WO1997005951A1 - Working part and process for its production - Google Patents
Working part and process for its production Download PDFInfo
- Publication number
- WO1997005951A1 WO1997005951A1 PCT/EP1996/002879 EP9602879W WO9705951A1 WO 1997005951 A1 WO1997005951 A1 WO 1997005951A1 EP 9602879 W EP9602879 W EP 9602879W WO 9705951 A1 WO9705951 A1 WO 9705951A1
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- WO
- WIPO (PCT)
- Prior art keywords
- inlay
- metal
- casting
- wear
- wearing part
- Prior art date
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Classifications
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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
- B02C13/00—Disintegrating by mills having rotary beater elements ; Hammer mills
- B02C13/26—Details
- B02C13/28—Shape or construction of beater elements
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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
- B02C2210/00—Codes relating to different types of disintegrating devices
- B02C2210/02—Features for generally used wear parts on beaters, knives, rollers, anvils, linings and the like
Definitions
- the invention relates to a wearing part for the processing of minerals, construction waste and metal waste, 'with an impact body made of iron material, which has in the area of its wear zone at least one inlay made of metal oxide and / or metal carbide ceramic and intimately connected by composite casting with the impact body , and a process for their production.
- Wear parts of this type are used, for example, in shredder systems, hammer and impact mills to process minerals, construction waste, scrap and similar materials.
- wear parts and tools made of ferrous materials which have a high resistance to impact stress and at the same time have sufficient break resistance.
- these strength properties in particular the requirement for sufficient ductility, reduce the resistance of these wear parts to abrasive wear.
- the known wear parts must therefore be replaced at relatively short intervals, which leads to unproductive downtimes of the processing plants.
- Wearing parts of the type mentioned are known from German published patent application DE 36 18 195 AI.
- an inlay formed as a monolithic hard metal block is provided.
- This carbide inlay is in one Composite casting connected to the actual impact body of the wearing part.
- the well-known wear parts are used as hammers in hammer mechanisms, hammer mills and stone mills. Due to the arrangement of the hard metal inlay in the area of the strongest abrasive stress, they have a significantly improved durability compared to wear parts that do not have a corresponding inlay. Practical testing of the known wear parts shows, however, that often an insufficient hold between the impact body and the inlay is guaranteed. This entails the risk that the inlay breaks out of the impact body in one piece when subjected to very heavy loads. In addition, it can be seen that in the area of the transition between the hard metal inlay and the impact body, which consists of much softer iron material, there is a strong, step-like wear. This excessive removal in the area of the connection between the inlay and the impact body increases the risk of premature detachment of the inlay from the impact body.
- a method for producing a wearing part of the type mentioned is known from DE 33 15 125 Cl.
- wear-resistant zones are created on the wearing part in that when the wearing parts are produced by casting, hard metal particles are deposited in the respective zones, which are completely enclosed by an iron material during casting.
- the object of the invention is to use simple means the service life of wearing parts of the beginning to further improve the type mentioned so that, in addition to having sufficient resistance to impact stress and sufficient resistance to breakage, they also have increased resistance to abrasive wear.
- the invention is also based on the object of specifying a method for producing wear parts according to the invention.
- the solution to the above-mentioned object is that the inlay is perforated or sponge-like and the intimate connection between the impact body and the inlay is formed by iron material that has penetrated into the openings and pores of the inlay.
- the metal oxide and / or metal carbide ceramic inlays according to the invention each have a roughly porous structure and are penetrated by through openings. These openings passing through the respective inlay can be designed in the form of perforations.
- the inlays according to the invention can have a sponge-like, permeable structure, the openings and pores of which are connected to one another. The size of the openings and pores is chosen so that the iron material of the impact body not only surrounds the respective inlays on all sides during the manufacture of the wearing parts according to the invention, but penetrates into them. The result of this is that the respective inlay is held securely in the impact body, so that the inlay is prevented from breaking out of the composite thus created, even in the event of heavy impact stress.
- the matrix structure in the area of the zones subject to wear has an effect favorable for wear resistance, since the closely adjacent, repetitive, combined arrangement of tough iron material and hard ceramic material of the inlay creates a surface with optimal properties (hardness / toughness) with regard to the respective load.
- a secure hold of the inlay in the impact body can already be achieved in that the volume fraction, which is penetrated by iron material, is at least 10% of the free volume of the inlay formed by the openings and pores.
- Wear resistance can be achieved in that the free volume of the inlay is essentially completely filled with iron material. With such a complete penetration of the inlay with iron material, when the wear parts according to the invention are used later, the surfaces which are each exposed to a high level of abrasive wear have a network-like matrix of metal oxide and / or metal carbide ceramic and iron material.
