EP0476496A1 - Verfahren zur Herstellung eines bimetallischen Gussstückes und Verschleissteil nach diesem Verfahren - Google Patents

Verfahren zur Herstellung eines bimetallischen Gussstückes und Verschleissteil nach diesem Verfahren Download PDF

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Publication number
EP0476496A1
EP0476496A1 EP91115332A EP91115332A EP0476496A1 EP 0476496 A1 EP0476496 A1 EP 0476496A1 EP 91115332 A EP91115332 A EP 91115332A EP 91115332 A EP91115332 A EP 91115332A EP 0476496 A1 EP0476496 A1 EP 0476496A1
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EP
European Patent Office
Prior art keywords
insert
support
inserts
wear
part according
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.)
Granted
Application number
EP91115332A
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English (en)
French (fr)
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EP0476496B1 (de
Inventor
Norbert Guerard
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Magotteaux International SA
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Magotteaux International SA
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Filing date
Publication date
Application filed by Magotteaux International SA filed Critical Magotteaux International SA
Publication of EP0476496A1 publication Critical patent/EP0476496A1/de
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Publication of EP0476496B1 publication Critical patent/EP0476496B1/de
Anticipated expiration legal-status Critical
Expired - Lifetime legal-status Critical Current

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Classifications

    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/08—Casting in, on, or around objects which form part of the product for building-up linings or coverings, e.g. of anti-frictional metal
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B02—CRUSHING, PULVERISING, OR DISINTEGRATING; PREPARATORY TREATMENT OF GRAIN FOR MILLING
    • B02C—CRUSHING, PULVERISING, OR DISINTEGRATING IN GENERAL; MILLING GRAIN
    • B02C15/00—Disintegrating by milling members in the form of rollers or balls co-operating with rings or discs
    • B02C15/004—Shape or construction of rollers or balls
    • B02C15/005—Rollers or balls of composite construction
    • 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
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
    • B22D19/00—Casting in, on, or around objects which form part of the product
    • B22D19/06—Casting in, on, or around objects which form part of the product for manufacturing or repairing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B28—WORKING CEMENT, CLAY, OR STONE
    • B28D—WORKING STONE OR STONE-LIKE MATERIALS
    • B28D1/00—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor
    • B28D1/18—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools
    • B28D1/181—Working stone or stone-like materials, e.g. brick, concrete or glass, not provided for elsewhere; Machines, devices, tools therefor by milling, e.g. channelling by means of milling tools using cutters loosely mounted on a turning tool support
    • 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 present invention relates to a method of manufacturing a bimetallic foundry part as well as a wearing part produced by this method, in particular hoops and hammers of crushers.
  • patent LU-64303 proposes a process for manufacturing composite parts by successive castings of materials with different or complementary properties.
  • this technique has two constraints. First, the process necessarily implies the existence of a horizontal separation surface between the two cast metals. In addition, the part must be relatively massive to allow the two metals to flow successively while obtaining a correct metallurgical bond between them.
  • Brazing at high temperature offers mechanical properties comparable to welding, but it requires careful operating precautions and the use of special ovens, especially vacuum ovens, in order to obtain a reliable assembly. This results in a relatively high manufacturing cost.
  • Patent US-4,099,988 proposes the implementation of the technique of inserts for the production of bimetallic armor plates for blast furnaces.
  • inserts are first poured into first molds, these inserts are then placed in a second mold in which the part is cast around the inserts so as to form a metallurgical bond between the inserts and the support material.
  • This process has the disadvantage that the inserts undergo thermal shocks during the casting of the parts. These thermal shocks generate internal tensions and cracks which propagate, not only through the inserts but, because of the metallurgical bond, also through the support.
  • the aim of the present invention is to provide a new method for manufacturing a bimetallic foundry piece with a high insertion rate, the properties of which result not only from the properties specific to each component, but also from a useful synergistic effect generated. by the juxtaposition of the two components and due either to the morphology, or to the dimensioning, or to the choice of the materials of the components.
  • the present invention provides a method of manufacturing a bimetallic foundry part consisting in casting an insert in a first mold, in placing the insert thus cast in a second mold and in casting the part in this second mold. around the insert, characterized in that the casting in the second mold is carried out so as to avoid any metallurgical connection between the insert and the cast alloy, the connection being a mechanical connection thanks to an appropriate shape of the insert .
  • the invention also provides a bimetallic wear part produced according to this process and comprising at least one insert made of a material with high wear resistance and a support cast in a more ductile material resistant to mechanical stresses, in which the mass of inserts represents at least 30% of the mass of the part, characterized by a mechanical connection between the insert (s) and the support, said mechanical connection being reinforced by an adequate geometric shape of the insert.
  • This preparation can for example consist, when the massiveness of the inserts is not too high, in a simple heat treatment.
  • the massivity increases, it is possible to provide the inserts with a refractory coating forming a thermal barrier.
  • the massivity is very high, one can even consider providing the inserts with a ceramic coating.
