EP0699479A1 - Wear resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material - Google Patents

Wear resistant surface coating for rollers of high pressure roller mills for pressure milling of granular material Download PDF

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Publication number
EP0699479A1
EP0699479A1 EP95113514A EP95113514A EP0699479A1 EP 0699479 A1 EP0699479 A1 EP 0699479A1 EP 95113514 A EP95113514 A EP 95113514A EP 95113514 A EP95113514 A EP 95113514A EP 0699479 A1 EP0699479 A1 EP 0699479A1
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EP
European Patent Office
Prior art keywords
bolt part
roller
radially outer
radially
radially inner
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Granted
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EP95113514A
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German (de)
French (fr)
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EP0699479B1 (en
Inventor
Jakob Ansén
Frank Fischer-Helwig
Ludger Alsmann
Michael Dr. Wollner
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Deutz AG
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Kloeckner Humboldt Deutz AG
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    • 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 wear-resistant surface armor for the rollers of high-pressure roller presses for pressure comminution of granular material, with a large number of stud bolts welded onto the roller surface at a distance from one another and projecting outwards, which form pockets between them for receiving compressed fine-grained material.
  • 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. can be crushed in a material bed compressed between the two roller surfaces when an extremely high pressure is applied. It is understood that the roller surfaces are subjected to extremely high stress and wear.
  • the stud bolts can be welded on in a technically simple manner with the help of a so-called stud welding gun, which lifts the stud from the workpiece using a lifting magnet, creating an arc that melts the stud end and the base material, after which the stud is pressed into the molten pool .
  • the stud bolts are therefore connected without welding filler by melting the abutting surfaces and pressing.
  • the welding of such prefabricated stud bolts is only possible with a weldable bolt material.
  • the service life of such studded bolts is therefore limited when used on the extremely highly stressed roller surfaces of material bed crushing roller presses.
  • To increase the bolt strength it has also already been proposed (DE-A-41 32 474 Fig.
  • the invention has for its object to provide a wear-resistant surface armor suitable for autogenous wear protection with stud bolts for the rollers of high-pressure roller presses for pressure comminution of granular goods, which have a long service life even when exposed to high pressure loads.
  • the rollers of high-pressure roller presses for pressure comminution of granular material that two-part stud bolts are welded onto the roller surface, the stud bolts each consisting of a radially inner bolt part that can be welded well to the roller surface and a radial part that protects the inner bolt part outer harder bolt part are composed, the latter consisting of a hard material and is integrally connected to the radially inner bolt part.
  • the radially outer bolt part can advantageously consist of hard metal and / or ceramic material and / or hard welding materials, and it has a hardness of more than 52 HRC (Rockwell C hardness test), in particular greater than 58 HRC.
  • the very hard material of the radially outer bolt part increases the service life of the grid-armored material bed comminution roller press roll according to the invention.
  • the radially outer bolt part can be integrally connected to the radially inner bolt part by friction pressure welding or arc welding.
  • the radially outer bolt part can, however, also be produced by powder metallurgy and integrally sintered onto the radially inner bolt part.
  • the radially outer bolt part and the radially inner bolt part are a prefabricated unit which can then be welded well to the roll surface via the radially inner bolt part. Manufacturing steps such as drilling, pressing studs into holes etc. are avoided with the surface armor according to the invention.
  • FIG. 1 shows a prefabricated cylindrical two-part studded stud before it is used for the surface armoring of the material bed comminution high-pressure roller press roll of FIG. 2.
  • the press roller consists of a roller base body (10), to which a roller jacket (11) forming the outer peripheral region is detachably connected (clamped), on the surface (12) of which a plurality of two-part bolts of FIG. 1 is welded on.
  • the metallic roller shell (11) can consist of a self-contained bandage ring or can be composed of individual segments releasably braced with the roller base body (10).
  • the two-part studs can also be welded directly onto a roller body (without roller shell).
  • the prefabricated stud bolts each consist of a radially inner (lower) bolt part (13) which can be easily welded to the roller surface (12) and a radially outer, harder bolt part (14), which protects the radially inner bolt part (13), the latter consists of hard materials and is integrally connected to the radially inner bolt part (13).
  • the radially outer bolt part (14) can consist of hard metal and / or ceramic material or z. B. also produced by powder metallurgy and sintered onto the radially inner bolt part (13).
  • the friction-pressure welding with rotation of at least one of the bolt bodies, the arc welding, also in the plasma arc etc. can be used as the connection technique.
  • the separating surface (15) between the lower bolt part (13) and the upper bolt part (14) does not have to lie plane-parallel to the radially outer surface of the bolt, but it can e.g. B. similar to the lower surface (16) of the lower bolt part (13) be conical.
  • the two-part stud bolts of FIG. 1 are advantageously welded onto the roller surface (12) in the stud welding process.
  • the two-part Insert studs into the holder of a stud welding gun and the welding gun is then placed on the roller surface (12).
  • a lifting magnet in the welding gun then lifts the two-part stud from the roller surface (12), whereby an arc is created by means of a stroke ignition, which locally melts the lower end of the radially inner (lower) bolt part (13) and the roller surface (12).
  • the lifting mechanism of the stud welding gun is then automatically switched off and the two-part stud is pressed into the liquid weld pool by means of spring pressure, which creates a homogeneous, firm connection between the roller surface (12) and the studded stud, the latter being extremely hard due to the protective radially outer stud part (14) has a long service life.
  • the hard material of the radially outer bolt part (14) has a hardness of more than 52 HRC (hardness test according to Rockwell C), in particular greater than 58 HRC.
  • the height of the bolts projecting radially outward from the roller surface (12) is approximately greater than 5 mm, for. B. 8 to 10 mm, with a bolt diameter of z. B. 15 mm.
  • Adjacent studs are so close to each other from z. B. less than about 40 mm welded that the gaps or pockets formed between the bolts in the area of the roller surface (12) are so narrow that these gaps or pockets (17) between the bolts with and in the material bed crushing operation of the press roller the same compressed and fine-grained but highly compacted material resulting from material bed comminution, which remains in these pockets during the roller revolutions, d. H.