- the inlay made of metal oxide and / or metal carbide ceramic can be arranged within the wear part in such a way that it encompasses its entire wear area. This configuration is particularly advantageous if the wear part is exposed to a predominantly abrasive stress.
- the inlay in the wearing part is only partially arranged where a predominantly abrasive wear occurs during later use.
- This arrangement is particularly useful with rotating striking tools of advantage, which on the one hand have areas with almost exclusively impact stress and on the other hand areas with impact-abrasive or predominantly abrasive stress.
- an iron material with sufficient resistance to impact wear and sufficient ductility and thus good break resistance can then be specifically provided, while the other areas have a high resistance to abrasive wear due to the metal-ceramic composite casting and, at the same time, a metal connection retain the remaining break resistance.
- the above-mentioned object is achieved in that a perforated or sponge-like inlay is introduced into a casting mold and cast with an iron-containing casting metal, and in that the casting metal penetrates into the openings and pores of the inlay during casting in such a way that the inlay after completion of the casting process is completely penetrated by the casting metal.
- Figure la shows a tool with a perforated inlay in a side view.
- Fig. Lb the tool of Figure la in longitudinal section.
- 2a shows a tool with a sponge-like inlay in a side view
- 2b shows the tool according to FIG. 2a in longitudinal section
- FIG. 3 shows a wearing part, in which the metallic-ceramic composite comprises the entire wearing surface, in a perspective view
- Fig. 4 is a tool that is only partially provided with a metallic-ceramic composite, in a perspective view.
- wear parts 10 and 11 are shown in the form of tools, the impact body 3 made of an iron material, which has a high resistance to impact stress and good resistance to breakage, and differently designed inlays 20 and 21 made of metal oxide or Include metal carbide ceramic.
- the tools are each provided with a bore 4 into which a bolt or the like can be inserted in order to attach the tool to a rotor, not shown, of a comminution system, such as a shredder system.
- the tools are produced by placing the inlays 20 and 21 in a suitable mold and casting them with a cast metal made of ferrous material in such a way that they form an intimate connection with the cast metal.
- the casting metal penetrates into the openings and pores of the respective inlay until the inlay is completely penetrated by the molten metal.
- the metallic-ceramic one formed from the sponge-like inlays 24 drawn through by the iron material comprises Composite the entire wear area.
- the relevant inlay 24 is arranged between two guide strips 31. This version should preferably be used where there is essentially only abrasive wear.
- FIG. 4 shows a mirror-symmetrically designed tool 3 which can be positively mounted in a rotating tool holder, not shown, of a comminution device, also not shown.
- the tool area 4 of the striking body 3 pointing in the direction of rotation or working direction D is essentially exposed to striking stress and is therefore made of an iron material with a relatively high resistance to striking wear and sufficient break resistance.
- a predominantly abrasive wear occurs on the back 15 facing away from the direction of rotation or working direction D of the tool.
- a sponge-like inlay 23 made of metal oxide or metal carbide ceramic, which has a high resistance to the abrasive stress and in the openings and pores of the iron material of the impact body 3 has penetrated, so that between the inlay 23 and the impact body 3 intimate connection is formed.
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- Engineering & Computer Science (AREA)
- Food Science & Technology (AREA)
- Crushing And Pulverization Processes (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Electrical Discharge Machining, Electrochemical Machining, And Combined Machining (AREA)
- Powder Metallurgy (AREA)
Abstract
Description
Verschleißteile und Verfahren zu deren Herstellung Wear parts and process for their manufacture
Die Erfindung betrifft ein Verschleißteil für die Aufbereitung von Mineralstoffen, Baurestmassen und Metallabfällen, 'mit einem aus Eisenwerkstoff hergestellten Schlagkörper, welcher im Bereich seiner Verschleißzone mindestens ein aus Metalloxyd- und/oder Metallkarbid-Keramik gefertigtes und durch Verbundguß mit dem Schlagkörper innig verbundenes Inlay aufweist, und ein Verfahren zu deren Herstellung. Verschleißteile dieser Art werden beispielsweise in Shredder-Anlagen, Hammer- und Prallmühlen zur Aufbereitung von Mineralstoffen, Baurestmassen, Schrott und ähnlichen Materialien eingesetzt.The invention relates to a wearing part for the processing of minerals, construction waste and metal waste, 'with an impact body made of iron material, which has in the area of its wear zone at least one inlay made of metal oxide and / or metal carbide ceramic and intimately connected by composite casting with the impact body , and a process for their production. Wear parts of this type are used, for example, in shredder systems, hammer and impact mills to process minerals, construction waste, scrap and similar materials.
