EP0634217B1 - Verfahren zum Aufbau einer verschleissfesten Oberflächenpanzerung für die Walzen von Hochdruckwalzenpressen - Google Patents
Verfahren zum Aufbau einer verschleissfesten Oberflächenpanzerung für die Walzen von Hochdruckwalzenpressen Download PDFInfo
- Publication number
- EP0634217B1 EP0634217B1 EP94110787A EP94110787A EP0634217B1 EP 0634217 B1 EP0634217 B1 EP 0634217B1 EP 94110787 A EP94110787 A EP 94110787A EP 94110787 A EP94110787 A EP 94110787A EP 0634217 B1 EP0634217 B1 EP 0634217B1
- Authority
- EP
- European Patent Office
- Prior art keywords
- roller
- wear
- welding
- rollers
- pressure
- 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
Links
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 the construction of a wear-resistant surface armor for the rollers of high-pressure roller presses for pressure comminution of granular material, with a multiplicity of outwardly projecting profiles, in particular stud bolts, attached to the roller surface at a distance from one another.
- brittle regrind is drawn into the roller gap, through which the two rotatably mounted counter-rotating rollers are separated from one another, where it is subjected to pressure comminution.
- material bed comminution in the nip of a high-pressure roller press in which the individual particles of the ground material drawn into the nip by friction in a material bed, ie. H. are crushed in a material bed compressed between the two roller surfaces when an extremely high pressure is applied (EP-B-0 084 383). It is understood that the roller surfaces are subjected to extremely high stress and wear.
- the invention is based, in particular for the rollers of high-pressure roller presses for pressure comminution of granular goods, to provide wear-resistant surface armouring which is as suitable as possible for autogenous wear protection and which is simple in terms of production technology and has a long service life with a minimal risk of cracking even when exposed to high pressures .
- the large number of profiles attached to the roller surface such as, in particular, stud bolts
- the profiles / Stud bolts are produced in that they are welded with the help of a mold, so that the profiles / bolts consist only of the discharge welding material itself.
- a mold adapted to the contour of the roll surface is placed on the roll base or on its bandages / segments, which has radial through openings such as. B.
- the profiles protruding from the lateral surface of the roller consist of weld metal which has been melted by build-up welding and solidified in the mold shape with a good fusion welded connection between the shape-welded profiles such as stud bolts and the roller base material. This minimizes the risk of cracks running deep into the roller base.
- the alloy material (s) of the shape-welded profiles such as stud bolts have a high hardness of more than 50 HRC, at least in the radially outer areas. B. 60 HRC (Rockwell C hardness test).
- the mold has cooling medium channels which are connected to an inlet and outlet for the cooling medium, such as, for. B. water can be connected. Due to the particularly liquid-cooled walls of the mold or its welding molds, structural modifications in the weld metal, namely in the then solidified profiles, as well as their structural properties such as hardness, toughness, wear resistance, etc. can be set in a targeted manner. In any case, metal-cutting preparatory work such as drilling, grooving, etc. is avoided in the surface armor according to the invention.
- the drawing shows schematically in the detail the top of the shell of a roller, which is provided with the surface armor according to the invention.
- the surface armor according to the invention.
- the mold (11) is adapted to the contour of the roller surface and z. B. copper or a copper alloy existing mold (11) which is bar-shaped in the embodiment and z. B. can extend over the entire width of the roller surface.
- the mold (11) is provided with radial through bores (12, 13, 14 etc.), the size and spacing of which corresponds to the field of the stud bolts.
- the mold (11) has cooling water channels (15, 16), to each of which an inlet and outlet for the cooling water can be connected, which flows longitudinally through the mold.
- the radial through openings (12, 13, 14 etc.) are filled with build-up welding material, after the welding material has solidified, the mold (11) is lifted off the roller surface (10), and the shape-welded stud bolts (17) created in this way remain with a very fixed fusion welded joint (18) on the roller surface (10).
- the height of the stud bolts (17) can, for. B. 8 to 10 mm and their diameter z. B. 15 mm.
- Adjacent stud bolts (17) are so closely spaced from each other of less than about 40 mm, so that the spaces or pockets formed between the bolts are so narrow that these spaces or pockets between the bolts with compressed fine-grained material are compressed in the material bed Are well filled in, which remains in the pockets during the roller revolutions as an autogenous roller wear protection.
- the through bores (12, 13, 14 etc.) of the mold (11) can advantageously widen conically from top to bottom at a small angle in order to facilitate the lifting of the mold (11) from the roll surface (10) after the shape welding process.
- Wear-resistant alloys in the form of cored wires, welding rods, build-up welding powder, etc. are preferably used as the material for the shape-welded profiles such as knobs (17) etc., and plasma powder build-up welding and plasma build-up welding with external wire feed can also be used.
- the build-up welding can be carried out manually or robotized.
