EP0634217B1 - Procedure for the manufacture of a wear-resistant surface coating for rollers of high pressure roller mills - Google Patents
Procedure for the manufacture of a wear-resistant surface coating for rollers of high pressure roller mills 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)
Abstract
Description
Die Erfindung betrifft den Aufbau einer verschleißfesten Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes, mit einer Vielzahl von an der Walzenoberfläche mit Abstand voneinander angebrachten nach außen vorstehenden Profilen, insbesondere Noppenbolzen.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.
Bei Walzenbrechern und Walzenmühlen wird sprödes Mahlgut in den Walzenspalt, durch den die beiden drehbar gelagerten gegenläufig rotierbaren Walzen voneinander getrennt sind, 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-B-0 084 383). Es versteht sich, daß dabei die Walzenoberflächen einer außerordentlich hohen Beanspruchung und einem hohen Verschleiß ausgesetzt sind.In the case of roller crushers and roller mills, 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. 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 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.
Es ist daher bekannt, die Oberflächen von Gutbettzerkleinerungs-Walzenpressen dadurch verschleißfest zu machen, indem auf die Walzenoberflächen eine Vielzahl von Profilen wie vorgefertigte stiftförmige Noppenbolzen aufgeschweißt wird, die mit einer so großen Höhe nach außen von der Walzenoberfläche vorstehen und mit einem so engen Abstand voneinander angeordnet sind, daß im Betrieb der Walzenpresse die Zwischenräume bzw. Taschen zwischen den Noppenbolzen mit dem zusammengepreßten feinkörnigen Gutmaterial ausgefüllt bleiben, welches einen autogenen Verschleißschutz für die Walzenoberflächen bildet (EP-A-0 443 195, Fig. 4 und 5). Das Aufschweißen solcher vorgefertigter Noppenbolzen ist allerdings nur bei einem aufschweißbaren Bolzenmaterial wie Baustahl oder dergl. möglich. Es wäre auch möglich, die vorgefertigten Noppenbolzen in entsprechende Bohrungen des Walzenkörpers einzulagern und igelförmig aus dem Walzenkörper herausragen zu lassen. Eine solche Lösung wäre durch die spanabhebenden Bohrarbeiten fertigungstechnisch aufwendig, und es wäre die Gefahr nicht ausgeschlossen, daß infolge des hohen Preßdrucks, der über die stiftförmigen Noppenbolzen auf vorhandene Kerbstellen wie insbesondere beim Übergang von der Walzenoberfläche auf die Bolzenmantelfläche einwirkt, Beschädigungen durch Rißbildungen z. B. in der Mantelfläche der Walze entstehen können.It is therefore known to make the surfaces of material bed comminution roller presses wear-resistant by welding a plurality of profiles, such as prefabricated pin-shaped stud bolts, which protrude outward from the roller surface with such a great height and with such a narrow distance from one another, on the roller surfaces are arranged so that the gaps or Pockets between the stud bolts remain filled with the compressed fine-grained material, which forms an autogenous wear protection for the roller surfaces (EP-A-0 443 195, Fig. 4 and 5). However, the welding of such prefabricated stud bolts is only possible with a weldable bolt material such as structural steel or the like. It would also be possible to store the prefabricated stud bolts in corresponding bores in the roller body and to let them protrude from the roller body in a hedgehog shape. Such a solution would be expensive to manufacture due to the machining drilling work, and it would not be excluded that due to the high pressure that acts on the pin-shaped studs on existing notches, such as in particular during the transition from the roller surface to the bolt surface, damage caused by cracking z. B. can arise in the lateral surface of the roller.
