EP1804973B9 - Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture - Google Patents
Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture Download PDFInfo
- Publication number
- EP1804973B9 EP1804973B9 EP05783028.3A EP05783028A EP1804973B9 EP 1804973 B9 EP1804973 B9 EP 1804973B9 EP 05783028 A EP05783028 A EP 05783028A EP 1804973 B9 EP1804973 B9 EP 1804973B9
- Authority
- EP
- European Patent Office
- Prior art keywords
- casing
- annular casing
- roller
- spaced
- annular
- 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
- 238000004519 manufacturing process Methods 0.000 title description 3
- 239000000463 material Substances 0.000 claims description 22
- 229910001141 Ductile iron Inorganic materials 0.000 claims description 8
- 239000011324 bead Substances 0.000 claims description 6
- 238000005266 casting Methods 0.000 claims description 6
- 229910001566 austenite Inorganic materials 0.000 claims description 5
- 229910000734 martensite Inorganic materials 0.000 claims description 5
- 238000000034 method Methods 0.000 claims description 4
- 230000002093 peripheral effect Effects 0.000 claims description 4
- 238000005275 alloying Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052759 nickel Inorganic materials 0.000 claims description 3
- 239000002245 particle Substances 0.000 claims description 3
- 238000003825 pressing Methods 0.000 claims description 3
- 238000001816 cooling Methods 0.000 claims description 2
- 238000007747 plating Methods 0.000 claims 2
- 239000000126 substance Substances 0.000 claims 2
- 238000003754 machining Methods 0.000 claims 1
- 229910001018 Cast iron Inorganic materials 0.000 description 6
- 239000008187 granular material Substances 0.000 description 4
- 238000005552 hardfacing Methods 0.000 description 4
- 238000003466 welding Methods 0.000 description 4
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 3
- 229910002804 graphite Inorganic materials 0.000 description 3
- 239000010439 graphite Substances 0.000 description 3
- 239000010410 layer Substances 0.000 description 3
- 230000000717 retained effect Effects 0.000 description 3
- 239000002344 surface layer Substances 0.000 description 3
- 229910045601 alloy Inorganic materials 0.000 description 1
- 239000000956 alloy Substances 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 239000013590 bulk material Substances 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 239000002184 metal Substances 0.000 description 1
- 229910052751 metal Inorganic materials 0.000 description 1
- 238000005096 rolling process Methods 0.000 description 1
- 238000007493 shaping process Methods 0.000 description 1
Images
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 ring bandage with a wear-resistant surface for a press roll for the compressive stress of granular material, in particular for roller presses for Gutbettzerkleintation. Moreover, the invention relates to a method for manufacturing such a press roll ring bandage.
- They should have a high wear resistance, can be produced inexpensively, can be repaired by the operator of the roller press, and also have a good intake behavior for the material to be shredded.
- the invention has for its object to provide in particular for the press rolls of roller presses for crushing granular material a ring bandage whose outer surface always has a high wear resistance, without embedded carbide body such. B. need to apply powder-metallurgically produced stud bolts.
- the material of the ring bandage according to the invention for a press roll in particular for the comminution fine granular material consists of cast iron with nodular graphite bainitic structure with retained austenite, this material is adjusted in its property that it has such a ductility that the ring bandage whose wall thickness to may amount to about 500 mm, without risk of breakage on a roll body with shaft journals shrink down. Surprisingly, it has been shown that through external pressure load of the bandage surface of the casting material hardens on its surface and in its peripheral layers by formation of martensite.
- the greatest hardness and wear resistance is substantially at the surface and in the edge layers of the bandage and not in the radially inner regions of the bandage.
- the hardness in the marginal layers of the bandage forms and renews itself during operation of the roll machine again and again until the bandage is consumed after a long service life to the structurally necessary residual wall thickness.
- the ring bandage according to the invention thus forms self-hardening surface layers.
- spaced-apart recesses are formed, for. B. molded during casting and / or formed by mechanical processing, in particular grooving, so that is pressed during operation of the rolling machine in the recesses of the profiled outer surface of the ring bandage to be treated
- Gutmaterial which remains there during the roller revolutions, forms an autogenous wear protection for the drum surfaces and due to its roughness also has a good intake behavior.
- lying between the spaced groove recesses profiling protrusions of the drum surface are still armored by existing hard material surfacing worms.
- This additional armor of the ring bandage according to the invention creates no problems, since the welding stresses arising during buildup welding are almost neutralized by the dimensioning and geometric distribution of the material bumps between the spaced grooves and thus the cracking of the annular bandage material is avoided by welding in this way.
