EP1991358A1 - Corps durs pour la protection autogene contre l'usure de surfaces de rouleaux - Google Patents

Corps durs pour la protection autogene contre l'usure de surfaces de rouleaux

Info

Publication number
EP1991358A1
EP1991358A1 EP07723040A EP07723040A EP1991358A1 EP 1991358 A1 EP1991358 A1 EP 1991358A1 EP 07723040 A EP07723040 A EP 07723040A EP 07723040 A EP07723040 A EP 07723040A EP 1991358 A1 EP1991358 A1 EP 1991358A1
Authority
EP
European Patent Office
Prior art keywords
hard body
hard
recess
radially inner
roller
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.)
Withdrawn
Application number
EP07723040A
Other languages
German (de)
English (en)
Inventor
Alexander Hagedorn
Dieter Brendler
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.)
KHD Humboldt Wedag AG
Original Assignee
KHD Humboldt Wedag AG
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 KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
Publication of EP1991358A1 publication Critical patent/EP1991358A1/fr
Withdrawn legal-status Critical Current

Links

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

Definitions

  • the invention relates to hard body for partial insertion into recesses on the surface of the rolls of roller presses for the crushing granular material, wherein in the operation of the roller press the spaces between the rolling surface outwardly protruding hard bodies are filled with compressed fine-grained material for autogenous wear protection.
  • the pin-shaped stud bolts sit firmly in their blind holes. If it is necessary to replace individual stud bolts, it may be difficult to disassemble the stud bolts, especially if they are partly broken in their blind bores.
  • the invention has for its object to provide for the above-mentioned grid armor rolls roller presses hard body, which are relatively inexpensive to manufacture and especially relatively easy even in the damaged state from their respective roll body recesses for the purpose of roll repair are again disassembled ,
  • the hard body according to the invention namely the prefabricated usually produced by powder metallurgy z.
  • pin-shaped or cylindrical cylindrical carbide studs have a central recess extending from the radially inner end of the hard body over at least a portion of the hard body height. This central recess is dimensioned so that it does not weaken the hard body, but in any case by saving material for cost reduction in the production of prefabricated hard body contributes.
  • the more important advantage of the central recess in the prefabricated hard body is that the central recess is utilized for disassembling the hard body fixed in the respective roller body recess by passing through a central connection opening or opening into the central recess of the hard body, even if this should be partially broken Connection hole a suitable tool and / or a pressure medium such as pressure oil, compressed air, etc. for pulling out or pushing out and thus be introduced for disassembly of the hard body. In this way, damaged parts of equipped with the grid armor roll surfaces of roller presses can be repaired with relatively little effort.
  • the prefabricated, in particular powder-metallurgically produced cemented carbide bodies can also be designed such that the central recess extending from the radially inner end of the hard body over a part of the hard body height has a larger diameter than the adjoining to the radially outer end of the Hard body leading central recess, wherein at the transition from the radially inner recess of larger diameter to the radially outer recess of smaller diameter, a step is formed, which is suitable for attacking a suitable tool for disassembly of the hard body by pulling out of its respective Walzenausströmström.
  • FIG. 1 shows a vertical section of a cylindrical hard body with a central recess inserted in a bore of a waist jacket in a first embodiment
  • FIG. 3 shows a corresponding hard body in a third embodiment.
  • Fig. 1 shows a prefabricated cylindrical, in particular made of sintered hard metal powder metallurgy hard body 10, which is inserted into a corresponding bore of the roll shell 1 1, z. B. is glued, and having such a length or height that it protrudes from the surface of the roll shell 1 1 to the outside, so that by a plurality of such on the surface of the roll shell 1 1 of the rollers of a roller press arranged hard body, the above-mentioned grid armor comes with the autogenous wear protection stands.
  • the prefabricated hard body 10 has a prefabricated central recess 12, which extends from the radially inner end of the hard body over the entire height or length of the hard body, that is, the central recess 12 is a through hole. If there is a partial or complete damage of the hard body 10 during operation of the roller press for crushing granular material, then the through-opening 12 serves to facilitate disassembly of the hard body after it has been cleaned from the good material, by inserting a suitable tool into the through-opening 12 and / or a pressure medium such as pressure oil, compressed air, etc. for pulling / pushing out of the hard body 10 are introduced.
  • a suitable tool into the through-opening 12 and / or a pressure medium such as pressure oil, compressed air, etc. for pulling / pushing out of the hard body 10 are introduced.
  • the central passage opening of the hard body 10a is formed so that the extending from the radially inner end of the hard body 10a over a portion of the hard body height extending central recess 13 has a larger diameter than the adjoining the radially outer end of the Hard body leading central recess 14, wherein at the transition from the radially inner recess of larger diameter to the radially outer recess smaller diameter a step 15 for the attack of a tool for disassembly of the hard body 10a is formed from its respective roller bore.
  • the disassembled recesses 14 and 13 are cleaned by the grinding stock treated in the roller press before disassembly of the hard body 10a.
  • the originally existing central recess 13, which originates from the radially inner end of the hard body 10b, is not continuous at the top, but initially closed at the top.
  • the disassembly of the hard body 10b introduced into this from the outside inwards with a suitable tool indicated by dashed lines auxiliary bore then then the disassembly of this type of hard body 10b can be done.
  • the hard bodies may have their radially inner ends and, correspondingly, the roll body recesses approximately the curved shape of a hemispherical calotte 16 in their deepest region in all embodiments.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)
  • Reduction Rolling/Reduction Stand/Operation Of Reduction Machine (AREA)
  • Powder Metallurgy (AREA)

