EP3088084B1 - Corps dur pour un blindage en reseau pour une presse a rouleaux, son procede de production, et rouleau pour une presse a rouleaux - Google Patents

Corps dur pour un blindage en reseau pour une presse a rouleaux, son procede de production, et rouleau pour une presse a rouleaux Download PDF

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Publication number
EP3088084B1
EP3088084B1 EP16167477.5A EP16167477A EP3088084B1 EP 3088084 B1 EP3088084 B1 EP 3088084B1 EP 16167477 A EP16167477 A EP 16167477A EP 3088084 B1 EP3088084 B1 EP 3088084B1
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EP
European Patent Office
Prior art keywords
roller
hard body
shell
hard
roller press
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.)
Active
Application number
EP16167477.5A
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German (de)
English (en)
Other versions
EP3088084A1 (fr
Inventor
Meinhard Frangenberg
Karsten Ebenhan
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.)
Takraf GmbH
Original Assignee
MAN Takraf Fordertechnik GmbH
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Publication of EP3088084A1 publication Critical patent/EP3088084A1/fr
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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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C2210/00—Codes relating to different types of disintegrating devices
    • B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like
    • 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
    • B02C4/02—Crushing or disintegrating by roller mills with two or more rollers

Definitions

  • the invention relates to a hard body for the grid armor of the role of a roller press, a method for its production and a roller for a roller press.
  • a roller press also called a good-bed roller mill, has two rollers between which a material bed is crushed by high pressure.
  • the high pressure ensures a high wear of the rollers.
  • various solutions have been proposed.
  • a surface profiling of the rollers has been recognized as being wear-reducing, whereby the profiling can be applied in various ways.
  • the profiling can be applied in various ways.
  • the EP 0 443 195 A1 proposed to apply nubs on the roll surface by welding.
  • a bandage is proposed for a roller press made of a chromium-containing iron alloy.
  • the bandage is designed to improve the wear protection profiled on the outside.
  • a complex process step In addition to the high cost of the alloy and the application of the bandage is a complex process step, resulting in high total cost.
  • the DE 41 32 474 A1 proposes to store in the roller surface wear-resistant pieces of material that are harder than the surrounding roll material.
  • the material pieces are preferably plate-shaped or pin-shaped, connected by gluing to the roller and made of hard metal.
  • the disadvantage is the cost of the material pieces of hard metal high and also carbide is too wear resistant and brittle for various applications.
  • a wear-resistant roller and its manufacture contains a plurality of wear-resistant surface elements, preferably bolts, wherein the free bolt ends project radially from the surface of the roller.
  • the spaces between the bolts are filled with one, the bolt against softer, matrix material, on which in turn regrind is filled.
  • the bolts are welded to the roller and consist at least partially of a high strength iron alloy.
  • this object is achieved by a wear-resistant hard body according to claim 1, a roller for a roller press according to claim 11, by a method for producing a hard body according to claim 15 and by the use according to claim 17.
  • Preferred developments of the invention are the subject of dependent claims.
  • the wear-resistant hard body according to the invention consists at least partially of a high-strength iron-based alloy (IFW) and has a shell or sleeve of another material on the outside.
  • Rolls for roller presses usually have a bandage, often referred to as a roll body into which the hard bodies are introduced as a grid armor.
  • the hard body outside has a three-sided closed shell.
  • the hard body hardly needs to be machined to ensure the fit to the hole in the bandage, since the shell already has this fit. This allows a defined fit between the bandage and the hard body with sheath.
  • the hard bodies according to the invention with sheath or sleeve are also referred to as Bimetallstuds.
  • the wear-resistant hard bodies have a circular cylindrical shape.
  • the closed end face of the shell which in the installed state to the center of the roll, preferably rounded.
  • a cracking of the bandage due to sharp edges is prevented.
  • the rounding is particularly preferably in a spherical shape.
  • a high-strength iron-based alloy is understood to mean a high-strength iron alloy which consists of a material of the composition of the formula Fe a E 1 b E 2 c E 3 d E 4 e .
  • E1 is one or more elements of the group Cr, V, Mn, Co and Ni
  • E2 is one or more elements of the group Mo, Nb, Zr, Y, Hf, Ti, Ta and W
  • E3 is one or more elements of the group Sn , Al, Ga
  • the microstructure of moldings produced from the alloy consists of at least 30-90% by volume of at least one microcrystalline one austenitic cubic face-centered (fcc) phase further containing at least one further microcrystalline phase.
  • the alloy according to the invention is in DE 10 2006 024 358 described.
  • the hard bodies are produced by casting into the casing or sleeve of another material, preferably copper, copper alloys or steel.
