EP0916407B1 - Procédé de fabrication d'un rouleau broyeur - Google Patents

Procédé de fabrication d'un rouleau broyeur Download PDF

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Publication number
EP0916407B1
EP0916407B1 EP98120943A EP98120943A EP0916407B1 EP 0916407 B1 EP0916407 B1 EP 0916407B1 EP 98120943 A EP98120943 A EP 98120943A EP 98120943 A EP98120943 A EP 98120943A EP 0916407 B1 EP0916407 B1 EP 0916407B1
Authority
EP
European Patent Office
Prior art keywords
roll
hard
tyre
build
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
EP0916407B2 (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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First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=7848513&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP0916407(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
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 method for manufacturing a grinding roller for the comminution of brittle regrinds in a material bed roller mill, according to the Preamble of claim 1.
  • roller surfaces are straight very much with the brittle and abrasive grinding materials mentioned high demands both with regard to abrasion (Wear) and exposed to the pressures the roller shell will be used here every Grinding roller made of accordingly resistant and especially made of wear-resistant material.
  • roller materials mainly include chilled cast iron as well Alloyed hard materials by cladding be applied to the base material. At this Crushing in a material bed roller mill causes this occurring on the roll surfaces or roll shells high pressures that after appropriate running or Operating times of the roller material, especially those of today mostly used surfaced roll shells tired especially near the surface, apart from the sometimes considerable wear. This material fatigue leads to the The service lives of these grinding rollers are limited; leave with it the roller shells also no longer regenerate sensibly.
  • EP-B-563 564 there is therefore a material bed roller mill proposed to be used in the grinding rollers which according to the preamble of claim 1 are manufactured, i.e. which in particular a roller shell from a wear-resistant chilled cast iron, at which is among others from a highly wear-resistant bainitic Cast material can act.
  • the special thing about this known grinding rollers is that on the Surface of the chill roll shell of each grinding roller Profiles in the form of welding beads made of wear-resistant Cladding material applied are. It has been shown that by this production the milling castors made of chilled cast iron with build-up welding a significantly higher compressive strength and thus longer life in terms of wear than with the above-mentioned weld-welded grinding rollers can be achieved.
  • the chilled cast iron or the chilled cast iron material is a relative has brittle behavior.
  • the latter can especially in the case of relatively intermittent or striking Shredding work or stress on the grinding rollers, as is especially the case with very brittle and large pieces Regrind is often the case, cause the hard cast material breaks spontaneously.
  • it can already undesirable during the manufacture of the grinding rollers Breaks come; this can already happen with oneshrinking the roll cover onto the roll base due to shrinkage stresses happen.
  • the invention is therefore based on the object Method of the prerequisite in the preamble of claim 1 Way to further improve in such a way that still relatively high wear and pressure resistance particularly high operational reliability of the roll shell (and thus the entire grinding roller) against breakage can be achieved.
  • the roll shell consists of a ductile bainitic nodular cast iron with an elongation at break of 0.1 to 2.5% and a compressive strength of 1,000 to 1,800 MPa is produced, with a preferred maximum value of the aforementioned elongation at break is 2.0%.
  • an elongation at break of the cast material and thus the roll shell of at least 0.5% i.e. an elongation at break from 0.5 to 2.5%, particularly preferably from 0.5 to 2.0%, and a compressive strength of 1,200 to 1,600 MPa selected.
  • roller jacket has a hardness of 42 to 55 HRc, preferably 45 to 50 HRc, i.e. Rockwell hardness.
  • a grinding roller are examples of typical below Called compositions.
  • the roll shell i.e. for the real one Sheath body
  • the hard overlay welding material is preferably one highly wear-resistant chrome-carbon alloy used, in addition to chrome carbides there are also special carbides form.
  • the hard material can also thanks to highly wear-resistant tungsten carbide surfacing be formed.
  • the roll shell can affect the material properties of ductile bainitic ductile iron by controlled cooling and / or heat treatment of the roll shell in the desired or required Way to be set.
  • the invention manufactured grinding roller in a constructive or structural In terms of general terms and shape can be carried out in the same way as it is with Gutbett roll mills well known and also essentially is described in the mentioned EP-B 563 564.
  • this grinding roller generally in two parts from the roller body (sometimes also as roller shaft referred to) and firmly attached to it Roll jacket exists.
  • the roller body can manufactured in the usual way as a forged component be on which the roller shell, for example, by a removable shrink fit firmly and reliably attached becomes.

Landscapes

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

Claims (11)

  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 le bandage de cylindre est réalisé en une fonte à graphite sphéroïdale bainitique ductile 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 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, 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 la revendication 1, caractérisé en ce que pour la fabrication du bandage de cylindre, on choisit une fonte à graphite sphéroïdale bainitique 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.
  11. Procédé selon l'une ou l'autre des revendications 1 et 10, caractérisé en ce que les propriétés de matériau de la fonte sphéroïdale 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 true EP0916407B1 (fr) 2002-04-03
EP0916407B2 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)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013104098A1 (de) 2013-04-23 2014-10-23 Thyssenkrupp Industrial Solutions Ag Vorrichtung zur Zerkleinerung von abrasiven Materialien

Families Citing this family (8)

* 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
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)

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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

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102013104098A1 (de) 2013-04-23 2014-10-23 Thyssenkrupp Industrial Solutions Ag Vorrichtung zur Zerkleinerung von abrasiven Materialien
WO2014173877A2 (fr) 2013-04-23 2014-10-30 Thyssenkrupp Industrial Solutions Ag Dispositif de broyage de matériaux abrasifs

Also Published As

Publication number Publication date
DK0916407T3 (da) 2002-07-29
ES2174373T5 (es) 2006-02-01
ES2174373T3 (es) 2002-11-01
US6203588B1 (en) 2001-03-20
DE19750144A1 (de) 1999-06-02
EP0916407A1 (fr) 1999-05-19
BR9804606A (pt) 1999-11-03
EP0916407B2 (fr) 2005-08-03
DK0916407T4 (da) 2005-12-12
DE59803601D1 (de) 2002-05-08
ZA9810026B (en) 1999-05-05

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