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EP2674221B1 - Verfahren zur herstellung verschleissfester platten und verschleissfeste platte - Google Patents

Verfahren zur herstellung verschleissfester platten und verschleissfeste platte Download PDF

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Publication number
EP2674221B1
EP2674221B1 EP13169360.8A EP13169360A EP2674221B1 EP 2674221 B1 EP2674221 B1 EP 2674221B1 EP 13169360 A EP13169360 A EP 13169360A EP 2674221 B1 EP2674221 B1 EP 2674221B1
Authority
EP
European Patent Office
Prior art keywords
inserts
cavities
wear
coupling
resistant
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
EP13169360.8A
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English (en)
French (fr)
Other versions
EP2674221A1 (de
Inventor
Alberto Palladini
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.)
Certech SpA A Socio Unico
Original Assignee
Certech SpA A Socio Unico
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Publication date
Application filed by Certech SpA A Socio Unico filed Critical Certech SpA A Socio Unico
Publication of EP2674221A1 publication Critical patent/EP2674221A1/de
Application granted granted Critical
Publication of EP2674221B1 publication Critical patent/EP2674221B1/de
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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
    • B02C17/00—Disintegrating by tumbling mills, i.e. mills having a container charged with the material to be disintegrated with or without special disintegrating members such as pebbles or balls
    • B02C17/18—Details
    • B02C17/22—Lining for containers
    • B02C17/225—Lining for containers using rubber or elastomeric material

Definitions

  • the object of the present invention is a process for realizing wear-resistant panels usable for the formation of anti-wear and/or decorative and/or acoustic insulation surfaces.
  • It may also be used for the manufacture of mineral feeder devices, tanks of operating and transport means, impact and fall tracks or zones in plants for processing stone materials, and also for the realization of flooring in zones particularly subject to wear and walkways of various types.
  • grinding occurs in one or more chambers placed in rotation in which, besides the material to be ground and possibly water, in the case of wet grinding, the grinding bodies or balls are in contact with the inside walls of the chambers, which are protected by suitable coverings. Coverings realized in various materials are known.
  • coverings are known realized in hard materials, for example alumina-based, which are obtained by arranging actual bricks, adjacent to and cemented with each other so as to cover all the inside walls of the grinding chambers. These are actual building constructions which require a great deal of time for assembly and repair.
  • wear-resistant rubber coverings in wear-resistant rubber are also known, which are realized with modular elements formed of plates and blanks of various dimensions. Said types of realization require relatively low commissioning times and have the positive characteristic of allowing fairly easy replacement of worn single plates or elements.
  • wear-resistant rubber coverings require the entire covering, or even only part of it, to be replaced with a certain frequency. Due to the geometrical and functioning characteristics of the grinders, parts of these coverings exist which are, in fact, more subject to wear than others. There is therefore the need, in these cases, to stop the grinder in order to proceed with replacement solely of certain worn parts of the covering and not the entire covering.
  • Wear-resistant coverings are also known, for example, such as the one illustrated in Italian patent no. 1287434 , which shows a wear-resistant covering for grinders comprising a rubber base, into which plates in hard material are inserted, which face with part of their external surface on the surface subject to wear of the covering itself.
  • Wear-resistant coverings such as the one just cited, which may be realised by incorporating bricks in wear-resistant material such as alumina into the rubber base, despite being able to perform their function with an advantage with respect to the previous coverings, still have defects and problems which basically originate in the realization process, which requires each portion to include wear-resistant bricks in the mass of a rubber base by means of pressing and vulcanisation operations and subsequent assembly of the various portions of covering thus realized to form the complete covering.
  • wear-resistant panels are known from WO 2011/012629 and US 6189280 .
  • An advantage of the invention consists in the simplicity of its embodiment.
  • Another advantage of the invention consists in the possibility of realising with great construction simplicity, on the surface subject to wear, a distribution of the inserts in hard material with a geometrical arrangement in which the distance between any two adjacent inserts may be extremely limited and substantially uniform across the entire surface.
