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WO2010136055A1 - Elément d'usure pour machine de travail du sol avec résistance à l'usure améliorée - Google Patents

Elément d'usure pour machine de travail du sol avec résistance à l'usure améliorée Download PDF

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Publication number
WO2010136055A1
WO2010136055A1 PCT/EP2009/005802 EP2009005802W WO2010136055A1 WO 2010136055 A1 WO2010136055 A1 WO 2010136055A1 EP 2009005802 W EP2009005802 W EP 2009005802W WO 2010136055 A1 WO2010136055 A1 WO 2010136055A1
Authority
WO
WIPO (PCT)
Prior art keywords
insert
element according
wearing element
steel
zro
Prior art date
Application number
PCT/EP2009/005802
Other languages
English (en)
Inventor
Jorge Triginer
Jose Sanchez
Jose Lopez
Jorge Alcala
Jordi Brufau Guinovart
Original Assignee
Metalogenia S.A.
Priority date (The priority date 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 date listed.)
Filing date
Publication date
Priority claimed from PCT/ES2009/000352 external-priority patent/WO2010136611A1/fr
Application filed by Metalogenia S.A. filed Critical Metalogenia S.A.
Priority to PCT/EP2009/005802 priority Critical patent/WO2010136055A1/fr
Priority to US13/321,047 priority patent/US8806785B2/en
Priority to ES10727669T priority patent/ES2431270T3/es
Priority to PL10727669T priority patent/PL2435638T3/pl
Priority to PCT/EP2010/003245 priority patent/WO2010136207A1/fr
Priority to CN201080021963.XA priority patent/CN102439233B/zh
Priority to PCT/EP2010/003246 priority patent/WO2010136208A1/fr
Priority to CN201080023481.8A priority patent/CN102482862B/zh
Priority to PL10727670T priority patent/PL2435636T3/pl
Priority to ES10727670.1T priority patent/ES2472917T3/es
Priority to AU2010252228A priority patent/AU2010252228B2/en
Priority to AU2010252229A priority patent/AU2010252229B2/en
Priority to RU2011147743A priority patent/RU2610934C9/ru
Priority to EP10727670.1A priority patent/EP2435636B1/fr
Priority to EP10727669.3A priority patent/EP2435638B1/fr
Priority to US13/322,881 priority patent/US8763282B2/en
Priority to CA2762933A priority patent/CA2762933C/fr
Publication of WO2010136055A1 publication Critical patent/WO2010136055A1/fr
Priority to ZA2011/08681A priority patent/ZA201108681B/en
Priority to ZA2011/08682A priority patent/ZA201108682B/en

Links

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
    • B22D19/06—Casting in, on, or around objects which form part of the product for manufacturing or repairing tools
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F7/00—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression
    • B22F7/06—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools
    • B22F7/08—Manufacture of composite layers, workpieces, or articles, comprising metallic powder, by sintering the powder, with or without compacting wherein at least one part is obtained by sintering or compression of composite workpieces or articles from parts, e.g. to form tipped tools with one or more parts not made from powder
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C29/00—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides
    • C22C29/02—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides
    • C22C29/06—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds
    • C22C29/08—Alloys based on carbides, oxides, nitrides, borides, or silicides, e.g. cermets, or other metal compounds, e.g. oxynitrides, sulfides based on carbides or carbonitrides based on carbides, but not containing other metal compounds based on tungsten carbide
    • C—CHEMISTRY; METALLURGY
    • C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
    • C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C30/00—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process
    • C23C30/005—Coating with metallic material characterised only by the composition of the metallic material, i.e. not characterised by the coating process on hard metal substrates
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F3/00—Dredgers; Soil-shifting machines
    • E02F3/04—Dredgers; Soil-shifting machines mechanically-driven
    • E02F3/76—Graders, bulldozers, or the like with scraper plates or ploughshare-like elements; Levelling scarifying devices
    • E02F3/80—Component parts
    • E02F3/815—Blades; Levelling or scarifying tools
    • E02F3/8152—Attachments therefor, e.g. wear resisting parts, cutting edges
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2808—Teeth
    • E02F9/285—Teeth characterised by the material used
    • E—FIXED CONSTRUCTIONS
    • E02—HYDRAULIC ENGINEERING; FOUNDATIONS; SOIL SHIFTING
    • E02F—DREDGING; SOIL-SHIFTING
    • E02F9/00—Component parts of dredgers or soil-shifting machines, not restricted to one of the kinds covered by groups E02F3/00 - E02F7/00
    • E02F9/28—Small metalwork for digging elements, e.g. teeth scraper bits
    • E02F9/2883—Wear elements for buckets or implements in general
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F5/00—Manufacture of workpieces or articles from metallic powder characterised by the special shape of the product
    • B22F2005/001—Cutting tools, earth boring or grinding tool other than table ware
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B22—CASTING; POWDER METALLURGY
    • B22F—WORKING METALLIC POWDER; MANUFACTURE OF ARTICLES FROM METALLIC POWDER; MAKING METALLIC POWDER; APPARATUS OR DEVICES SPECIALLY ADAPTED FOR METALLIC POWDER
    • B22F2999/00—Aspects linked to processes or compositions used in powder metallurgy
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C2204/00—End product comprising different layers, coatings or parts of cermet