Abstract

L'invention concerne la production de corps durs fabriqués en général par métallurgie des poudres, pour la protection de cylindres de presses à rouleaux contre l'usure sous la forme d'un blindage tramé, qui soient relativement économiques à fabriquer et qui surtout puissent, même à l'état endommagé, être démontés de manière relativement simple des découpes du corps de rouleau respectives pour réparer le rouleau. Selon l'invention, les corps durs préfabriqués (10, 10a, 10b) sont dotés d'une découpe centrale (12, 13, 14) préfabriquée qui partant de l'extrémité radiale intérieure des corps durs s'étend sur au moins une partie de la hauteur des corps durs.
EP07723040A 2006-03-04 2007-03-05 Corps durs pour la protection autogene contre l'usure de surfaces de rouleaux Withdrawn EP1991358A1 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102006010042A DE102006010042A1 (de) 2006-03-04 2006-03-04 Hartkörper für den autogenen Verschleißschutz von Walzenoberflächen
PCT/EP2007/001860 WO2007098966A1 (fr) 2006-03-04 2007-03-05 Corps durs pour la protection autogene contre l'usure de surfaces de rouleaux

Publications (1)

Publication Number Publication Date
EP1991358A1 true EP1991358A1 (fr) 2008-11-19

Family

ID=38050908

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07723040A Withdrawn EP1991358A1 (fr) 2006-03-04 2007-03-05 Corps durs pour la protection autogene contre l'usure de surfaces de rouleaux

Country Status (9)

Country Link
US (1) US20090218429A1 (fr)
EP (1) EP1991358A1 (fr)
CN (1) CN101394931A (fr)
AU (1) AU2007220605A1 (fr)
BR (1) BRPI0708544A2 (fr)
DE (1) DE102006010042A1 (fr)
RU (1) RU2008134634A (fr)
WO (1) WO2007098966A1 (fr)
ZA (1) ZA200807202B (fr)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397802A (zh) * 2011-11-18 2012-04-04 中信重工机械股份有限公司 一种新型挤压辊类辊面结构