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  • Engineering & Computer Science (AREA)
  • Food Science & Technology (AREA)
  • Crushing And Grinding (AREA)
  • Crushing And Pulverization Processes (AREA)

Abstract

The surface amour is in the form of spaced protruding pins which are welded to the roll surface (12), and form pockets (17) between them for accommodation of pressed fine grained materials. The pins are made up of two parts (13,14) bonded to one another. The part (13) is made of a material which can be easily welded to the roll surface (12), while the part (14), which serves for the protection of the part (13), is made of hard material.

Description

Die Erfindung betrifft eine verschleißfeste Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes, mit einer Vielzahl von auf die Walzenoberfläche mit Abstand voneinander aufgeschweißten und nach außen vorstehenden Noppenbolzen, die zwischen sich Taschen zur Aufnahme von zusammengepreßtem feinkörnigen Gut bilden.The invention relates to a wear-resistant surface armor for the rollers of high-pressure roller presses for pressure comminution of granular material, with a large number of stud bolts welded onto the roller surface at a distance from one another and projecting outwards, which form pockets between them for receiving compressed fine-grained material.

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. 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. can be crushed in a material bed compressed between the two roller surfaces when an extremely high pressure is applied. It is understood that the roller surfaces are subjected to extremely high stress and wear.

Es ist daher bekannt, die Oberflächen von Gutbettzerkleinervngs-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 der Noppenbolzen kann dabei in fertigungstechnisch einfacher Weise mit Hilfe einer sogenannten Bolzenschweißpistole durchgeführt werden, die über einen Hubmagnet den Bolzen vom Werkstück abhebt, wobei ein Lichtbogen entsteht, der das Bolzenende und den Grundwerkstoff aufschmilzt, wonach der Bolzen in das flüssige Schmelzbad gedrückt wird. Die Noppenbolzen werden also ohne Schweißzusatz durch Anschmelzen der Stoßflächen und Anpressen verbunden. Das Aufschweißen solcher vorgefertigter Noppenbolzen ist allerdings nur bei einem aufschweißbaren Bolzenmaterial möglich. Daher ist die Standzeit solcher Noppenbolzen angewendet bei den außerordentlich hoch beanspruchten Walzenoberflächen von Gutbettzerkleinerungs-Walzenpressen begrenzt. Zur Erhöhung der Bolzenfestigkeit ist auch schon vorgeschlagen worden (DE-A-41 32 474 Fig. 6), die Noppenbolzen in Sackloch-Bohrungen des Walzenkörpers von Gutbettzerkleinerungs-Walzenpressen einzulagern, um sie igelförmig aus den Bohrungen des Walzenkörpers herausragen zu lassen. Es ist aber fertigungstechnisch verhältnismäßig aufwendig, die Noppenbolzen in passende Sackloch-Bohrungen des Walzenkörpers einzupressen, einzuschweißen, einzulöten, einzuschrauben, einzuschrumpfen oder mit einer sonstigen Verbindungstechnik fest im Walzenkörper zu verankern. Außerdem kann es Mühe machen, im Verschleißfall die Noppenbolzen aus ihren Sackloch-Bohrungen wieder zu entfernen und durch neue Bolzen zu ersetzen.It is therefore known to make the surfaces of Gutbettzerkleinervngs roller presses wear-resistant by welding onto the roller surfaces a multitude 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 are arranged that the gaps or pockets between the stud bolts with the compressed fine-grained in the operation of the roller press Good material remains filled, which forms an autogenous wear protection for the roller surfaces (EP-A-0 443 195, Fig. 4 and 5). The stud bolts can be welded on in a technically simple manner with the help of a so-called stud welding gun, which lifts the stud from the workpiece using a lifting magnet, creating an arc that melts the stud end and the base material, after which the stud is pressed into the molten pool . The stud bolts are therefore connected without welding filler by melting the abutting surfaces and pressing. The welding of such prefabricated stud bolts is only possible with a weldable bolt material. The service life of such studded bolts is therefore limited when used on the extremely highly stressed roller surfaces of material bed crushing roller presses. To increase the bolt strength, it has also already been proposed (DE-A-41 32 474 Fig. 6) to store the stud bolts in blind holes in the roller body of material bed comminution roller presses in order to have them protrude in a hedgehog shape from the holes in the roller body. However, it is relatively complex in terms of manufacturing technology to press, weld, solder, screw in, shrink in, or anchor the studded bolts in suitable blind holes in the roller body, or to firmly anchor them in the roller body using other connection technology. It can also be difficult to remove the stud bolts from their blind holes in the event of wear and to replace them with new bolts.

