EP0418497A1 - Wear-resistant surface coating for rollers of roller mills, especially high pressure roller mills - Google Patents

Wear-resistant surface coating for rollers of roller mills, especially high pressure roller mills Download PDF

Info

Publication number
EP0418497A1
EP0418497A1 EP90113929A EP90113929A EP0418497A1 EP 0418497 A1 EP0418497 A1 EP 0418497A1 EP 90113929 A EP90113929 A EP 90113929A EP 90113929 A EP90113929 A EP 90113929A EP 0418497 A1 EP0418497 A1 EP 0418497A1
Authority
EP
European Patent Office
Prior art keywords
roller
armor
welded
roller mills
roll
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Withdrawn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
EP90113929A
Other languages
German (de)
French (fr)
Inventor
Günter Keller
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.)
Kloeckner Humboldt Deutz AG
Original Assignee
Kloeckner Humboldt Deutz 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 Kloeckner Humboldt Deutz AG filed Critical Kloeckner Humboldt Deutz AG
Publication of EP0418497A1 publication Critical patent/EP0418497A1/en
Withdrawn legal-status Critical Current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 a wear-resistant surface armor for the rollers of roller machines, in particular high-pressure roller presses for pressure comminution of granular material.
  • roller crushers and roller mills In the case of roller crushers and roller mills, brittle ground material is drawn into the roller gap and subjected to pressure reduction there. Also known is the so-called material bed comminution in the nip of a high-pressure roller press, in which the individual particles of the ground material drawn in by friction into the nip are crushed in a material bed, ie in a bed of material compressed between the two roller surfaces when an extremely high pressure is applied (EP -PS 0 084 383). It is understood that the roller surfaces are subjected to extremely high stress and wear. It is therefore known to armor the roller surface by welding weld layers of hard metallic materials onto the roller base body, or by using the roller base body one-piece or multi-piece wear-resistant jacket made of cast or rolled material. If the roller armor is welded on, it has so far been built up by welding adjacent ring layers or by an endless spiral welding.
  • the invention has for its object to provide for the rollers of roller machines, in particular high-pressure roller presses, a technically simple, wear-resistant armor which, despite the profiling and therefore good retraction capacity, also has a long service life.
  • roller armor according to the invention when the armor is built up, at least the outermost armored welding layer is no longer welded on by annularly adjacent welding beads or by an endless welding spiral bead, but by welding beads lying transversely thereto is produced, which are arranged horizontally next to each other along the roll surface lines.
  • the cross-weld beads of the roll armor according to the invention can be welded on without a distance from one another or at a distance of less than about 40 mm from one another, so that the spaces between the cross-weld beads used as roll profiling, which are unfavorable for roll wear, are practically eliminated.
  • the last or outermost welded-on armored layer consists of the cross-weld beads arranged horizontally next to one another along the roller surface lines, so these make the additional manufacturing step of welding z.
  • V-shaped roll profiles unnecessary. It is no problem to weld these single-layer or multi-layer cross-weld beads onto the inner layers of the roller armor, even if the inner layers consist of single-layer or multi-layer radially welded ring layers or spiral welds.
  • the outermost roll armor layer produced in a welding layer or in a plurality of welding layers lying one above the other by cross-welding beads can have a thickness of up to approximately 4 mm.
  • the roll armor produced by the cross-welding beads protruding higher at several points distributed over the roll circumference than at the other roll circumference points.
  • the material of the cross weld beads can consist of a metallic alloy using special carbide and nitride formers. Such a material is e.g. B. described in German patent application P 39 26 232.4.
  • the armor layers, or at least the cross-weld beads which form the last or outermost weld layer are welded on by submerged arc filler welding.
  • the alloy components are in powder form in a z. B. filled from pure iron flat hollow band and the actual alloy itself only occurs during the welding process.
  • the filler metal overlay welding achieves an even distribution of the armor material alloy and an even weld bead build-up.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)

Abstract

In order to provide a wear-resistance surface coating for the rollers of roller mills, especially high pressure roller mills for material bed comminution of granular material, which surface coating is simple in terms of production technology and despite profiling and therefore good drawing-in capacity also has a high standing time capacity, according to the invention a roller surface coating is proposed in which at least the outermost layer consists of transverse welding beads which are welded on one next to the other horizontally along roller generating lines without spacing from one another or only with a small spacing from one another.

