EP1899071B1 - Method for reconditioning a used grinding roll - Google Patents
Method for reconditioning a used grinding roll Download PDFInfo
- Publication number
- EP1899071B1 EP1899071B1 EP07725497A EP07725497A EP1899071B1 EP 1899071 B1 EP1899071 B1 EP 1899071B1 EP 07725497 A EP07725497 A EP 07725497A EP 07725497 A EP07725497 A EP 07725497A EP 1899071 B1 EP1899071 B1 EP 1899071B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- holes
- profile
- members
- roller
- roller body
- 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.)
- Active
Links
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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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T29/00—Metal working
- Y10T29/49—Method of mechanical manufacture
- Y10T29/49544—Roller making
- Y10T29/49545—Repairing or servicing
Description
Die Erfindung betrifft ein Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze einer Hochdruck-Gutbettwalzenmühle entsprechend dem Oberbegriff des Anspruches 1 sowie eine Mahlwalze einer Hochdruck-Gutbettwalzenmühle entsprechend dem Oberbegriff des Anspruches 4.The invention relates to a method for reprocessing a used grinding roller of a high-pressure fine bed roller mill according to the preamble of
Mahlwalzen dieser Art sind beispielsweise durch die
Aus der
Trotzdem unterliegen im Laufe der Betriebszeit sowohl die vorstehenden Profilkörper als auch die Oberfläche des Walzenkörpers einem unvermeidlichen Verschleiß.Nevertheless, both the protruding profile body and the surface of the roller body are subject to unavoidable wear in the course of operation.
Durch die
Durch die Verwendung eines außerordentlich harten Grundwerkstoffes für die Oberfläche des Walzenkörpers wird zwar erreicht, dass diese Oberfläche etwa nur im gleichen Maße wie die vorstehenden Profilkörper verschleißt. Bei der Wiederaufarbeitung einer gebrauchten Mahlwalze dieser Art bedingt jedoch das vollständige Abdrehen der mit Bohrungen versehenen Oberfläche des Walzenkörpers wegen der hohen Härte des Oberflächenmateriales einen beträchtlichen Aufwand.By using an extremely hard base material for the surface of the roller body is indeed achieved that this surface wears out only about the same extent as the above profile body. In the reprocessing of a used grinding roller of this type, however, the complete turning off the provided with bores surface of the roll body due to the high hardness of the surface material a considerable effort.
Der Erfindung liegt daher die Aufgabe zu Grunde, ein Verfahren entsprechend dem Oberbegriff des Anspruches 1 so auszubilden, dass eine besonders zeit- und materialsparende und damit kostengünstige Wiederaufarbeitung einer gebrauchten Mahlwalze erreicht wird.The invention is therefore based on the object, a method according to the preamble of
Diese Aufgabe wird erfindungsgemäß durch die kennzeichnenden Merkmale des Anspruches 1 gelöst. Zweckmäßige Ausgestaltungen der Erfindung sind Gegenstand der Unteransprüche.This object is achieved by the characterizing features of
Eine Mahlwalze, die nach dem erfindungsgemäßen Verfahren wieder aufgearbeitet werden soll, wird (anders als die Mahlwalze gemäß
Um den auf diese Weise regenerierten Walzenkörper erneut mit vorstehenden Profilkörpern zu bestücken, können erfindungsgemäß
- a) die vorhandenen Bohrungen bis auf eine zur Aufnahme neuer Profilkörper ausreichende Tiefe vertieft werden,
- b) und/oder neue Bohrungen entsprechend einem neuen Bohrungsbild hergestellt werden,
- c) und/oder in die nunmehr kürzeren Bohrungen Profilkörper kürzerer Länge eingesetzt werden.
- a) the existing holes are deepened to a sufficient depth for receiving new profile body depth
- b) and / or new holes are made according to a new hole pattern,
- c) and / or in the now shorter holes profile body shorter length can be used.
Da die Oberfläche des Walzenkörpers vielfach in einzelnen Teilbereichen (etwa in der Mitte und an den Rändern der Breite des Walzenkörpers) einen unterschiedlichen Verschleißzustand aufweist, kann es im Einzelfall vorteilhaft sein, die drei vorstehend genannten Varianten der Neubestückung des Walzenkörpers mit Profilkörpern miteinander zu kombinieren.Since the surface of the roller body often has a different state of wear in individual subregions (approximately in the middle and at the edges of the width of the roller body), it may be advantageous in individual cases to combine the three abovementioned variants of re-fitting the roller body with profiled bodies.