Der Erfindung liegt die Aufgabe zugrunde, für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes eine verschleißfeste für den autogenen Verschleißschutz geeignete Oberflächenpanzerung mit Noppenbolzen zu schaffen, die auch bei Einwirkung hoher Preßdruckbelastungen ein hohes Standzeitvermögen aufweisen.The invention has for its object to provide a wear-resistant surface armor suitable for autogenous wear protection with stud bolts for the rollers of high-pressure roller presses for pressure comminution of granular goods, which have a long service life even when exposed to high pressure loads.

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 erfindungsgemäße Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes ist, daß auf die Walzenoberfläche zweiteilige Noppenbolzen aufgeschweißt sind, wobei die Noppenbolzen jeweils aus einem radial inneren mit der Walzenoberfläche gut verschweißbaren Bolzenteil und aus einem den inneren Bolzenteil schützend abdeckenden radial äußeren härteren Bolzenteil zusammengesetzt sind, welch letzterer aus einem Hartstoff besteht und stoffschlüssig mit dem radial inneren Bolzenteil verbunden ist. Der radial äußere Bolzenteil kann dabei mit Vorteil aus Hartmetall und/oder aus Keramikmaterial und/oder aus Hartschweißstoffen bestehen, und er weist eine Härte von mehr als 52 HRC (Härteprüfung nach Rockwell C), insbesondere größer 58 HRC auf. Das sehr harte Material des radial äußeren Bolzenteils erhöht bei der erfindungsgemäßen rastergepanzerten Gutbettzerkleinerungs-Rollenpressenwalze deren Standzeitvermögen.It is characteristic of the surface armor according to the invention for the rollers of high-pressure roller presses for pressure comminution of granular material that two-part stud bolts are welded onto the roller surface, the stud bolts each consisting of a radially inner bolt part that can be welded well to the roller surface and a radial part that protects the inner bolt part outer harder bolt part are composed, the latter consisting of a hard material and is integrally connected to the radially inner bolt part. The radially outer bolt part can advantageously consist of hard metal and / or ceramic material and / or hard welding materials, and it has a hardness of more than 52 HRC (Rockwell C hardness test), in particular greater than 58 HRC. The very hard material of the radially outer bolt part increases the service life of the grid-armored material bed comminution roller press roll according to the invention.

Der radial äußere Bolzenteil kann mit dem radial inneren Bolzenteil durch Reibungspreßschweißung oder Lichtbogenschweißung stoffschlüssig verbunden sein. Der radial äußere Bolzenteil kann aber auch pulvermetallurgisch hergestellt und auf den radial inneren Bolzenteil stoffschlüssig aufgesintert sein. In jedem Fall ist es fertigungstechnisch vorteilhaft, wenn der radial äußere Bolzenteil und der radial innere Bolzenteil eine vorgefertigte Einheit sind, die sich dann über den radial inneren Bolzenteil gut mit der Walzenoberfläche verschweißen läßt. Fertigungsschritte wie Bohren, Einpressen von Noppenbolzen in Bohrungen etc. sind bei der erfindungsgemäßen Oberflächenpanzerung vermieden.The radially outer bolt part can be integrally connected to the radially inner bolt part by friction pressure welding or arc welding. The radially outer bolt part can, however, also be produced by powder metallurgy and integrally sintered onto the radially inner bolt part. In any case, it is technically advantageous if the radially outer bolt part and the radially inner bolt part are a prefabricated unit which can then be welded well to the roll surface via the radially inner bolt part. Manufacturing steps such as drilling, pressing studs into holes etc. are avoided with the surface armor according to the invention.

