EP0728523B1 - Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle - Google Patents
Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle Download PDFInfo
- Publication number
- EP0728523B1 EP0728523B1 EP95120153A EP95120153A EP0728523B1 EP 0728523 B1 EP0728523 B1 EP 0728523B1 EP 95120153 A EP95120153 A EP 95120153A EP 95120153 A EP95120153 A EP 95120153A EP 0728523 B1 EP0728523 B1 EP 0728523B1
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- EP
- European Patent Office
- Prior art keywords
- roll
- profile
- hard material
- profile grooves
- 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.)
- Expired - Lifetime
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Classifications
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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
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- 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.]
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- 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
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- Y10T428/12—All metal or with adjacent metals
- Y10T428/12993—Surface feature [e.g., rough, mirror]
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- 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
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- 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
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- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
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- 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
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- 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
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- 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
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- 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
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- 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 Production of a roller, according to the preamble of the claim 14; it also relates to a material bed roller mill for crushing brittle regrinds, according to the preamble of claim 22.
- a roller of the prerequisite in the preamble of claim 1 is related to a Gutbettwalzenmühle described in DE-A-42 10 395.
- this known embodiment is a Chilled cast iron roll jacket exchangeable on a roll base attached, also on the outside or outer circumferential side of this roll shell profiling welding beads according to certain patterns in the Way can be applied that a profiled Wear protection armor with outwardly protruding hard material strips applied by build-up welding and recesses in between results in which regrind particles are pressed or pressed are and therefore an autogenous wear protection for form the surface of the jacket.
- a good intake capacity of the material to be shredded Good in that between the two rollers Grinding gap created.
- the invention is based on the object, a Roll according to the preamble of claim 1, a method for the production of a roller according to the generic term of claim 14 and a material bed roller mill there according to the preamble of claim 22 further develop that a particularly durable wear protection the roller surface and a reliable one Good collection and interaction of such Rolling even with relatively low consumption of hard material can be guaranteed.
- trained roller thus become the wells the profiled wear protection armor not only by the material height or material thickness of the the outside of the roll shell by hard overlay welding applied hard material strips determined, but on the one hand through the - radial - depth that from the outside of the peripheral jacket area profile grooves worked into the roller material and on the other hand, from the material height or thickness of the hard material strips. Because these hard material strips only on between the profile grooves or between the profile grooves existing or stopped, web-like Profile projections are welded on, the Roll design according to the invention compared to the known Rollers, in particular grinding rolls, thereby optimized that relatively little of the relatively expensive, highly wear-resistant hard material can be used got to.
- the profile grooves have a cross section with a Depths: width ratio of about 0.4 to 0.75 have, the profile depth - as already indicated - by the sum of the radial web height of the elaborated profile projections and the radial material height the hard material strip is formed. On this way, a particularly high stability of profiling created. It is also special advantageous if the material height of the hard material strips depending on which to load or processing material about 3 to 15 mm, preferably about 4 to 8 mm. Appropriately have the Profile grooves have a maximum cross-sectional width of about 30 to 40 mm.
- the hard material strips from a metal matrix with tungsten carbides embedded in it are produced, whose particle size is about 0.1 to 2 mm, preferably about 0.2 to 1.2 mm and their volume fraction about 50 to 80% of the total volume of the welded hard material strips is.
- a good bed roller mill for shredding brittle Regrind is characterized in that the wear protection armor each of the two grinding rollers installed there at least in the previously described invention Way is executed.
- rollers designed according to the invention in particular preferably as grinding rollers for comminution brittle regrind in a material bed roller mill can be used, although these rollers also in almost similarly in a roller press or the like. can be installed where there are often similar conditions or stresses can exist if a such a roller press for pressing any mineral goods, e.g. Coal, fertilizer or Like., Is used.
- any mineral goods e.g. Coal, fertilizer or Like., Is used.
- roller body 6 contains a roller body 6, whose annular outer peripheral area is a kind Has roll shell or a peripheral shell region 7, which is particularly illustrated in this Fig.2 is.
- the roller body 6 together with its peripheral jacket area 7 can according to the invention from a pressure-resistant and well weldable roller base material, for which any suitable material can be used such as. or preferably an 18 Ni-Cr-Mo-14.6 alloy or a similar iron base alloy.
- this circumferential jacket area 7 On the outside or outside circumference of this circumferential jacket area 7 is a profiled wear protection armor 8 formed, the protruding outwards Hard material strips 9 9 and existing in between Has depressions 10 in which regrind particles recorded and pressed into a layer, so to speak are, as indicated at 11. This pressed down Regrind layers 11 (in the depressions 10) thus form - in addition to the hard material strips 9 also an essential part of the wear protection armor 8th.