  • the process allows, by a judicious choice of the nature and morphology of the two components, to generate, in service, a wear profile which will maintain or optimize the work of the part.
  • the invention also provides, as an advantageous application, a hoop of mill of cylindrical or frustoconical shape with a central bore to receive a support hub and constituted by a ductile cast iron, on the surface of which are embedded longitudinally, in the direction of the generator, the wear inserts, each insert being separated from the two neighboring inserts by a radial fin consisting of a layer of said ductile iron.
  • Each insert may comprise a part of substantially parallelepiped shape constituting a wear part extended radially towards the center of the hoop by a longitudinal constriction with a section in the form of a "dovetail” forming the zone of mechanical connection with ductile iron. .
  • the "dovetail” section can also be replaced by fluted sections.
  • the spacing between the adjacent inserts can be determined by projecting radial ribs provided on the longitudinal sides of the inserts.
  • the inserts extend from one of the bases of the hoop and end before the opposite base to define there a peripheral ring of ductile iron.
  • the invention also provides a hammer for a crusher consisting of a part in the form of a sector of a circle, the inner point of which comprises an opening for the passage of a suspension and pivoting shaft and produced according to the method proposed above, characterized in the tip forms a support in machinable ductile iron and in that the outer part is an insert with high wear resistance and in that the insert and the support are secured to one another by a connection mechanical.
  • This mechanical connection can be ensured by a central extension of the insert or of the support, this extension being provided with lateral grooves.
  • This connection can, in addition, be reinforced by a front groove on the support or on the insert.
  • the mechanical connection can also be ensured by an interior sector of the insert with reduced thickness and with a transverse opening, said sector with reduced thickness being occluded in the support by the casting of the latter.
  • Such mills are, for example, used to grind coal or clinker. They essentially consist of a rotary track 30 on which grinding rollers 32 move. The material to be ground is introduced by a central feed channel 34 and falls on track 30 where it is crushed and ground between this track and the rollers 32. As shown in more detail in fig 2, the ground material is captured, at the periphery of the track 30, by an ascending current of hot air and separated at the same time under the effect of gravity and a separator 36 according to the particle size.
  • rollers 32 To avoid friction between the rollers 32 and the track 30, the rollers 32 must have a frustoconical shape as shown in FIG. 1. It is also possible to provide rollers 40, as in the embodiment of FIG. 2, with a convex running surface, the track 38 having a corresponding concave annular surface.
  • the grinding rollers are, in general, constituted by a frustoconical or cylindrical annular hoop, mounted on a hub. They must, on the one hand, have sufficient resistance to wear caused by grinding and, at the same time, be able to be machined to be mounted on the hub.
  • Known hoops are generally cast in Ni-hard cast iron or in chromium cast iron and then machined with great precision (internal diameter with H6 tolerance in some cases) before being mounted on their hub.
  • the profile of the working surfaces changes and the backlash adjustment system no longer makes it possible to restore optimal grinding conditions.
  • the sliding between the material to be ground and the surface of the hoop accelerates wear and reduces the flow rate, especially if the material to be ground is wet.
  • the present invention proposes, in its application to the crusher, to produce the hoops with inserts as shown in FIG. 3.
  • a hoop therefore consists of an annular support 42 of ductile and machinable cast iron, in which peripheral inserts 44 are embedded in a material with high abrasion resistance, for example in chromium cast iron and forming the working and wearing surface of the hoop.
  • the inserts 44 are first cast separately in suitable molds. These inserts 44 advantageously have the shape shown in perspective in Figure 4. They consist of an outer part 46 of substantially parallelepiped shape with slightly frustoconical section along the radius of curvature of the hoop. This part is extended towards the base, or inside the hoop, by a strangled longitudinal foot 48 with a radial section in the form of a "dovetail" and forming the connection zone with the support 42. Each insert 44 comprises on at least one of its longitudinal sides of the part 46, in the embodiment shown, two projecting ribs 50.
  • the inserts 44 are then placed in the mold for the casting of the frets so as to fill the entire periphery of the mold.
  • the inserts 44 are juxtaposed so that their ribs 50 are in mutual contact to define between two juxtaposed inserts a space 52 more or less wide depending on the size of the ribs 50.
  • the purpose of these ribs 50 is to cause, during casting of the support 42, a spreading of the ductile iron in the spaces 52 to form between all of the neighboring inserts 44 a fine radial fin made of ductile iron.
  • the hoop is cast in such a way as to avoid a metallurgical connection between the support 42 and the inserts 44.
  • the inserts 44 can undergo a prior preparation, for example a heat treatment to reduce the risk of cracking. If the massiveness of the inserts 44 is relatively large compared to the support 42 it is inter alia possible to coat the inserts 44 before the casting of the hoop, with a refractory coating intended to form a thermal barrier.
  • the temperature of the material forming the support 42 must therefore no longer be as high, during the casting of the hoop, compared to the case of a casting with the formation of a metallurgical bond. This has the advantage of reducing the thermal shocks that the inserts 44 undergo during this casting. These are therefore less exposed to the risks of crack formation. If, despite this precaution, a crack were to form in an insert 44, this crack would only propagate through the insert since the absence of bond metallurgical prevents its progression through the material of the support 42. In other words, the method proposed by the invention reduces the risks of the creation of cracks in the inserts 44 and also prevents their progression in the support.
