EP2117716B1 - Verfahren zur wiederaufarbeitung einer gebrauchten mahlwalze - Google Patents

Verfahren zur wiederaufarbeitung einer gebrauchten mahlwalze Download PDF

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Publication number
EP2117716B1
EP2117716B1 EP07857825A EP07857825A EP2117716B1 EP 2117716 B1 EP2117716 B1 EP 2117716B1 EP 07857825 A EP07857825 A EP 07857825A EP 07857825 A EP07857825 A EP 07857825A EP 2117716 B1 EP2117716 B1 EP 2117716B1
Authority
EP
European Patent Office
Prior art keywords
material layer
roller body
worn
turned
roller
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
Application number
EP07857825A
Other languages
German (de)
English (en)
French (fr)
Other versions
EP2117716A1 (de
Inventor
Norbert Patzelt
Johann Knecht
Herbert Pingel
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.)
ThyssenKrupp Industrial Solutions AG
Original Assignee
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
Family has litigation
First worldwide family litigation filed litigation Critical https://patents.darts-ip.com/?family=39184733&utm_source=google_patent&utm_medium=platform_link&utm_campaign=public_patent_search&patent=EP2117716(B1) "Global patent litigation dataset” by Darts-ip is licensed under a Creative Commons Attribution 4.0 International License.
Application filed by Polysius AG filed Critical Polysius AG
Publication of EP2117716A1 publication Critical patent/EP2117716A1/de
Application granted granted Critical
Publication of EP2117716B1 publication Critical patent/EP2117716B1/de
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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
    • 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
    • Y10T29/4956—Fabricating and shaping roller work contacting surface element
    • Y10T29/49561—Fabricating and shaping roller work contacting surface element toothed roller
    • 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
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • Y10T29/49723—Repairing with disassembling including reconditioning of part
    • 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
    • Y10T29/49718—Repairing
    • Y10T29/49721—Repairing with disassembling
    • Y10T29/49723—Repairing with disassembling including reconditioning of part
    • Y10T29/49725—Repairing with disassembling including reconditioning of part by shaping
    • Y10T29/49726—Removing material

Definitions

  • the invention relates to a process for the reprocessing of a used grinding roller of a high-pressure good bed roller mill according to the preamble of claim 1.
  • Grinding rolls of this type are for example by the EP 0 516 952 B1 known. They contain a plurality of wear-resistant profile body, which are incorporated with part of their length in holes of the roller body and protrude with the remaining part of its length over the surface of the roller body. In the operation of such rolls, the spaces between the above profile bodies fill with the comminuted material fed to the good bed roller mill, which thus results in a certain autogenous wear protection for the surface of the roller body.
  • Both the protruding profile body and the surface of the roller body during the operating time are subject to an inevitable wear, which makes a reprocessing of the grinding roller required if the roll body is to be used further.
  • a grinding roll is known in which the hardness of the roll surface forming material of the roll body is greater than 56 HRc (hardness according to Rockwell).
  • This grinding roller is used in the crushing operation until a substantial part of all profile body has worn out completely and / or has fallen out of the roll body.
  • the reprocessing of the used grinding roller is then carried out in such a way that the roll surface is brought back into a cylindrical shape by completely turning off the profiled body and the original holes, after which new holes are produced and inserted into these holes new profile body.
  • the invention is therefore based on the object, a method according to the preamble of claim 1 in such a way that a cost-effective reprocessing of a used grinding roller is achieved.
  • the worn surface of the roller body is turned off at least in a partial region of the width of the roller body when a certain state of wear is reached. Then, in a welding process, a material layer for increasing the diameter is applied at least to the turned-off surface.
  • the welded-on material layer is then provided with holes for receiving new profile body.
  • these bores can either be provided only in the welded-on material layer or extend into the base material of the roller body lying beneath this material layer.
  • the worn surface of a roller body can be equalized even with different degree of wear of the individual sections with the least possible material and labor.
  • the inventive method is thus characterized by a time and material-saving, cost-effective reprocessing of a used grinding roller.
  • Fig. 1 shows on the right the worn condition after a certain operating time.
  • the surface 1'a of the roller body 1 ' is now - different in the individual Areas - more or less eroded.
  • the profile body 12 ', 13', 14 ' shortened by the wear compared to the original length (contour line 15).
  • Fig. 2 illustrates how a used grinding roller according to a first variant of the method according to the invention can be worked up again.
  • Fig. 1 On the left is the hand of Fig. 1 already described worn condition of the roller body 1 'and the profile body 12', 13 ', 14' shown.
  • the worn profile bodies 12 ', 13', 14 ' are first removed.
  • the worn surface 1 'a of the roller body 1' is turned off to a diameter D.
  • the diameter D in this embodiment is smaller than the diameter of the bottom of the holes 2, 3, 4. These old holes are thus completely removed by the twisting.
  • a material layer 16 is applied to the widened surface 1'b of the roll body 1 in a welding operation to increase the diameter.
  • This material layer 16 is then provided with holes 22, 23, 24 for receiving new profile body 32, 33, 34.
  • FIG. 3 shown further embodiment left again the worn state and right the state after reprocessing shown.
  • the differently worn surface 1'a of the roll body 1' in the edge regions of the width of the roll body ie here in the areas in which the profile body 12 ', 13 'were turned off (except here in the region of the profile body 14') to the diameter D 'of the most heavily worn portion.
  • Fig. 4 shows a modification of the variant according to Fig. 3 ,
  • material layers 26a, 26b, 26c (in each case in a plurality of layers) are applied to the leveled surface 1'c of the roll body 1 ', which - viewed across the width of the roll body 1' - may have different hardness, thickness and wear properties.
  • the holes 22, 23, 24 are provided for receiving the new profile body 32, 33, 34 exclusively in the welded material layer 16 or 26 or 26 a, 26 b, 26 c shows Fig. 5 a variant of the embodiment according to Fig. 4 in which the bores 42, 43, 44 for receiving the new profiled bodies 32, 33, 34 are passed through the welded-on material layer 26 'and extend into the base material of the roller body 1' located below this material layer 26 '.
  • the thickness of the welded-on material layer 26 ' can be kept significantly smaller than in the variant according to FIG Fig. 3 ,
  • the roll body does not always have to have a uniform diameter over the entire length of the roll body. It can be rather for individual sections are selected different diameters, such as when the edge area is only slightly worn and therefore no welding is performed here.