Die Erfindung und deren weitere Merkmale und Vorteile werden anhand der in den Figuren schematisch dargestellten Ausführungsbeispiele näher erläutert.The invention and its further features and advantages are explained in more detail with reference to the exemplary embodiments shown schematically in the figures.

Es zeigt:

Fig. 1:
einen vorgefertigten erfindungsgemäßen zweiteiligen Noppenbolzen für die Oberflächenpanzerung von Druckzerkleinerungs-Pressenwalzen, und
Fig. 2:
ausschnittsweise einen Vertikalschnitt quer zur Drehachse einer erfindungsgemäßen rastergepanzerten Walzenpressenwalze mit Einsatz der Noppenbolzen der Fig. 1.
It shows:
Fig. 1:
a prefabricated two-piece studded bolt according to the invention for the surface armoring of pressure reduction press rolls, and
Fig. 2:
Detail of a vertical section transverse to the axis of rotation of a grid-armored roll press roll according to the invention with the use of the stud bolts of FIG. 1.

Fig. 1 zeigt einen vorgefertigten zylindrischen zweiteiligen Noppenbolzen, bevor dieser zur Oberflächenpanzerung der Gutbettzerkleinerungs-Hochdruck-Walzenpressenwalze der Fig. 2 eingesetzt wird. Nach Fig. 2 besteht die Pressenwalze aus einem Walzengrundkörper (10), mit dem ein den äußeren Umfangsbereich bildender Walzenmantel (11) lösbar verbunden (verspannt) ist, auf dessen Oberfläche (12) eine Vielzahl von mit Abstand voneinander angeordneter zweiteiliger Bolzen der Fig. 1 aufgeschweißt ist. Der metallische Walzenmantel (11) kann aus einem in sich geschlossenen Bandagenring bestehen oder aus einzelnen mit dem Walzengrundkörper (10) lösbar verspannten Segmenten zusammengesetzt sein. Die zweiteiligen Noppenbolzen können auch unmittelbar auf einen Walzenkörper (ohne Walzenmantel) aufgeschweißt sein.FIG. 1 shows a prefabricated cylindrical two-part studded stud before it is used for the surface armoring of the material bed comminution high-pressure roller press roll of FIG. 2. According to FIG. 2, the press roller consists of a roller base body (10), to which a roller jacket (11) forming the outer peripheral region is detachably connected (clamped), on the surface (12) of which a plurality of two-part bolts of FIG. 1 is welded on. The metallic roller shell (11) can consist of a self-contained bandage ring or can be composed of individual segments releasably braced with the roller base body (10). The two-part studs can also be welded directly onto a roller body (without roller shell).