In der Aufbereitungstechnik sind Verschleißteile sowie Werkzeuge aus Eisenwerkstoffen bekannt, die einen hohen Widerstand gegen eine schlagende Beanspruchung aufweisen und gleichzeitig über eine ausreichende Bruchsicherheit verfügen. Diese Festigkeitseigenschaften, insbesondere die Forderung nach ausreichender Duktilität, verringern aber die Widerstandsfähigkeit dieser Verschleißteile gegen abrasiven Verschleiß. Die bekannten Verschleißteile müssen daher in relativ kurzen Zeitabständen ausgewechselt werden, was jeweils zu unproduktiven Stillstandzeiten der Aufbereitungsanlagen führt.In processing technology, wear parts and tools made of ferrous materials are known which have a high resistance to impact stress and at the same time have sufficient break resistance. However, these strength properties, in particular the requirement for sufficient ductility, reduce the resistance of these wear parts to abrasive wear. The known wear parts must therefore be replaced at relatively short intervals, which leads to unproductive downtimes of the processing plants.
Verschleißteile der eingangs genannten Art sind aus der deutschen Offenlegungsschrift DE 36 18 195 AI bekannt. Bei den bekannten Verschleißteilen ist ein als monolitischer Hartmetallblock ausgeformtes Inlay vorgesehen. Dieses Hartmetall-Inlay ist in einem Verbundguß mit dem eigentlichen Schlagkörper des Verschleißteils verbunden.Wearing parts of the type mentioned are known from German published patent application DE 36 18 195 AI. In the known wear parts, an inlay formed as a monolithic hard metal block is provided. This carbide inlay is in one Composite casting connected to the actual impact body of the wearing part.
Die bekannten Verschleißteile werden als Hämmer in Schlagwerken, Hammermühlen und Steinmühlen eingesetzt. Sie weisen aufgrund der Anordnung des Hartmetall-Inlays im Bereich der stärksten abrasiven Beanspruchung eine gegenüber solchen Verschleißteilen, die kein entsprechendes Inlay aufweisen, deutlich verbesserte Haltbarkeit auf. Bei der praktischen Erprobung der bekannten Verschleißteile zeigt sich jedoch, daß häufig ein nicht ausreichender Halt zwischen dem Schlagkörper und dem Inlay gewährleistet ist . Dies bringt die Gefahr mit sich, daß bei sehr starker Beanspruchung das Inlay ganzstückig aus dem Schlagkörper ausbricht. Darüber hinaus zeigt sich, daß im Bereich des Übergangs zwischen dem Hartmetall-Inlay und dem aus sehr viel weicheren Eisenwerkstoff bestehenden Schlagkörper es zu einem starken, stufenartigen Verschleiß kommt. Durch diesen übermäßigen Abtrag im Bereich der Verbindung zwischen dem Inlay und dem Schlagkörper wird die Gefahr einer vorzeitigen Ablösung des Inlays von dem Schlagkörper zusätzlich verstärkt.The well-known wear parts are used as hammers in hammer mechanisms, hammer mills and stone mills. Due to the arrangement of the hard metal inlay in the area of the strongest abrasive stress, they have a significantly improved durability compared to wear parts that do not have a corresponding inlay. Practical testing of the known wear parts shows, however, that often an insufficient hold between the impact body and the inlay is guaranteed. This entails the risk that the inlay breaks out of the impact body in one piece when subjected to very heavy loads. In addition, it can be seen that in the area of the transition between the hard metal inlay and the impact body, which consists of much softer iron material, there is a strong, step-like wear. This excessive removal in the area of the connection between the inlay and the impact body increases the risk of premature detachment of the inlay from the impact body.
Ein Verfahren zur Herstellung eines Verschleißteils der eingangs genannten Art ist aus der DE 33 15 125 Cl bekannt. Bei dem bekannten Verfahren werden verschleißbeständige Zonen an dem Verschleißteil dadurch erzeugt, daß bei der gießtechnisch erfolgenden Herstellung der Verschleißteile in den jeweiligen Zonen Hartmetallteilchen angelagert werden, welche von einem Eisenwerkstoff beim Abgießen vollständig umschlossen werden.A method for producing a wearing part of the type mentioned is known from DE 33 15 125 Cl. In the known method, wear-resistant zones are created on the wearing part in that when the wearing parts are produced by casting, hard metal particles are deposited in the respective zones, which are completely enclosed by an iron material during casting.
Die Aufgabe der Erfindung besteht darin, mit einfachen Mitteln die Standzeit von Verschleißteilen der eingangs genannten Art weiter zu verbessern, so daß diese neben einer ausreichenden Widerstandsfähigkeit gegen eine schlagende Beanspruchung und einer ausreichenden Bruchsicherheit auch eine erhöhte Widerstandsfähigkeit gegen abrasiven Verschleiß aufweisen.The object of the invention is to use simple means the service life of wearing parts of the beginning to further improve the type mentioned so that, in addition to having sufficient resistance to impact stress and sufficient resistance to breakage, they also have increased resistance to abrasive wear.