Aus der DE-A- 40 38 798 ist ferner bekannt, auf die Walzenoberfläche einer Walzenmühle in Walzenlängsrichtung gesehen abwechselnd Hartwerkstoffstreifen und Weichwerkstoffstreifen aufzuschweißen, wobei die aus Schweißlagen aufgebauten Weichwerkstoffstreifen eine niedrigere Höhe haben als die ebenfalls aus Schweißlagen aufgebauten Hartwerkstoffstreifen, so daß sich in Walzenlängsrichtung gesehen ein wellenförmiges Walzenlängsschnittprofil ergibt, wodurch sich ein gutes Einzugsverhalten für das Mahlgut im Mahlspalt zwischen den beiden Walzen ergeben soll. Abgesehen davon, daß der Aufbau dieser bekannten Panzerung aufwendig ist, schon deswegen, weil vor dem Auftragen einer Auftragslängsschweißraupe auf die jeweils darunterliegende Schweißraupe erst deren Schlackenoberfläche entfernt werden muß, wären mit der Methode des Aufweißens von Längsschweißraupen auf eine Walzenoberfläche nicht stiftförmige Noppenbolzen definierten Durchmessers und definierter Höhe aufbringbar, wie sie sich gemäß EP-A-0 443 195, Figuren 4 und 5 als vorteilhaft zur Erreichung des oben beschriebenen autogenen Verschleißschutzes herausgestellt haben.From DE-A-40 38 798 it is also known to alternately weld hard material strips and soft material strips onto the roller surface of a roller mill in the longitudinal direction of the roller, the soft material strips made of welding layers having a lower height than the hard material strips also made of welding layers, so that they extend in the longitudinal direction of the roller seen a wavy roll longitudinal section profile, which should result in good intake behavior for the regrind in the grinding gap between the two rolls. Apart from the fact that the construction of this known armor is complex, if only because before the application of a longitudinal weld bead to the respective underlying bead, the surface of the slag has to be removed first, the method of welding longitudinal weld beads onto a roller surface would not have pin-shaped stud bolts of a defined diameter and Defined height applicable, as they have been found to be advantageous according to EP-A-0 443 195, Figures 4 and 5 to achieve the above-described autogenous wear protection.
Der Erfindung liegt die Aufgabe zugrunde, insbesondere für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes eine verschleißfeste Oberflächenpanzerung zu schaffen, die möglichst für den autogenen Verschleißschutz geeignet ist und die fertigungstechnisch einfach und auch bei Einwirkung hoher Preßdruckbelastungen ein hohes Standzeitvermögen mit minimierter Rißbildungsgefahr aufweist.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 .
Diese Aufgabe wird gemäß der Erfindung mit den Maßnahmen des Kennzeichnungsteils des Anspruchs 1 gelöst. Vorteilhafte Ausgestaltungen sind in den Unteransprüchen angegeben.This object is achieved according to the invention with the measures of the characterizing part of claim 1. Advantageous refinements are specified in the subclaims.
Charakteristisch für die erfindungsgemäß gefertigte Walzenpanzerung ist, daß die Vielzahl der an der Walzenoberfläche angebrachten Profile wie insbesondere Noppenbolzen nicht aus vorgefertigten Leisten bzw. Stiften bestehen, die dann auf den Walzenmantel aufgeschweißt oder in entsprechende Nuten/Bohrungen des Walzenmantels eingesteckt werden, sondern die Profile/Noppenbolzen werden dadurch erzeugt, daß sie unter Zuhilfenahme einer Kokille formgeschweißt werden, so daß die Profile/Bolzen nur aus dem Austragsschweißmaterial selbst bestehen. Erfindungsgemäß wird auf den Walzengrundkörper bzw. auf deren Bandagen/Segmente eine an die Kontur der Walzenoberfläche angepaßte Kokille aufgelegt, die mit radialen Durchgangsöffnungen wie z. B. Durchgangsbohrungen (oder auch Längsschlitzen) versehen ist, deren Größe und Abstand voneinander dem Feld der Profile wie Noppenbolzen entspricht, und die radialen Durchgangsöffnungen der Kokille werden dann mit Auftragsschweißmaterial ausgefüllt, wonach nach Erstarrung des Schweißmaterials die Kokille von der Walze abgehoben wird.It is characteristic of the roller armor manufactured according to the invention that the large number of profiles attached to the roller surface, such as, in particular, stud bolts, do not consist of prefabricated strips or pins which are then welded onto the roller shell or inserted into corresponding grooves / bores in the roller shell, but rather 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. According to the invention, 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. through holes (or longitudinal slots) is provided, the size and distance from each other like the field of profiles Studs correspond, and the radial through openings of the mold are then filled with build-up welding material, after which the mold is lifted from the roller after the welding material has solidified.