Nach Fig. 1 bestehen die vorgefertigten Noppenbolzen jeweils aus einem radial inneren (unteren) mit der Walzenoberfläche (12) gut verschweißbaren Bolzenteil (13) und aus einem den radial inneren Bolzenteil (13) schützend abdeckenden radial äußeren härteren Bolzenteil (14), welch letzterer aus Hartstoffen besteht und stoffschlüssig mit dem radial inneren Bolzenteil (13) verbunden ist. Der radial äußere Bolzenteil (14) kann aus Hartmetall und/oder Keramikmaterial bestehen oder z. B. auch pulvermetallurgisch hergestellt und auf den radial inneren Bolzenteil (13) aufgesintert sein. Zur stoffschlüssigen Verbindung des radial äußeren Bolzenteils (14) mit dem radial inneren Bolzenteil (13) kann als Verbindungstechnik die Reibungspreßschweißung mit Rotation wenigstens eines der Bolzenkörper, die Lichtbogenschweißung, auch im Plasmalichtbogen etc. eingesetzt werden. Die Trennfläche (15) zwischen unterem Bolzenteil (13) und oberem Bolzenteil (14) muß nicht planparallel zur radial außen liegenden Oberfläche des Bolzens liegen, sondern sie kann z. B. ähnlich wie die Unterfläche (16) des unteren Bolzenteils (13) kegelmantelförmig ausgebildet sein. Die zweiteiligen Noppenbolzen der Fig. 1 werden mit Vorteil im Bolzenschweißverfahren auf die Walzenoberfläche (12) aufgeschweißt. Dazu wird der zweiteilige Noppenbolzen in die Halterung einer Bolzenschweißpistole eingesetzt und die Schweißpistole wird dann auf die Walzenoberfläche (12) aufgesetzt. Ein in der Schweißpistole vorhandener Hubmagnet hebt dann den zweiteiligen Noppenbolzen von der Walzenoberfläche (12) ab, wobei vermittels einer Hubzündung ein Lichtbogen entsteht, der das untere Ende des radial inneren (unteren) Bolzenteils (13) sowie die Walzenoberfläche (12) lokal aufschmilzt. Danach wird der Hubmechanismus der Bolzenschweißpistole automatisch abgeschaltet und der zweiteilige Bolzen mittels Federdruckes in das flüssige Schmelzbad gepreßt, wodurch eine homogene feste Verbindung zwischen der Walzenoberfläche (12) und dem Noppenbolzen entsteht, welch letzterer infolge des schützenden radial äußeren Bolzenteils (14) großer Härte ein hohes Standzeitvermögen aufweist. Der Hartstoff des radial äußeren Bolzenteils (14) weist dabei eine Härte von mehr als 52 HRC (Härteprüfung nach Rockwell C), insbesondere größer 58 HRC auf.According to Fig. 1, the prefabricated stud bolts each consist of a radially inner (lower) bolt part (13) which can be easily welded to the roller surface (12) and a radially outer, harder bolt part (14), which protects the radially inner bolt part (13), the latter consists of hard materials and is integrally connected to the radially inner bolt part (13). The radially outer bolt part (14) can consist of hard metal and / or ceramic material or z. B. also produced by powder metallurgy and sintered onto the radially inner bolt part (13). For the cohesive connection of the radially outer bolt part (14) with the radially inner bolt part (13), the friction-pressure welding with rotation of at least one of the bolt bodies, the arc welding, also in the plasma arc etc. can be used as the connection technique. The separating surface (15) between the lower bolt part (13) and the upper bolt part (14) does not have to lie plane-parallel to the radially outer surface of the bolt, but it can e.g. B. similar to the lower surface (16) of the lower bolt part (13) be conical. The two-part stud bolts of FIG. 1 are advantageously welded onto the roller surface (12) in the stud welding process. This will be the two-part Insert studs into the holder of a stud welding gun and the welding gun is then placed on the roller surface (12). A lifting magnet in the welding gun then lifts the two-part stud from the roller surface (12), whereby an arc is created by means of a stroke ignition, which locally melts the lower end of the radially inner (lower) bolt part (13) and the roller surface (12). The lifting mechanism of the stud welding gun is then automatically switched off and the two-part stud is pressed into the liquid weld pool by means of spring pressure, which creates a homogeneous, firm connection between the roller surface (12) and the studded stud, the latter being extremely hard due to the protective radially outer stud part (14) has a long service life. The hard material of the radially outer bolt part (14) has a hardness of more than 52 HRC (hardness test according to Rockwell C), in particular greater than 58 HRC.

Die Höhe der von der Walzenoberfläche (12) radial nach außen vorstehenden Bolzen beträgt ca. größer 5 mm, z. B. 8 bis 10 mm, bei einem Bolzendurchmesser von z. B. 15 mm. Benachbarte Noppenbolzen sind in einem so engen Abstand voneinander von z. B. kleiner etwa 40 mm aufgeschweißt, daß die zwischen den Bolzen gebildeten Zwischenräume bzw. Taschen im Bereich der Walzenoberfläche (12) so eng sind, daß im Gutbettzerkleinerungs-Betrieb der Pressenwalze diese Zwischenräume bzw. Taschen (17) zwischen den Bolzen mit ein und demselben zusammengepreßten und durch Gutbettzerkleinerung hervorgegangenen feinkörnigen, aber hochverdichteten Gut ausgefüllt sind, welches während der Walzenumdrehungen in diesen Taschen liegenbleibt, d. h. das in die Zwischenräume bzw. Taschen (17) zwischen den Noppenbolzen von außen hineingepreßte und dort mit Sicherheit verbleibende Gutmaterial bildet einen idealen autogenen Verschleißschutz. Im übrigen macht es keine Mühe, einzelne zweiteilige Noppenbolzen, die von Haus aus ein hohes Standzeitvermögen garantieren, im Falle ihrer Beschädigung oder ihres Verschleißes mittels Einsatzes einer Bolzenschweißpistole durch neue vorgefertigte zweiteilige Noppenbolzen wieder zu ersetzen.The height of the bolts projecting radially outward from the roller surface (12) is approximately greater than 5 mm, for. B. 8 to 10 mm, with a bolt diameter of z. B. 15 mm. Adjacent studs are so close to each other from z. B. less than about 40 mm welded that the gaps or pockets formed between the bolts in the area of the roller surface (12) are so narrow that these gaps or pockets (17) between the bolts with and in the material bed crushing operation of the press roller the same compressed and fine-grained but highly compacted material resulting from material bed comminution, which remains in these pockets during the roller revolutions, d. H. the good material pressed into the spaces or pockets (17) between the stud bolts from the outside and remaining there with certainty forms an ideal autogenous wear protection. Moreover, it is no problem to replace individual two-piece stud bolts, which guarantee a long service life, in the event of their damage or wear by using a stud welding gun with new, prefabricated two-piece stud bolts.