Die Erfindung liegt ferner die Aufgabe zugrunde, ein Verfahren zur Herstellung erfindungsgemäßer Verschleißteile anzugeben.The invention is also based on the object of specifying a method for producing wear parts according to the invention.
Hinsichtlich der Verschleißteile der eingangs genannten Art besteht die erfindungsgemäße Lösung der voranstehend genannten Aufgabe darin, daß das Inlay perforiert oder schwammartig ausgebildet ist und die innige Verbindung zwischen dem Schlagkörper und dem Inlay durch in die Öffnungen und Poren des Inlays eingedrungenen Eisenwerkstoff gebildet ist .With regard to the wearing parts of the type mentioned in the introduction, the solution to the above-mentioned object is that the inlay is perforated or sponge-like and the intimate connection between the impact body and the inlay is formed by iron material that has penetrated into the openings and pores of the inlay.
Die erfindungsgemäßen Metalloxyd- und/oder Metallkarbid- Keramik-Inlays weisen jeweils eine grob poröse Struktur auf und sind von durchgehenden Öffnungen durchzogen. Diese das jeweilige Inlay durchziehenden Öffnungen können dabei in Form von Perforationen ausgebildet sein. Ebenso können die erfindungsgemäßen Inlays eine schwammartige, durchlässige Struktur aufweisen, deren Öffnungen und Poren miteinander verbunden sind. Die Größe der Öffnungen und Poren ist dabei so gewählt, daß der Eisenwerkstoff des Schlagkörpers bei der Herstellung der erfindungsgemäßen Verschleißteile die jeweiligen Inlays nicht nur, wie beim Stand der Technik, allseitig umschließt, sondern in diese eindringt. Dies hat zur Folge, daß das jeweilige Inlay sicher in dem Schlagkörper gehalten ist, so daß auch bei einer schweren schlagenden Beanspruchung ein Herausbrechen des Inlays aus dem so entstandenen Verbund verhindert ist. Die Matrixstruktur im Bereich der verschleißbelasteten Zonen wirkt sich günstig auf die Verschleißbeständigkeit aus, da durch die eng benachbarte, sich wiederholende kombinierte Anordnung von zähem Eisenwerkstoff und hartem Keramikwerkstoff des Inlays eine Oberfläche mit hinsichtlich der jeweilige Belastung optimalen Eigenschaften (Härte/Zähigkeit) geschaffen ist.The metal oxide and / or metal carbide ceramic inlays according to the invention each have a roughly porous structure and are penetrated by through openings. These openings passing through the respective inlay can be designed in the form of perforations. Likewise, the inlays according to the invention can have a sponge-like, permeable structure, the openings and pores of which are connected to one another. The size of the openings and pores is chosen so that the iron material of the impact body not only surrounds the respective inlays on all sides during the manufacture of the wearing parts according to the invention, but penetrates into them. The result of this is that the respective inlay is held securely in the impact body, so that the inlay is prevented from breaking out of the composite thus created, even in the event of heavy impact stress. The matrix structure in the area of the zones subject to wear has an effect favorable for wear resistance, since the closely adjacent, repetitive, combined arrangement of tough iron material and hard ceramic material of the inlay creates a surface with optimal properties (hardness / toughness) with regard to the respective load.
Ein sicherer Halt des Inlays in dem Schlagkörper kann schon dadurch bewerkstelligt werden, daß der Volemenanteil, welcher von Eisenwerkstoff durchdrungen ist, mindestens 10% des freien, durch die Öffnungen und Poren gebildeten Volumens des Inlays beträgt.A secure hold of the inlay in the impact body can already be achieved in that the volume fraction, which is penetrated by iron material, is at least 10% of the free volume of the inlay formed by the openings and pores.
Die besten Ergebnisse hinsichtliche derThe best results in terms of
Verschleißbeständigkeit lassen sich dadurch erzielen, daß das freie Volumen des Inlays im wesentlichen vollständig mit Eisenwerkstoff gefüllt ist. Bei einer derart vollständigen Durchdringung des Inlays mit Eisenwerkstoff weist beim späteren Einsatz der erfindungsgemäßen Verschleißteile die jeweils einem stark abrasiven Verschleiß ausgesetzten Oberflächen eine netzartig angeordnete Matrix aus Metalloxyd- und/oder Metallkarbid- Keramik und Eisenwerkstoff aufweisen.Wear resistance can be achieved in that the free volume of the inlay is essentially completely filled with iron material. With such a complete penetration of the inlay with iron material, when the wear parts according to the invention are used later, the surfaces which are each exposed to a high level of abrasive wear have a network-like matrix of metal oxide and / or metal carbide ceramic and iron material.