Auf diese Weise bestehen die von der Mantelfläche der Walze vorstehenden Profile wie Profilleisten, insbesondere Noppenbolzen bei der erfindungsgemäßen Oberflächenpanzerung aus durch Auftragsschweißung erschmolzenem und in der Kokillenform erstarrtem Schweißgut bei einer guten Schmelzschweißverbindung zwischen den formgeschweißten Profilen wie Noppenbolzen und dem Walzengrundwerkstoff. Die Gefahr des Auftretens von tief in den Walzengrundkörper verlaufenden Rißbildungen ist dadurch minimiert. Der bzw. die Legierungswerkstoffe der formgeschweißten Profile wie Noppenbolzen weisen zumindest in den radial äußeren Bereichen eine hohe Härte von mehr als 50 HRC, z. B. 60 HRC (Härteprüfung nach Rockwell C) auf.In this way, the profiles protruding from the lateral surface of the roller, such as profile strips, in particular stud bolts in the surface armor according to the invention, 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).
Die Kokille weist nach einem besonderen Merkmal der Erfindung Kühlmediumkanäle auf, die an eine Zu- und Ableitung für das Kühlmedium wie z. B. Wasser anschließbar sind. Durch die insbesondere flüssigkeitsgekühlten Wandungen der Kokille bzw. deren Schweißgießformen lassen sich Gefügemodifikationen im Schweißgut, nämlich in den dann erstarrten Profilen, sowie deren Gefügeeigenschalten wie Härte, Zähigkeit, Verschleißbetändigkeit etc. gezielt einstellen. In jedem Fall sind bei der erfindungsgemäßen Oberflächenpanzerung spanabhebende Vorarbeiten wie Bohren, Nuten usw. vermieden.According to a special feature of the invention, 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.
Die Erfindung und deren weitere Merkmale und Vorteile wird anhand des in der Zeichnung schematisch dargestellten Ausführungsbeispieles näher erläutert.The invention and its further features and advantages are explained in more detail with reference to the exemplary embodiment shown schematically in the drawing.
Die Zeichnung zeigt schematisch im Ausschnitt die Oberseite des Mantels einer Walze, die mit der erfindungsgemäßen Oberflächenpanzerung versehen wird. Dazu wird auf die Oberfläche des Walzengtundkörpers (10) eine an die Kontur der Walzenoberfläche angepaßte und z. B. aus Kupfer oder einer Kupferlegierung bestehende Kokille (11) aufgelegt, die im Ausführungsbeispiel balkenförmig ist und sich z. B. über die ganze Breite der Walzenoberfläche erstrecken kann. Die Kokille (11) ist mit radialen Durchgangsbohrungen (12, 13, 14 etc.) versehen, deren Größe und Abstand voneinander dem Feld der Noppenbolzen entspricht. Die Kokille (11) weist Kühlwasserkanäle (15, 16) auf, an die jeweils eine Zu-und Ableitung für das Kühlwasser anschließbar ist, welches die Kokille längs durchströmt. Die radialen Durchgangsöffnungen (12, 13, 14 etc.) werden mit Auftragsschweißmaterial ausgefüllt, nach Erstarrung des Schweißmaterials wird die Kokille (11) von der Walzenoberfläche (10) abgehoben, und die auf diese Weise entstandenen formgeschweißten Noppenbolzen (17) bleiben mit einer sehr festen Schmelzschweißverbindung (18) auf der Walzenoberfläche (10) stehen.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. For this purpose, 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 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).
Die Höhe der Noppenbolzen (17) kann z. B. 8 bis 10 mm und deren Durchmesser z. B. 15 mm betragen. Benachbarte Noppenbolzen (17) werden in einem so engen Abstand voneinander von kleiner etwa 40 mm angeordnet, so daß die zwischen den Bolzen gebildeten Zwischenräume bzw. Taschen so eng sind, daß im Gutbettzerkleinerungs-Betrieb diese Zwischenräume bzw. Taschen zwischen den Bolzen mit zusammengepreßtem feinkörnigem Gut ausgefüllt sind, das während der Walzenumdrehungen in den Taschen als autogener Walzenverschleißschutz verbleibt.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.