  • the purpose of the fins 52 is to cause, by the work of the roller, a preferential wear of the ductile alloy and the formation of grooves between the inserts 44 in order to grip the material to be ground. In order to obtain the optimum yield, it is therefore necessary to choose the spacing between the inserts 44 as a function of the friction characteristics of the material used, of its particle size and of its angularity.
  • the morphology and the shape of the inserts 44 is therefore dictated by several criteria. Their width and their spacing must allow a circumferential pitch providing optimal training of the material used.
  • the profile of the part 48 of each insert 44 allows an excellent mechanical connection between the inserts 44 and the support 42 with a minimum of tension concentration in the chromium cast iron of the inserts.
  • the radial height of the inserts 44 allows a large usable thickness and a good mechanical connection until the end of the service life.
  • the ribs 50 allow easy adjustment and positioning of the inserts 44 in the mold.
  • a hoop made with inserts as described above has several advantages over known frets.
  • the machining and hooping operation is less delicate and less costly because of the ductility of the support 42. This ductility also reduces the risk of sudden rupture over the entire section of the part following static stresses of hooping and fatigue in service. It is possible to use castings with a high chromium content, that is to say of very high hardness (greater than 65 Rc), the machining of which is extremely difficult and costly. At the same time, the manufacturing process allows a better rate of use of expensive chromium cast iron.
  • the combination of these materials generates a synergistic effect offering other advantages.
  • This compression of the working surface has a positive effect on the resistance to fatigue and also, in certain cases, on the resistance to abrasion.
  • the hoops produced according to the proposed method offer increased wear resistance, increased mechanical reliability and increased flow during their period of use.
  • the hoop 60 has inserts 62 which do not extend over the entire length of the generator so as to leave a peripheral nose 64a forming part of the support 64 in the outer edge of the rollers ductile iron. It therefore voluntarily causes faster wear in this region of the roller to compensate for the fact that this region normally wears less quickly.
  • Figure 7 shows the evolution of the wear of such a hoop 60.
  • the profile identified by A represents the outer periphery of the hoop 60 in new unused condition.
  • Line B represents the evolution of the wear profile when the hoop has a uniform hardness over the entire length of the generator
  • dashed line C represents the evolution of the wear profile as corrected by a hoop according to Figure 6 with a more ductile outer edge 64a.
  • the particular shape of the inserts 44 notably their dovetail shape 48 contributes to consolidating the mechanical connection between the inserts 44 and the support 42.
  • the inserts are relatively massive, it is possible, to increase the contact surface while avoiding having to make too deep notches to form the dovetail shapes, to provide inserts as shown in Figure 8.
  • Such an insert 64 is comparable to the serts 44 of Figure 4, with the difference that the inner part 66 has on its two longitudinal sides corrugations or grooves 68 forming a sort of multiple dovetail.
  • the mechanical connection zone is therefore separate and is, in fact, behind the wear zone, which avoids a certain number of drawbacks at the end of life compared to the simple dovetail flush with the work surface.
  • FIGS 9 and 10 illustrate another application using a composite part produced in accordance with the present invention.
  • a crusher hammer Such crushers generally comprise a rotary drum to the surface of which are hammer crushers, pivotally attached to longitudinal shafts.
  • the hammer 70 shown in Figure 9 has a shape approximately in the sector of a circle with a bore 72 for mounting on an axis in a hammer mill.
  • This hammer is a bimetallic part produced in accordance with the present invention and comprises an insert 74 made of a material with high wear resistance and a support 76 made of a more ductile material resistant to stresses.
  • the insert 74 is first cast in a first mold and the support 76 is then cast on the insert 74 in another mold.
  • connection between the support 76 and the insert 74 is an exclusively mechanical connection.
  • the number of these splines depends on the solidity of these connections that are targeted. to obtain. It is possible, for example, to provide only one groove to make a connection in the form of a dovetail. Instead of providing the grooves 80 on an extension of the insert 74, it is also possible to provide them in a notch of the insert 74 so that the support extends inside of it.
  • FIGs 11 and 12 show another embodiment of a grinder hammer 84 produced in accordance with the present invention.
  • the hammer 84 also includes an insert 88 with high wear resistance, on which a ductile support 86 is poured.
  • the insert 88 comprises, on the side of the support 86, a sector 90 of reduced thickness (see FIG. 12) for example at central third of the thickness of the rest of the insert 88.
  • This sector 90 also comprises a transverse opening 92.
  • the support 86 and the insert 88 are therefore perfectly integrated into each other with an extremely stable mechanical connection both in the transverse direction only in longitudinal direction.
  • This embodiment also has the advantage that the wear of the insert 88 follows the shape of the ductile support 86.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Food Science & Technology (AREA)
  • Manufacturing & Machinery (AREA)
  • Mining & Mineral Resources (AREA)
  • Crushing And Grinding (AREA)
  • Component Parts Of Construction Machinery (AREA)
  • Earth Drilling (AREA)
  • Adornments (AREA)
  • Compositions Of Macromolecular Compounds (AREA)
  • Crushing And Pulverization Processes (AREA)
  • Lubricants (AREA)
EP91115332A 1990-09-20 1991-09-11 Verfahren zur Herstellung eines bimetallischen Gussstückes und Verschleissteil nach diesem Verfahren Expired - Lifetime EP0476496B1 (de)