  • Particularly advantageous material properties can be achieved if the production of the hard body by means of in the DE 10 2010 062 011 B3 described method takes place. This states that after mixing the alloying elements and melting, they are poured into a mold that allows a cooling rate of at least 10 K / s. Subsequently, the material is tempered at least twice immediately after each other, at tempering temperatures between 500 ° C and 600 ° C and holding times during tempering between 30 seconds and 15 minutes. The heating and cooling rates should be at least 15 K / min.
  • the shell of the hard body has means which allow a mounting structure such as e.g. Welding straps or a thread.
  • a mounting structure such as e.g. Welding straps or a thread.
  • the hard body can thus be securely fixed in the roll or on the roll edges.
  • Such a mounting structure would hardly be feasible on a hard body.
  • Other possibilities include a recess or circumferential groove for introducing an annular spring.
  • Such a hard body could be removed by welding a tab or similar. for a slide hammer. After the impact of a hard body in the bore of the roller, the spring leads to a frictional connection.
  • the sheath has a profiling of the outer surface of the hard body, which allows a pressing into the role of the roller press, similar to a notched nail.
  • the hard bodies have a core of weldable material, in particular steel, which makes it possible to weld an aid with which the removal of the hard body from the roll is facilitated.
  • the shell or sleeve there is a positive connection between the shell or sleeve and the part of the hard body located therein.
  • a release from the shell due to large temperature fluctuations or other influences can be prevented.
  • a recess in the outer casing of the casing or sleeve is preferred, in particular on the end face of the hard body, which is directed towards the middle of the roll in the installed state.
  • the recess allows venting of the cavity during insertion into the closely tolerated receiving bore in the roller shell, and thus facilitates the introduction into the bores of the roller shell.
  • the wear-resistant hard bodies are glued into holes in the roller.
  • a defined adhesive gap can be achieved.
  • the gluing also unnecessarily lengthens the manufacturing process since the hard bodies can only be glued in after the band has been shrink-wrapped, otherwise the glue would burn.
  • Last but not least, doing without the adhesive is environmentally friendly.
  • the adhesive connection is destroyed anyway during the first run of the rollers.
  • the high strength iron alloy is FeCrMoVC.
  • the advantage of this material is primarily the favorable combination of high hardness and strength, at the same time high ductility. Thus, a high resistance to abrasive and impact loads is to be expected. Furthermore, this material offers the opportunity to become tungsten regardless of the strategic material and to reduce costs while at the same time reducing manufacturing costs.
  • the roller according to the invention for a roller press has at least one previously described hard body as a grid armor.
  • the roll for the roller press has side wear protection elements which are also made from a high strength iron based alloy (IFW).
  • Side wear protection elements are elements of the armor in the region of the transition from the lateral surface to the end face of the roller. Also, it may be advantageous to make the mold so that it allows a mounting structure such. Welding or thread, which are hardly feasible on a hard body to secure them securely to the roll edges.
  • the method according to the invention relates to the primary shaping of the wear-resistant hard bodies.
  • the prototyping of the wear-resistant hard body takes place in a closed shell or sleeve as a casting mold. For this purpose, it is placed in a preferably cooled casting housing and then filled with the molten alloy.
  • the shell preferably has a circular cylindrical cross-section with a hemispherical end. Further preferably, the G maneinhausung the mold is divided, which advantageously facilitates the removal of the workpiece.
  • the outer side of the casting shell that is to say the outer diameter of a circular cross-sectional shape, corresponds to the fit of the wear-resistant hard bodies in the bandage of the roll.
  • FIG. 1 shows a hard body 1 according to the invention of a high-strength iron-based alloy, namely FeCrMoVC in a closed on one side, hollow cylindrical shell 2 of eg copper.
  • a hard body 1 according to the invention of a high-strength iron-based alloy, namely FeCrMoVC in a closed on one side, hollow cylindrical shell 2 of eg copper.
  • the shell 2 is placed in a two-part coolable housing and closed the enclosure.
  • the melt of the alloy FeCrMoVC according to the invention is filled in the casing 2 within the housing 1, 2.
  • a tempering by the hard body 4 is heated in the shell 2 twice in succession for 10 minutes to a temperature of 600 ° C.
  • FIG. 2 shows a hard body 1 according to the invention with a sheath 3 having a taper.
  • a taper occurs a positive connection of the hard body 1 in the shell 3, whereby falling out of the hard body from the shell 3 can be avoided.
  • FIG. 3 also shows a hard body 1 according to the invention with a shell 4 comprising a circumferential annular groove in which an annular spring 5 is arranged.
  • annular spring 5 By the annular spring 5, a release of the shell 4 can be prevented from the bandage of the role.
  • a tab is welded to the shell 4 and the hard body 1 is pulled out of this tab by means of a sliding hammer.
  • FIG. 4 shows a hard body 1 with an inner core 6 made of steel.
  • This core 6 allows a simple expansion, by an aid can be welded to the core 6, with which the hard body 1 together with the shell 7 from the bandage of the role is easily pulled out.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Sealing Devices (AREA)
  • Treatment Of Fiber Materials (AREA)
  • Battery Electrode And Active Subsutance (AREA)
  • Forging (AREA)