Die Durchgangsbohrungen (12, 13, 14 etc.) der Kokille (11) können sich mit Vorteil mit kleinem Winkel konisch von oben nach unten erweitern, um das Abheben der Kokille (11) nach dem Formschweißvorgang von der Walzenoberfläche (10) zu erleichtern.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.
Als Material für die formgeschweißten Profile wie Noppen (17) etc. werden vorzugsweise verschleißbeständige Legierungen in Form von Fülldrähten, Schweißstäben, Auftragsschweißpulver usw. verwendet, und es kann auch das Plasmapulverauftragsschweißen sowie das Plasmaauftragsschweißen mit externer Drahtzufuhr eingesetzt werden. Das Auftrags-Formschweißen kann manuell oder roboterisiert durchgeführt werden. Ferner können die eingesetzten Auftragsschweißlegierungen variiert werden. Es besteht z. B. die Möglichkeit, die radial äußeren Auftragsschweißschichten bzw. Schweißlegierungen der formgeschweißten Bolzen aus einem anderen (härteren) Legierungswerkstoff aufzubauen als die radial inneren Auftragsschweißschichten pro Noppenbolzen.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. Furthermore, 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.
Die Kokille (11) besteht vorzugsweise aus einem Werkstoff ausreichend hoher Wärmeleitfähigkeit, Warmfestigkeit und eines ausreichend hohen Schmelzpunktes, z. B. aus Kupfer oder aus einer Kupferlegierung. In Sonderfällen wie z. B. bei der Reparatur beschädigter formgeschweißter Noppenbolzen kann die Kokille auch aus Keramikmaterial bestehen.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.
Die erfindungsgemäße verschleißfeste Oberflächenpanzerung von Walzen ist nicht auf Noppenbolzen als Profile beschränkt. Die von der Walzenoberfläche (10) nach außen vorstehenden Profile können auch stegförmige bzw. leistenförmige Körper mit einem etwa rechteckigen Querschnitt sein. In diesem Falle bestehen die Durchgangsöffnungen der Kokille (11) nicht aus Durchgangsbohrungen, sondern aus entsprechenden Durchgangsschlitzen, die mit Schweißgut ausgefüllt werden, nach dessen Erstarrung formgeschweißte stegförmige Walzenprofile gebildet sind.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. In this case, 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.
Claims (3)
- A method to yield a wear-resistant surface reinforcement for the rollers of high-pressure roller presses for the pressure-comminution of granular material, with a plurality of outwardly-projecting profiles arranged at a distance apart from one another on the roller surface, especially stud-type bolts,
characterised in that a chill mould (11) matched to the contours of the roller surface is laid on the basic body (10) of the roller or on its linings/segments and is provided with radial through-openings such as through-holes (12, 13, 14) which correspond in size and distance apart to the field of profiles such as stud-type bolts (17) and the radial through-openings (12, 13, 14) of the chill mould are filled with build-up weld materials, after which once the weld material has set the chill mould (11) is lifted off the roller (10). - A method according to claim 1, characterised in that the chill mould (11) is provided with coolant channels (15, 16) and can be connected to a coolant delivery and drain line.