  • Another advantage is the possibility of graduating with precision the entity of any projection of the individual inserts from the surface subject to wear, thus making it possible also to give body to geometrically pre-established zones characterised by different resistances to wear.
  • a further advantage of the invention consists in its structural capacity to be used for an extremely wide range of applications.
  • 1 denotes in its entirety a wear-resistant panel which is usable to be assembled with others to form wear-resistant surfaces.
  • a matrix 2 having a plurality of cavities 4 which are obtained on a working surface 3 of the matrix 2.
  • the cavities 4 are dimensioned and shaped to accommodate wear-resistant inserts 5 of a matching size and stably.
  • Said inserts 5 are characterised by considerable hardness and/or by a considerable volumic mass.
  • Each wear-resistant panel 1 is characterised in that the wear-resistant inserts 5 are shaped and dimensioned in relation to the shape and size of the cavities 4 so that, when insertion and coupling are completed, the inserts are firmly anchored to the respective cavities.
  • the cavities 4 are shaped and dimensioned in relation to the shape and size of the inserts 5 so that, when insertion and coupling are completed, a portion of said each insert 5 is at least partially externally projecting with respect to said work surface 3.
  • Embodiments of the invention are also envisaged in which the cavities 4 are shaped and dimensioned in relation to the shape and size of the inserts 5 so that, when insertion and coupling are completed, at least one portion of said each insert 5 is placed at the same level of the work surface 3, so that it does not project from it.
  • Embodiments are also envisaged in which the inserts 5 or part of them, when insertion and coupling are completed, are placed beneath the established level of the work surface 3.
  • the panel in question may be used for realization of the wear-resistant covering of the internal surface, and therefore also of the cylindrical part of the drum of a ball grinder.
  • a ball grinder for fine grinding of the raw materials used for manufacturing ceramic articles.
  • the wear-resistant panel 1 is obtained by means of a process for realizing panels usable for the formation of anti-wear surfaces, comprising the following steps:
  • the reciprocal coupling surfaces of the cavities 4 and the respective inserts 5 are shaped to allow accurate centring of the inserts 5 in the cavities 4 and a pre-established distribution of any adhesive in the coupling zone, clearly if adhesive is used to ensure stability of the coupling.
  • the cavities 4 are shaped and dimensioned in relation to the shape and size of the inserts 5 with an insertion mouth 40.
  • the cavities 4 have at least the concave part of the coupling surface situated in proximity to the insertion mouth 40 configured with ridges or ribs 41 suitable for achieving the centring of the respective inserts 5 and assisting pre-established distribution of the adhesive.
  • the cavities 4 have at least the concave part of the coupling surface situated in proximity to the insertion mouth 40 with an overall cylindrical shape.
  • the formation of the cavities 4 is obtainable with methods which are linked to the technological characteristics of the material of which the matrix 2 is made.
  • the latter is made of resistant materials, preferably with high elastic deformability, such as natural or synthetic rubbers and the like. In this case, formation of the cavities and with them the matrix 2 of the panel is frequently realized with pressing processes.
  • the matrix 2 is formed of resistant materials, with good elastic deformability, such as plastic materials and the like.
  • resistant materials usable may be metals and metal alloys, for which appropriate production technologies may be used for realization of the matrixes 2 and the relative cavities 4.
  • fixing of the inserts 5 is realised by means of gluing or simply, without a binder but by means of a forced coupling which preferably exploits the elastic deformability of at least one of the two parts generally formed of the matrix 2 in which the cavities 4 are obtained.
  • ridges or ribs 41 may be used suitable both for obtaining centring of the respective inserts 5 and also for creating with them a situation of interference which implements the relative fixing.
  • "cold" gluing may be used, which does not require the heat treatments necessary, for example, for vulcanisation of rubber.
  • inserts characterised by geometrical shapes deemed more efficient.
  • a hexagonal shape may allow a honeycomb distribution to be realised which allows excellent use of the work surface 3.
  • the characteristics of the invention allow a wide range of applications.
  • acoustic insulation material which may or may not be combined also with a decorative function.
  • the acoustic insulation properties of the invention derive principally from the quality of the materials used, particularly those of the inserts, which are characterised by a high volumic mass.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Laminated Bodies (AREA)
  • Finishing Walls (AREA)