- this wear protection armor 8 is now produced that in the material or in the roller base material of the peripheral jacket area 7 of the On the outside, negative profiles, for example in shape of profile grooves or grooves 12 are incorporated, whereby web-like profile projections 13 remain formed between two adjacent profile grooves 12 are or limit these profile grooves. Only on these profile projections 13 are the hard material strips 9 in layers by build-up welding appropriate hard material welded.
- 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 shown in FIG. 2 is indicated by different thickness representations in the different illustrated hard material strips 9.
- 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.
- the grinding roller 2 a slightly wider in the axial direction provided edge strips 14 to provide, however - exactly as in the rest of the longitudinal section of the roller - basically also from a profile projection 13 welded hard material strip 9 there.
- This Edge strips 14 can, depending on the use and width of the whole roller an axial width of about 20 to 50 mm have.
- the profile grooves is also their cross-sectional shape of some importance as being special reliable holding of those in the wells 10 or profile grooves 12 pressed ground particles or ground material layer 11 is ensured.
- at least the profile grooves 12 one have approximately rectangular to trapezoidal cross-section.
- 2 is a rectangular one Cross section illustrated (with the light Width B and the total depth T).
- a trapezoidal Cross section of the profile grooves 12 is in Figure 3 in a Partial longitudinal sectional view illustrates, accordingly the trapezoidal cross section is radial tapered outwards (towards the outside), i.e. the narrower trapezoidal sides of the groove cross section about on the outside of the circumference of the jacket so that a kind of undercut groove shape for the Profile grooves 12 results in a particularly good Press firmly and permanently hold the ground particle layer 11 is guaranteed.
- Fig. 2 The profile of the wear protection armor profiles mentioned 8 can now be used for various purposes the roller 2 can be adjusted.
- Fig. 2 it is assumed that the profile grooves 12 and the web-shaped profile projections 13 so in the peripheral jacket area 7 are incorporated that they run in the circumferential direction of the roller 2.
- Fig.4 is on the other hand illustrates a way in which the Profile grooves 12 and the web-shaped profile projections 13 extend in the axial direction of the roller 2. Without it should be illustrated in more detail easily imagine that if necessary the profile grooves 12 and profile projections 13 also approximately helical or diagonally running on the outside of the peripheral jacket area 7 can be formed.
- Roller 2 further if the hard material strips 9th made of a metal matrix with tungsten carbides embedded in it or tungsten carbide particles - by hard surfacing - are manufactured in which the Particle size about 0.1 to 2 mm, preferably about 0.2 up to 1.2 mm and the volume fraction of these tungsten carbides about 50 to 80% of the total volume of the welded Hard material strips 9 is.
- These tungsten carbides can be in the form of tungsten carbides or tungsten pellets.
- the metal matrix can be used for the embedded tungsten carbides made of an alloy containing Ni, Cr, B, Si, an iron-based alloy with the elements C, Mn, Si, Cr and Mo or from an unalloyed filler metal consist.
- Roller 2 are several options based on of the two illustrated in cross section in Fig.1 Grinding rollers 2 are explained.
- roller body 6 in a manner known per se a roller body 6a and one separately on this Roller base body 6a interchangeably attached roller shell consists of the peripheral jacket area described above 7 7 forms.
- This one on its outside roller jacket provided with wear protection armor 8 can in turn be designed differently his.
- This roller shell can now be made according to the Representation in the left half (the right roller) in 1 in the manner of an interchangeable bandage 7a fastened in a known manner on the roller base body 6a be on the outside using the Fig. 2 explained wear protection armor 8 8 his.
- the drum-shaped roller jacket sort of divided into several jacket segments 7b which are exchangeable on the roller base body 6a are attached and then in turn on the outside the profile grooves explained in more detail with reference to FIG. 2 12 and profile projections 13 are formed.
- Hard material strips 9 can be used in the appropriate one Thickness or material height due to build-up welding the profile projections 13 applied in different ways become.
- One possibility for the type of surfacing and thus for the formation of wear protection armor 8 is that first the profile grooves 12th incorporated into the peripheral jacket area 7 of the roller body 6 and then on the outside of the next to the Profile grooves 12 stopped or between two adjacent profile grooves 12 remaining, web-like profile projections 13 the hard metal alloy welded to form the hard material strips 9 becomes.