Applications Claiming Priority (2)

Application Number Priority Date Filing Date Title
BE9000895 1990-09-20
BE9000895A BE1004573A4 (fr) 1990-09-20 1990-09-20 Procede de fabrication d'une piece de fonderie bimetallique et piece d'usure realisee par ce procede.

Publications (2)

Publication Number Publication Date
EP0476496A1 true EP0476496A1 (de) 1992-03-25
EP0476496B1 EP0476496B1 (de) 1995-03-01

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EP91115332A Expired - Lifetime EP0476496B1 (de) 1990-09-20 1991-09-11 Verfahren zur Herstellung eines bimetallischen Gussstückes und Verschleissteil nach diesem Verfahren

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Country Link
EP (1) EP0476496B1 (de)
JP (1) JP2799250B2 (de)
KR (1) KR0149031B1 (de)
AT (1) ATE119092T1 (de)
BE (1) BE1004573A4 (de)
CA (1) CA2051221C (de)
DE (1) DE69107746T2 (de)
DK (1) DK0476496T3 (de)
ES (1) ES2069156T3 (de)
PT (1) PT99013B (de)

Cited By (18)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620065A1 (de) * 1993-04-14 1994-10-19 Magotteaux International Verfahren zur Herstellung von Kompositverschleissteilen und so hergestellte Verschleissteile
WO1996012581A1 (fr) * 1994-10-24 1996-05-02 Magotteaux International Procede de fabrication d'un galet de broyage bimetallique et galet de broyage obtenu par la mise en oeuvre de ce procede
WO1997005951A1 (de) * 1995-08-03 1997-02-20 Swb Stahlformgussgesellschaft Mbh Verschleissteile und verfahren zu deren herstellung
WO1997023292A1 (en) * 1995-12-26 1997-07-03 Combustion Engineering, Inc. Energy-efficient grinding rolls for coal pulverizers
EP0804965A1 (de) * 1996-04-30 1997-11-05 Magotteaux International S.A. Mahlbahn
WO1998015373A1 (fr) * 1996-10-01 1998-04-16 Hubert Francois Piece d'usure composite
EP0838288A1 (de) * 1996-10-01 1998-04-29 Hubert Francois Verschleissfeste Verbundgussteile
WO1998031467A1 (fr) * 1997-01-15 1998-07-23 Magotteaux International S.A. Insert pour pieces d'usure composites, procede de fabrication d'une piece d'usure a l'aide de tels inserts et piece d'usure ainsi realisee
US7438247B2 (en) 2004-03-03 2008-10-21 Magotteaux International Sa Grinding rollers for a vertical crusher
US7513295B2 (en) 2001-12-04 2009-04-07 Magotteaux International Sa Cast parts with enhanced wear resistance
US8651407B2 (en) 2008-09-19 2014-02-18 Magotteaux International S.A. Composite impactor for impact crusher
CN103977864A (zh) * 2014-06-11 2014-08-13 南京凯盛国际工程有限公司 一种新型立磨辊套
CN111112583A (zh) * 2020-01-06 2020-05-08 南通高欣耐磨科技股份有限公司 一种低成本、可修复式陶瓷合金复合磨辊的制造方法
CN111408702A (zh) * 2020-04-07 2020-07-14 聂章银 一种方便移动的双金属铸造模具