Description

Die Erfindung betrifft eine verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-­Walzenpressen zur Druckzerkleinerung körnigen Gutes.The invention relates to a wear-resistant surface armor for the rollers of roller machines, in particular high-pressure roller presses for pressure comminution of granular material.

Bei Walzenbrechern und Walzenmühlen wird sprödes Mahlgut in den Walzenspalt eingezogen und dort einer Druckzerkleinerung unter­worfen. Bekannt ist auch die sogenannte Gutbettzerkleinerung im Walzenspalt einer Hochdruck-Walzenpresse, bei der die einzelnen Partikel des durch Reibung in den Walzenspalt eingezogenen Mahl­gutes in einem Gutbett, d. h. in einer zwischen den beiden Wal­zenoberflächen zusammengedrückten Materialschüttung bei Anwendung eines extrem hohen Druckes gegenseitig zerquetscht werden (EP-PS 0 084 383). Es versteht sich, daß dabei die Walzenoberflä­chen einer außerordentlich hohen Beanspruchung und einem hohen Verschleiß ausgesetzt sind. Es ist daher bekannt, die Walzenober­fläche dadurch zu panzern, indem man auf den Walzengrundkörper Schweißlagen aus harten metallischen Werkstof­fen aufschweißt, oder indem man mit dem Walzengrundkörper einen einteiligen oder mehrteiligen verschleißfesten Mantel aus gegos­senem oder gewalztem Werkstoff verbindet. Ist die Walzenpanzerung aufgeschweißt, wird sie bisher durch Aufschweißen von nebeneinan­derliegenden Ringlagen oder durch eine endlose spiralförmige Auf­schweißung aufgebaut.In the case of roller crushers and roller mills, brittle ground material is drawn into the roller gap and subjected to pressure reduction there. Also known is the so-called material bed comminution in the nip of a high-pressure roller press, in which the individual particles of the ground material drawn in by friction into the nip are crushed in a material bed, ie in a bed of material compressed between the two roller surfaces when an extremely high pressure is applied (EP -PS 0 084 383). It is understood that the roller surfaces are subjected to extremely high stress and wear. It is therefore known to armor the roller surface by welding weld layers of hard metallic materials onto the roller base body, or by using the roller base body one-piece or multi-piece wear-resistant jacket made of cast or rolled material. If the roller armor is welded on, it has so far been built up by welding adjacent ring layers or by an endless spiral welding.

Um das Guteinzugsvermögen der Pressenwalzen, die das Gut durch Reibung in den Walzenspalt einziehen und verdichten müssen, zu verbessern, ist es bekannt, den gepanzerten Walzenmantel auf seiner zylindrischen Oberfläche in einem zusätzlichen Fertigungs­schritt mit einer vorspringenden Profilierung in Gestalt z. B. V-­förmig angeordneter Schweißraupen zu versehen. Es hat sich aber gezeigt, daß die Walzenoberfläche durch Entstehung muldenförmiger Auswaschungen in den Bereichen zwischen den mit Abstand voneinan­der aufgeschweißten Profilierungs-Schweißraupen verhältnismäßig schnell verschleißt.In order to improve the material intake capacity of the press rolls, which have to pull the material by friction into the nip and compress it, it is known to coat the armored roll shell on its cylindrical surface in an additional manufacturing step with a protruding profile in the shape of e.g. B. V-shaped welding beads. However, it has been shown that the roll surface wears relatively quickly due to the formation of trough-shaped washouts in the areas between the profiled welding beads welded on at a distance from one another.

Der Erfindung liegt die Aufgabe zugrunde, für die Walzen von Wal­zenmaschinen, insbesondere von Hochdruck-Walzenpressen, eine fer­tigungstechnisch einfache verschleißfeste Panzerung zu schaffen, die trotz Profilierung und daher guten Guteinzugsvermögens auch ein hohes Standzeitvermögen aufweist.The invention has for its object to provide for the rollers of roller machines, in particular high-pressure roller presses, a technically simple, wear-resistant armor which, despite the profiling and therefore good retraction capacity, also has a long service life.

Diese Aufgabe wird gemäß der Erfindung mit den Maßnahmen des Kennzeichnungsteils des Anspruchs 1 gelöst.This object is achieved according to the invention with the measures of the characterizing part of claim 1.