Definitions

  • the present invention relates to wearing elements, such as cast steel teeth to be specially used in machinery for earth-moving, ground-engaging and/or rock- cutting applications, as well as to inserts to be included within the wearing elements, to enhance their wear resistance thus prolonging their service life.
  • This document describes a replaceable composite excavating tooth that comprises wear-resistant Cr-cast iron inserts having a higher hardness than a tooth body and being insert-cast into the tooth body.
  • the performance of the excavating tooth is improved by locating the wear-resistant material as an integral insert at a central part between the top and bottom surfaces and determining the width of the insert substantially the same as the width between both side surfaces of the tooth body.
  • the insert extends from the tip end towards an attachment part of the tooth and terminates at a limiting position for the potential use of the teeth. Tooth replacement is then needed once the limiting position is reached.
  • inter-layers sheets
  • the art teaches the use of sufficiently thick inter-layers (sheets), preferably in-between 1 and 8 mm thickness, whose melting temperatures are >50 0 C above that of the poured metal and more preferably 200 0 C above of that of the poured metal in the art taught in US-4,764,255 and US-4,584,020.
  • the inter-layers comprise a low-melting temperature alloy, such as copper, in the art taught by Furman.
  • Waldenstrom and Fischer disclose that the inter-layers shall be sufficiently thick as not to dissolve during the pouring of the steel.
  • the structure produced thereby is thus regarded to have improved resistance against crack propagation because of the crack-arresting properties of the inter-layers.
  • the cross-sectional microstructure of the inserted WC part is constituted by less than five cemented carbide particles across two outer regions where penetration of the cast iron occurs. Within such particles, formation of inter-diffusion and pure cast-alloy zones is taught by US-4,584,020.
  • the above art discloses fabrication of infiltrated bulk reticulated cellular ceramic foams, where the following strategies are applied to favor metal infiltration: (i) selection of a low-melting temperature alloy, (ii) use of external pressure; (iii) heating of the mould prior to infiltration.
  • the present invention relates to the processing of enhanced wear resistant components such as teeth for earth-moving, ground-engaging and/or rock-cutting machinery, having engineered high-performance bonds between inserts harder than steel and the cast steel element where the insert is placed.
  • An important object of the invention is thus to improve the wear life of the component by introducing inserts with outstanding hardness within a tougher impact-resistant cast steel. It has been discovered that the quality of the bonding that is developed between the cermet/ceramic inserts and the cast steel is critical to the performance of the component and to the avoidance of sudden failures.
  • the reinforced wearing elements that are an object of the present invention have particular use in ground-engaging works in which the downtime cost is significantly high.
  • the reinforced wearing elements of this invention thus allow the extension of effective working time within consecutive replacements.
  • the reinforced wearing elements of this invention may substitute conventional ground-engaging tools (or elements), which are generally manufactured exclusively from low alloy steels.
  • the invention refers to different embodiments for reinforcing cast steel wearing elements whose use is intended in a wide spectrum of applications.
  • the applications range from those mainly subjected to wear solicitations, to others where penetration against the ground plays a critical role in successful operation.
  • a first object of the invention refers to a wearing element with a cermet insert as defined in claims 1 to 20;
  • a second object of the invention refers to a wearing element with a ceramic foam insert as defined in claims 21 to 30;
  • a third object of the invention refers to a self supporting insert with a hard reinforcement body as defined in claims 31 to 43. Description of the drawings The present disclosure includes the following figures to illustrate the invention:
  • Figure 1 shows a scheme of the existing bonding zones between the insert and the cast metal.
  • Figure 2 shows a magnification of the two bonding zones.
  • the object of the present invention is the enhancement of the wear resistance of a wearing element, constituted by a gravity-cast steel containing at least one hard bulk insert, i.e. cemented carbide, or ceramic foam, or both, characterized in that the bonding between the material of said insert and the cast steel guarantees the safe-operation of the wearing elements or reinforced components in service, preventing therefore, breakage of the elements related with defects in said bonding.
  • the first object of the invention describes a first embodiment that refers to wearing elements or components, that at least comprise an insert made up of a cemented carbide or cermet body, whose hardness is substantially higher than the hardness of the cast steel that constitutes the unreinforced parts of the wearing element.
  • the wearing element for earth/rock engaging/moving machines is constituted by a gravity-cast steel containing at least one bulk insert of cemented carbide. At least two bonding zones (2, 3) between insert and steel are defined.
  • first bonding zone (2) where the cementing matrix of the cemented carbide is substituted by cast steel