- the build-up welding alloys used can be varied. There is e.g. B. the possibility of building up the radially outer build-up weld layers or welding alloys of the shape-welded studs from a different (harder) alloy material than the radially inner build-up weld layers per stud stud.
- the mold (11) preferably consists of a material of sufficiently high thermal conductivity, heat resistance and a sufficiently high melting point, e.g. B. made of copper or a copper alloy. In special cases such as B. in the repair of damaged welded studs, the mold can also consist of ceramic material.
- the wear-resistant surface armor of rollers according to the invention is not limited to stud bolts as profiles.
- the profiles projecting outward from the roller surface (10) can also be web-shaped or strip-shaped bodies with an approximately rectangular cross section.
- the through openings of the mold (11) do not consist of through bores, but instead of corresponding through slots which are filled with weld metal, after the solidification of which welded web-shaped roller profiles are formed.
Landscapes
- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Rolls And Other Rotary Bodies (AREA)
- Crushing And Grinding (AREA)
- Processing And Handling Of Plastics And Other Materials For Molding In General (AREA)
Applications Claiming Priority (2)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE4324074 | 1993-07-17 | ||
DE4324074A DE4324074A1 (de) | 1993-07-17 | 1993-07-17 | Verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen und Verfahren zum Aufbau einer solchen Walzenpanzerung |
Publications (2)
Publication Number | Publication Date |
---|---|
EP0634217A1 EP0634217A1 (de) | 1995-01-18 |
EP0634217B1 true EP0634217B1 (de) | 1997-09-24 |
Family
ID=6493118
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
EP94110787A Expired - Lifetime EP0634217B1 (de) | 1993-07-17 | 1994-07-12 | Verfahren zum Aufbau einer verschleissfesten Oberflächenpanzerung für die Walzen von Hochdruckwalzenpressen |
Country Status (6)
Country | Link |
---|---|
US (1) | US5601520A (da) |
EP (1) | EP0634217B1 (da) |
AT (1) | ATE158517T1 (da) |
DE (2) | DE4324074A1 (da) |
DK (1) | DK0634217T3 (da) |
ZA (1) | ZA945082B (da) |
Families Citing this family (14)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP0659108B1 (de) * | 1993-07-20 | 1998-10-07 | Maschinenfabrik Köppern GmbH. & Co. KG | Walzenpressen, insbesondere zum zerkleinern von stark abrasiven stoffen |
DE19506600A1 (de) * | 1995-02-24 | 1996-08-29 | Krupp Polysius Ag | Walze, Verfahren zur Herstellung einer Walze sowie Gutbettwalzenmühle |
DE19618143A1 (de) * | 1996-05-06 | 1997-11-13 | Krupp Polysius Ag | Mahlwalze sowie Betriebs- und Reparaturverfahren |
DE19646030A1 (de) * | 1996-11-08 | 1998-05-14 | Deutz Ag | Verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruckwalzenpressen zur Druckzerkleinerung körnigen Gutes |
DE19707130A1 (de) * | 1997-02-22 | 1998-08-27 | Kloeckner Humboldt Wedag | Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmühlen zur Druckzerkleinerung körnigen Gutes |
EP1077087B1 (de) | 1999-08-14 | 2003-05-28 | KHD Humboldt-Wedag AG | Mahlwalze und Verfahren zu ihrer Herstellung |
DE102004025175B4 (de) * | 2004-05-21 | 2006-07-06 | Kerr-Mcgee Pigments Gmbh | Gutbett-Walzenmühle |
DE102006010042A1 (de) * | 2006-03-04 | 2007-09-06 | Khd Humboldt Wedag Gmbh | Hartkörper für den autogenen Verschleißschutz von Walzenoberflächen |
CN100441367C (zh) * | 2006-12-20 | 2008-12-10 | 王荫森 | 电喷击磨辊的生产工艺 |
DE102007012102A1 (de) * | 2007-03-13 | 2008-09-18 | Polysius Ag | Verfahren zur Wiederaufarbeitung einer gebrauchten Mahlwalze |
DE102009039928B3 (de) * | 2009-08-17 | 2011-03-03 | Khd Humboldt Wedag Gmbh | Rollenpressen-Rasterpanzerung mit ringförmigen Bolzen und Verfahren zur Erneuerung der Bewehrung dieser Rasterpanzerung |
US9476304B2 (en) * | 2013-05-10 | 2016-10-25 | Caterpillar Inc. | Laser casting blade repair |