In allen Fäden ergibt sich mit der erfindungsgemäßen Lösung eine sehr zeit- und materialsparende und damit kostengünstige Wiederaufarbeitung einer gebrauchten Mahlwalze.In all threads results with the solution according to the invention a very time and material-saving and thus cost-effective reprocessing of a used grinding roller.
Einige Ausführungsbeispiele der Erfindung sind in der Zeichnung dargestellt.Some embodiments of the invention are shown in the drawing.
Abweichend von der eben beschriebenen Verfahrensweise ist es erfindungsgemäß auch möglich, die verschlissene Oberfläche des Walzenkörpers nur teilweise (d.h. in einzelnen Flächenbereichen) bzw. um ein geringeres Maß abzudrehen und die vorhandenen Bohrungen bis auf eine solche Tiefe (neuer Durchmesser Dc) zu vertiefen, dass neue Profilkörper 2c eingesetzt werden können. Im Fall der
Bei dem in
Bei dem Ausführungsbeispiel der
Claims (4)
- Method for reconditioning a used grinding roller of a high-pressure material bed roller mill, containing a plurality of profile-members which are embedded in holes of the roller body with a portion of the length thereof and, with the remainder of the length thereof, project above the surface of the roller body, the profile-members having greater hardness than the surface of the roller body and the projecting portion of the profile-members and the surface of the roller body being at least partially worn,
characterised in that, after the worn profile-members have been removed, the worn surface of the roller body is turned at least in a part-region of the width of the roller body as far as a diameter which is greater than the diameter of the base of the holes provided, after whicha) the holes provided are extended as far as a depth which is sufficient to receive new profile-members,b) and/or new holes are produced in accordance with a new hole configuration,c) and/or shorter profile-members are introduced into the holes which are now shorter. - Method according to claim 1, characterised in that, after the worn surface has been turned, shorter profile-members and a spacer mass which is supported on the hole base and which acts as a longitudinal compensation means are introduced into the holes which are now shorter.
- Method according to claim 1, characterised in that, before the holes are extended, counter-sinking of the holes is carried out.
- Grinding roller of a high-pressure material bed roller mill, containing a plurality of profile-members which are embedded in holes of the roller body with a portion of the length thereof and, with the remainder of the length thereof, project above the surface of the roller body,
characterised in thata) the holes (4) have, in the new state of the grinding roller, a depth which is substantially greater than the minimum depth necessary for securely retaining profile-members (2e), with the space between the profile-members (2e) and the base of the holes (4) being filled by a spacer or pressure mass (6) until the first reconditioning of the grinding roller,b) and in that, in the reconditioned state of the worn roller body (1'), the spacer or pressure mass (6) is removed and new profile-members (2f) are introduced into the holes (4).
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102006028546A DE102006028546A1 (en) | 2006-06-21 | 2006-06-21 | Process for reprocessing a used grinding roller |
PCT/EP2007/004597 WO2007147474A1 (en) | 2006-06-21 | 2007-05-23 | Method for reconditioning a used grinding roll |
Publications (2)
Publication Number | Publication Date |
---|---|
EP1899071A1 EP1899071A1 (en) | 2008-03-19 |
EP1899071B1 true EP1899071B1 (en) | 2010-07-28 |
Family
ID=38294054
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP07725497A Active EP1899071B1 (en) | 2006-06-21 | 2007-05-23 | Method for reconditioning a used grinding roll |
Country Status (11)
Country | Link |
---|---|
US (1) | US20090178280A1 (en) |
EP (1) | EP1899071B1 (en) |
AU (1) | AU2007263387B2 (en) |
BR (1) | BRPI0708406A8 (en) |
CA (1) | CA2643959C (en) |
