EP3088084A1 - Corps dur pour un blindage en réseau pour une presse à rouleaux, son procédé de production, et rouleau pour une presse à rouleaux - Google Patents

Corps dur pour un blindage en réseau pour une presse à rouleaux, son procédé de production, et rouleau pour une presse à rouleaux Download PDF

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Publication number
EP3088084A1
EP3088084A1 EP16167477.5A EP16167477A EP3088084A1 EP 3088084 A1 EP3088084 A1 EP 3088084A1 EP 16167477 A EP16167477 A EP 16167477A EP 3088084 A1 EP3088084 A1 EP 3088084A1
Authority
EP
European Patent Office
Prior art keywords
hard body
roller
roller press
roll
hard
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
EP16167477.5A
Other languages
German (de)
English (en)
Other versions
EP3088084B1 (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
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 MAN Takraf Fordertechnik GmbH filed Critical MAN Takraf Fordertechnik GmbH
Publication of EP3088084A1 publication Critical patent/EP3088084A1/fr
Application granted granted Critical
Publication of EP3088084B1 publication Critical patent/EP3088084B1/fr
Not-in-force legal-status Critical Current
Anticipated expiration legal-status Critical

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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.
  • the object of the present invention is to propose an alternative grid armor for a roll of a roller press, which is inexpensive and has a long service life.
  • 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 production of the hard body by casting into the shell or sleeve made 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 sticking of the hard body in the role without the shell or sleeve has a large bond gap due to the high tolerances in the processing of the hard body or an oversize, through which the hard body can be pressed only with high force.
  • the high strength iron alloy (IFW) FeCrMoVC is particularly preferred.
  • INFW high strength iron alloy
  • 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 according to the invention 1 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 according to the invention 1 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)
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 Not-in-force 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 true EP3088084A1 (fr) 2016-11-02
EP3088084B1 EP3088084B1 (fr) 2017-11-22

Family

ID=56087086

Family Applications (1)

Application Number Title Priority Date Filing Date
EP16167477.5A Not-in-force 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)

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021105237A1 (fr) * 2019-11-26 2021-06-03 Thyssenkrupp Industrial Solutions Ag Élément résistant à l'usure pour un appareil de broyage
BE1027797B1 (de) * 2019-11-26 2021-06-23 Thyssenkrupp Ind Solutions Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
EP4065281B1 (fr) * 2019-11-26 2024-03-06 FLSmidth A/S Élément résistant à l'usure pour un dispositif de broyage

Families Citing this family (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102016200911A1 (de) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
GB201705576D0 (en) * 2017-04-06 2017-05-24 Element Six Gmbh Studs for high pressure grinding rollers
GB201720212D0 (en) * 2017-12-05 2018-01-17 Element Six Gmbh High pressure grinding roller stud
DE102018113440A1 (de) * 2018-06-06 2019-12-12 Maschinenfabrik Köppern Gmbh & Co. Kg Walzenpresse
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

Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443195A1 (fr) 1990-02-22 1991-08-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Blindage de surface résistant à l'usure pour les cylindres de machines à cylindres, en particulier les presses à cylindres à haute pression
DE4132474A1 (de) 1991-05-28 1992-12-03 Kloeckner Humboldt Deutz Ag Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen
DE102006024358A1 (de) 2006-05-17 2007-11-22 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Hochfeste, bei Raumtemperatur plastisch verformbare Formkörper aus Eisenlegierungen
EP2239058A2 (fr) 2009-04-01 2010-10-13 MEC Holding GmbH Cylindre à revêtement résistant à l'usure et procédé pour sa fabrication
US20110008569A1 (en) * 2009-07-09 2011-01-13 Madok John H Wear-resistant attachments for high-wear applications
WO2011072754A1 (fr) * 2009-12-18 2011-06-23 Metso Minerals (Wear Protection) Ab Éléments d'insertion allongés à deux matériaux pour rouleau de broyage
DE102010062011B3 (de) 2010-11-26 2011-12-01 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Verfahren zur Wärmebehandlung von hochfesten Eisenlegierungen
DE102010024221A1 (de) 2010-06-18 2011-12-22 Khd Humboldt Wedag Gmbh Profilierte Bandage für eine Rollenpresse
US20120073105A1 (en) * 2010-09-29 2012-03-29 Flsmidth A/S Method of Forming or Repairing Devices Configured to Comminute Material
DE102011104854A1 (de) 2011-06-21 2012-12-27 Khd Humboldt Wedag Gmbh Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern

Family Cites Families (9)

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SE392482B (sv) 1975-05-16 1977-03-28 Sandvik Ab Pa pulvermetallurgisk veg framstelld legering bestaende av 30-70 volymprocent
US7028936B2 (en) * 2003-06-11 2006-04-18 Kennametal Inc. Wear bars for impellers
DE10354679A1 (de) * 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes
US7427042B2 (en) * 2005-11-16 2008-09-23 Damian Rodriguez Wear tip for rotary mineral breaker
US7909279B2 (en) * 2006-12-12 2011-03-22 Kennametal Inc. Impact crusher wear components including wear resistant inserts bonded therein
DE102012102192B4 (de) * 2012-03-15 2020-01-23 Maschinenfabrik Köppern Gmbh & Co. Kg Presswalze für eine Walzenpresse
EP2991769B1 (fr) * 2013-05-01 2020-06-17 US Synthetic Corporation Ensembles rouleaux comprenant des garnitures super-dures, appareils à rouleaux de broyage à pression élevée utilisant ceux-ci et procédés d'utilisation
BE1021839B1 (fr) * 2014-04-23 2016-01-21 Magotteaux International S.A. Galet de broyage comportant des inserts a massivite elevee
WO2016150719A1 (fr) * 2015-03-25 2016-09-29 Flsmidth A/S Corps résistant à l'usure et sont procédé de production

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0443195A1 (fr) 1990-02-22 1991-08-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Blindage de surface résistant à l'usure pour les cylindres de machines à cylindres, en particulier les presses à cylindres à haute pression
DE4132474A1 (de) 1991-05-28 1992-12-03 Kloeckner Humboldt Deutz Ag Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen
DE102006024358A1 (de) 2006-05-17 2007-11-22 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Hochfeste, bei Raumtemperatur plastisch verformbare Formkörper aus Eisenlegierungen
EP2239058A2 (fr) 2009-04-01 2010-10-13 MEC Holding GmbH Cylindre à revêtement résistant à l'usure et procédé pour sa fabrication
US20110008569A1 (en) * 2009-07-09 2011-01-13 Madok John H Wear-resistant attachments for high-wear applications
WO2011072754A1 (fr) * 2009-12-18 2011-06-23 Metso Minerals (Wear Protection) Ab Éléments d'insertion allongés à deux matériaux pour rouleau de broyage
DE102010024221A1 (de) 2010-06-18 2011-12-22 Khd Humboldt Wedag Gmbh Profilierte Bandage für eine Rollenpresse
US20120073105A1 (en) * 2010-09-29 2012-03-29 Flsmidth A/S Method of Forming or Repairing Devices Configured to Comminute Material
DE102010062011B3 (de) 2010-11-26 2011-12-01 Leibniz-Institut Für Festkörper- Und Werkstoffforschung Dresden E.V. Verfahren zur Wärmebehandlung von hochfesten Eisenlegierungen
DE102011104854A1 (de) 2011-06-21 2012-12-27 Khd Humboldt Wedag Gmbh Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern

Cited By (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
WO2021105237A1 (fr) * 2019-11-26 2021-06-03 Thyssenkrupp Industrial Solutions Ag Élément résistant à l'usure pour un appareil de broyage
BE1027797B1 (de) * 2019-11-26 2021-06-23 Thyssenkrupp Ind Solutions Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
EP4065281B1 (fr) * 2019-11-26 2024-03-06 FLSmidth A/S Élément résistant à l'usure pour un dispositif de broyage
US12172172B2 (en) 2019-11-26 2024-12-24 Flsmidth A/S Wear-resistant element for a comminuting apparatus

Also Published As

Publication number Publication date
EP3088084B1 (fr) 2017-11-22
AU2016202695B2 (en) 2017-08-31
DE102015207922A1 (de) 2016-11-03
PE20161089A1 (es) 2016-10-22
CA2928331A1 (fr) 2016-10-29
DK3088084T3 (da) 2018-01-29
AU2016202695A1 (en) 2016-11-17
US20160318024A1 (en) 2016-11-03
US10155226B2 (en) 2018-12-18
CL2016001037A1 (es) 2017-02-03
CA2928331C (fr) 2018-09-18

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