Charakteristisch für die erfindungsgemäße Walzenpanzerung ist, daß beim Aufbau der Panzerung wenigstens die äußerste Panzer­schweißlage nicht mehr durch ringförmig nebeneinanderliegende Schweißraupen oder durch eine endlose Aufschweißspiralraupe auf­geschweißt wird, sondern durch quer dazu liegende Schweißraupen hergestellt wird, die horizontal längs Walzenmantellinien neben­einander angeordnet sind. Die Querschweißraupen der erfindungs­gemäßen Walzenpanzerung können ohne Abstand voneinander, oder mit einem Abstand kleiner etwa 40 mm voneinander aufgeschweißt sein, so daß die für den Walzenverschleiß ungünstigen Zwischenräume zwischen den als Walzenprofilierung dienenden Querschweißraupen praktisch entfallen. Selbst bei ohne Abstand voneinander aufge­schweißten Querschweißraupen entsteht durch die natürliche Abrun­dung der Schweißraupen in Walzenquerrichtung eine Walzenprofilie­rung, die das Guteinzugsvermögen etwa gegenüber glatten Walzen erheblich verbessert und die gleichzeitig ein hohes Standzeitver­mögen aufweist. Besteht beim Aufbau der erfindungsgemäßen Walzen­panzerung die letzte bzw. äußerste aufgeschweißte Panzerlage, wie erfindungsgemäß vorgeschlagen, aus den horizontal längs der Wal­zenmantellinien nebeneinander angeordneten Querschweißraupen, so machen diese den bisher notwendig gewesenen zusätzlichen Ferti­gungsschritt des Aufschweißens von z. B. V-förmiger Walzenprofi­lierungen überflüssig. Dabei macht es keine Schwierigkeiten, diese einlagigen oder auch mehrlagigen Querschweißraupen auf die inneren Schichten der Walzenpanzerung aufzuschweißen, selbst wenn die inneren Schichten aus einlagigen oder mehrlagigen radial auf­geschweißten Ringlagen oder spiralförmigen Aufschweißungen beste­hen.It is characteristic of the roller armor according to the invention that when the armor is built up, at least the outermost armored welding layer is no longer welded on by annularly adjacent welding beads or by an endless welding spiral bead, but by welding beads lying transversely thereto is produced, which are arranged horizontally next to each other along the roll surface lines. The cross-weld beads of the roll armor according to the invention can be welded on without a distance from one another or at a distance of less than about 40 mm from one another, so that the spaces between the cross-weld beads used as roll profiling, which are unfavorable for roll wear, are practically eliminated. Even with cross-weld beads welded on without spacing, the natural rounding of the weld beads in the cross-roll direction results in roll profiling which considerably improves the good pull-in capacity compared to smooth rolls and which at the same time has a long service life. When building the roller armor according to the invention, the last or outermost welded-on armored layer, as proposed according to the invention, consists of the cross-weld beads arranged horizontally next to one another along the roller surface lines, so these make the additional manufacturing step of welding z. B. V-shaped roll profiles unnecessary. It is no problem to weld these single-layer or multi-layer cross-weld beads onto the inner layers of the roller armor, even if the inner layers consist of single-layer or multi-layer radially welded ring layers or spiral welds.

Die in einer Schweißlage oder in mehreren übereinanderliegenden Schweißlagen durch Querschweißraupen hergestellte äußerste Wal­zenpanzerschicht kann eine Dicke bis etwa ca. 4 mm aufweisen. Es besteht auch die Möglichkeit, die durch die Querschweißraupen hergestellte Walzenpanzerung an mehreren über den Walzenumfang verteilten Stellen höher vorspringend auszubilden als an den übrigen Walzenumfangsstellen. Außerdem besteht die Möglichkeit, durch Aufschweißen von horizontal liegenden Querschweißraupen und von quer dazu liegenden ringförmigen Schweißraupen eine netzför­mige Walzenprofilierung zu erzeugen mit einer Netzmaschenweite, die vorzugsweise kleiner ca. 40 mm beträgt.The outermost roll armor layer produced in a welding layer or in a plurality of welding layers lying one above the other by cross-welding beads can have a thickness of up to approximately 4 mm. There is also the possibility of making the roll armor produced by the cross-welding beads protruding higher at several points distributed over the roll circumference than at the other roll circumference points. There is also the possibility of welding horizontally lying cross-weld beads and to produce a net-shaped roll profile with annular mesh beads lying transversely to it with a net mesh width which is preferably less than approximately 40 mm.