CN111571121A (zh) * 2020-04-22 2020-08-25 南通高欣耐磨科技股份有限公司 一种易拆卸、可修复高耐磨陶瓷合金复合磨辊的制造方法
CN111590053A (zh) * 2020-04-22 2020-08-28 南通高欣耐磨科技股份有限公司 一种易加工、可修复高耐磨金属陶瓷复合磨辊的制造方法
CN111618277A (zh) * 2020-04-22 2020-09-04 南通高欣耐磨科技股份有限公司 一种易拆卸、易加工、可修复、高耐磨陶瓷合金复合磨辊的制造方法
CN114950636A (zh) * 2022-06-06 2022-08-30 唐山迁西大方科技有限公司 铠甲钉辊套及其制备方法

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SE532815C2 (sv) * 2007-11-09 2010-04-13 Combi Wear Parts Ab Självskärpande, autosignalerande slitdel
CN103056343B (zh) * 2012-12-21 2014-11-26 佳木斯大学 三金属复合铸造破碎机锤头生产工艺方法
BE1021839B1 (fr) * 2014-04-23 2016-01-21 Magotteaux International S.A. Galet de broyage comportant des inserts a massivite elevee
CN105413804A (zh) * 2015-12-03 2016-03-23 中钢集团安徽天源科技股份有限公司 一种高压辊磨机辊面结构及制作方法
CN107552767A (zh) * 2017-08-24 2018-01-09 昆明理工大学 一种新型耐磨斗齿的制作工艺
CN113368959A (zh) * 2021-06-11 2021-09-10 郑州机械研究所有限公司 一种不伤害母体的耐磨结构及其制备方法

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US2155215A (en) * 1936-02-27 1939-04-18 Beament Thomas Geoffrey Method of producing composite wear-resisting bodies
LU64303A1 (de) * 1971-11-22 1971-12-05
US4099988A (en) * 1976-02-26 1978-07-11 Kawasaki Jukogyo Kabushiki Kaisha Composite material having wear- and impact-resisting surface and process for producing same
EP0030933A1 (de) * 1979-12-13 1981-06-24 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Verfahren zur Herstellung von metallischen Hartgussformteilen und deren Verwendung als Baggerzähne und/oder Baggerlippen von Löffelbaggern
EP0271336A2 (de) * 1986-12-09 1988-06-15 I N G Shoji Co., Ltd. Zerkleinerungselemente für Zerkleinerungsmaschinen
DE3814433A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Walzenmuehle sowie verfahren zur beschichtung einer walze

Patent Citations (6)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US2155215A (en) * 1936-02-27 1939-04-18 Beament Thomas Geoffrey Method of producing composite wear-resisting bodies
LU64303A1 (de) * 1971-11-22 1971-12-05
US4099988A (en) * 1976-02-26 1978-07-11 Kawasaki Jukogyo Kabushiki Kaisha Composite material having wear- and impact-resisting surface and process for producing same
EP0030933A1 (de) * 1979-12-13 1981-06-24 Vereinigte Edelstahlwerke Aktiengesellschaft (Vew) Verfahren zur Herstellung von metallischen Hartgussformteilen und deren Verwendung als Baggerzähne und/oder Baggerlippen von Löffelbaggern
EP0271336A2 (de) * 1986-12-09 1988-06-15 I N G Shoji Co., Ltd. Zerkleinerungselemente für Zerkleinerungsmaschinen
DE3814433A1 (de) * 1988-04-28 1989-11-09 Krupp Polysius Ag Walzenmuehle sowie verfahren zur beschichtung einer walze