- Prefabrication of the profile grooves 12 and profile projections 13 be expedient, build-up welding of the hard metal alloy (to form the hard material strips 9) using molds, which the profile projections 13 during the implementation of the surfacing are assigned so that the Hard material strips 9 with particularly great shape accuracy or dimensional accuracy on the outside of the profile projections 13 can be applied.
- the PTA plasma Transferred Arc
- the MAG metal active gas
- MIG metal inert gas
- autogenous welding and welding with cored wires are particularly suitable Welding process preferred.
- the profiled wear protection armor 8 8 can be an optimal width of the profile grooves 12 achieved with relatively narrow profile projections 13 be, the width of the profile grooves 12 many times depends on the grain size of the material to be crushed Feed good. This leads to a relatively small one Width of the profile projections 13 to a proportion low consumption of relatively expensive hard material for the hard material strips 9, without this - with attention an optimal ratio of Depth: Width (T: B) of the profile recesses 10 like explained above - a risk of breakage of the profile projections 13 (with the hard material strips applied to it 9) occur during high operational loads becomes.
- the but-how 5 illustrates - the profile grooves 12 and the web-like profile projections 13 (with their on it welded hard material strips 9) on the peripheral jacket area the one grinding roller opposite the profile grooves and profile projections 13 / hard material strips 9 on the peripheral jacket area of the other, opposite Grinding roller 2 'is offset from one another in this way are that - except for relatively narrow end sections - each with pressed-in good particles (cf.
- profile projections 13 preferably are approximately symmetrical to each other. This means so that the profile grooves 12 and profile projections of the two opposing grinding rollers 2, 2 'are mutually offset. In doing so, same axial roller width of both rollers the axial Edge strips 14 and 14 'appropriately one have different axial widths to each other and only directly opposite each other in the outermost edge area, as can be seen from Fig. 5.
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- 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)
Description
- Fig.1
- eine Querschnittsansicht zweier etwa in einer Gutbettwalzenmühle zusammengeordneter Walzen bzw. Mahlwalzen gemäß der Erfindung;
- Fig.2
- eine im vergrößerten Maßstab sowie teilweise im Längsschnitt dargestellte Perspektivansicht eines Walzenausschnittes im Umfangsmantelbereich;
- Fig.3
- eine Teil-Längsschnittansicht durch den Umfangsmantelbereich der Walze zur Erläuterung einer anderen Ausführungsform von Profilnuten;
- Fig.4
- eine vereinfachte Aufsicht auf eine weitere Ausführungsform der Walze;
- Fig.5
- eine teilweise (in Axialrichtung) geschnittene Teilansicht zweier in einer Gutbettwalzenmühle zusammenwirkenden Mahlwalzen.
Claims (24)
- Walze, insbesondere Mahlwalze für die Zerkleinerung spröder Mahlgüter in einer Gutbettwalzenmühle, in der zwei gegenläufig rotierend antreibbare Mahlwalzen (2) mit hohem Druck gegeneinander gedrückt werden, enthaltend einen Walzenkörper (6) mit einem Umfangsmantelbereich (7), dessen Außenseite eine profilierte Verschleißschutzpanzerung (8) mit nach außen vorstehenden Hartmaterialstreifen (9) und dazwischen vorhandenen, eingepreßte Gutteilchen enthaltenden Vertiefungen (10) aufweist,
gekennzeichnet durch folgende Ausbildung der Verschleißschutzpanzerung (8):a) im Material des Umfangsmantelbereiches (7) sind von der Außenseite her Negativprofilierungen etwa in Form von Profilnuten (12) ausgebildet, in denen die Gutteilchen festgepreßt sind;b) die Hartmaterialstreifen (9) sind nur auf die die Profilnuten (12) begrenzenden, stegartigen Profilvorsprüngen (13) aufgeschweißt. - Walze nach Anspruch 1, dadurch gekennzeichnet, daß die Profilvertiefungen (10) einen Querschnitt mit einem Tiefen : Breiten - Verhältnis (T : B) von etwa 0,4 bis 0,75 aufweisen, wobei die Tiefe (T) durch die Summe aus der radialen Steghöhe (h1) der ausgearbeiteten Profilvorsprünge (13) und der Materialhöhe (h2) der Hartmaterialstreifen (9) gebildet ist.
- Walze nach Anspruch 2, dadurch gekennzeichnet, daß die Materialhöhe (h2) der Hartmaterialstreifen (9) in Abhängigkeit von dem zu bearbeitenden Gut etwa 3 bis 15 mm, vorzugsweise etwa 4 bis 8 mm, beträgt.