Der Werkstoff der Querschweißraupen kann aus einer metallischen Legierung unter Verwendung von Sonderkarbid- und Nitridbildnern bestehen. Ein solcher Werkstoff ist z. B. in der deutschen Patentanmeldung P 39 26 232.4 beschrieben. Bei der erfindungs­gemäßen Oberflächenpanzerung sind die Panzerschichten, jedenfalls die die letzte bzw. äußerste Schweißlage bildenden Querschweiß­raupen durch Unterpulver-Füllbandauftragsschweißung aufge­schweißt. Beim Füllbandauftragsschweißen sind die Legierungsbe­standteile in Pulverform in ein z. B. aus Reineisen bestehendes flaches Hohlband gefüllt und die eigentliche Legierung selbst entsteht erst beim Schweißprozeß. Durch die Füllbandauftrags­schweißung werden eine gleichmäßige Verteilung der Panzerwerk­stofflegierung und ein gleichmäßiger Schweißraupenaufbau erreicht.The material of the cross weld beads can consist of a metallic alloy using special carbide and nitride formers. Such a material is e.g. B. described in German patent application P 39 26 232.4. In the surface armor according to the invention, the armor layers, or at least the cross-weld beads which form the last or outermost weld layer, are welded on by submerged arc filler welding. When filling filler welding, the alloy components are in powder form in a z. B. filled from pure iron flat hollow band and the actual alloy itself only occurs during the welding process. The filler metal overlay welding achieves an even distribution of the armor material alloy and an even weld bead build-up.

Claims (5)

1. Verschleißfeste Oberflächenpanzerung für die Walzen von Wal­zenmaschinen, insbesondere von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes, dadurch gekennzeichnet, daß wenigstens die äußerste Schicht der Panzerung aus Schweißraupen besteht, die horizontal längs Walzenmantelli­nien nebeneinander aufgeschweißt sind.1. Wear-resistant surface armor for the rollers of roller machines, in particular high-pressure roller presses for pressure comminution of granular material, characterized in that at least the outermost layer of the armor consists of welding beads which are welded horizontally along the roller surface lines next to one another. 2. Walzenpanzerung nach Anspruch 1, dadurch gekennzeichnet, daß die Querschweißraupen der Walzenpanzerung ohne Abstand oder mit einem Abstand kleiner etwa 40 mm voneinander aufge­schweißt sind.2. Roll armor according to claim 1, characterized in that the transverse welding beads of the roll armor are welded on from one another without a distance or at a distance of less than approximately 40 mm. 3. Walzenpanzerung nach Anspruch 1, dadurch gekennzeichnet, daß der Werkstoff der Querschweißraupen aus einer metallischen Legierung mit Hartstoffen im Gefüge, z. B. Karbiden und/oder Sonderkarbiden, besteht.3. Roll armor according to claim 1, characterized in that the material of the cross weld beads made of a metallic alloy with hard materials in the structure, for. B. carbides and / or special carbides. 4. Walzenpanzerung nach Anspruch 1, dadurch gekennzeichnet, daß die inneren Schichten der Walzenpanzerung jeweils aus neben­einanderliegenden aufgeschweißten Ringlagen oder aus einer endlosen spiralförmigen Aufschweißung bestehen.4. Roller armor according to claim 1, characterized in that the inner layers of the roller armor each consist of adjacent welded ring layers or of an endless spiral weld. 5. Walzenpanzerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß die Querschweißraupen durch Unterpulver-­Füllbandauftragsschweißung aufgeschweißt sind.5. roll armor according to one of claims 1 to 3, characterized in that the cross-weld beads are welded by submerged filler filler.
EP90113929A 1989-08-16 1990-07-20 Wear-resistant surface coating for rollers of roller mills, especially high pressure roller mills Withdrawn EP0418497A1 (en)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE3926883A DE3926883A1 (en) 1989-08-16 1989-08-16 WEAR-RESISTANT SURFACE ARMORING FOR THE ROLLS OF ROLLING MACHINES, ESPECIALLY HIGH PRESSURE ROLLING PRESSES
DE3926883 1989-08-16

Publications (1)

Publication Number Publication Date
EP0418497A1 true EP0418497A1 (en) 1991-03-27

Family

ID=6387124

Family Applications (1)

Application Number Title Priority Date Filing Date
EP90113929A Withdrawn EP0418497A1 (en) 1989-08-16 1990-07-20 Wear-resistant surface coating for rollers of roller mills, especially high pressure roller mills

Country Status (3)

Country Link
US (1) US5165613A (en)
EP (1) EP0418497A1 (en)
DE (1) DE3926883A1 (en)