  • second bonding zone (3) where the carbide of the cemented carbide insert reacts with the cast steel, enriching the carbon content of the steel and lowering its melting temperature.
  • the wearing element is characterized in that the second bonding zone (3) has a controlled thickness, so as to restrict or prevent formation of macro- porosity in the bonding zone between insert and steel, thus avoiding premature failure of said element under service.
  • the bonding is enhanced through the control of the properties of the steel during the insert-casting process and/or through the specific design of a protective coating layer.
  • Compositional and geometrical design/placing of said insert in conjunction with the casting processes are optimized so as to prevent the problems stated in the prior-art.
  • the preferred cermet used for the inserts of this first embodiment comprises tungsten carbide particles preferably cemented by a cobalt matrix.
  • the aforementioned optimization of the bonding is performed through one or a combination of the following strategies.
  • First, the temperature of the molten steel reaching the insert's surface is controlled, so that it does not exceed 50°C above its melting temperature.
  • Second, usage of an improved WC/metallic binder ratio provides control over the penetration of the steel into the cermet insert.
  • the use of protective inter- layers as the ones taught in the prior-art is removed by controlling the temperature of the poured steel to ensure that it comes into contact with the cermet in less than 100 0 C above, and more preferably less than 50 0 C above, of its own melting temperature.
  • the dissolution of the cermet can be prevented by the freezing of the molten steel in the vicinity of the insert.
  • the temperature of the steel contacting the insert becomes more uniform by using risers or cores to prevent shrink-hole formation. Optimization of the microstructural bond involving removal of macro-porosity is thus carried-out by enforcing the above temperature range in the molten steel.
  • the following processes are involved in the formation of the microstructural/metallurgical bond: (i) Partial dissolution of the WC particles in the cermet by the steel.
  • the first region (3. a) adjacent to the original surface of the insert and to the first bonding zone (2), is constituted by a solid solution whose tungsten content may exceed 60 wt%. WC particles are likely to re-precipitate in such solid solution.
  • the microstructural morphology of the first tungsten-rich region (3. a) is that of clusters embedded within the second region (3.b).
  • the second region (3.b) involves formation of a second solid solution whose overall tungsten content is within 12% and 60 wt%.
  • This second region (3.b) of said second bonding zone (3) extends up to a zone (4), which is constituted by steel that is not enriched by the reaction with the cermet and thus maintains its original composition.
  • An invariant reaction within the Fe and W phase diagram is promoted in this second region (3.b) of said second bonding zone (3), leading to the formation of a Fe-W stochiometric compound.
  • the abovementioned clusters may become scattered within the second region (3.b) of said second bonding zone (3).
  • a fundamental aspect in the above processes concerns this second region (3.b) within said second bonding zone (3), where the high carbon content of the iron- based matrix resulting from the dissolution of WC particles significantly reduces the melting temperature to a temperature that may approximate to 1130 0 C, similar to that associated with the eutectic point in the Fe-C phase diagram. Shrinkage during solidification leads to the formation of significant pores in this second region (3.b) of the second bonding zone (3), limiting the load resisting capacity of the inserted part.
  • the above-mentioned steel pouring temperature condition where the molten steel contacts the insert being less than 50 to 100 0 C above the steel's melting temperature, significantly reduces the dissolution of the WC particles of the cermet, thereby decreasing the thickness of said second bonding zone (3) to less than 3 mm, and more preferably less than 1 mm.
  • the shrinkage of the second bonding zone (3) is minimized to a point where porosity is controlled to a maximum pore size of 3 mm, and preferably porosity is completely removed.
  • the preferable fraction of the cobalt or cobalt based matrix lies between 7 and 20 wt%.
  • An increase of the binder content within these limits enhances the toughness of the insert's core (1) after insertion strongly reducing its hardness and is therefore undesirable to the present application.
  • For cobalt contents below 7 wt% infiltration becomes increasingly difficult.
  • the toughness enhancement in this region becomes negligible.
  • the Vickers hardness after insertion in the insert's core (1) and in the first bonding zone (2) is decreased to the range of 7-10 GPa for a WC- Co cermet whose original hardness was of 12.5 GPa prior to infiltration, this feature is counteracted by the associated increase in toughness.
  • the used insert preferably contains more than 40% of its cross-sectional area comprised from WC particles whose equivalent diameter is in excess of 4 microns. Although some dissolution in the surface of such particles occurs by the action of the steel in the first bonding zone (2), the induced microstructural changes still allow achievement of the aforementioned Vickers hardness.