- A method according to claims 1 and 2, characterised in that the chill mould (11) is manufactured from copper or a copper alloy.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE4324074 | 1993-07-17 | ||
| DE4324074A DE4324074A1 (en) | 1993-07-17 | 1993-07-17 | Wear-resistant surface armor for the rollers of high-pressure roller presses and method for building such a roller armor |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| EP0634217A1 EP0634217A1 (en) | 1995-01-18 |
| EP0634217B1 true EP0634217B1 (en) | 1997-09-24 |
Family
ID=6493118
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| EP94110787A Expired - Lifetime EP0634217B1 (en) | 1993-07-17 | 1994-07-12 | Procedure for the manufacture of a wear-resistant surface coating for rollers of high pressure roller mills |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US5601520A (en) |
| EP (1) | EP0634217B1 (en) |
| AT (1) | ATE158517T1 (en) |
| DE (2) | DE4324074A1 (en) |
| DK (1) | DK0634217T3 (en) |
| ZA (1) | ZA945082B (en) |
Families Citing this family (14)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE59407047D1 (en) * | 1993-07-20 | 1998-11-12 | Koeppern & Co Kg Maschf | ROLL PRESSES, IN PARTICULAR FOR THE CRUSHING OF STRONG ABRASIVE SUBSTANCES |
| DE19506600A1 (en) * | 1995-02-24 | 1996-08-29 | Krupp Polysius Ag | Roll, process for producing a roll and material bed roll mill |
| DE19618143A1 (en) * | 1996-05-06 | 1997-11-13 | Krupp Polysius Ag | Roller mill grinding roller with projecting anchored pins for longer grinding time |
| 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 |
| DE19707130A1 (en) * | 1997-02-22 | 1998-08-27 | Kloeckner Humboldt Wedag | Surface armouring for rollers used in rolling press for granular material |
| DK1077087T3 (en) | 1999-08-14 | 2003-08-04 | Kloeckner Humboldt Wedag | Grinding roll and method for its preparation |
| DE102004025175B4 (en) * | 2004-05-21 | 2006-07-06 | Kerr-Mcgee Pigments Gmbh | High pressure grinding roll |
| DE102006010042A1 (en) * | 2006-03-04 | 2007-09-06 | Khd Humboldt Wedag Gmbh | Hard body for the autogenous wear protection of roll surfaces |
| CN100441367C (en) * | 2006-12-20 | 2008-12-10 | 王荫森 | Production process of grinder roll by using electric spraying |
| DE102007012102A1 (en) * | 2007-03-13 | 2008-09-18 | Polysius Ag | Process for reprocessing a used grinding roller |
| DE102009039928B3 (en) * | 2009-08-17 | 2011-03-03 | Khd Humboldt Wedag Gmbh | Roll press screen armoring with ring-shaped bolts and method for renewing the reinforcement of this grid armor |
| US9476304B2 (en) | 2013-05-10 | 2016-10-25 | Caterpillar Inc. | Laser casting blade repair |
| CN104084259B (en) * | 2014-08-01 | 2017-02-22 | 张珂 | Roller and rolling device thereof |
| CN104174457B (en) * | 2014-08-06 | 2017-04-05 | 成都大宏立机器股份有限公司 | Roller of high-pressure roller mill guard ring, roller and assembly method |
Family Cites Families (22)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4915A (en) * | 1847-01-01 | Improvement in uterine supporters | ||
| US412558A (en) * | 1889-10-08 | Surface for grinding and crushing | ||
| FR736225A (en) * | 1931-08-10 | 1932-11-21 | Bretagne Atel Chantiers | Process for the use of electric arc welding, with a view to obtaining a deposit of metal of determined shapes and dimensions |
| DE1061599B (en) * | 1954-07-02 | 1959-07-16 | Unipulver Ltd | Rotor for grinding devices |
| US3156968A (en) * | 1962-03-22 | 1964-11-17 | Jr William D White | Pressure roller and method of manufacture |
| DE1284266B (en) * | 1964-08-22 | 1968-11-28 | Doerries Gmbh | Grinding tools for pin mills for crushing, shredding, grinding and / or other treatment of goods, in particular goods for paper, cardboard or cardboard manufacture |
| CH479395A (en) * | 1968-03-27 | 1969-10-15 | H Geiger Maschf | Roller press, especially for screenings |
| US3594533A (en) * | 1968-07-12 | 1971-07-20 | Mckay Co | Welding apparatus |
| SE324991B (en) * | 1969-07-08 | 1970-06-15 | Sandvikens Jernverks Ab | |
| DE2704605B1 (en) * | 1977-02-04 | 1978-01-19 | Wahl Verschleiss Tech | Wear resistant plate for use on machines - has base plate formed with profiled grooves to hold wear resistant surface laid on top |