Landscapes

  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Grinding Of Cylindrical And Plane Surfaces (AREA)
  • Cylinder Crankcases Of Internal Combustion Engines (AREA)
  • Polishing Bodies And Polishing Tools (AREA)
  • Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
  • Finish Polishing, Edge Sharpening, And Grinding By Specific Grinding Devices (AREA)
  • Disintegrating Or Milling (AREA)
EP07857825A 2007-03-13 2007-12-19 Verfahren zur wiederaufarbeitung einer gebrauchten mahlwalze Active EP2117716B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
DE102007012102A DE102007012102A1 (de) 2007-03-13 2007-03-13 Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze
PCT/EP2007/064203 WO2008110224A1 (de) 2007-03-13 2007-12-19 Verfahren zur wiederaufarbeitung einer gebrauchten mahlwalze

Publications (2)

Publication Number Publication Date
EP2117716A1 EP2117716A1 (de) 2009-11-18
EP2117716B1 true EP2117716B1 (de) 2010-09-22

Family

ID=39184733

Family Applications (1)

Application Number Title Priority Date Filing Date
EP07857825A Active EP2117716B1 (de) 2007-03-13 2007-12-19 Verfahren zur wiederaufarbeitung einer gebrauchten mahlwalze

Country Status (15)

Country Link
US (1) US8316543B2 (pt)
EP (1) EP2117716B1 (pt)
CN (1) CN101594938B (pt)
AT (1) ATE482030T1 (pt)
AU (1) AU2007349090B2 (pt)
BR (1) BRPI0720763A8 (pt)
CA (1) CA2675213C (pt)
CL (1) CL2008000699A1 (pt)
DE (2) DE102007012102A1 (pt)
DK (1) DK2117716T3 (pt)
MX (1) MX2009007504A (pt)
PE (1) PE20081815A1 (pt)
RU (1) RU2446888C2 (pt)
WO (1) WO2008110224A1 (pt)
ZA (1) ZA200905496B (pt)

Families Citing this family (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
DE102006028546A1 (de) * 2006-06-21 2007-12-27 Polysius Ag Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze
US9352325B2 (en) 2009-12-18 2016-05-31 Metso Minerals (Wear Protection) Ab Bimaterial elongated insert member for a grinding roll
DE102010010431B4 (de) 2010-03-05 2012-04-05 Thyssenkrupp Polysius Ag Verfahren zur Wiederaufarbeitung der verschlissenen Oberfläche von Mahlwalzen einer Gutbettwalzenmühle
DE102010060600B3 (de) * 2010-11-16 2012-03-01 Polysius Ag Verfahren von Aufbereitung von gebrauchten Walzenkörpern einer Walzenmühle sowie aufbereiteter Walzenkörper
DE102011104854B4 (de) * 2011-06-21 2015-06-11 Khd Humboldt Wedag Gmbh Mahlwalze mit in die Oberfläche eingesetzten Hartkörpern
US8833687B2 (en) * 2012-04-20 2014-09-16 Metso Minerals Industries, Inc. Crushing roll with edge protection
CN104526248B (zh) * 2014-11-04 2017-01-25 马鞍山格林环保科技股份有限公司 一种高压辊磨机柱钉辊面修复方法
US9962774B2 (en) * 2014-12-08 2018-05-08 The Boeing Company Cutting tool
CN111299958A (zh) * 2020-03-30 2020-06-19 安徽马钢设备检修有限公司 一种矿山高压辊磨机辊子上的柱钉镶嵌装置及其焊补工艺

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Also Published As

Publication number Publication date
BRPI0720763A2 (pt) 2014-01-21
ZA200905496B (en) 2010-04-28
PE20081815A1 (es) 2009-02-19
CN101594938B (zh) 2012-02-01
WO2008110224A1 (de) 2008-09-18
AU2007349090A1 (en) 2008-09-18
CA2675213C (en) 2014-02-18
US8316543B2 (en) 2012-11-27
RU2446888C2 (ru) 2012-04-10
CN101594938A (zh) 2009-12-02
EP2117716A1 (de) 2009-11-18
CL2008000699A1 (es) 2008-09-22
RU2009131752A (ru) 2011-04-20
US20100058570A1 (en) 2010-03-11
DE502007005162D1 (de) 2010-11-04
CA2675213A1 (en) 2008-09-18
AU2007349090B2 (en) 2011-03-31
MX2009007504A (es) 2009-07-17
DE102007012102A1 (de) 2008-09-18
BRPI0720763A8 (pt) 2015-04-28
DK2117716T3 (da) 2011-01-10
ATE482030T1 (de) 2010-10-15

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