Das aus Metalloxyd- und/oder Metallkarbid-Keramik gefertigte Inlay kann innerhalb des Verschleißteiles derart angeordnet sein, daß es dessen gesamten Verschleißbereich umfaßt. Diese Ausgestaltung ist besonders vorteilhaft, wenn das Verschleißteil einer überwiegend abrasiven Beanspruchung ausgesetzt ist.The inlay made of metal oxide and / or metal carbide ceramic can be arranged within the wear part in such a way that it encompasses its entire wear area. This configuration is particularly advantageous if the wear part is exposed to a predominantly abrasive stress.
Eine andere vorteilhafte Ausgestaltung besteht darin, daß das Inlay im Verschleißteil partiell nur dort angeordnet ist, wo bei der späteren Verwendung eine überwiegend abrasive Verschleißbeanspruchung auftritt. Diese Anordnung ist besonders bei rotierenden Schlagwerkzeugen von Vorteil, die einerseits Bereiche mit fast ausschließlich schlagender Beanspruchung und andererseits Bereiche mit schlagend-abrasiver oder überwiegend abrasiver Beanspruchung aufweisen. In den erstgenannten Bereichen kann dann gezielt ein Eisenwerkstoff mit ausreichender Widerstandsfähigkeit gegen schlagenden Verschleiß sowie ausreichender Duktilität und damit guter Bruchsicherheit vorgesehen werden, während die anderen Bereiche durch den Metall-Keramik-Verbundguß eine hohe Widerstandsfähigkeit gegen abrasiven Verschleiß aufweisen und durch die metallische Verbindung zugleich eine restliche Bruchsicherheit behalten.Another advantageous embodiment is that the inlay in the wearing part is only partially arranged where a predominantly abrasive wear occurs during later use. This arrangement is particularly useful with rotating striking tools of advantage, which on the one hand have areas with almost exclusively impact stress and on the other hand areas with impact-abrasive or predominantly abrasive stress. In the first-mentioned areas, an iron material with sufficient resistance to impact wear and sufficient ductility and thus good break resistance can then be specifically provided, while the other areas have a high resistance to abrasive wear due to the metal-ceramic composite casting and, at the same time, a metal connection retain the remaining break resistance.
Hinsichtlich des Verfahrens wird die voranstehend genannte Aufgabe dadurch gelöst, daß ein perforiert oder schwammartig ausgebildetes Inlay in eine Gußform eingebracht und mit einem eisenhaltigen Gießmetall abgegossen wird und daß das Gießmetall beim Abgießen in die Öffnungen und Poren des Inlays derart eindringt, daß das Inlay nach Beendigung des Gießvorganges vollständig von dem Gießmetall durchdrungen ist.With regard to the method, the above-mentioned object is achieved in that a perforated or sponge-like inlay is introduced into a casting mold and cast with an iron-containing casting metal, and in that the casting metal penetrates into the openings and pores of the inlay during casting in such a way that the inlay after completion of the casting process is completely penetrated by the casting metal.
Nachfolgend wird die Erfindung anhand einer Ausfuhrungsbeispiele darstellenden Zeichnung näher erläutert. Es zeigen:The invention is explained in more detail below with the aid of a drawing showing exemplary embodiments. Show it:
Fig. la ein Werkzeug mit einem perforierten Inlay in einer Seitenansicht;Figure la shows a tool with a perforated inlay in a side view.
Fig. lb das Werkzeug nach Fig. la im Längsschnitt;Fig. Lb the tool of Figure la in longitudinal section.
Fig. 2a ein Werkzeug mit einem schwammartig ausgebildeten Inlay in einer Seitenansicht; Fig. 2b das Werkzeug nach Fig. 2a im Längsschnitt;2a shows a tool with a sponge-like inlay in a side view; 2b shows the tool according to FIG. 2a in longitudinal section;
Fig. 3 ein Verschleißteil, bei dem der metallisch-keramische Verbund die gesamte Verschleißfläche umfaßt, in perspektivischer Ansicht;3 shows a wearing part, in which the metallic-ceramic composite comprises the entire wearing surface, in a perspective view;
Fig. 4 ein Werkzeug, das nur partiell mit einem metallisch-keramischen Verbund versehen ist, in perspektivischer Ansicht.Fig. 4 is a tool that is only partially provided with a metallic-ceramic composite, in a perspective view.
