EP1804973B1 - Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture - Google Patents

Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture Download PDF

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Publication number
EP1804973B1
EP1804973B1 EP05783028.3A EP05783028A EP1804973B1 EP 1804973 B1 EP1804973 B1 EP 1804973B1 EP 05783028 A EP05783028 A EP 05783028A EP 1804973 B1 EP1804973 B1 EP 1804973B1
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EP
European Patent Office
Prior art keywords
casing
annular casing
roller
spaced
annular
Prior art date
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Active
Application number
EP05783028.3A
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German (de)
English (en)
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EP1804973B9 (fr
EP1804973A1 (fr
Inventor
Alexander Hagedorn
Meinhard Frangenberg
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
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KHD Humboldt Wedag AG
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Application filed by KHD Humboldt Wedag AG filed Critical KHD Humboldt Wedag AG
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Publication of EP1804973B9 publication Critical patent/EP1804973B9/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

Definitions

  • the invention relates to a ring bandage with a wear-resistant surface for a press roll for the compressive stress of granular material, in particular for roller presses for Gutbettzerkleintation. Moreover, the invention relates to a method for manufacturing such a press roll ring bandage.
  • They should have a high wear resistance, can be produced inexpensively, can be repaired by the operator of the roller press, and also have a good intake behavior for the product to be shredded.
  • the invention has for its object to provide in particular for the press rolls of roller presses for crushing granular material a ring bandage whose outer surface always has a high wear resistance, without embedded carbide body such. B. need to apply powder-metallurgically produced stud bolts.
  • the material of the ring bandage according to the invention for a press roll in particular for the comminution fine granular material consists of cast iron with nodular graphite bainitic structure with retained austenite, this material is adjusted in its property that it has such a ductility that the ring bandage whose wall thickness to may amount to about 500 mm, without risk of breakage on a roll body with shaft journals shrink down. Surprisingly, it has been shown that through external pressure load of the bandage surface of the casting material hardens on its surface and in its peripheral layers by formation of martensite.
  • the greatest hardness and wear resistance is substantially at the surface and in the edge layers of the bandage and not in the radially inner regions of the bandage.
  • the hardness in the marginal layers of the bandage forms and renews itself during operation of the roll machine again and again until the bandage is consumed after a long service life to the structurally necessary residual wall thickness.
  • the ring bandage according to the invention thus forms self-hardening surface layers.
  • spaced-apart recesses are formed, for. B. molded during casting and / or formed by mechanical processing, in particular grooving, so that is pressed during operation of the rolling machine in the recesses of the profiled outer surface of the ring bandage to be treated
  • Gutmaterial which remains there during the roller revolutions, forms an autogenous wear protection for the drum surfaces and due to its roughness also has a good intake behavior.
  • lying between the spaced groove recesses profiling protrusions of the drum surface are still armored by existing hard material surfacing worms.
  • This additional armoring of the ring bandage according to the invention creates no problems, since the weld stresses arising during buildup welding are almost neutralized by the dimensioning and geometric distribution of the material bumps between the spaced grooves and thus the cracking of the annular bandage material is avoided by welding in this way.
  • the method for producing a press roller ring bandage for the compressive stress granular material especially for roller presses for Gutbettzerkleintation is according to the invention characterized in that the annular bandage is cast first of nodular cast iron with at least the alloying elements Ni and Mo while avoiding a pearlitic structure and by a subsequent heat treatment and subsequent controlled cooling of the cast body is given a bainitic structure with retained austenite, wherein pressure exerted by the outer surface of the annular bandage in their operation whose outer surface layers are cured again and again to form martensite.
  • the shaping of the surface profiling of the ring bandage is accomplished in particular by grooving.
  • Fig. 1 is on a roller body 8 with shaft journals 9a, 9b a ring bandage 10 with a wall thickness of z. B. 170 mm to 500 mm attached, in particular by shrinking.
  • the material of the bandage 10 consists of nodular cast iron with bainitic structure with retained austenite.
  • the roll surface contains high martensite portions, which are formed again and again by external pressure loading of the bandage surface, in particular during operation of the press roll.
  • the occurring in the Gutbettzerkleintation in the nip of a roller press pressure can, for. B. greater than 100 MPa and the specific pressing force z. B. 8 to 10 t / cm roll width.
  • the hardness of the ring bandage according to the invention can, for. B. be about 40 HRC.
  • the hardness and wear resistance form and renew during operation of the press roll over and over again until after a long life, the ring bandage is consumed.
  • Fig. 2 are formed in the outer surface of the annular band 10, 11 spaced-apart recesses, namely grooves 12, 13, which may be formed by casting, but are made in particular by mechanical processing such as grooving.
  • grooves 12, 13 which may be formed by casting, but are made in particular by mechanical processing such as grooving.
  • Profiltechniksvorsprünge the bandage surface can still be armored by hard-facing welding beads 14 or by other hard materials.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Rolls And Other Rotary Bodies (AREA)

Claims (4)