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563564A2 (en) * 1992-03-30 1993-10-06 Krupp Polysius Ag Roller mill
EP0634217A1 (en) * 1993-07-17 1995-01-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Wear-resistant surface coating for rollers of high pressure roller mills and procedure for the production of such a coating

Families Citing this family (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE4032615C2 (en) * 1990-10-15 1994-12-01 Kloeckner Humboldt Deutz Ag Method and device for applying wear-resistant armor to the roller end faces of roller presses
DE4226158C2 (en) * 1992-08-07 2003-04-10 Kloeckner Humboldt Wedag Process and plant for pressure treatment of granular goods
DE4228058C2 (en) * 1992-08-24 1995-04-20 Kloeckner Humboldt Deutz Ag Plant and method for pressure treatment of granular goods
US5935496A (en) * 1993-04-29 1999-08-10 Morton International, Inc. Salt pelletizing method
WO1995003126A1 (en) * 1993-07-20 1995-02-02 Maschinenfabrik Köppern Gmbh & Co. Kg Roller presses, in particular for crushing strongly abrasive substances
US5516053A (en) * 1993-10-07 1996-05-14 Hannu; Donald W. Welded metal hardfacing pattern for cone crusher surfaces
DE19646030A1 (en) * 1996-11-08 1998-05-14 Deutz Ag Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods
DE19702161A1 (en) * 1997-01-22 1998-07-23 Krupp Polysius Ag Roll construction e.g. for mill or press
AU2004200707C1 (en) * 1997-02-10 2006-07-06 The Track Shop Pty Ltd Abrasion Resistant Surface Coatings and Method of Forming Same
US6280370B1 (en) * 1997-02-10 2001-08-28 The Track Shop Pty Ltd. Abrasion resistant surface coatings and method of forming same
DE19738228A1 (en) * 1997-09-02 1999-03-04 Kloeckner Humboldt Wedag Process for recycling grinding brittle material and grinding plant for this
EP3154699B1 (en) * 2014-06-10 2018-07-18 FLSmidth A/S Wear-resistant roller

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120242B (en) * 1959-06-24 1961-12-21 Hoesch Ag Process for applying wear-resistant layers to rollers u. like
US3339055A (en) * 1966-06-02 1967-08-29 Kenneth G Carter Roll crusher rebuilder
DE3703459A1 (en) * 1987-02-05 1988-08-18 Kloeckner Humboldt Deutz Ag Profiles at outer edge of counter-rotating rolls - are used to urge material inwards during compaction or crushing of solids
DE3926232A1 (en) * 1988-09-22 1990-03-29 Kloeckner Humboldt Deutz Ag WEAR-RESISTANT ROLL COATING FOR THE ROLLERS OF ROLLING PRESSES AND METHOD FOR CONSTRUCTING THE ROLLING COATING

Family Cites Families (12)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CA616189A (en) * 1961-03-14 Simmonds Aerocessories Limited Cutting or abrading tool
US2219085A (en) * 1938-09-01 1940-10-22 Charles G Watson Method of covering rollers
US2793585A (en) * 1953-06-26 1957-05-28 American Optical Corp Embossing dies and method of making same
SU425643A1 (en) * 1972-07-25 1974-04-30 DEVICE FOR CUTTING WOOD
DE2446188C3 (en) * 1974-09-27 1983-11-24 Heidelberger Druckmaschinen Ag, 6900 Heidelberg Sheet-guiding outer surface of impression cylinders or sheet transfer cylinders in rotary offset printing machines
JPS51142482A (en) * 1975-05-23 1976-12-08 Sando Iron Works Co Ltd A process and apparatus for treatment of putrefactive wastes
DE2708053C3 (en) * 1977-02-24 1986-05-07 Schönert, Klaus, Prof. Dr.-Ing., 7500 Karlsruhe Process for fine and ultra-fine comminution of materials with brittle behavior
US4733446A (en) * 1982-06-24 1988-03-29 Kuroki Kogyosho Co., Ltd. Roll
DE3302176A1 (en) * 1983-01-24 1984-07-26 Klöckner-Humboldt-Deutz AG, 5000 Köln METHOD AND SYSTEM FOR CONTINUOUS PRESSURE REDUCTION OF SPROEDEN GROUND MATERIAL
US4856161A (en) * 1985-01-09 1989-08-15 Valmet Oy Press roll
US4996113A (en) * 1989-04-24 1991-02-26 Aluminum Company Of America Brightness enhancement with textured roll
DE4036040C2 (en) * 1990-02-22 2000-11-23 Deutz Ag Wear-resistant surface armor for the rollers of roller machines, especially high-pressure roller presses