- Walze nach Anspruch 2, dadurch gekennzeichnet, daß die Profilnuten (12) eine maximale Querschnittsbreite (B) von etwa 30 bis 40 mm besitzen.
- Walze nach Anspruch 2, dadurch gekennzeichnet, daß die Profilnuten (12) einen etwa rechteckigen bis etwa trapezförmigen Querschnitt besitzen, wobei der trapezförmige Querschnitt sich radial nach außen verjüngt.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß sich die Profilnuten (12) und die stegartigen Profilvorsprünge (13) in Achsrichtung der Walze (2) erstrecken.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß die Profilnuten (12) und die Profilvorsprünge (13) etwa schraubenlinienförmig oder in Umfangsrichtung der Walze (2) verlaufen.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß die Hartmaterialstreifen (9) aus einer Metallmatrix mit darin eingelagerten Wolframkarbiden hergestellt sind, deren Teilchengröße etwa 0,1 bis 2 mm, vorzugsweise etwa 0,2 bis 1,2 mm und deren Volumenanteil etwa 50 bis 80 % des Gesamtvolumens der aufgeschweißten Materialstreifen beträgt.
- Walze nach Anspruch 8, dadurch gekennzeichnet, daß die Metallmatrix für die eingelagerten Wolframkarbide aus einer Ni, Cr, B, Si enthaltenden Legierung, einer Eisenbasis-Legierung mit den Elementen C, Mn, Si, Cr und Mo oder aus einem unlegierten Schweißzusatzwerkstoff besteht.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß der Walzenkörper (6) mitsamt dem Umfangsmantelbereich (7) aus einem druckfesten und gut schweißbaren Walzengrundwerkstoff hergestellt ist, vorzugsweise aus einer 18 Ni-Cr-Mo-14.6-Legierung.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß der Walzenkörper (6) mitsamt seinem Umfangsmantelbereich (7) in Form einer Vollwalze aus Schmiedestahl oder Guß hergestellt ist.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß der Walzenkörper (6) aus einem Walzengrundkörper (6a) und einer den Umfangsmantelbereich bildenden, auswechselbar auf diesem Walzengrundkörper befestigten Bandage (7a) aufgebaut ist, deren Außenseite mit den Profilnuten (12) und Profilvorsprüngen (13) mit den Hartmaterialstreifen (9) versehen ist.
- Walze nach Anspruch 1, dadurch gekennzeichnet, daß der Walzenkörper (6) aus einem Walzengrundkörper (6a) und einer Anzahl von einen geschlossenen Umfangsmantelbereich bildenden, auf dem Walzengrundkörper auswechselbar befestigten Mantelsegmenten (7b) aufgebaut ist, auf deren Außenseite die Profilnuten (12) und Profilvorsprünge (13) mit den Hartmaterialstreifen (9) ausgebildet sind.
- Verfahren zur Herstellung einer Walze, insbesondere einer Mahlwalze für die Zerkleinerung spröder Mahlgüter in einer Gutbettwalzenmühle, in der zwei gegenläufig rotierend antreibbare Mahlwalzen mit hohem Druck gegeneinander gedrückt werden, wobei auf der Außenseite des Umfangsmantelbereiches eines Walzenkörpers eine profilierte Verschleißschutzpanzerung mit nach außen vorstehenden Hartmaterialstreifen und dazwischen vorhandenen, eingepreßte Gutteilchen enthaltenden Vertiefungen ausgebildet sind,
gekennzeichnet durch folgende Verfahrensschritte zur Ausbildung der Verschleißschutzpanzerung (8):a) in das Material des Umfangsmantelbereichs (7) werden von dessen Außenseite her Negativprofilierungen etwa in Form von Profilnuten (12) eingearbeitet, in denen Teilchen des zu bearbeitenden Gutes aufgenommen und festgepreßt werden;b) die Hartmaterialstreifen (9) werden nur auf die Profilnuten (12) begrenzende Profilvorsprünge (13) aufgeschweißt. - Verfahren nach Anspruch 14, dadurch gekennzeichnet, daß die Profilnuten (12) mit einem Querschnitt hergestellt werden, dessen Tiefe : Breite - Verhältnis etwa 0,4 bis 0,75 beträgt, wobei die Gesamtprofiltiefe (T) durch die Summe aus der Steghöhe (h1) der Profilvorsprünge (13) und der Materialhöhe (h2) der Hartmaterialstreifen (9) gebildet wird.