In den Figuren la bis 2b sind Verschleißteile 10 und 11 in Form von Werkzeugen dargestellt, die einen aus einem Eisenwerkstoff hergestellten Schlagkδrper 3, der einen hohen Widerstand gegen schlagende Beanspruchung sowie eine gute Bruchsicherheit aufweist, und unterschiedlich ausgebildete Inlays 20 und 21 aus Metalloxyd- oder Metallkarbit-Keramik umfassen.In Figures la to 2b wear parts 10 and 11 are shown in the form of tools, the impact body 3 made of an iron material, which has a high resistance to impact stress and good resistance to breakage, and differently designed inlays 20 and 21 made of metal oxide or Include metal carbide ceramic.
Die Werkzeuge sind jeweils mit einer Bohrung 4 versehen, in die ein Bolzen oder dergleichen eingefügt werden kann, um das Werkzeug an einem nicht gezeigten Rotor einer Zerkleinerungsanlage, wie beispielsweise einer Shredder- Anlage zu befestigen.The tools are each provided with a bore 4 into which a bolt or the like can be inserted in order to attach the tool to a rotor, not shown, of a comminution system, such as a shredder system.
Die Herstellung der Werkzeuge erfolgt, indem die Inlays 20 und 21 in eine geeignete Gußform eingebracht und mit einem Gießmetall aus Eisenwerkstoff derart abgegossen werden, daß sie eine innige Verbindung mit dem Gießmetall bilden. Dabei dringt das Gießmetall in die Öffnungen und Poren des jeweiligen Inlays ein, bis das Inlay vollständig von der Metallschmelze durchdrungen ist.The tools are produced by placing the inlays 20 and 21 in a suitable mold and casting them with a cast metal made of ferrous material in such a way that they form an intimate connection with the cast metal. The casting metal penetrates into the openings and pores of the respective inlay until the inlay is completely penetrated by the molten metal.
Bei dem in Figur 3 dargestellten Verschleißteil 12 umfaßt der aus dem vom Eisenwerkstoff durchzogenen, schwammartigen Inlays 24 gebildete metallisch-keramische Verbund den gesamten Verschleißbereich. Das betreffende Inlay 24 ist dazu zwischen zwei Führungsleisten 31 angeordnet. Diese Ausführung ist bevorzugt dort einzusetzen, wo im wesentlichen ausschließlich abrasiver Verschleiß auftritt.In the wearing part 12 shown in FIG. 3, the metallic-ceramic one formed from the sponge-like inlays 24 drawn through by the iron material comprises Composite the entire wear area. The relevant inlay 24 is arranged between two guide strips 31. This version should preferably be used where there is essentially only abrasive wear.
Figur 4 zeigt ein spiegelsymmetrisch ausgebildetes Werkzeug 3, das in einem nicht gezeigten rotierenden Werkzeughalter einer ebenfalls nicht gezeigten Zerkleinerungsvorrichtung formschlüssig montierbar ist. Der in Dreh- bzw. Arbeitsrichtung D weisende Werkzeugbereich 4 des Schlagkörpers 3 ist im wesentlichen einer schlagenden Beanspruchung ausgesetzt und ist daher aus einen Eisenwerkstoff mit relativ hoher Widerstandsfähigkeit gegen schlagenden Verschleiß und ausreichender Bruchsicherheit hergestellt. An der der Dreh- bzw. Arbeitsrichtung D des Werkzeuges abgewandten Rückseite 15 tritt dagegen eine überwiegend abrasive Verschleißbeanspruchung auf. Dort ist ein schwammartig ausgebildetes Inlay 23 aus Metalloxyd- oder Metallkarbid- Keramik angeordnet, welches einen hohen Widerstand gegen die abrasive Beanspruchung aufweist und in dessen Öffnungen und Poren der Eisenwerkstoff des Schlagkörpers 3 eingedrungen ist, so daß zwischen dem Inlay 23 und dem Schlagkörper 3 eine innige Verbindung gebildet ist . FIG. 4 shows a mirror-symmetrically designed tool 3 which can be positively mounted in a rotating tool holder, not shown, of a comminution device, also not shown. The tool area 4 of the striking body 3 pointing in the direction of rotation or working direction D is essentially exposed to striking stress and is therefore made of an iron material with a relatively high resistance to striking wear and sufficient break resistance. On the other hand, a predominantly abrasive wear occurs on the back 15 facing away from the direction of rotation or working direction D of the tool. There is a sponge-like inlay 23 made of metal oxide or metal carbide ceramic, which has a high resistance to the abrasive stress and in the openings and pores of the iron material of the impact body 3 has penetrated, so that between the inlay 23 and the impact body 3 intimate connection is formed.