CN104084259B (zh) * | 2014-08-01 | 2017-02-22 | 张珂 | 一种辊子及其辊压装置 |
CN104174457B (zh) * | 2014-08-06 | 2017-04-05 | 成都大宏立机器股份有限公司 | 高压辊磨机辊子护圈、辊子及装配方法 |
Family Cites Families (22)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US412558A (en) * | 1889-10-08 | Surface for grinding and crushing | ||
US4915A (en) * | 1847-01-01 | Improvement in uterine supporters | ||
FR736225A (fr) * | 1931-08-10 | 1932-11-21 | Bretagne Atel Chantiers | Procédé pour l'utilisation de la soudure à l'arc électrique, en vue de l'obtention d'un dépôt de métal de formes et dimensions déterminées |
DE1061599B (de) * | 1954-07-02 | 1959-07-16 | Unipulver Ltd | Rotor fuer Mahlvorrichtungen |
US3156968A (en) * | 1962-03-22 | 1964-11-17 | Jr William D White | Pressure roller and method of manufacture |
DE1284266B (de) * | 1964-08-22 | 1968-11-28 | Doerries Gmbh | Mahlwerkzeuge fuer Stiftmuehlen zum Zerkleinern, Zerfasern, Mahlen und/oder sonstigen Behandeln von Gut, insbesondere von Gut fuer die Papier-, Pappe- oder Kartonherstellung |
CH479395A (de) * | 1968-03-27 | 1969-10-15 | H Geiger Maschf | Walzenpresse, insbesondere für Rechengut |
US3594533A (en) * | 1968-07-12 | 1971-07-20 | Mckay Co | Welding apparatus |
SE324991B (da) * | 1969-07-08 | 1970-06-15 | Sandvikens Jernverks Ab | |
DE2704605B1 (de) * | 1977-02-04 | 1978-01-19 | Wahl Verschleiss Tech | Abtriebsbestaendiger plattenfoermiger verbundkoerper und verfahren zu seiner herstellung |
US4066862A (en) * | 1977-05-27 | 1978-01-03 | Tippmann Eugene R | Method of building-up a layer of metal on a metal surface |
DE3302176A1 (de) * | 1983-01-24 | 1984-07-26 | Klöckner-Humboldt-Deutz AG, 5000 Köln | Verfahren und anlage zur kontinuierlichen druckzerkleinerung sproeden mahlgutes |
DE3621747A1 (de) * | 1986-06-28 | 1988-01-07 | Werner Schatz | Verfahren zur herstellung von gegen insbesondere reibverschleiss gepanzerten blechen |
JPS63143949A (ja) * | 1986-12-09 | 1988-06-16 | アイエヌジ商事株式会社 | 粉砕機に使用される破砕面部材 |
DD284611A5 (de) * | 1988-09-22 | 1990-11-21 | Kloeckner-Humboldt-Deutz Aktiengesellschaft,De | Verschleissfeste walzenbeschichtung und verfahren zum aufbauen der walzenbeschichtung |
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 |
DE3843173A1 (de) * | 1988-12-22 | 1990-07-05 | Kloeckner Humboldt Deutz Ag | Verschleissfeste oberflaechenpanzerung fuer die walzen von walzenmaschinen, insbesondere hochdruck-walzenpressen |
DE3926883A1 (de) * | 1989-08-16 | 1991-02-21 | Kloeckner Humboldt Deutz Ag | Verschleissfeste oberflaechenpanzerung fuer die walzen von walzenmaschinen, insbesondere von hochdruck-walzenpressen |
DE4036040C2 (de) * | 1990-02-22 | 2000-11-23 | Deutz Ag | Verschleißfeste Oberflächenpanzerung für die Walzen von Walzenmaschinen, insbesondere von Hochdruck-Walzenpressen |
DE4032615C2 (de) * | 1990-10-15 | 1994-12-01 | Kloeckner Humboldt Deutz Ag | Verfahren und Vorrichtung zum Aufbringen einer verschleißfesten Panzerung auf die Walzenstirnseiten von Walzenpressen |
DE4038798A1 (de) * | 1990-12-05 | 1992-06-11 | Krupp Polysius Ag | Walzenmuehle |
DE4210395A1 (de) * | 1992-03-30 | 1993-10-07 | Krupp Polysius Ag | Walzenmühle |
-
1993
- 1993-07-17 DE DE4324074A patent/DE4324074A1/de not_active Withdrawn
-
1994
- 1994-07-11 US US08/273,479 patent/US5601520A/en not_active Expired - Fee Related
- 1994-07-12 AT AT94110787T patent/ATE158517T1/de not_active IP Right Cessation
- 1994-07-12 DK DK94110787.2T patent/DK0634217T3/da active
- 1994-07-12 EP EP94110787A patent/EP0634217B1/de not_active Expired - Lifetime
- 1994-07-12 DE DE59404133T patent/DE59404133D1/de not_active Expired - Fee Related
- 1994-07-13 ZA ZA945082A patent/ZA945082B/xx unknown
Also Published As
Publication number | Publication date |
---|---|
DE4324074A1 (de) | 1995-01-19 |
DK0634217T3 (da) | 1998-03-30 |
EP0634217A1 (de) | 1995-01-18 |
ATE158517T1 (de) | 1997-10-15 |
ZA945082B (en) | 1995-03-16 |
US5601520A (en) | 1997-02-11 |
DE59404133D1 (de) | 1997-10-30 |
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