- Verfahren nach Anspruch 15, dadurch gekennzeichnet, daß die Hartmaterialstreifen (9) aus einer hochverschleißfesten Hartmetall-Legierung hergestellt und mit einer von der Beschaffenheit des zu verarbeitenden Gutes abhängigen Materialhöhe (h2) von etwa 3 bis 15 mm, vorzugsweise etwa 4 bis 8 mm, auf die Profilvorsprünge (13) durch Auftragsschweißung aufgebracht werden.
- Verfahren nach Anspruch 16, dadurch gekennzeichnet, daß für die Hartmaterialstreifen (9) eine Hartmetall-Legierung verwendet wird, die eine Metallmatrix mit darin eingelagerten Wolframkarbiden in einer Teilchengröße von etwa 0,1 bis 2 mm, vorzugsweise von etwa 0,2 bis 1,2 mm, sowie mit einem Volumenanteil von etwa 50 bis 80 % des Gesamtvolumens der Hartmaterialstreifen enthält.
- Verfahren nach Anspruch 17, dadurch gekennzeichnet, daß zunächst die Profilnuten (12) in den Umfangsmantelbereich (7) des Walzenkörpers (6) eingearbeitet und danach auf der Außenseite der zwischen je zwei benachbarten Profilnuten verbliebenen, stegartigen Profilvorsprünge (13) die Hartmetall-Legierung aufgeschweißt wird.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß die Profilnuten (12) und die stegartigen Profilvorsprünge (13) beim Gießen des Walzenkörpers (6) oder durch Einfräsungen in das Material des Umfangsmantelbereiches (7) hergestellt werden.
- Verfahren nach Anspruch 18, dadurch gekennzeichnet, daß das Auftragsschweißen der Hartmetall-Legierung unter Verwendung von formenden Kokillen durchgeführt wird, die den Profilvorsprüngen (13) während des Auftragsschweißens zugeordnet werden.
- Verfahren nach Anspruch 17, dadurch gekennzeichnet, daß zunächst die Hartmetall-Legierung nach einem entsprechend den einzuarbeitenden Profilnuten (12) vorgegebenen Muster auf der Außenseite des Umfangsmantelbereiches (7) in Form von Hartmaterialstreifen (9) aufgeschweißt und danach die Profilnuten (12) im Bereich zwischen den aufgeschweißten Streifen ausgearbeitet, vorzugsweise ausgefräst oder ausgedreht werden.
- Gutbettwalzenmühle für die Zerkleinerung spröder Mahlgüter, mit zwei gegenläufig rotierend antreibbaren Mahlwalzen (2, 2'), die mit hohem Druck gegeneinandergedrückt sind und je einen Walzenkörper mit einem Umfangsmantelbereich enthalten, dessen Außenseite eine profilierte Verschleißschutzpanzerung (8) mit nach außen vorstehenden Hartmaterialstreifen (9) und dazwischen vorhandenen, eingepreßte Gutteilchen enthaltenden Vertiefungen (12) aufweist, dadurch gekennzeichnet, daß die Verschleißschutzpanzerung (8) jeder Mahlwalze (2, 2') nach wenigstens einem der Ansprüche 1 bis 21 ausgeführt ist.
- Gutbettwalzenmühle nach Anspruch 22, dadurch gekennzeichnet, daß die Profilnuten (12) und die stegartigen Profilvorsprünge (13) am Umfangsmantelbereich der einen Mahlwalze (2) gegenüber denen am Umfangsmantelbereich der anderen Mahlwalze (2') derart versetzt zueinander angebracht sind, daß sich - bis auf kurze Endabschnitte - jeweils mit eingepreßten Gutteilchen (11) gefüllte Profilnuten (12) und mit Hartmaterialstreifen (9) versehene Profilvorsprünge - vorzugsweise symmetrisch zueinander - gegenüberliegen.
- Gutbettwalzenmühle nach Anspruch 22, dadurch gekennzeichnet, daß die beiden Mahlwalzen (2) mit gleichartig angebrachten Profilnuten (12) und Profilvorsprüngen (13) mit darauf aufgeschweißten Hartmaterialstreifen (9) ausgeführt sind, so daß Profilnuten (12) und Profilvorsprünge (13) mit ihren Hartmaterialstreifen (9) beider Walzen sich jeweils genau gegenüberliegen.