Claims
Priority Applications (3)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE59602897T DE59602897D1 (en) | 1995-08-03 | 1996-07-02 | WEAR PARTS AND METHOD FOR THE PRODUCTION THEREOF |
| EP96924838A EP0841990B1 (en) | 1995-08-03 | 1996-07-02 | Working part and process for its production |
| AU65168/96A AU6516896A (en) | 1995-08-03 | 1996-07-02 | Working part and process for its production |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE19528512.3 | 1995-08-03 | ||
| DE19528512A DE19528512C2 (en) | 1995-08-03 | 1995-08-03 | Wear parts and process for their manufacture |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO1997005951A1 true WO1997005951A1 (en) | 1997-02-20 |
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ID=7768589
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/EP1996/002879 Ceased WO1997005951A1 (en) | 1995-08-03 | 1996-07-02 | Working part and process for its production |
Country Status (6)
| Country | Link |
|---|---|
| EP (1) | EP0841990B1 (en) |
| AT (1) | ATE183669T1 (en) |
| AU (1) | AU6516896A (en) |
| DE (2) | DE19528512C2 (en) |
| ES (1) | ES2137715T3 (en) |
| WO (1) | WO1997005951A1 (en) |
Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8147980B2 (en) | 2006-11-01 | 2012-04-03 | Aia Engineering, Ltd. | Wear-resistant metal matrix ceramic composite parts and methods of manufacturing thereof |
| US9108202B2 (en) | 2011-10-31 | 2015-08-18 | Alstom Technology Ltd | Hammer of a beater mill |
| WO2019201436A1 (en) | 2018-04-18 | 2019-10-24 | Stahlwerke Bochum Gmbh | Striking tool and rotor fitted with same for a machine for crushing metal objects or rocky materials |
| WO2019201437A1 (en) | 2018-04-18 | 2019-10-24 | Stahlwerke Bochum Gmbh | Striking tool and rotor fitted with same for a machine for crushing metal objects or rocky materials |
| WO2020057744A1 (en) | 2018-09-20 | 2020-03-26 | Stahlwerke Bochum Gmbh | Protective cap and rotor equipped with same for a machine for comminuting metal objects or rock materials |
Families Citing this family (13)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| ATE195895T1 (en) | 1996-10-01 | 2000-09-15 | Hubert Francois | WEAR-RESISTANT COMPOSITE BODY |
| NL1019297C1 (en) | 2001-06-26 | 2003-01-07 | Johannes Petrus Andreas Zanden | Gear block with reinforcement part. |
| DK1450973T3 (en) | 2001-12-04 | 2006-07-10 | Magotteaux Int | Molded part with increased wear resistance |
| ATE332750T1 (en) * | 2002-06-26 | 2006-08-15 | Passage De Douro Bvba | STRUCTURAL COMPOSITE ACCELERATOR |
| ITUD20030169A1 (en) * | 2003-08-20 | 2005-02-21 | F A R Fonderie Acciaierie Roiale Spa | PROCEDURE FOR THE PRODUCTION OF AN ELEMENT SUBJECT TO WEAR, AND ELEMENT SUBJECT TO WEAR OBTAINED. |
| DE202007018782U1 (en) * | 2007-10-09 | 2009-04-16 | Hazemag & Epr Gmbh | Breaking tool for a breaking device |
| DE102010013999A1 (en) | 2010-04-07 | 2011-10-13 | Vautid Gmbh | A method for producing a cast workpiece having at least partially increased wear protection |
| DE102010022492A1 (en) | 2010-06-02 | 2011-12-08 | Stahlwerke Bochum Gmbh | Tool insert for a device for chopping lumpy material and equipped with such an insert device |
| DE102011113104B4 (en) * | 2011-09-09 | 2018-04-26 | Vautid Gmbh | wear component |
| CN102909113B (en) * | 2012-10-17 | 2015-07-01 | 株洲湘军硬质合金有限公司 | Composite board hammer for crusher and production method of same |
| CN105107576B (en) * | 2015-09-18 | 2017-10-20 | 中建材（合肥）水泥通用设备科技有限公司 | A kind of board hammer of impact crusher and its manufacture method |
| DE102017211948B3 (en) * | 2017-07-12 | 2018-03-22 | Thyssenkrupp Ag | Sieve segment with a wear protection and method for producing a sieve segment |
| CN108745508A (en) * | 2018-07-09 | 2018-11-06 | 徐州鑫华耐磨材料有限公司 | Ceramet composite hammer head and its manufacturing method |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2236953A1 (en) * | 1973-07-13 | 1975-02-07 | Wahl Verschleiss Tech | |
| SU662261A1 (en) * | 1977-02-02 | 1979-05-15 | Институт Проблем Литья Ан Украинской Сср | Method of surface-alloying of castings |