Families Citing this family (17)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102009039928B3 (de) * 2009-08-17 2011-03-03 Khd Humboldt Wedag Gmbh Rollenpressen-Rasterpanzerung mit ringförmigen Bolzen und Verfahren zur Erneuerung der Bewehrung dieser Rasterpanzerung
CN101823011A (zh) * 2010-03-23 2010-09-08 中信重工机械股份有限公司 一种辊压磨的柱钉式辊面结构及柱钉更换方法
US20130023393A1 (en) * 2010-04-16 2013-01-24 Flsmidth A/S Wear-resistant roller
US8484824B2 (en) 2010-09-01 2013-07-16 Flsmidth A/S Method of forming a wearable surface of a body
CA2823354A1 (fr) * 2010-12-29 2012-07-05 Flsmidth A/S Corps de broyage et son procedede fabrication
DE102011104854B4 (de) 2011-06-21 2015-06-11 Khd Humboldt Wedag Gmbh Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern
CN103008051A (zh) * 2012-12-29 2013-04-03 成都利君实业股份有限公司 一种磁性柱钉辊子
DE102016200912A1 (de) 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
DE102016200911A1 (de) 2016-01-22 2017-07-27 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
DE102019201098A1 (de) 2019-01-29 2020-07-30 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungsvorrichtung
DE102019201097A1 (de) 2019-01-29 2020-07-30 Thyssenkrupp Ag Verschleißschutzelement für eine Zerkleinerungsvorrichtung
CN109909011A (zh) * 2019-03-12 2019-06-21 中钢集团安徽天源科技股份有限公司 一种辊磨机用柱头式合金块结构及制作方法
EP4065281B1 (fr) 2019-11-26 2024-03-06 FLSmidth A/S Élément résistant à l'usure pour un dispositif de broyage
BE1027797B1 (de) 2019-11-26 2021-06-23 Thyssenkrupp Ind Solutions Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
EP4065282B1 (fr) 2019-11-26 2023-12-13 FLSmidth A/S Élément résistant à l'usure pour un appareil de broyage
BE1027796B1 (de) 2019-11-26 2021-06-23 Thyssenkrupp Ind Solutions Ag Verschleißschutzelement für eine Zerkleinerungseinrichtung
CN110846582A (zh) * 2019-12-23 2020-02-28 浙江联创焊接技术有限公司 一种辊压机中的挤压辊辊套及其制备方法

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DE1284266B (de) * 1964-08-22 1968-11-28 Doerries Gmbh Mahlwerkzeuge fuer Stiftmuehlen zum Zerkleinern, Zerfasern, Mahlen und/oder sonstigen Behandeln von Gut, insbesondere von Gut fuer die Papier-, Pappe- oder Kartonherstellung
DE4321427A1 (de) * 1992-07-09 1994-01-13 Kloeckner Humboldt Deutz Ag Verschleißfeste Walze für die Verwendung in Zweiwalzenmaschinen, insbesondere in Hochdruck-Walzenpressen
DE4324074A1 (de) * 1993-07-17 1995-01-19 Kloeckner Humboldt Deutz Ag Verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen und Verfahren zum Aufbau einer solchen Walzenpanzerung
DE4422699A1 (de) * 1994-06-29 1996-01-04 Kloeckner Humboldt Deutz Ag Walze für eine Hochdruck-Walzenpresse insbesondere zur Gutbettzerkleinerung körnigen Gutes
DE19515568A1 (de) * 1995-04-27 1996-10-31 Krupp Polysius Ag Mahlelement und Verfahren zu dessen Herstellung
DE19618143A1 (de) * 1996-05-06 1997-11-13 Krupp Polysius Ag Mahlwalze sowie Betriebs- und Reparaturverfahren
DE19638237A1 (de) * 1996-09-19 1998-03-26 Deutz Ag Verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes
DE10335115A1 (de) * 2003-07-31 2005-02-24 Polysius Ag Mahlwalze
DE10354679A1 (de) * 2003-11-22 2005-06-30 Khd Humboldt Wedag Ag Mahlwalze für die Druckzerkleinerung körnigen Gutes

Non-Patent Citations (1)

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Title
See references of WO2007098966A1 *

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102397802A (zh) * 2011-11-18 2012-04-04 中信重工机械股份有限公司 一种新型挤压辊类辊面结构
CN102397802B (zh) * 2011-11-18 2015-09-09 中信重工机械股份有限公司 一种新型挤压辊类辊面结构

Also Published As

Publication number Publication date
BRPI0708544A2 (pt) 2011-05-31
DE102006010042A1 (de) 2007-09-06
US20090218429A1 (en) 2009-09-03
WO2007098966A8 (fr) 2008-10-09
RU2008134634A (ru) 2010-04-20
CN101394931A (zh) 2009-03-25
ZA200807202B (en) 2009-07-29
AU2007220605A1 (en) 2007-09-07
WO2007098966A1 (fr) 2007-09-07

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