Claims (16)

  1. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux, caractérisé en ce que le corps solide (1) est composé au moins en partie d'un alliage à haute résistance sur base de fer et comporte sur la surface d'enveloppe une gaine (2) ou douille en une autre matière, notamment en acier, en cuivre ou en un alliage de cuivre, l'alliage à haute résistance sur base de fer étant un alliage FeCrMoVC ou un alliage Fea E1b E2c E3d E4e dans lequel
    E1 est un ou plusieurs éléments du groupe Cr, V, Mn, Co et Ni,
    E2 est un ou plusieurs éléments du groupe Mo, Nb, Zr, Y, Hf, Ti, Ta et W,
    E3 est un ou plusieurs éléments du groupe Sn, Al, Ga, Pb et
    E4 est un ou plusieurs éléments du groupe Si, P, C et B,
    dans un ordre de proportion (a, b, c, d, e, en % en atomes) a = 100- (b + c + d + e), b = de 1 à 12, c = de 1 à 12, d = de 0 à 12, e = de 1 à 25
    et le corps solide (1) étant fabriqué par coulée d'une masse d'alliage fondue de l'alliage sur base de fer dans la gaine (2) ou douille.
  2. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon la revendication 1, caractérisé en ce que
    les corps solide (1) présentent une forme cylindrique circulaire, la face frontale des corps solides (1) dirigée vers le centre du rouleau présentant une forme conique ou arrondie.
  3. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon la revendication 2, caractérisé en ce que
    la gaine (2) est un cylindre creux fermé sur un côté avec une section transversale cylindrique circulaire et en ce que la face frontale fermée est conçue en forme de demi-sphère.
  4. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon la revendication 3, caractérisé en ce que
    la gaine (3) comporte à l'intérieur une saillie, de sorte à donner naissance à une complémentarité de forme entre la gaine (3) et le corps solide (1).
  5. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon l'une quelconque des revendications 3 ou 4,
    caractérisé en ce que
    sa face extérieure, la gaine (4) comporte sur un logement pour un ressort annulaire (5).
  6. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon l'une quelconque des revendications 3 à 5,
    caractérisé en ce que
    sur sa face frontale fermée, la gaine (4) comporte un creux.
  7. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon l'une quelconque des revendications 3 à 6,
    caractérisé en ce que
    au centre en direction axiale, le corps solide (1) comporte une âme en une matière soudable.
  8. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon l'une quelconque des revendications précédentes,
    caractérisé en ce que
    sur la face extérieure, la gaine (2) ou douille comporte un profilage.
  9. Corps solide (1) en tant que blindage en réseau d'un rouleau pour une presse à rouleaux selon l'une quelconque des revendications précédentes,
    caractérisé en ce que l'alliage ferreux à haute résistance est du FeCrMoVC.
  10. Rouleau pour une presse à rouleaux comportant au moins un corps solide (1) selon l'une quelconque des revendications précédentes.
  11. Rouleau pour une presse à rouleaux selon la revendication 10, caractérisé en ce que
    les corps solides (1) résistant à l'usure sont collés avec des ajustements dans des perçages dans le bandage du rouleau.
  12. Rouleau pour une presse à rouleaux selon la revendication 10, caractérisé en ce que
    les corps solides (1) résistant à l'usure sont enfoncés dans des perçages dans le bandage du rouleau.
  13. Rouleau pour une presse à rouleaux selon l'une quelconque des revendications 10 à 12, caractérisé en ce que
    le rouleau comporte des éléments anti-usure latérale réalisés sous la forme de corps solide (1) en un alliage ferreux à haute résistance.
  14. Procédé destiné à fabriquer un corps solide résistant à l'usure (1) selon l'une quelconque des revendications 2 à 9, caractérisé en ce que
    pour couler le corps solide (1), on introduit une gaine ou douille dans une enceinte de coulée divisée, que l'on remplit avec la masse d'alliage fondue.
  15. Procédé destiné à fabriquer un corps solide résistant à l'usure (1) selon la revendication 14, caractérisé en ce que
    l'enceinte de coulée est refroidie par liquide.
  16. Utilisation d'un alliage à haute résistance sur la base de fer pour la fabrication de corps solides (1) ou d'éléments anti-usure latérale pour le rouleau d'une presse à rouleaux, l'alliage à haute résistance sur base de fer étant un alliage FeCrMoVC ou un alliage Fea E1b E2c E3d E4e dans lequel
    E1 est un ou plusieurs éléments du groupe Cr, V, Mn, Co et Ni,
    E2 est un ou plusieurs éléments du groupe Mo, Nb, Zr, Y, Hf, Ti, Ta et W,
    E3 est un ou plusieurs éléments du groupe Sn, Al, Ga, Pb et
    E4 est un ou plusieurs éléments du groupe Si, P, C et B,
    dans un ordre de proportion (a, b, c, d, e, en % en atomes) a = 100- (b + c + d + e), b = de 1 à 12, c = de 1 à 12, d = de 0 à 12, e = de 1 à 25
    et le corps solide (1) étant fabriqué par coulée d'une masse d'alliage fondue de l'alliage sur base de fer dans la gaine (2) ou douille.
EP16167477.5A 2015-04-29 2016-04-28 Corps dur pour un blindage en reseau pour une presse a rouleaux, son procede de production, et rouleau pour une presse a rouleaux Active EP3088084B1 (fr)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
DE102015207922.8A DE102015207922A1 (de) 2015-04-29 2015-04-29 Hartkörper als Rasterpanzerung für eine Rollenpresse, Verfahren zur dessen Herstellung, und Rolle für eine Rollenpresse