Claims (8)

Oberflächenpanzerung für die Walzen von Hochdruck-Walzenpressen zur Druckzerkleinerung körnigen Gutes, mit einer Vielzahl von auf die Walzenoberfläche (12) mit Abstand voneinander aufgeschweißten und nach außen vorstehenden Noppenbolzen, die zwischen sich Taschen (17) zur Aufnahme von zusammengepreßtem feinkörnigen Gut bilden, dadurch gekennzeichnet, daß die Noppenbolzen jeweils aus einem radial inneren mit der Walzenoberfläche (12) gut verschweißbaren Bolzenteil (13) und aus einem den radial inneren Bolzenteil schützend abdeckenden radial äußeren härteren Bolzenteil (14) zusammengesetzt sind, welch letzterer aus Hartstoffen besteht und stoffschlüssig mit dem radial inneren Bolzenteil (13) verbunden ist.Surface armor for the rollers of high-pressure roller presses for pressure comminution of granular material, with a plurality of stud bolts welded onto the roller surface (12) at a distance from one another and projecting outwards, which form pockets (17) between them for receiving compressed fine-grain material, characterized in that that the stud bolts are each composed of a radially inner readily weldable to the roller surface (12) said pin member (13) and a radially inner pin member protectively covering the radially outer harder pin member (14), the latter is made of hard materials and material engagement radially with the inner bolt part (13) is connected. Oberflächenpanzerung nach Anspruch 1, dadurch gekennzeichnet, daß der radial äußere Bolzenteil (14) aus Hartmetall und/oder Keramikmaterial und/oder aus Hartschweißstoffen besteht.Surface armor according to claim 1, characterized in that the radially outer bolt part (14) consists of hard metal and / or ceramic material and / or hard welding materials. Oberflächenpanzerung nach den Ansprüchen 1 oder 2, dadurch gekennzeichnet, daß der Hartstoff des radial äußeren Bolzenteils (14) eine Härte von mehr als 52 HRC (Härteprüfung nach Rockwell C), insbesondere größer 58 HRC aufweist.Surface armor according to claims 1 or 2, characterized in that the hard material of the radially outer bolt part (14) has a hardness of more than 52 HRC (hardness test according to Rockwell C), in particular greater than 58 HRC. Oberflächenpanzerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der radial äußere Bolzenteil (14) mit dem radial inneren Bolzenteil (13) durch Reibungsschweißung oder Lichtbogenschweißung oder Plattierungsschweißung wie z. B. Sprengplattieren stoffschlüssig verbunden ist.Surface armor according to one of claims 1 to 3, characterized in that the radially outer bolt part (14) with the radially inner bolt part (13) by friction welding or arc welding or cladding welding such as. B. explosive plating is integrally connected. Oberflächenpanzerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der radial äußere Bolzenteil (14) pulvermetallurgisch hergestellt und auf den radial inneren Bolzenteil (13) aufgesintert ist.Surface armor according to one of claims 1 to 3, characterized in that the radially outer bolt part (14) is produced by powder metallurgy and is sintered onto the radially inner bolt part (13). Oberflächenpanzerung nach einem der Ansprüche 1 bis 3, dadurch gekennzeichnet, daß der radial äußere Bolzenteil (14) und der radial innere Bolzenteil (13) pulvermetallurgisch einzeln oder gemeinsam hergestellt sind, wobei in jedem Fall beide Teile zusammengesintert sind.Surface armor according to one of claims 1 to 3, characterized in that the radially outer bolt part (14) and the radially inner bolt part (13) are produced by powder metallurgy individually or together, in each case both parts being sintered together. Oberflächenpanzerung nach den Ansprüchen 1 bis 6, dadurch gekennzeichnet, daß der radial äußere Bolzenteil (14) und der radial innere Bolzenteil (13) eine vorgefertigte Einheit sind.Surface armor according to claims 1 to 6, characterized in that the radially outer bolt part (14) and the radially inner bolt part (13) are a prefabricated unit. Oberflächenpanzerung nach den Ansprüchen 1 bis 7, dadurch gekennzeichnet, daß der Walzenmantel (11), auf dessen Oberfläche (12) die zweiteiligen Noppenbolzen (13, 14) aufgeschweißt sind, aus einem in sich geschlossenen Bandagenring oder aus einzelnen mit dem Walzengrundkörper lösbar verspannten Segmenten besteht.Surface armor according to claims 1 to 7, characterized in that the roller casing (11), on the surface (12) of which the two-part stud bolts (13, 14) are welded, consists of a self-contained bandage ring or of individual segments releasably braced with the roller base body consists.
EP95113514A 1994-09-05 1995-08-29 Wear resistant roller for use in high pressure roller mills for pressure milling of granular material Expired - Lifetime EP0699479B1 (en)