| US4066862A (en) * | 1977-05-27 | 1978-01-03 | Tippmann Eugene R | Method of building-up a layer of metal on a metal surface |
| 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 |
| DE3621747A1 (en) * | 1986-06-28 | 1988-01-07 | Werner Schatz | Process for the production of sheets armoured in particular against wear by abrasion |
| JPS63143949A (en) * | 1986-12-09 | 1988-06-16 | アイエヌジ商事株式会社 | Crushing surface member used for crusher |
| DD284611A5 (en) * | 1988-09-22 | 1990-11-21 | Kloeckner-Humboldt-Deutz Aktiengesellschaft,De | WEAR-RESISTANT ROLL COATING AND METHOD OF STRUCTURING ROLL COATING |
| 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 |
| DE3843173A1 (en) * | 1988-12-22 | 1990-07-05 | Kloeckner Humboldt Deutz Ag | WEAR-RESISTANT SURFACE ARMORING FOR THE ROLLS OF ROLLING MACHINES, IN PARTICULAR HIGH PRESSURE ROLLING PRESSES |
| DE3926883A1 (en) * | 1989-08-16 | 1991-02-21 | Kloeckner Humboldt Deutz Ag | WEAR-RESISTANT SURFACE ARMORING FOR THE ROLLS OF ROLLING MACHINES, ESPECIALLY HIGH PRESSURE ROLLING PRESSES |
| 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 |
| 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 |
| DE4038798A1 (en) * | 1990-12-05 | 1992-06-11 | Krupp Polysius Ag | Roller mill - has two rollers circulating in opposite directions pressed together under high pressure and each with cover forming grinding surface |
| DE4210395A1 (en) * | 1992-03-30 | 1993-10-07 | Krupp Polysius Ag | Roller mill |
-
1993
- 1993-07-17 DE DE4324074A patent/DE4324074A1/en not_active Withdrawn
-
1994
- 1994-07-11 US US08/273,479 patent/US5601520A/en not_active Expired - Fee Related
- 1994-07-12 DK DK94110787.2T patent/DK0634217T3/en active
- 1994-07-12 DE DE59404133T patent/DE59404133D1/en not_active Expired - Fee Related
- 1994-07-12 EP EP94110787A patent/EP0634217B1/en not_active Expired - Lifetime
- 1994-07-12 AT AT94110787T patent/ATE158517T1/en not_active IP Right Cessation
- 1994-07-13 ZA ZA945082A patent/ZA945082B/en unknown
Also Published As
| Publication number | Publication date |
|---|---|
| ZA945082B (en) | 1995-03-16 |
| DE4324074A1 (en) | 1995-01-19 |
| ATE158517T1 (en) | 1997-10-15 |
| US5601520A (en) | 1997-02-11 |
| DK0634217T3 (en) | 1998-03-30 |
| EP0634217A1 (en) | 1995-01-18 |
| DE59404133D1 (en) | 1997-10-30 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| EP0634217B1 (en) | Procedure for the manufacture of a wear-resistant surface coating for rollers of high pressure roller mills | |
| EP1684907B1 (en) | Grinding roll for pressure grinding granular material | |
| EP0563564B1 (en) | Roller mill producing a bed of material | |
| EP0443195B1 (en) | Abrasion-resistant cladding for the roller surfaces of roller machines, in particular high-pressure roller presses | |
| DE102009050636B4 (en) | Grinding roller and ring bandage for a grinding roller | |
| EP1077087A1 (en) | Milling roller and method for its manufacturing | |
| EP0699479B1 (en) | Wear resistant roller for use in high pressure roller mills for pressure milling of granular material | |
| EP0659108B1 (en) | Roller presses, in particular for crushing strongly abrasive substances | |
| EP1502650B1 (en) | Milling roller | |
| EP0728523B1 (en) | Roller, method for manufacturing a roller, and material bed roller mill | |
| EP2524071B1 (en) | Tool for galvanically coating sliding bearings | |
| EP1804973B1 (en) | Press roller annular casing and method for production thereof | |
| DE2354844C2 (en) | Grinding bowl lining | |
| WO2008098951A1 (en) | Armoring the surfaces of press rolls of rolling presses | |
| DE3926883A1 (en) | WEAR-RESISTANT SURFACE ARMORING FOR THE ROLLS OF ROLLING MACHINES, ESPECIALLY HIGH PRESSURE ROLLING PRESSES | |
| EP0872280B1 (en) | Wear-resistant surface coating for rollers of roller mills for pressure milling of granular material | |
| DE4235298A1 (en) | Grinding roll mfr. by build-up welding of anti-wear layer - with the anti-wear layer made up of separate blocks | |
| EP0846496A1 (en) | Wear-resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material | |
