EP0916407B2 - Procédé de fabrication d'un rouleau broyeur - Google Patents

Procédé de fabrication d'un rouleau broyeur Download PDF

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Publication number
EP0916407B2
EP0916407B2 EP98120943A EP98120943A EP0916407B2 EP 0916407 B2 EP0916407 B2 EP 0916407B2 EP 98120943 A EP98120943 A EP 98120943A EP 98120943 A EP98120943 A EP 98120943A EP 0916407 B2 EP0916407 B2 EP 0916407B2
Authority
EP
European Patent Office
Prior art keywords
roll
hard
build
tyre
welding
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.)
Expired - Lifetime
Application number
EP98120943A
Other languages
German (de)
English (en)
Other versions
EP0916407A1 (fr
EP0916407B1 (fr
Inventor
Heinz Dipl.-Ing. Schröder
Helmut Dipl.-Ing. Lücke
Ludger Dr.-Ing. Rübbelke
Jürgen KRÜGER
Thomas Volk
Horst Herbst
Rainhard Dr. Laag
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.)
Schwaebische Huettenwerke Automotive GmbH
ThyssenKrupp Industrial Solutions AG
Original Assignee
Schwaebische Huettenwerke Automotive GmbH
Krupp Polysius 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
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Application filed by Schwaebische Huettenwerke Automotive GmbH, Krupp Polysius AG filed Critical Schwaebische Huettenwerke Automotive GmbH
Publication of EP0916407A1 publication Critical patent/EP0916407A1/fr
Application granted granted Critical
Publication of EP0916407B1 publication Critical patent/EP0916407B1/fr
Publication of EP0916407B2 publication Critical patent/EP0916407B2/fr
Anticipated expiration legal-status Critical
Expired - Lifetime 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 a process for the preparation a grinding roller for the comminution of brittle Grindings in a good bed roller mill, according to the preamble of claim 1.
  • EP-B-563 564 there is therefore a good-bed roller mill been proposed in the grinding rolls be used according to the preamble of claim 1, i. the particular a roll shell of a wear-resistant Have chilled casting, which u.a. from a highly wear-resistant bainitic cast material act can.
  • the special feature of these known grinding rollers is that on the surface of the chilled cast roll shell every grinding roller profiling in Form of weld beads made of wear-resistant hardfacing material are applied. It has Although shown by this production of the grinding rollers made of chilled cast iron with hardfacing a clear higher pressure resistance and thus longer service life Wear as in the above mentioned order-welded grinding rolls can be achieved can.
  • nodular cast iron by alloying can achieve high pressure resistance; he in terms of hardness, however, below that Hard cast material Ni-Hard 4 is located. Its wear resistance is therefore much lower than others Hartgußwerkstoffen.
  • Nodular cast iron has the advantage be weldable, so that the wear protection be applied over Hartlagenaufsch spaung can, with the elongation at break ductile iron higher than with other cast materials. Details for the elongation at break, the compressive strength or for the Alloy compositions are in this publication not included.
  • the invention is therefore based on the object a method as defined in the preamble of claim 1 presumed kind in the way to further improve that with still relatively high wear and pressure resistance a particularly high operational safety of the Roll mantle (and thus the whole grinding roller) opposite Fractures can be achieved.
  • a breaking elongation of the casting material and thus the roll mantle of at least 0.5%, So an elongation at break of 0.5 to 2.5%, especially preferably from 0.5 to 2.0%, and a compressive strength from 1,200 to 1,600 MPa.
  • the roll mantle first several complete additional layers of hard material applied by welding and to the utmost Additional layer of the surface profiling Hard material also by hardfacing to build.
  • a ductile bainitic Ductile cast iron from a casting alloy with - in % By weight - 3.0 - 3.5% carbon, 1.5 - 2.0% silicon, 0.3-0.4% manganese, 0.05% phosphorus, 1.5-4.0% nickel, 0.7-1.0% molybdenum and 0.04-0.07% magnesium selected, wherein in a preferred embodiment the proportion of silicon also 1.8 to 2.0 wt .-% can amount.
  • a hardfacing material is preferably a highly wear-resistant chrome-carbon alloy used in addition to chromium carbides to train special carbides.
  • the hard material can also by highly wear-resistant Tungsten carbide surfacing welds are formed.
  • the hardfacing material becomes by a hard alloy with - in% by weight - 5.0% carbon, 2.0% manganese, 1.5% Silicon, 22.0% chromium, 7.2% niobium and 0.5% vanadium educated.
  • the grinding roller and in particular the roll shell can the material properties of the ductile bainitic Ductile iron by controlled cooling and / or heat treatment of the roll mantle in the be set desired or required manner.
  • the invention manufactured grinding roller in constructive or structurally, as well as in their shape otherwise may be generally similar, such as it is well known in the case of good bed roller mills and also essentially in the cited EP-B 563 564 is described.
  • the roller body can be in the usual way as be prepared forged component, on which the roll shell for example, by a detachable Shrink fit is fixed firmly and reliably.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Pressure Vessels And Lids Thereof (AREA)
  • Solid Fuels And Fuel-Associated Substances (AREA)
  • Pistons, Piston Rings, And Cylinders (AREA)