DE (2) | DE102006028546A1 (en) |
DK (1) | DK1899071T3 (en) |
PE (1) | PE20080623A1 (en) |
RU (1) | RU2427426C2 (en) |
WO (1) | WO2007147474A1 (en) |
ZA (1) | ZA200806297B (en) |
Families Citing this family (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007018090A1 (en) | 2007-04-17 | 2008-10-23 | Polysius Ag | Grinding roller and process for reprocessing |
DE102008014809A1 (en) * | 2008-03-18 | 2009-09-24 | Khd Humboldt Wedag Gmbh | Method for all-round renewal of a grinding roller |
DE102010010431B4 (en) | 2010-03-05 | 2012-04-05 | Thyssenkrupp Polysius Ag | Process for reprocessing the worn surface of grinding rolls of a good bed roll mill |
DE102010060600B3 (en) * | 2010-11-16 | 2012-03-01 | Polysius Ag | Method for treating used roll bodies of roller mill, involves introducing socket into extended turned cylindrical or conical bore by shrinking process and turning socket in order to centrally clamp roller body |
Family Cites Families (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4897519A (en) * | 1988-03-14 | 1990-01-30 | Westinghouse Electric Co. | More creep resistant turbine rotor, and procedures for repear welding of low alloy ferrous turbine components |
US4924581A (en) * | 1988-11-22 | 1990-05-15 | Techniair, Inc. | Turbine air seal repair process |
DE4132474A1 (en) | 1991-05-28 | 1992-12-03 | Kloeckner Humboldt Deutz Ag | WEAR-RESISTANT GRINDING ROLLER FOR USE IN ROLLING MACHINES, ESPECIALLY IN HIGH PRESSURE ROLLING PRESSES |
DE4321427A1 (en) * | 1992-07-09 | 1994-01-13 | Kloeckner Humboldt Deutz Ag | Wear-resistant roller for use in two-roller machines, especially in high-pressure roller presses |
US5764561A (en) * | 1995-11-16 | 1998-06-09 | Rohm Co., Ltd. | Ferroelectric memory devices and method of using ferroelectric capacitors |
DE19618143A1 (en) * | 1996-05-06 | 1997-11-13 | Krupp Polysius Ag | Roller mill grinding roller with projecting anchored pins for longer grinding time |
DE19638237A1 (en) * | 1996-09-19 | 1998-03-26 | Deutz Ag | Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods |
DE10335115A1 (en) * | 2003-07-31 | 2005-02-24 | Polysius Ag | grinding roll |
US7363707B2 (en) * | 2004-06-14 | 2008-04-29 | General Electric Company | Braze repair of shroud block seal teeth in a gas turbine engine |
DE102007012102A1 (en) * | 2007-03-13 | 2008-09-18 | Polysius Ag | Process for reprocessing a used grinding roller |
DE102007018090A1 (en) * | 2007-04-17 | 2008-10-23 | Polysius Ag | Grinding roller and process for reprocessing |
-
2006
- 2006-06-21 DE DE102006028546A patent/DE102006028546A1/en not_active Withdrawn
-
2007
- 2007-05-23 WO PCT/EP2007/004597 patent/WO2007147474A1/en active Application Filing
- 2007-05-23 RU RU2008142420/21A patent/RU2427426C2/en active
- 2007-05-23 BR BRPI0708406A patent/BRPI0708406A8/en not_active Application Discontinuation
- 2007-05-23 US US12/305,510 patent/US20090178280A1/en not_active Abandoned
- 2007-05-23 EP EP07725497A patent/EP1899071B1/en active Active
- 2007-05-23 CA CA2643959A patent/CA2643959C/en active Active
- 2007-05-23 AU AU2007263387A patent/AU2007263387B2/en active Active
- 2007-05-23 DE DE502007004541T patent/DE502007004541D1/en active Active
- 2007-05-23 DK DK07725497.7T patent/DK1899071T3/en active
- 2007-06-13 PE PE2007000744A patent/PE20080623A1/en active IP Right Grant
-
2008
- 2008-07-18 ZA ZA200806297A patent/ZA200806297B/en unknown
Also Published As
Publication number | Publication date |
---|---|
PE20080623A1 (en) | 2008-05-14 |
DE502007004541D1 (en) | 2010-09-09 |
DE102006028546A1 (en) | 2007-12-27 |
CA2643959A1 (en) | 2007-12-27 |
US20090178280A1 (en) | 2009-07-16 |
RU2427426C2 (en) | 2011-08-27 |
BRPI0708406A8 (en) | 2015-04-28 |
DK1899071T3 (en) | 2010-11-01 |
AU2007263387B2 (en) | 2010-11-04 |
EP1899071A1 (en) | 2008-03-19 |
CA2643959C (en) | 2014-07-08 |
AU2007263387A1 (en) | 2007-12-27 |
BRPI0708406A2 (en) | 2011-05-31 |
ZA200806297B (en) | 2009-10-28 |
WO2007147474A1 (en) | 2007-12-27 |
RU2008142420A (en) | 2010-04-27 |
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