  • the protection of the insert's surface by a clad coating diminishes the amount of penetration of the steel into the insert as well as the dissolution of the WC particles.
  • the protective layer thus reduces carbon enrichment of the steel surrounding the insert, so that the spatial variation in melting temperature of said steel is insufficient as to induce pore formation.
  • the present protective layers are tailored so that they fully melt in contact with the steel. Different protective layers have been herein tested whose thickness vary between 0.05 to 1 mm. Good results are obtained with a metallic tungsten layer or tungsten-containing layer so that the composition of the surrounding/penetrating steel is enriched in tungsten.
  • NiCr or NiCrAIY coating that is preferably plasma sprayed on top of a bond coating to favor its adhesion to the insert's surface.
  • the resulting molten steel is thus enriched in Ni and Cr, which is a beneficial feature during the final hardening of the product through conventional heat treatments.
  • the surrounding steel is enriched by elements such as carbon that would reduce its melting temperature.
  • the second object of the invention is a reinforced wearing element for earth/rock engaging/moving machines constituted by a gravity-cast steel that contains at least one insert comprising a cellular tridimensional ceramic foam having an open-celled porous structure that is substantially or entirely penetrated by the cast steel.
  • infiltration of the ceramic foam occurs without using any external means to increase infiltration pressure.
  • pressureless infiltration is possible because the combination of the fluidic properties of the liquid steel at casting temperature is sufficient as to wet and penetrate the cells of the foam.
  • the insert included in the wearing element as an object of this second embodiment of the invention is a three-dimensional cellular ceramic foam with an open-cell porous structure that is substantially or completely penetrated by gravity pouring of the molten steel.
  • the material of said insert is preferably a zirconia-based ceramic, such as, for example, zirconia-calcia (ZrO 2 -CaO), zirconia- magnesia (ZrO 2 -MgO), zirconia-yttria, (ZrO 2 -Y 2 O 3 ), or also a zirconia-alumina (ZrO 2 - AI 2 O 3 ) composite.
  • the ceramic insert can likewise be formed by alumina-silicates (AI 2 O 3 -SiO 2 ) such as mullite, or high alumina (AI 2 O 3 ) materials such as, for example, white or tabular alumina, or aluminate materials such as, for example, aluminate spinels.
  • alumina-silicates such as mullite
  • high alumina AI 2 O 3
  • aluminate materials such as, for example, aluminate spinels.
  • high alumina or aluminate ceramics can be the ones with the highest hardness and may be expected to provide the highest wear resistance, it is well known that wettability of such ceramics by steel is comparatively poorer than that of other ceramics.
  • coating of any of the above-mentioned ceramic foams with an alumina-silicate material such as mullite facilitates infiltration by virtue of the greater wettability of mullite by the molten steel.
  • the ceramic foam of this teaching can be constituted by the immersion of said ceramic foams into a slurry of the coating material followed by its firing.
  • a further embodiment of the invention consists of a hybrid insert, i.e. a first ceramic foam insert as described before with a second insert that is introduced in said first insert so that said first insert is at least partially surrounding said second insert.
  • Said second insert is preferably comprised by a cermet core, most preferably made of cemented tungsten carbide, that is therefore introduced inside a ceramic foam of the types described previously.
  • Said second insert can be partially clad by a protective coating layer that can be made from tungsten, ferro-tungsten, or a tungsten containing alloy, as well as from NiCr and NiCrAIY.
  • the ceramic foam insert may be partially clad by a mullite layer to enhance the wettability of said ceramic foam insert by steel.
  • the resulting hybrid inserts exhibit a higher wearing rate at the outer ceramic foam.
  • the inserts thus become gradually pointed, favoring penetration of the reinforced wearing elements, i.e. teeth, into the ground.
  • the ceramic foam acts as an insulator thus increasing the thickness of the second bonding zone (3).
  • the hybrid inserts thus exhibit a stronger tendency to the development of porosity within the surrounding foam as compared to bulk tungsten carbide inserts.
  • the aforementioned protective inter-layers are then preferably applied to the tungsten carbide core prior to its insertion within the foam.
  • another object of the invention refers to a self-supporting insert with a hard reinforcement body.
  • Said self-supporting insert for wearing elements comprises a reinforcement body harder than 500 HV with at least two holes, said holes house at least two fixation rods, made from a low carbon steel or similar material, that extend outward from the holes so as to protrude beyond the surface of the body for supporting and positioning said insert within the mold cavity of the wearing element.
  • the reinforcement body of the self-supporting insert can be any of the options already described in the previous objects of invention, i.e. a cermet, a ceramic foam, or a combination of both. All these options for the insert's body can also be protected/clad/enhanced in the ways already described.
  • said insert can be at least partially clad by a protective coating layer that is preferably made from tungsten, ferro-tungsten or other tungsten-containing alloy, as well as from NiCr and NiCrAIY.