Cited By (27)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
EP0620065A1 (de) * 1993-04-14 1994-10-19 Magotteaux International Verfahren zur Herstellung von Kompositverschleissteilen und so hergestellte Verschleissteile
WO1996012581A1 (fr) * 1994-10-24 1996-05-02 Magotteaux International Procede de fabrication d'un galet de broyage bimetallique et galet de broyage obtenu par la mise en oeuvre de ce procede
WO1997005951A1 (de) * 1995-08-03 1997-02-20 Swb Stahlformgussgesellschaft Mbh Verschleissteile und verfahren zu deren herstellung
WO1997023292A1 (en) * 1995-12-26 1997-07-03 Combustion Engineering, Inc. Energy-efficient grinding rolls for coal pulverizers
US5839677A (en) * 1996-04-30 1998-11-24 Magotteaux International Track for mills
EP0804965A1 (de) * 1996-04-30 1997-11-05 Magotteaux International S.A. Mahlbahn
USRE39998E1 (en) 1996-10-01 2008-01-08 Magotteaux International S.A. Composite wear component
EP0838288A1 (de) * 1996-10-01 1998-04-29 Hubert Francois Verschleissfeste Verbundgussteile
AU723329B2 (en) * 1996-10-01 2000-08-24 Magotteaux International S.A. Composite wear component
US6399176B1 (en) 1996-10-01 2002-06-04 Magotteaux International S.A. Composite wear component
US6520241B2 (en) 1996-10-01 2003-02-18 Magotteaux Inernational S.A. Composite wear component
WO1998015373A1 (fr) * 1996-10-01 1998-04-16 Hubert Francois Piece d'usure composite
WO1998031467A1 (fr) * 1997-01-15 1998-07-23 Magotteaux International S.A. Insert pour pieces d'usure composites, procede de fabrication d'une piece d'usure a l'aide de tels inserts et piece d'usure ainsi realisee
US7513295B2 (en) 2001-12-04 2009-04-07 Magotteaux International Sa Cast parts with enhanced wear resistance
US7935431B2 (en) 2001-12-04 2011-05-03 Magotteaux International Sa Cast parts with enhanced wear resistance
US7438247B2 (en) 2004-03-03 2008-10-21 Magotteaux International Sa Grinding rollers for a vertical crusher
US8651407B2 (en) 2008-09-19 2014-02-18 Magotteaux International S.A. Composite impactor for impact crusher
CN103977864A (zh) * 2014-06-11 2014-08-13 南京凯盛国际工程有限公司 一种新型立磨辊套
CN111112583A (zh) * 2020-01-06 2020-05-08 南通高欣耐磨科技股份有限公司 一种低成本、可修复式陶瓷合金复合磨辊的制造方法
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CN111618277A (zh) * 2020-04-22 2020-09-04 南通高欣耐磨科技股份有限公司 一种易拆卸、易加工、可修复、高耐磨陶瓷合金复合磨辊的制造方法
CN111590053B (zh) * 2020-04-22 2021-09-03 南通高欣耐磨科技股份有限公司 一种易加工、可修复高耐磨金属陶瓷复合磨辊的制造方法
CN111571121B (zh) * 2020-04-22 2021-09-21 南通高欣耐磨科技股份有限公司 一种易拆卸、可修复高耐磨陶瓷合金复合磨辊的制造方法
CN114950636A (zh) * 2022-06-06 2022-08-30 唐山迁西大方科技有限公司 铠甲钉辊套及其制备方法
CN114950636B (zh) * 2022-06-06 2024-04-26 唐山迁西大方科技有限公司 铠甲钉辊套及其制备方法

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DK0476496T3 (da) 1995-07-17
PT99013B (pt) 1999-02-26
ATE119092T1 (de) 1995-03-15
CA2051221C (en) 1999-03-30
JPH04231164A (ja) 1992-08-20
CA2051221A1 (en) 1992-03-21
ES2069156T3 (es) 1995-05-01
KR0149031B1 (ko) 1998-11-16
KR920006061A (ko) 1992-04-27
BE1004573A4 (fr) 1992-12-15
DE69107746D1 (de) 1995-04-06
JP2799250B2 (ja) 1998-09-17
EP0476496B1 (de) 1995-03-01
DE69107746T2 (de) 1995-06-29
PT99013A (pt) 1993-10-29

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