Publications (2)

Publication Number Publication Date
EP3088084A1 EP3088084A1 (fr) 2016-11-02
EP3088084B1 true EP3088084B1 (fr) 2017-11-22

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EP16167477.5A Active EP3088084B1 (fr) 2015-04-29 2016-04-28 Corps dur pour un blindage en reseau pour une presse a rouleaux, son procede de production, et rouleau pour une presse a rouleaux

Country Status (8)

Country Link
US (1) US10155226B2 (fr)
EP (1) EP3088084B1 (fr)
AU (1) AU2016202695B2 (fr)
CA (1) CA2928331C (fr)
CL (1) CL2016001037A1 (fr)
DE (1) DE102015207922A1 (fr)
DK (1) DK3088084T3 (fr)
PE (1) PE20161089A1 (fr)

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EP4065282B1 (fr) * 2019-11-26 2023-12-13 FLSmidth A/S Élément résistant à l'usure pour un appareil de broyage

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GB201720212D0 (en) * 2017-12-05 2018-01-17 Element Six Gmbh High pressure grinding roller stud
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BE1027797B1 (de) * 2019-11-26 2021-06-23 Thyssenkrupp Ind Solutions Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
CN115161557A (zh) * 2022-07-07 2022-10-11 唐山天和环保科技股份有限公司 一种煤矿用破碎机齿帽及其制备方法

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Also Published As

Publication number Publication date
US20160318024A1 (en) 2016-11-03
CA2928331A1 (fr) 2016-10-29
AU2016202695B2 (en) 2017-08-31
CL2016001037A1 (es) 2017-02-03
DE102015207922A1 (de) 2016-11-03
AU2016202695A1 (en) 2016-11-17
EP3088084A1 (fr) 2016-11-02
DK3088084T3 (da) 2018-01-29
CA2928331C (fr) 2018-09-18
US10155226B2 (en) 2018-12-18
PE20161089A1 (es) 2016-10-22

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