| JPH01113161A (en) * | 1987-10-28 | 1989-05-01 | Sumitomo Metal Ind Ltd | Metal-ceramic composite tube and its manufacture |
| JPH01192459A (en) * | 1988-01-26 | 1989-08-02 | Sumitomo Metal Ind Ltd | Metal-ceramic composite tube and its manufacturing method |
| EP0476496A1 (en) * | 1990-09-20 | 1992-03-25 | Magotteaux International | Process for fabrication of a bimetallic casting and a wear resisting part according to said process |
Family Cites Families (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| DE3315125C1 (en) * | 1983-04-27 | 1984-11-22 | Fried. Krupp Gmbh, 4300 Essen | Wear-resistant composite body and method for its production |
| DE3618195A1 (en) * | 1986-05-30 | 1987-12-03 | Werner Schatz | Hammer for comminuting concrete, rock or the like |
| DD293754A5 (en) * | 1990-04-25 | 1991-09-12 | Gisag-Ag Giesserei Und Maschinenbau Leipzig,De | METHOD FOR PRODUCING PARTICULARLY WEAR-PROOFED CASTINGS |
-
1995
- 1995-08-03 DE DE19528512A patent/DE19528512C2/en not_active Expired - Fee Related
-
1996
- 1996-07-02 AU AU65168/96A patent/AU6516896A/en not_active Abandoned
- 1996-07-02 EP EP96924838A patent/EP0841990B1/en not_active Expired - Lifetime
- 1996-07-02 WO PCT/EP1996/002879 patent/WO1997005951A1/en not_active Ceased
- 1996-07-02 ES ES96924838T patent/ES2137715T3/en not_active Expired - Lifetime
- 1996-07-02 DE DE59602897T patent/DE59602897D1/en not_active Expired - Lifetime
- 1996-07-02 AT AT96924838T patent/ATE183669T1/en not_active IP Right Cessation
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| FR2236953A1 (en) * | 1973-07-13 | 1975-02-07 | Wahl Verschleiss Tech | |
| SU662261A1 (en) * | 1977-02-02 | 1979-05-15 | Институт Проблем Литья Ан Украинской Сср | Method of surface-alloying of castings |
| JPH01113161A (en) * | 1987-10-28 | 1989-05-01 | Sumitomo Metal Ind Ltd | Metal-ceramic composite tube and its manufacture |
| JPH01192459A (en) * | 1988-01-26 | 1989-08-02 | Sumitomo Metal Ind Ltd | Metal-ceramic composite tube and its manufacturing method |
| EP0476496A1 (en) * | 1990-09-20 | 1992-03-25 | Magotteaux International | Process for fabrication of a bimetallic casting and a wear resisting part according to said process |
Non-Patent Citations (3)
| Title |
|---|
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 334 (M - 855) 27 July 1989 (1989-07-27) * |
| PATENT ABSTRACTS OF JAPAN vol. 013, no. 484 (M - 886) 2 November 1989 (1989-11-02) * |
| SOVIET INVENTIONS ILLUSTRATED Week 8004, Derwent World Patents Index; AN 80-07021c, XP002018486 * |
Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US8147980B2 (en) | 2006-11-01 | 2012-04-03 | Aia Engineering, Ltd. | Wear-resistant metal matrix ceramic composite parts and methods of manufacturing thereof |
| US9108202B2 (en) | 2011-10-31 | 2015-08-18 | Alstom Technology Ltd | Hammer of a beater mill |
| WO2019201436A1 (en) | 2018-04-18 | 2019-10-24 | Stahlwerke Bochum Gmbh | Striking tool and rotor fitted with same for a machine for crushing metal objects or rocky materials |
| WO2019201437A1 (en) | 2018-04-18 | 2019-10-24 | Stahlwerke Bochum Gmbh | Striking tool and rotor fitted with same for a machine for crushing metal objects or rocky materials |
| US11198131B2 (en) | 2018-04-18 | 2021-12-14 | Stahlwerke Bochum Gmbh | Striking tool and rotor fitted therewith for a machine for crushing metal objects or stone materials |
| US11517909B2 (en) | 2018-04-18 | 2022-12-06 | Stahlwerke Bochum Gmbh | Striking tool and rotor fitted therewith for a machine for crushing metal objects or stone materials |
| WO2020057744A1 (en) | 2018-09-20 | 2020-03-26 | Stahlwerke Bochum Gmbh | Protective cap and rotor equipped with same for a machine for comminuting metal objects or rock materials |
Also Published As
| Publication number | Publication date |
|---|---|
| DE19528512A1 (en) | 1997-02-06 |
| ATE183669T1 (en) | 1999-09-15 |
| AU6516896A (en) | 1997-03-05 |
| ES2137715T3 (en) | 1999-12-16 |
| DE19528512C2 (en) | 2001-02-22 |
| EP0841990B1 (en) | 1999-08-25 |
| EP0841990A1 (en) | 1998-05-20 |
| DE59602897D1 (en) | 1999-09-30 |
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