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DE4431563A DE4431563A1 (en) 1994-09-05 1994-09-05 Wear-resistant surface armor for the rollers of high-pressure roller presses for pressure reduction of granular goods (documents for P 44 44 337.4 given)

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Cited By (9)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872280A2 (en) * 1997-02-22 1998-10-21 KHD Humboldt-Wedag AG Wear-resistant surface coating for rollers of roller mills for pressure milling of granular material
EP1502650A1 (en) * 2003-07-31 2005-02-02 Polysius AG Milling roller
WO2006133870A1 (en) * 2005-06-16 2006-12-21 Khd Humboldt Wedag Gmbh Roll crusher for crushing hot cement clinker
WO2011072754A1 (en) 2009-12-18 2011-06-23 Metso Minerals (Wear Protection) Ab Bimaterial elongated insert member for a grinding roll
CN101594938B (en) * 2007-03-13 2012-02-01 伯利休斯股份有限公司 Method for reconditioning a used grinding roller
EP2780127A4 (en) * 2011-11-18 2015-09-30 Diamorph Ab A gradient weld stud and method of preparation
DE102016200912A1 (en) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Wear protection element for a shredding device
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Families Citing this family (20)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US6080092A (en) 1994-10-06 2000-06-27 Xomed Surgical Products, Inc. Industrial cleaning sponge
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
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
JP3271048B2 (en) * 1996-09-30 2002-04-02 株式会社 塚田螺子製作所 Sheet feed shaft, manufacturing apparatus and manufacturing method thereof
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DE10137131A1 (en) * 2001-07-30 2003-02-13 Polysius Ag Roller for high pressure fluidized bed grinder has surface profiling with wear-resistant profiled bodies whose wear resistance matches stresses on rolling surface to achieve uniform wear over width of roller
DE10241741A1 (en) * 2002-09-10 2004-03-18 Alstom (Switzerland) Ltd. Gas turbine has surface exposed to cooling fluid which has burls which are formed by arc welding
US20090075116A1 (en) * 2005-06-06 2009-03-19 Think Laboratory Co., Ltd. Gravure plate-making roll and method of producing the same
US20100151268A1 (en) 2008-12-11 2010-06-17 Flsmidth A/S Wear-resistant hard surfacing method and article
ES2637005T3 (en) * 2009-04-01 2017-10-10 Mec Holding Gmbh Wear resistant roller and method to produce it
DE102009050636B4 (en) * 2009-10-24 2011-07-07 Siempelkamp Giesserei GmbH, 47803 Grinding roller and ring bandage for a grinding roller
WO2011128789A2 (en) * 2010-04-16 2011-10-20 Flsmidth A/S Wear-resistant roller
US8434707B2 (en) * 2010-10-28 2013-05-07 Mitsubishi Materials Corporation Apparatus for fracturing polycrystalline silicon and method for producing fractured fragments of polycrystalline silicon
JP5853580B2 (en) * 2011-10-21 2016-02-09 三菱マテリアル株式会社 Crushing device and crushed material manufacturing method
JP5782986B2 (en) * 2011-10-21 2015-09-24 三菱マテリアル株式会社 Crushing device and crushed material manufacturing method
DE102012102199A1 (en) * 2012-03-15 2013-09-19 Maschinenfabrik Köppern GmbH & Co KG press roll
CN103008051A (en) * 2012-12-29 2013-04-03 成都利君实业股份有限公司 Magnetism column pin roller
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Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361172A1 (en) * 1988-09-22 1990-04-04 Klöckner-Humboldt-Deutz Aktiengesellschaft Wear-resistant roller coating for roller crushers, and method for building up said coating
EP0443195A1 (en) 1990-02-22 1991-08-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Abrasion-resistant cladding for the roller surfaces of roller machines, in particular high-pressure roller presses
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