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  • Engineering & Computer Science (AREA)
  • Chemical & Material Sciences (AREA)
  • Mechanical Engineering (AREA)
  • Mining & Mineral Resources (AREA)
  • Civil Engineering (AREA)
  • General Engineering & Computer Science (AREA)
  • Structural Engineering (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Composite Materials (AREA)
  • Manufacture Of Alloys Or Alloy Compounds (AREA)

Abstract

L'invention porte sur un élément d'usure avec une résistance à l'usure améliorée en ce qui concerne des éléments d'usure, tels que des dents en acier moulé utilisées spécifiquement dans la machinerie pour des déplacements de terre, une mise en prise avec le sol et/ou des applications de découpage de roche, ainsi que sur des inserts devant être inclus à l'intérieur des éléments d'usure dans le but améliorer leur résistance à l'usure de façon à prolonger ainsi leur durée de vie d'utilisation.
PCT/EP2009/005802 2009-05-29 2009-08-10 Elément d'usure pour machine de travail du sol avec résistance à l'usure améliorée WO2010136055A1 (fr)

Priority Applications (19)

Application Number Priority Date Filing Date Title
PCT/EP2009/005802 WO2010136055A1 (fr) 2009-05-29 2009-08-10 Elément d'usure pour machine de travail du sol avec résistance à l'usure améliorée
CA2762933A CA2762933C (fr) 2009-05-29 2010-05-28 Element resistant a l'usure pour operations de prise avec le sol avec resistance a l'usure amelioree
PL10727670T PL2435636T3 (pl) 2009-05-29 2010-05-28 Element zużywalny do prac ziemnych ze zwiększoną odpornością na zużycie
AU2010252228A AU2010252228B2 (en) 2009-05-29 2010-05-28 Wear element for earth/rock working operations with enhanced wear resistance
PL10727669T PL2435638T3 (pl) 2009-05-29 2010-05-28 Element zużywalny do prac ziemnych/skalnych ze zwiększoną odpornością na zużycie
PCT/EP2010/003245 WO2010136207A1 (fr) 2009-05-29 2010-05-28 Élément résistant à l'usure pour opérations de travail de terre/roche avec résistance à l'usure améliorée
CN201080021963.XA CN102439233B (zh) 2009-05-29 2010-05-28 具有强化的耐磨性的、用于土地/岩石工序的磨损元件
PCT/EP2010/003246 WO2010136208A1 (fr) 2009-05-29 2010-05-28 Élément résistant à l'usure pour opérations de prise avec le sol avec résistance à l'usure améliorée
CN201080023481.8A CN102482862B (zh) 2009-05-29 2010-05-28 耐磨性增强的耐磨部件
US13/321,047 US8806785B2 (en) 2009-05-29 2010-05-28 Wearing element with enhanced wear resistance
ES10727670.1T ES2472917T3 (es) 2009-05-29 2010-05-28 Elemento de desgaste para operaciones de penetraci�n en la tierra con resistencia al desgaste mejorada
ES10727669T ES2431270T3 (es) 2009-05-29 2010-05-28 Elemento de desgaste para operaciones de trabajo en tierra/roca con resistencia al desgaste mejorada
AU2010252229A AU2010252229B2 (en) 2009-05-29 2010-05-28 Wearing element for ground engaging operations with enhanced wear resistance
RU2011147743A RU2610934C9 (ru) 2009-05-29 2010-05-28 Изнашиваемый элемент с повышенной износостойкостью для землеройных работ