- the method for producing a press roller ring bandage for the compressive stress granular material especially for roller presses for Gutbettzerkleintation is according to the invention is characterized in that the annular bandage is cast first of nodular cast iron with at least the alloying elements Ni and Mo while avoiding a pearlitic structure and by a subsequent heat treatment and subsequent controlled cooling of the cast body is given a bainitic structure with retained austenite, wherein pressure exerted by the outer surface of the annular bandage in their operation whose outer surface layers are cured again and again to form martensite.
- the shaping of the surface profiling of the ring bandage is accomplished in particular by grooving.
- Fig. 1 is on a roller body 8 with shaft journals 9a, 9b a ring bandage 10 with a wall thickness of z. B. 170 mm to 500 mm attached, in particular by shrinking.
- the material of the bandage 10 consists of nodular cast iron with bainitic structure with retained austenite.
- the roll surface contains high martensite portions, which are formed again and again by external pressure loading of the bandage surface, in particular during operation of the press roll.
- the occurring in the Gutbettzerkleintation in the nip of a roller press pressure can, for. B. greater than 100 MPa and the specific pressing force z. B. 8 to 10 t / cm roll width.
- the hardness of the ring bandage according to the invention can, for. B. be about 40 HRC.
- the hardness and wear resistance form and renew during operation of the press roll over and over again until after a long life, the ring bandage is consumed.
- Fig. 2 are recesses formed in the outer surface of the annular band 10, 11 spaced apart grooves, namely grooves 12, 13, which may be formed by casting, but are made in particular by mechanical processing such as grooving.
- grooves 12, 13 which may be formed by casting, but are made in particular by mechanical processing such as grooving.
- Profiltechniksvorsprünge the bandage surface can still be armored by hard-facing welding beads 14 or by other hard materials.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Grinding (AREA)
- Rolls And Other Rotary Bodies (AREA)
Claims (4)
- Garniture annulaire à surface résistant à l'usure pour un rouleau presseur pour le traitement par pression de matière granuleuse, en particulier pour des rouleaux presseurs pour le broyage d'un lit de matières, caractérisé par les caractéristiques suivantes:a) le matériau de la garniture (10, 11) se compose de fonte à graphite sphéroïdal avec au moins les éléments d'alliage Ni et Mo et présente une structure bainitique avec de l'austénite résiduelle,b) les couches de bord (11) de la garniture annulaire (10) contiennent, pour produire une surface dure, de la martensite qui est sans cesse reformée par une charge de compression lors du fonctionnement du rouleau presseur,c) des creux espacés les uns des autres (12, 13) sont formés dans la surface extérieure de la garniture (10, 11) pour la protection autogène contre l'usure,dans laquelle des saillies de profilage de la surface de la garniture, situées entre les creux espacés (12, 13), sont encore blindées par des cordons de soudure de rechargement (14) composés de matières dures.
- Garniture annulaire selon la revendication 1, caractérisée en ce que les creux (12, 13) formés dans la surface extérieure de la garniture sont produits par meulage de rainures.
- Garniture annulaire selon la revendication 1, caractérisée en ce que la garniture (10) présente une épaisseur de paroi pouvant atteindre environ 500 mm et est frettée sur un corps de base de rouleau avec des tourillons.
- Procédé de fabrication d'une garniture annulaire de rouleau presseur pour la sollicitation par pression de matière granuleuse, en particulier de rouleaux presseurs pour le broyage d'un lit de matières, caractérisé par les caractéristiques suivantes:a) la garniture annulaire (10, 11) est moulée en fonte à graphite sphéroïdal avec au moins les éléments d'alliage Ni et Mo,b) le corps moulé acquiert une structure bainitique avec de l'austénite résiduelle par un traitement thermique qui suit auquel succède un refroidissement contrôlé,c) les couches de bord de la garniture annulaire (10, 11) sont sans cesse à nouveau durcies avec formation de martensite par une charge de compression de la surface extérieure de celle-ci,d) des creux (12, 13) espacés les uns des autres sont formés dans la surface extérieure de la garniture annulaire (10, 11), avant son utilisation dans la presse à rouleaux, par moulage et/ou par usinage mécanique, en particulier par meulage de rainures,dans lequel des saillies de profilage de la surface de la garniture, situées entre les creux espacés (12, 13), sont encore blindées par des cordons de soudure de rechargement (14) en matières dures.