  1. Garniture annulaire à surface résistant à l'usure pour un rouleau presseur pour le traitement par pression de matière granuleuse, en particulier pour des rouleaux presseurs pour le broyage d'un lit de matières, caractérisé par les caractéristiques suivantes:
    a) le matériau de la garniture (10, 11) se compose de fonte à graphite sphéroïdal avec au moins les éléments d'alliage Ni et Mo et présente une structure bainitique avec de l'austénite résiduelle,
    b) les couches de bord (11) de la garniture annulaire (10) contiennent, pour produire une surface dure, de la martensite qui est sans cesse reformée par une charge de compression lors du fonctionnement du rouleau presseur,
    c) des creux espacés les uns des autres (12, 13) sont formés dans la surface extérieure de la garniture (10, 11) pour la protection autogène contre l'usure,
    dans laquelle des saillies de profilage de la surface de la garniture, situées entre les creux espacés (12, 13), sont encore blindées par des cordons de soudure de rechargement (14) composés de matières dures.
  2. Garniture annulaire selon la revendication 1, caractérisée en ce que les creux (12, 13) formés dans la surface extérieure de la garniture sont produits par meulage de rainures.
  3. Garniture annulaire selon la revendication 1, caractérisée en ce que la garniture (10) présente une épaisseur de paroi pouvant atteindre environ 500 mm et est frettée sur un corps de base de rouleau avec des tourillons.
  4. Procédé de fabrication d'une garniture annulaire de rouleau presseur pour la sollicitation par pression de matière granuleuse, en particulier de rouleaux presseurs pour le broyage d'un lit de matières, caractérisé par les caractéristiques suivantes:
    a) la garniture annulaire (10, 11) est moulée en fonte à graphite sphéroïdal avec au moins les éléments d'alliage Ni et Mo,
    b) le corps moulé acquiert une structure bainitique avec de l'austénite résiduelle par un traitement thermique qui suit auquel succède un refroidissement contrôlé,
    c) les couches de bord de la garniture annulaire (10, 11) sont sans cesse à nouveau durcies avec formation de martensite par une charge de compression de la surface extérieure de celle-ci,
    d) des creux (12, 13) espacés les uns des autres sont formés dans la surface extérieure de la garniture annulaire (10, 11), avant son utilisation dans la presse à rouleaux, par moulage et/ou par usinage mécanique, en particulier par meulage de rainures,
    dans lequel des saillies de profilage de la surface de la garniture, situées entre les creux espacés (12, 13), sont encore blindées par des cordons de soudure de rechargement (14) en matières dures.
EP05783028.3A 2004-09-09 2005-09-07 Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture Active EP1804973B9 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102004043562.6A DE102004043562B4 (de) 2004-09-09 2004-09-09 Presswalzen-Ringbandage und Verfahren zu ihrer Herstellung
PCT/EP2005/009574 WO2006027215A1 (fr) 2004-09-09 2005-09-07 Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture

Publications (3)

Publication Number Publication Date
EP1804973A1 EP1804973A1 (fr) 2007-07-11
EP1804973B1 true EP1804973B1 (fr) 2013-06-05
EP1804973B9 EP1804973B9 (fr) 2016-09-21

Family

ID=35197969

Family Applications (1)

Application Number Title Priority Date Filing Date
EP05783028.3A Active EP1804973B9 (fr) 2004-09-09 2005-09-07 Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture

Country Status (6)

Country Link
US (2) US7832671B2 (fr)
EP (1) EP1804973B9 (fr)
CN (1) CN100581652C (fr)
DE (1) DE102004043562B4 (fr)
DK (1) DK1804973T3 (fr)
WO (1) WO2006027215A1 (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102007007276B4 (de) * 2007-02-14 2019-12-05 Khd Humboldt Wedag Gmbh Panzerung der Oberflächen von Rollenpressen-Presswalzen
DE102010024221A1 (de) 2010-06-18 2011-12-22 Khd Humboldt Wedag Gmbh Profilierte Bandage für eine Rollenpresse
DE202012007144U1 (de) 2012-06-19 2012-08-03 Khd Humboldt Wedag Gmbh Profilierte Bandage für eine Rollenpresse
DE102012106527B4 (de) * 2012-07-18 2016-01-21 Maschinenfabrik Köppern GmbH & Co KG Presswalze für eine Walzenpresse
CN102962652B (zh) * 2012-12-17 2015-03-11 重庆京庆重型机械股份有限公司 一种辊压机辊套的加工方法
CN102974421A (zh) * 2012-12-17 2013-03-20 重庆京庆重型机械股份有限公司 辊压机辊套
DE102014006427A1 (de) * 2014-05-02 2015-11-05 Khd Humboldt Wedag Gmbh Walze mit Verschleißschutzschicht für eine Rollenpresse
DE102018111621B4 (de) * 2018-05-15 2020-01-23 Helmut Prihoda Verfahren zur Verbesserung der Produktivität von Mahlanlagen
CN110154277B (zh) * 2019-07-08 2020-06-19 霍昀 一种废旧轮胎破碎刀辊及其多功能破碎机

Family Cites Families (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2771358A (en) * 1954-07-16 1956-11-20 Int Nickel Co Machine elements for crushers
CN85102110B (zh) * 1985-04-03 1987-11-04 铁道部大连机车车辆工厂 具有奥氏体—贝氏体的球墨铸铁和制造方法
DE4132474A1 (de) * 1991-05-28 1992-12-03 Kloeckner Humboldt Deutz Ag Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen
DE4210395A1 (de) 1992-03-30 1993-10-07 Krupp Polysius Ag Walzenmühle
CN1182142A (zh) * 1996-11-07 1998-05-20 鞍山钢铁集团公司 一种耐磨铸钢
DE19750144A1 (de) * 1997-11-12 1999-06-02 Krupp Polysius Ag Verfahren zur Herstellung einer Mahlwalze

Also Published As

Publication number Publication date
DE102004043562A1 (de) 2006-03-30
CN101039752A (zh) 2007-09-19
US20110061773A1 (en) 2011-03-17
EP1804973B9 (fr) 2016-09-21
DE102004043562B4 (de) 2016-09-29
WO2006027215A1 (fr) 2006-03-16
DK1804973T3 (da) 2013-09-08
US7832671B2 (en) 2010-11-16
EP1804973A1 (fr) 2007-07-11
CN100581652C (zh) 2010-01-20
US8388772B2 (en) 2013-03-05
US20080191074A1 (en) 2008-08-14

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