Family Cites Families (16)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2792183A (en) * 1955-01-31 1957-05-14 Leander F Fasching Bale disintegrating and shredding apparatus
DE1893376U (en) * 1964-02-27 1964-05-21 Kloeckner Werke Ag ROLLER FOR CRUSHING DEVICE FOR CRUSHING PLASTIC, METAL WASTE OD. DGL.
US3599306A (en) * 1969-06-13 1971-08-17 Beloit Corp Roll composition
US3859701A (en) * 1972-02-11 1975-01-14 Armstrong Cork Co Bonding of rubber to magnesium and its alloys
US4101318A (en) * 1976-12-10 1978-07-18 Erwin Rudy Cemented carbide-steel composites for earthmoving and mining applications
NL7703234A (en) * 1977-03-25 1978-09-27 Skf Ind Trading & Dev METHOD FOR MANUFACTURING A DRILL CHUCK INCLUDING HARD WEAR-RESISTANT ELEMENTS, AND DRILL CHAPTER MADE ACCORDING TO THE METHOD
US4114322A (en) * 1977-08-02 1978-09-19 Harold Jack Greenspan Abrasive member
US4359335A (en) * 1980-06-05 1982-11-16 Smith International, Inc. Method of fabrication of rock bit inserts of tungsten carbide (WC) and cobalt (Co) with cutting surface wear pad of relative hardness and body portion of relative toughness sintered as an integral composite
DE3025533C1 (en) * 1980-07-05 1982-02-11 Thyssen Edelstahlwerke AG, 4000 Düsseldorf Compound sintering process
US4617709A (en) * 1984-03-05 1986-10-21 T. J. Gundlach Machine Company Segmental shell for a coal crusher roll including specialized removal means
US4978260A (en) * 1986-01-06 1990-12-18 Tri-State Oil Tools, Inc. Cutting tool for removing materials from well bore
JP2559049B2 (en) * 1987-12-18 1996-11-27 日本電信電話株式会社 Self-routing speech path system
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
US5267398A (en) * 1991-06-04 1993-12-07 Anadrill, Inc. Method for manufacturing a diamond thrust bearing
DE9116489U1 (en) * 1991-10-04 1992-12-03 Klöckner-Humboldt-Deutz AG, 5000 Köln Wear-resistant surface armor for the rollers of roller machines, especially high-pressure roller presses
DE4431951A1 (en) * 1994-09-08 1996-03-14 Same Spa Hydraulic system

Patent Citations (3)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0361172A1 (en) * 1988-09-22 1990-04-04 Klöckner-Humboldt-Deutz Aktiengesellschaft Wear-resistant roller coating for roller crushers, and method for building up said coating
EP0443195A1 (en) 1990-02-22 1991-08-28 Klöckner-Humboldt-Deutz Aktiengesellschaft Abrasion-resistant cladding for the roller surfaces of roller machines, in particular high-pressure roller presses
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

Cited By (15)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0872280A2 (en) * 1997-02-22 1998-10-21 KHD Humboldt-Wedag AG Wear-resistant surface coating for rollers of roller mills for pressure milling of granular material
EP0872280A3 (en) * 1997-02-22 1999-03-17 KHD Humboldt-Wedag AG Wear-resistant surface coating for rollers of roller mills for pressure milling of granular material
EP1502650A1 (en) * 2003-07-31 2005-02-02 Polysius AG Milling roller
WO2006133870A1 (en) * 2005-06-16 2006-12-21 Khd Humboldt Wedag Gmbh Roll crusher for crushing hot cement clinker
EP1899070A1 (en) 2005-06-16 2008-03-19 KHD Humboldt Wedag GmbH Roll crusher for crushing hot cement clinker
US8240589B2 (en) 2005-06-16 2012-08-14 Khd Humboldt Wedag Gmbh Method for crushing hot cement clinker
CN101594938B (en) * 2007-03-13 2012-02-01 伯利休斯股份有限公司 Method for reconditioning a used grinding roller
WO2011072754A1 (en) 2009-12-18 2011-06-23 Metso Minerals (Wear Protection) Ab Bimaterial elongated insert member for a grinding roll
EP2780127A4 (en) * 2011-11-18 2015-09-30 Diamorph Ab A gradient weld stud and method of preparation
DE102016200912A1 (en) * 2016-01-22 2017-07-27 Thyssenkrupp Ag Wear protection element for a shredding device
US10695766B2 (en) 2016-01-22 2020-06-30 Thyssenkrupp Industrial Solutions Ag Wear-resistant element for a comminuting device
CN109201192A (en) * 2018-09-04 2019-01-15 铜陵有色兴铜机电制造有限公司 A kind of high life slag breaking equipment
CN109201192B (en) * 2018-09-04 2021-07-20 铜陵有色兴铜机电制造有限公司 High life slay breaker
CN114669362A (en) * 2022-04-05 2022-06-28 武汉华材表面科技有限公司 Roller press roller sleeve of roller surface full surface stud and manufacturing method thereof
CN114669362B (en) * 2022-04-05 2023-09-01 武汉华材表面科技有限公司 Roller sleeve of roller press with full-face column nails on roller surface and manufacturing method thereof

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DK0699479T3 (en) 2000-05-08
EP0699479B1 (en) 1999-11-17
US5704561A (en) 1998-01-06
DE4431563A1 (en) 1996-03-07

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