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE102004043562.6A DE102004043562B4 (de) | 2004-09-09 | 2004-09-09 | Presswalzen-Ringbandage und Verfahren zu ihrer Herstellung |
PCT/EP2005/009574 WO2006027215A1 (fr) | 2004-09-09 | 2005-09-07 | Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture |
Publications (3)
Publication Number | Publication Date |
---|---|
EP1804973A1 EP1804973A1 (fr) | 2007-07-11 |
EP1804973B1 EP1804973B1 (fr) | 2013-06-05 |
EP1804973B9 true EP1804973B9 (fr) | 2016-09-21 |
Family
ID=35197969
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP05783028.3A Active EP1804973B9 (fr) | 2004-09-09 | 2005-09-07 | Garniture annulaire pour rouleaux presseurs et procede pour realiser ladite garniture |
Country Status (6)
Country | Link |
---|---|
US (2) | US7832671B2 (fr) |
EP (1) | EP1804973B9 (fr) |
CN (1) | CN100581652C (fr) |
DE (1) | DE102004043562B4 (fr) |
DK (1) | DK1804973T3 (fr) |
WO (1) | WO2006027215A1 (fr) |
Families Citing this family (9)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
DE102007007276B4 (de) * | 2007-02-14 | 2019-12-05 | Khd Humboldt Wedag Gmbh | Panzerung der Oberflächen von Rollenpressen-Presswalzen |
DE102010024221A1 (de) | 2010-06-18 | 2011-12-22 | Khd Humboldt Wedag Gmbh | Profilierte Bandage für eine Rollenpresse |
DE202012007144U1 (de) | 2012-06-19 | 2012-08-03 | Khd Humboldt Wedag Gmbh | Profilierte Bandage für eine Rollenpresse |
DE102012106527B4 (de) * | 2012-07-18 | 2016-01-21 | Maschinenfabrik Köppern GmbH & Co KG | Presswalze für eine Walzenpresse |
CN102962652B (zh) * | 2012-12-17 | 2015-03-11 | 重庆京庆重型机械股份有限公司 | 一种辊压机辊套的加工方法 |
CN102974421A (zh) * | 2012-12-17 | 2013-03-20 | 重庆京庆重型机械股份有限公司 | 辊压机辊套 |
DE102014006427A1 (de) * | 2014-05-02 | 2015-11-05 | Khd Humboldt Wedag Gmbh | Walze mit Verschleißschutzschicht für eine Rollenpresse |
DE102018111621B4 (de) * | 2018-05-15 | 2020-01-23 | Helmut Prihoda | Verfahren zur Verbesserung der Produktivität von Mahlanlagen |
CN110154277B (zh) * | 2019-07-08 | 2020-06-19 | 霍昀 | 一种废旧轮胎破碎刀辊及其多功能破碎机 |
Family Cites Families (6)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US2771358A (en) * | 1954-07-16 | 1956-11-20 | Int Nickel Co | Machine elements for crushers |
CN85102110B (zh) * | 1985-04-03 | 1987-11-04 | 铁道部大连机车车辆工厂 | 具有奥氏体—贝氏体的球墨铸铁和制造方法 |
DE4132474A1 (de) * | 1991-05-28 | 1992-12-03 | Kloeckner Humboldt Deutz Ag | Verschleissfeste mahlwalze fuer die verwendung in walzenmaschinen, insbesondere in hochdruckwalzenpressen |
DE4210395A1 (de) * | 1992-03-30 | 1993-10-07 | Krupp Polysius Ag | Walzenmühle |
CN1182142A (zh) * | 1996-11-07 | 1998-05-20 | 鞍山钢铁集团公司 | 一种耐磨铸钢 |
DE19750144A1 (de) * | 1997-11-12 | 1999-06-02 | Krupp Polysius Ag | Verfahren zur Herstellung einer Mahlwalze |
-
2004
- 2004-09-09 DE DE102004043562.6A patent/DE102004043562B4/de not_active Expired - Fee Related
-
2005
- 2005-09-07 US US11/662,350 patent/US7832671B2/en not_active Expired - Fee Related
- 2005-09-07 EP EP05783028.3A patent/EP1804973B9/fr active Active
- 2005-09-07 CN CN200580035078A patent/CN100581652C/zh not_active Expired - Fee Related
- 2005-09-07 WO PCT/EP2005/009574 patent/WO2006027215A1/fr active Application Filing
- 2005-09-07 DK DK05783028.3T patent/DK1804973T3/da active
-
2010
- 2010-11-12 US US12/944,915 patent/US8388772B2/en not_active Expired - Fee Related
Also Published As
Publication number | Publication date |
---|---|
US8388772B2 (en) | 2013-03-05 |
WO2006027215A1 (fr) | 2006-03-16 |
CN100581652C (zh) | 2010-01-20 |
DE102004043562A1 (de) | 2006-03-30 |
CN101039752A (zh) | 2007-09-19 |
DK1804973T3 (da) | 2013-09-08 |
US20110061773A1 (en) | 2011-03-17 |
EP1804973B1 (fr) | 2013-06-05 |
DE102004043562B4 (de) | 2016-09-29 |
EP1804973A1 (fr) | 2007-07-11 |
US20080191074A1 (en) | 2008-08-14 |
US7832671B2 (en) | 2010-11-16 |
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