Claims (10)

  1. Procédé de fabrication d'un cylindre broyeur pour le broyage de produits cassants à broyer dans un broyeur à cylindres à lit de matériau, dans lequel deux cylindres broyeurs en rotation en sens contraires sont pressés l'un contre l'autre avec haute pression, un bandage de cylindre étant appliqué fermement sur un corps de base de cylindre et ce bandage de cylindre étant réalisé en un matériau de fonderie bainitique hautement résistant à l'usure,
    caractérisé en ce que
    pour la fabrication du bandage de cylindre, on choisit une fonte sphéroïdale bainitique ductile en un alliage de fonte comportant - en pourcentage en poids - 3,0 à 3,5 % de carbone, 1,5 à 2,0 % de silicium, 0,3 à 0,4 % de manganèse, 0,05 % de phosphore, 1,5 à 4,0 % de nickel, 0,7 à 1,0 % de molybdène et 0,04 à 0,07 % de magnésium, et présentant un allongement à la rupture de 0,1 à 2,5 % et une résistance à la pression de 1.000 à 1.800 MPa.
  2. Procédé selon la revendication 1, caractérisé en ce qu'on choisit un allongement à la rupture du bandage de cylindre au moins de 0,5 % et une résistance à la pression de 1.200 à 1.600 MPa.
  3. Procédé selon la revendication 1, caractérisé en ce que le bandage de cylindre est réalisé avec une dureté de 42 à 55 HRc (dureté Rockwell).
  4. Procédé selon la revendication 1, caractérisé en ce qu'un profilage de surface est appliqué sur la surface périphérique extérieure du bandage de cylindre.
  5. Procédé selon la revendication 4, caractérisé en ce que le profilage de surface est formé par rechargement par soudure de matériau dur sur la surface périphérique extérieure du bandage de cylindre.
  6. Procédé selon la revendication 4, caractérisé en ce que sur la surface périphérique extérieure du bandage de cylindre, on applique tout d'abord plusieurs couches additionnelles complètes de matériau dur par rechargement par soudure et, sur la couche additionnelle la plus extérieure, les profilages de surface en matériau dur sont formés en matériau dur également par rechargement par soudure.
  7. Procédé selon l'une ou l'autre des revendications 5 et 6, caractérisé en ce que le matériau de rechargement dur par soudure utilisé est un alliage chrome-carbone hautement résistant à l'usure dans lequel des carbures spéciaux se forment en plus des carbures de chrome.
  8. Procédé selon la revendication 7, caractérisé en ce que le matériau de rechargement dur est formé par un alliage dur comportant - en pourcentage en poids - 5,0 % de carbone, 3,0 % de manganèse, environ 1,5 % de silicium, 22 % de chrome, 7,2 % de niobium et 0,5 % de vanadium.
  9. Procédé selon l'une ou l'autre des revendications 5 et 6, caractérisé en ce que le matériau dur est formé par des rechargements par soudure de carbure de tungstène hautement résistant à l'usure.
  10. Procédé selon l'une ou l'autre des revendications 1 et 10, caractérisé en ce que les propriétés de matériau de la fonte à graphite sphéroïdal bainitique sont réglées par refroidissement et/ou traitement thermique régulé du bandage de cylindre.
EP98120943A 1997-11-12 1998-11-04 Procédé de fabrication d'un rouleau broyeur Expired - Lifetime EP0916407B2 (fr)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE19750144A DE19750144A1 (de) 1997-11-12 1997-11-12 Verfahren zur Herstellung einer Mahlwalze
DE19750144 1997-11-12

Publications (3)

Publication Number Publication Date
EP0916407A1 EP0916407A1 (fr) 1999-05-19
EP0916407B1 EP0916407B1 (fr) 2002-04-03
EP0916407B2 true EP0916407B2 (fr) 2005-08-03

Family

ID=7848513

Family Applications (1)

Application Number Title Priority Date Filing Date
EP98120943A Expired - Lifetime EP0916407B2 (fr) 1997-11-12 1998-11-04 Procédé de fabrication d'un rouleau broyeur

Country Status (7)