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE1120242B (en) * 1959-06-24 1961-12-21 Hoesch Ag Process for applying wear-resistant layers to rollers u. like
US3339055A (en) * 1966-06-02 1967-08-29 Kenneth G Carter Roll crusher rebuilder
DE3703459A1 (en) * 1987-02-05 1988-08-18 Kloeckner Humboldt Deutz Ag Profiles at outer edge of counter-rotating rolls - are used to urge material inwards during compaction or crushing of solids
DE3926232A1 (en) * 1988-09-22 1990-03-29 Kloeckner Humboldt Deutz Ag WEAR-RESISTANT ROLL COATING FOR THE ROLLERS OF ROLLING PRESSES AND METHOD FOR CONSTRUCTING THE ROLLING COATING

Cited By (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0563564A2 (en) * 1992-03-30 1993-10-06 Krupp Polysius Ag Roller mill
EP0563564A3 (en) * 1992-03-30 1994-03-23 Krupp Polysius Ag
EP0634217A1 (en) * 1993-07-17 1995-01-18 Klöckner-Humboldt-Deutz Aktiengesellschaft Wear-resistant surface coating for rollers of high pressure roller mills and procedure for the production of such a coating

Also Published As

Publication number Publication date
DE3926883A1 (en) 1991-02-21
US5165613A (en) 1992-11-24

Similar Documents

Publication Publication Date Title
DE4036040C2 (en) Wear-resistant surface armor for the rollers of roller machines, especially high-pressure roller presses
EP0418497A1 (en) Wear-resistant surface coating for rollers of roller mills, especially high pressure roller mills
EP0563564B1 (en) Roller mill producing a bed of material
DE3787791T2 (en) Shredding elements for shredding machines.
DE102009050636B4 (en) Grinding roller and ring bandage for a grinding roller
EP0728523B1 (en) Roller, method for manufacturing a roller, and material bed roller mill
EP1804973B1 (en) Press roller annular casing and method for production thereof
DE4431563A1 (en) Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods (documents for P 44 44 337.4 given)
EP0634217B1 (en) Procedure for the manufacture of a wear-resistant surface coating for rollers of high pressure roller mills
DE102007007276B4 (en) Armoring of the surfaces of roller press rolls
EP0361172B1 (en) Wear-resistant roller coating for roller crushers, and method for building up said coating
WO1990006811A1 (en) Abrasion-resistant steel cladding for the roller surfaces of roller machines, in particular high-pressure roller presses
WO1990006178A1 (en) Non-wearing covering for the bearing surfaces of roller presses and a process for applying the covering
WO2003011465A1 (en) Surface profiling for the roll of a high-pressure item bed roller mill
DE4235298A1 (en) Grinding roll mfr. by build-up welding of anti-wear layer - with the anti-wear layer made up of separate blocks
EP0312744B1 (en) Internally cooled roll and method for manufacturing the same
DE19646030A1 (en) Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods
EP0872280A2 (en) Wear-resistant surface coating for rollers of roller mills for pressure milling of granular material
WO2005061143A1 (en) Reel driving device comprising driving rolls provided with a cast envelope
DE10014836A1 (en) Milling drum and process for its manufacture
DE9422077U1 (en) Roller press, especially for crushing highly abrasive substances
DE4017183A1 (en) Wear resistant armouring for rolls - using rings with interlocking edge profile
DD284611A5 (en) WEAR-RESISTANT ROLL COATING AND METHOD OF STRUCTURING ROLL COATING
WO2002094466A1 (en) Tool for extruding a composite profile from a light metal supporting profile and a profiled strip or bar
WO1999006226A1 (en) Rail wheel with bearing surface with optimised resistance to wear

Legal Events

Date Code Title Description
PUAI Public reference made under article 153(3) epc to a published international application that has entered the european phase

Free format text: ORIGINAL CODE: 0009012

AK Designated contracting states

Kind code of ref document: A1

Designated state(s): AT DE DK FR

17P Request for examination filed

Effective date: 19910607

RAP1 Party data changed (applicant data changed or rights of an application transferred)

Owner name: KLOECKNER-HUMBOLDT-DEUTZ AG

17Q First examination report despatched

Effective date: 19930924

STAA Information on the status of an ep patent application or granted ep patent

Free format text: STATUS: THE APPLICATION HAS BEEN WITHDRAWN

18W Application withdrawn

Withdrawal date: 19951104