections 13 which delimit the profile grooves 12 or the profile projections 13 remaining between these profile grooves 12.
  • a depth: width ratio (T: B) of about 0.4 to 0.75 for the clear cross section of the depressions 10 should expediently be maintained, as is explained in more detail above with reference to FIG.
  • the profile grooves 12 are first worked into the circumferential surface area 7 of the roller body 6 and then on the outside of the profile grooves 12 which have remained or between two adjacent profile grooves 12 remaining, web-like profile projections 13 the hard metal alloy is welded to form the hard material strips 9.
  • the profile grooves 12 and the web-like profile projections 13 can be produced, for example, either when the roller body 6 is cast or after the full roller body 6 has been produced by appropriate milling or turning into the material of the peripheral jacket region 7.
  • the PTA Pulsma Transferred Arc
  • the MAG Metal Active Gas
  • MIG Metal Inert Gas
  • the autogenous welding as well welding with cored wire is preferred as a particularly suitable welding method.
  • an optimal width of the profile grooves 12 can be achieved with relatively narrow profile projections 13, the width of the profile grooves 12 often being dependent on the grain size of the feed material to be comminuted.
  • a relatively small width of the profile projections 13 leads to a relatively low consumption of relatively expensive hard material for the hard material strips 9, without this - if an optimal ratio of depth: width (T: B) of the profile recesses 10 as explained above - a risk of breakage the profile projections 13 (with the hard material strips applied thereon 9) will occur during high operational loads.
  • each of the two grinding rollers 2 installed therein can be designed with wear protection armor according to at least one of the previously described embodiments.
  • an embodiment of the material bed roller mill is particularly preferred in which the two grinding rollers 2 - apart from the respective dimensions of the profile grooves and profile projections - are constructed and manufactured in principle in the same way, as has been explained in particular with reference to FIGS but - as illustrated with reference to FIG. 5 - the profile grooves 12 and the web-like profile projections 13 (with their hard material strips 9 welded thereon) on the circumferential casing area of one grinding roller offset in relation to the profile grooves and profile projections 13 / hard material strips 9 on the circumferential casing area of the other, opposing grinding roller 2 'in such a way are attached to each other that - except for relatively narrow end sections - Profile grooves 12 filled with pressed-in good particles (cf.
  • profile projections 13 provided with hard material strips 9 are preferably approximately symmetrically opposite one another. This means that the profile grooves 12 and profile projections of the two opposing grinding rollers 2, 2 'are offset from one another.
  • the axial edge strips 14 and 14 ' will expediently have a correspondingly different axial width from one another and only lie directly opposite one another in the outermost edge region, as can be seen from FIG. 5.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)
EP95120153A 1995-02-24 1995-12-20 Cylindre, procédé pour la fabrication d'un cylindre et broyeur à cylindres à lit de matière Expired - Lifetime EP0728523B1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19506600A DE19506600A1 (de) 1995-02-24 1995-02-24 Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle
DE19506600 1995-02-24

Publications (2)

Publication Number Publication Date
EP0728523A1 true EP0728523A1 (fr) 1996-08-28
EP0728523B1 EP0728523B1 (fr) 2000-03-08

Family

ID=7755018

Family Applications (1)

Application Number Title Priority Date Filing Date
EP95120153A Expired - Lifetime EP0728523B1 (fr) 1995-02-24 1995-12-20 Cylindre, procédé pour la fabrication d'un cylindre et broyeur à cylindres à lit de matière

Country Status (8)

Country Link
US (1) US5902685A (fr)
EP (1) EP0728523B1 (fr)
AU (1) AU690788B2 (fr)
BR (1) BR9600808A (fr)
CA (1) CA2166859A1 (fr)
DE (2) DE19506600A1 (fr)
ES (1) ES2143582T3 (fr)
ZA (1) ZA96867B (fr)

Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0846496A1 (fr) * 1996-11-08 1998-06-10 DEUTZ Aktiengesellschaft Revêtement résistant à l'usure pour cylindres de broyeurs à cylindres à haute pression pour le broyage sous pression de matériau granulaire
DE10335115A1 (de) * 2003-07-31 2005-02-24 Polysius Ag Mahlwalze
CN102302964A (zh) * 2011-07-21 2012-01-04 吉林大学 一种具有仿生耦合耐磨表层的水泥磨辊及其制作方法
RU2524536C1 (ru) * 2013-03-11 2014-07-27 Федеральное государственное бюджетное образовательное учреждение высшего профессионального образования "Сибирский государственный индустриальный университет" Способ дробления в валковой дробилке
EP2239058B1 (fr) 2009-04-01 2017-05-10 MEC Holding GmbH Cylindre à revêtement résistant à l'usure et procédé pour sa fabrication

Families Citing this family (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6971174B2 (en) * 2003-01-08 2005-12-06 Alcoa Inc. Method of manufacturing a caster roll
DE102004025175B4 (de) * 2004-05-21 2006-07-06 Kerr-Mcgee Pigments Gmbh Gutbett-Walzenmühle
SE0402417L (sv) * 2004-10-07 2005-07-19 Goesta Larssons Mek Verkst Ab Rivvals med spår för rivverktyg
US20100151268A1 (en) 2008-12-11 2010-06-17 Flsmidth A/S Wear-resistant hard surfacing method and article
DE102009050636B4 (de) 2009-10-24 2011-07-07 Siempelkamp Giesserei GmbH, 47803 Mahlwalze und Ringbandage für eine Mahlwalze
EP2599551A4 (fr) * 2010-07-26 2017-05-31 Ing Shoji Co., Ltd. Cylindre de mélangeur vertical
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AU690788B2 (en) 1998-04-30
BR9600808A (pt) 1997-12-23
ZA96867B (en) 1996-09-13
EP0728523B1 (fr) 2000-03-08
CA2166859A1 (fr) 1996-08-25
DE19506600A1 (de) 1996-08-29
ES2143582T3 (es) 2000-05-16
US5902685A (en) 1999-05-11
AU4222296A (en) 1996-09-05
DE59507959D1 (de) 2000-04-13

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