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 EP0728523A1 (de) | 1996-08-28 |
EP0728523B1 true EP0728523B1 (de) | 2000-03-08 |
Family
ID=7755018
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP95120153A Expired - Lifetime EP0728523B1 (de) | 1995-02-24 | 1995-12-20 | Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle |
Country Status (8)
Country | Link |
---|---|
US (1) | US5902685A (de) |
EP (1) | EP0728523B1 (de) |
AU (1) | AU690788B2 (de) |
BR (1) | BR9600808A (de) |
CA (1) | CA2166859A1 (de) |
DE (2) | DE19506600A1 (de) |
ES (1) | ES2143582T3 (de) |
ZA (1) | ZA96867B (de) |
Cited By (1)
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DE102004025175A1 (de) * | 2004-05-21 | 2005-12-22 | Kerr-Mcgee Pigments Gmbh | Gutbett-Walzenmühle |
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DE19646030A1 (de) * | 1996-11-08 | 1998-05-14 | Deutz Ag | Verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruckwalzenpressen zur Druckzerkleinerung körnigen Gutes |
US6971174B2 (en) * | 2003-01-08 | 2005-12-06 | Alcoa Inc. | Method of manufacturing a caster roll |
DE10335115A1 (de) * | 2003-07-31 | 2005-02-24 | Polysius Ag | Mahlwalze |
SE526184C2 (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 |
EP2239058B1 (de) | 2009-04-01 | 2017-05-10 | MEC Holding GmbH | Verschleissfeste Rolle und Verfahren für deren Herstellung |
DE102009050636B4 (de) | 2009-10-24 | 2011-07-07 | Siempelkamp Giesserei GmbH, 47803 | Mahlwalze und Ringbandage für eine Mahlwalze |
CN103108699B (zh) * | 2010-07-26 | 2016-02-03 | Ing商事株式会社 | 立式轧辊 |
DE102011104854B4 (de) * | 2011-06-21 | 2015-06-11 | Khd Humboldt Wedag Gmbh | Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern |
CN102302964B (zh) * | 2011-07-21 | 2013-05-22 | 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 |
US9375718B2 (en) | 2011-10-18 | 2016-06-28 | Diamond Power International, Inc. | Shaft-to-roller attachment for clinker grinder roller |
DE102012102199A1 (de) * | 2012-03-15 | 2013-09-19 | Maschinenfabrik Köppern GmbH & Co KG | Presswalze |
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 |
DE102013104098A1 (de) * | 2013-04-23 | 2014-10-23 | Thyssenkrupp Industrial Solutions Ag | Vorrichtung zur Zerkleinerung von abrasiven Materialien |
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US10857539B2 (en) * | 2018-10-17 | 2020-12-08 | General Mills Inc. | Apparatus and method for variable sizing of particulates |
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-
1995
- 1995-02-24 DE DE19506600A patent/DE19506600A1/de not_active Withdrawn
- 1995-12-20 DE DE59507959T patent/DE59507959D1/de not_active Expired - Fee Related
- 1995-12-20 EP EP95120153A patent/EP0728523B1/de not_active Expired - Lifetime
- 1995-12-20 ES ES95120153T patent/ES2143582T3/es not_active Expired - Lifetime
-
1996
- 1996-01-09 CA CA002166859A patent/CA2166859A1/en not_active Abandoned
- 1996-01-11 US US08/584,346 patent/US5902685A/en not_active Expired - Fee Related
- 1996-01-30 AU AU42222/96A patent/AU690788B2/en not_active Ceased
- 1996-02-05 ZA ZA96867A patent/ZA96867B/xx unknown
- 1996-02-23 BR BR9600808A patent/BR9600808A/pt not_active IP Right Cessation
Cited By (2)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102004025175A1 (de) * | 2004-05-21 | 2005-12-22 | Kerr-Mcgee Pigments Gmbh | Gutbett-Walzenmühle |
DE102004025175B4 (de) * | 2004-05-21 | 2006-07-06 | Kerr-Mcgee Pigments Gmbh | Gutbett-Walzenmühle |
Also Published As
Publication number | Publication date |
---|---|
CA2166859A1 (en) | 1996-08-25 |
US5902685A (en) | 1999-05-11 |
ES2143582T3 (es) | 2000-05-16 |
DE59507959D1 (de) | 2000-04-13 |
BR9600808A (pt) | 1997-12-23 |
AU4222296A (en) | 1996-09-05 |
ZA96867B (en) | 1996-09-13 |
EP0728523A1 (de) | 1996-08-28 |
AU690788B2 (en) | 1998-04-30 |
DE19506600A1 (de) | 1996-08-29 |
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