EP10727670.1A EP2435636B1 (fr) 2009-05-29 2010-05-28 Élément résistant à l'usure pour opérations de prise avec le sol avec résistance à l'usure améliorée
EP10727669.3A EP2435638B1 (fr) 2009-05-29 2010-05-28 Élément résistant à l'usure pour opérations de travail de terre/roche avec résistance à l'usure améliorée
US13/322,881 US8763282B2 (en) 2009-05-29 2010-05-28 Wearing element with enhanced wear resistance
ZA2011/08682A ZA201108682B (en) 2009-05-29 2011-11-25 Wearing element for ground engaging operations with enhanced wear resistance
ZA2011/08681A ZA201108681B (en) 2009-05-29 2011-11-25 Wear element for earth/rock working operations with enhanced wear resistance

Applications Claiming Priority (5)

Application Number Priority Date Filing Date Title
US21332109P 2009-05-29 2009-05-29
US61/213,321 2009-05-29
PCT/ES2009/000352 WO2010136611A1 (fr) 2009-05-29 2009-07-01 Élément d'usure à résistance à l'usure améliorée
ESES2009/000352 2009-07-01
PCT/EP2009/005802 WO2010136055A1 (fr) 2009-05-29 2009-08-10 Elément d'usure pour machine de travail du sol avec résistance à l'usure améliorée

Publications (1)

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WO2010136055A1 true WO2010136055A1 (fr) 2010-12-02

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PCT/EP2009/005802 WO2010136055A1 (fr) 2009-05-29 2009-08-10 Elément d'usure pour machine de travail du sol avec résistance à l'usure améliorée

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WO2022120148A1 (fr) * 2020-12-04 2022-06-09 Me Global Inc. Matrice résistant à l'usure d'alliage de fe d'exploitation minière et composite de composé céramique de spinelle
AU2021251552B2 (en) * 2020-04-09 2024-02-08 Komatsu Ltd. Wear-resistant component

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WO2009061274A1 (fr) * 2007-11-09 2009-05-14 Sandvik Intellectual Property Ab Composants en carbure cémenté coulés

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US4101318A (en) * 1976-12-10 1978-07-18 Erwin Rudy Cemented carbide-steel composites for earthmoving and mining applications
GB2098112A (en) * 1981-04-27 1982-11-17 Kennametal Inc Casting incorporating hard, e.g. wear-resistant, insert
US5441919A (en) * 1986-09-16 1995-08-15 Lanxide Technology Company, Lp Ceramic foams
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US6338906B1 (en) * 1992-09-17 2002-01-15 Coorstek, Inc. Metal-infiltrated ceramic seal
EP1593757A1 (fr) * 2004-05-06 2005-11-09 United Technologies Corporation Membres céramiques/métalliques integrés et méthodes pour leurs fabrication
WO2009061274A1 (fr) * 2007-11-09 2009-05-14 Sandvik Intellectual Property Ab Composants en carbure cémenté coulés

Cited By (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
AU2021251552B2 (en) * 2020-04-09 2024-02-08 Komatsu Ltd. Wear-resistant component
WO2022120148A1 (fr) * 2020-12-04 2022-06-09 Me Global Inc. Matrice résistant à l'usure d'alliage de fe d'exploitation minière et composite de composé céramique de spinelle

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