| DE10014836A1 (en) | Milling drum and process for its manufacture | |
| EP0312744B1 (en) | Internally cooled roll and method for manufacturing the same | |
| DE4422699A1 (en) | Roll for high=pressure roll press | |
| DE4235499A1 (en) | Applicn of hard wear-resistant layer onto a grinding roll - with pockets in the roll edge regions for retention of the material being ground. | |
| EP1178253A1 (en) | Composite pipe with flange | |
| DE4235297A1 (en) | Grinding roll mfr. by build-up welding - with the end regions of the hard anti-wear layer of the roll separated from its central region | |
| DE4017183A1 (en) | Wear resistant armouring for rolls - using rings with interlocking edge profile |
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 |
|
| 17P | Request for examination filed |
Effective date: 19941107 |
|
| AK | Designated contracting states |
Kind code of ref document: A1 Designated state(s): AT CH DE DK ES FR IT LI SE |
|
| 17Q | First examination report despatched |
Effective date: 19960402 |
|
| GRAG | Despatch of communication of intention to grant |
Free format text: ORIGINAL CODE: EPIDOS AGRA |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| RAP1 | Party data changed (applicant data changed or rights of an application transferred) |
Owner name: DEUTZ AKTIENGESELLSCHAFT |
|
| GRAH | Despatch of communication of intention to grant a patent |
Free format text: ORIGINAL CODE: EPIDOS IGRA |
|
| GRAA | (expected) grant |
Free format text: ORIGINAL CODE: 0009210 |
|
| AK | Designated contracting states |
Kind code of ref document: B1 Designated state(s): AT CH DE DK ES FR IT LI SE |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: IT Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRE;WARNING: LAPSES OF ITALIAN PATENTS WITH EFFECTIVE DATE BEFORE 2007 MAY HAVE OCCURRED AT ANY TIME BEFORE 2007. THE CORRECT EFFECTIVE DATE MAY BE DIFFERENT FROM THE ONE RECORDED.SCRIBED TIME-LIMIT Effective date: 19970924 Ref country code: FR Free format text: LAPSE BECAUSE OF FAILURE TO SUBMIT A TRANSLATION OF THE DESCRIPTION OR TO PAY THE FEE WITHIN THE PRESCRIBED TIME-LIMIT Effective date: 19970924 Ref country code: ES Free format text: THE PATENT HAS BEEN ANNULLED BY A DECISION OF A NATIONAL AUTHORITY Effective date: 19970924 |
|
| REF | Corresponds to: |
Ref document number: 158517 Country of ref document: AT Date of ref document: 19971015 Kind code of ref document: T |
|
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: EP |
|
| REF | Corresponds to: |
Ref document number: 59404133 Country of ref document: DE Date of ref document: 19971030 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: SE Effective date: 19971224 |
|
| EN | Fr: translation not filed | ||
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: T3 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: AT Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980712 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: LI Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 Ref country code: CH Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 19980731 |
|
| PLBE | No opposition filed within time limit |
Free format text: ORIGINAL CODE: 0009261 |
|
| STAA | Information on the status of an ep patent application or granted ep patent |
Free format text: STATUS: NO OPPOSITION FILED WITHIN TIME LIMIT |
|
| 26N | No opposition filed | ||
| REG | Reference to a national code |
Ref country code: CH Ref legal event code: PL |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DE Payment date: 19990811 Year of fee payment: 6 |
|
| PGFP | Annual fee paid to national office [announced via postgrant information from national office to epo] |
Ref country code: DK Payment date: 20000711 Year of fee payment: 7 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DK Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010301 |
|
| PG25 | Lapsed in a contracting state [announced via postgrant information from national office to epo] |
Ref country code: DE Free format text: LAPSE BECAUSE OF NON-PAYMENT OF DUE FEES Effective date: 20010501 |
|
| REG | Reference to a national code |
Ref country code: DK Ref legal event code: EBP |