Claims (10)

  1. Verfahren zur Herstellung von verschleißfesten Platten, die zur Bildung von Anti-Verschleiß-Oberflächen verwendbar sind, umfassend die folgenden Schritte:
    - Bilden einer Matrix (2) mit einer Stützfunktion, die auf einer Arbeitsfläche (3) mit einer Vielzahl von Hohlräumen (4) versehen ist, die zur Aufnahme von verschleißfesten Einsätzen (5) passender Größe dimensioniert und geformt sind und über die Arbeitsfläche (3) nach einer vorgegebenen Reihenfolge und geometrischen Anordnung verteilt sind;
    - Auftragen von Klebstoff, falls erforderlich;
    - Einführen der Einsätze (5) in die Hohlräume (4);
    - Aushärten, falls erforderlich;
    wobei die Hohlräume (4) in Bezug auf die Form und Größe der Einsätze (5) so geformt und dimensioniert sind, dass die Einsätze nach dem Einführen und Koppeln fest an den jeweiligen Hohlräumen verankert sind; wobei jeder der Hohlräume einen Einführungsmund und eine Kupplungsfläche umfassend einen konkaven Teil aufweist, wobei der konkave Teil der Kupplungsfläche in der Nähe des Einführungsmundes (40) mit Kanten oder Rippen (41) konfiguriert ist, deren Funktion darin besteht, die Zentrierung der jeweiligen Einsätze (5) zu erzielen, sowie eine vorher festgelegte Klebstoffverteilung in der Kupplungszone zu fördern.
  2. Verfahren nach Anspruch 1, wobei die Befestigung der Einsätze (5) mittels einer Zwangskopplung ohne Klebstoff erzielt wird, die vorzugsweise die elastische Verformbarkeit mindestens eines der zwei Teile ausnutzt, im allgemeinen bestehend aus der Matrix (2), in der die Hohlräume (4) ausgebildet sind.
  3. Verfahren nach Anspruch 2, wobei die Zwangskopplung mittels der Kanten und Rippen (41) erfolgt, deren Funktion neben der Erzielung der Zentrierung der jeweiligen Einsätze (5) darin besteht, mit ihnen eine Störsituation zu erzeugen, die die relative Befestigung bewirkt.
  4. Verfahren nach Anspruch 1, wobei die Hohlräume (4) in Bezug auf die Form und Größe der Einsätze (5) so geformt und dimensioniert sind, dass nach dem Einführen und Koppeln mindestens ein Abschnitt von jedem der Einsätze (5) mindestens teilweise aus der Arbeitsfläche (3) nach außen hervorsteht.
  5. Verfahren nach Anspruch 1, wobei die Hohlräume (4) mindestens im konkaven Teil der Kupplungsfläche in der Nähe des Einführungsmundes (40) eine zylindrische Gesamtform aufweisen.
  6. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Matrix (2) aus Natur- oder Synthesekautschuken gebildet wird.
  7. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Matrix (2) aus Kunststoffen gebildet wird.
  8. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Matrix (2) aus Metallen und Metalllegierungen gebildet wird.
  9. Verfahren nach einem der vorhergehenden Ansprüche, wobei die Matrix (2) aus keramischen Materialien, Glas und dergleichen gebildet wird.
  10. Verschleißfeste Platte, die zur Bildung verschleißfester Oberflächen verwendbar ist, die eine Matrix (2) umfasst, die eine Vielzahl von Hohlräumen (4) aufweist, die in einer Arbeitsfläche (3) der Matrix (2) ausgebildet und so dimensioniert und geformt sind, dass sie verschleißfeste Einsätze (5) passender Größe standfest aufnehmen, wobei die Hohlräume (4) in Bezug auf die Form und Größe der Einsätze (5) so geformt und dimensioniert sind, dass die Einsätze nach dem Einführen und Koppeln fest mit den jeweiligen Hohlräumen verankert sind;
    wobei jeder der Hohlräume einen Einführungsmund und eine Kupplungsfläche umfassend einen konkaven Teil aufweist, dadurch gekennzeichnet, dass der konkave Teil der Kupplungsfläche in der Nähe des Einführungsmundes (40) mit Kanten und Rippen (41) konfiguriert ist, deren Funktion darin besteht, die Zentrierung der jeweiligen Einsätze (5) zu erzielen, sowie eine vorher festgelegte Klebstoffverteilung in der Kupplungszone zu fördern.
EP13169360.8A 2012-06-11 2013-05-27 Verfahren zur herstellung verschleissfester platten und verschleissfeste platte Active EP2674221B1 (de)

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
IT000152A ITMO20120152A1 (it) 2012-06-11 2012-06-11 Procedimento per la realizzazione di pannelli antiusura.

Publications (2)

Publication Number Publication Date
EP2674221A1 EP2674221A1 (de) 2013-12-18
EP2674221B1 true EP2674221B1 (de) 2018-07-11

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Application Number Title Priority Date Filing Date
EP13169360.8A Active EP2674221B1 (de) 2012-06-11 2013-05-27 Verfahren zur herstellung verschleissfester platten und verschleissfeste platte

Country Status (3)

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EP (1) EP2674221B1 (de)
IT (1) ITMO20120152A1 (de)
MX (1) MX357689B (de)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021221726B2 (en) * 2021-06-08 2023-06-01 Resources Unity Enterprise Pty Ltd Wear liner assembly

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US10543985B2 (en) 2015-01-19 2020-01-28 Flsmidth A/S Interlocking wear-resistant panel system
GB2589922A (en) * 2019-12-13 2021-06-16 Vulco Sa Liner for a grinding mill

Family Cites Families (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
IT1287434B1 (it) 1996-05-20 1998-08-06 Euromontaggi S R L Rivestimento antiusura per mulini
SE509249C2 (sv) * 1998-02-27 1998-12-21 Svedala Trellex Ab För nötning utsatt vägg samt slitfoderelement och fästorgan för bildande av en sådan vägg
ITMI20091338A1 (it) * 2009-07-28 2011-01-29 B & B S R L Rivestimento ed inserto protettivo per pareti di mulini, mescolatrici, tramogge ed altre macchine

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
None *

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021221726B2 (en) * 2021-06-08 2023-06-01 Resources Unity Enterprise Pty Ltd Wear liner assembly

Also Published As

Publication number Publication date
MX357689B (es) 2018-07-18
ITMO20120152A1 (it) 2013-12-12
MX2013006573A (es) 2014-02-06
EP2674221A1 (de) 2013-12-18

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