Country Link
US (1) US6203588B1 (fr)
EP (1) EP0916407B2 (fr)
BR (1) BR9804606A (fr)
DE (2) DE19750144A1 (fr)
DK (1) DK0916407T4 (fr)
ES (1) ES2174373T5 (fr)
ZA (1) ZA9810026B (fr)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20060210061A1 (en) * 2003-07-17 2006-09-21 Ulrich Hardebusch Telephone handset and acoustic converter for one such telephone handset
DE102004043562B4 (de) * 2004-09-09 2016-09-29 Khd Humboldt Wedag Gmbh Presswalzen-Ringbandage und Verfahren zu ihrer Herstellung
DE102006008115A1 (de) * 2006-02-20 2007-08-30 Siemens Ag Mahlwerkzeug mit einer Beschichtung
US20100151268A1 (en) * 2008-12-11 2010-06-17 Flsmidth A/S Wear-resistant hard surfacing method and article
DE102010024221A1 (de) * 2010-06-18 2011-12-22 Khd Humboldt Wedag Gmbh Profilierte Bandage für eine Rollenpresse
JP5542104B2 (ja) * 2011-08-09 2014-07-09 住友ゴム工業株式会社 タイヤの耐摩耗性能を評価する方法
US9375718B2 (en) 2011-10-18 2016-06-28 Diamond Power International, Inc. Shaft-to-roller attachment for clinker grinder roller
DE102013104098A1 (de) 2013-04-23 2014-10-23 Thyssenkrupp Industrial Solutions Ag Vorrichtung zur Zerkleinerung von abrasiven Materialien
CN103658551A (zh) * 2013-11-27 2014-03-26 湖州中联机械制造有限公司 一种大型水泥磨机磨辊的制造方法

Family Cites Families (15)

* 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
DE1120242B (de) * 1959-06-24 1961-12-21 Hoesch Ag Verfahren zum Aufbringen verschleissfester Schichten auf Walzen u. dgl.
DE3116227C2 (de) * 1981-04-23 1983-12-01 Kubota Ltd., Osaka Verbundguß-Arbeitswalze und Verfahren zu ihrer Herstellung
US4396442A (en) * 1981-05-15 1983-08-02 Kubota Ltd. Ductile cast iron roll and a manufacturing method thereof
FR2522291A1 (fr) * 1982-03-01 1983-09-02 Pont A Mousson Tube centrifuge en fonte a graphite spheroidal et son procede de fabrication
US4541878A (en) * 1982-12-02 1985-09-17 Horst Muhlberger Cast iron with spheroidal graphite and austenitic-bainitic mixed structure
US4484953A (en) * 1983-01-24 1984-11-27 Ford Motor Company Method of making ductile cast iron with improved strength
FR2575683B1 (fr) * 1985-01-04 1987-01-30 Pont A Mousson Procede et installation pour la fabrication continue de tuyaux en fonte a graphite spheroidal a structure controlee
US4880477A (en) * 1988-06-14 1989-11-14 Textron, Inc. Process of making an austempered ductile iron article
DE3926232A1 (de) * 1988-09-22 1990-03-29 Kloeckner Humboldt Deutz Ag Verschleissfeste walzenbeschichtung fuer die walzen von walzenpressen und verfahren zum aufbauen der walzenbeschichtung
JP2709103B2 (ja) * 1988-11-28 1998-02-04 日本ピストンリング株式会社 ロッカーアーム
DE3843173A1 (de) * 1988-12-22 1990-07-05 Kloeckner Humboldt Deutz Ag Verschleissfeste oberflaechenpanzerung fuer die walzen von walzenmaschinen, insbesondere hochdruck-walzenpressen
DE4134134A1 (de) * 1991-10-15 1993-04-22 Castolin Sa Verfahren zum beschichten von teilen aus gusseisen und dessen verwendung
DE4210395A1 (de) * 1992-03-30 1993-10-07 Krupp Polysius Ag Walzenmühle
SE504707C2 (sv) * 1995-07-14 1997-04-07 Sandvik Ab Kompositvalls med hårdmetall och gjutjärn

Also Published As

Publication number Publication date
DE19750144A1 (de) 1999-06-02
EP0916407A1 (fr) 1999-05-19
DK0916407T4 (da) 2005-12-12
ZA9810026B (en) 1999-05-05
ES2174373T5 (es) 2006-02-01
BR9804606A (pt) 1999-11-03
ES2174373T3 (es) 2002-11-01
DE59803601D1 (de) 2002-05-08
EP0916407B1 (fr) 2002-04-03
US6203588B1 (en) 2001-03-20
DK0916407T3 (da) 2002-07-29

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