WO2003047791A1 - Pieces de fonderie avec une resistance accrue a l'usure - Google Patents
Pieces de fonderie avec une resistance accrue a l'usure Download PDFInfo
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- WO2003047791A1 WO2003047791A1 PCT/BE2002/000150 BE0200150W WO03047791A1 WO 2003047791 A1 WO2003047791 A1 WO 2003047791A1 BE 0200150 W BE0200150 W BE 0200150W WO 03047791 A1 WO03047791 A1 WO 03047791A1
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- Prior art keywords
- raw materials
- reaction
- casting
- metal
- parts according
- Prior art date
Links
- 238000005266 casting Methods 0.000 claims abstract description 34
- 229910052751 metal Inorganic materials 0.000 claims abstract description 33
- 239000002184 metal Substances 0.000 claims abstract description 33
- 238000006243 chemical reaction Methods 0.000 claims abstract description 27
- 239000000843 powder Substances 0.000 claims abstract description 20
- 239000002994 raw material Substances 0.000 claims abstract description 18
- 238000011065 in-situ storage Methods 0.000 claims abstract description 15
- 229910000765 intermetallic Inorganic materials 0.000 claims abstract description 5
- 150000004767 nitrides Chemical class 0.000 claims abstract description 5
- 239000003153 chemical reaction reagent Substances 0.000 claims abstract description 4
- 229910044991 metal oxide Inorganic materials 0.000 claims abstract description 4
- 230000003014 reinforcing effect Effects 0.000 claims abstract description 4
- -1 and/or boride Chemical class 0.000 claims abstract description 3
- 238000000034 method Methods 0.000 claims description 20
- XEEYBQQBJWHFJM-UHFFFAOYSA-N iron Substances [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 18
- 239000002245 particle Substances 0.000 claims description 16
- 238000004519 manufacturing process Methods 0.000 claims description 12
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 10
- 229910045601 alloy Inorganic materials 0.000 claims description 10
- 239000000956 alloy Substances 0.000 claims description 10
- 230000006835 compression Effects 0.000 claims description 6
- 238000007906 compression Methods 0.000 claims description 6
- 239000010936 titanium Substances 0.000 claims description 6
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 5
- 229910052799 carbon Inorganic materials 0.000 claims description 5
- 229910052742 iron Inorganic materials 0.000 claims description 5
- ZOXJGFHDIHLPTG-UHFFFAOYSA-N Boron Chemical compound [B] ZOXJGFHDIHLPTG-UHFFFAOYSA-N 0.000 claims description 4
- 229910001021 Ferroalloy Inorganic materials 0.000 claims description 4
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims description 4
- 229910052782 aluminium Inorganic materials 0.000 claims description 4
- XAGFODPZIPBFFR-UHFFFAOYSA-N aluminium Chemical compound [Al] XAGFODPZIPBFFR-UHFFFAOYSA-N 0.000 claims description 4
- 229910052796 boron Inorganic materials 0.000 claims description 4
- 150000002739 metals Chemical class 0.000 claims description 4
- 229910052759 nickel Inorganic materials 0.000 claims description 4
- 230000002787 reinforcement Effects 0.000 claims description 4
- 229910052719 titanium Inorganic materials 0.000 claims description 4
- 239000002131 composite material Substances 0.000 claims description 3
- 230000004048 modification Effects 0.000 claims description 2
- 238000012986 modification Methods 0.000 claims description 2
- 230000001681 protective effect Effects 0.000 claims description 2
- 150000004706 metal oxides Chemical class 0.000 abstract description 2
- 239000000470 constituent Substances 0.000 abstract 3
- 239000002002 slurry Substances 0.000 abstract 1
- 238000005299 abrasion Methods 0.000 description 10
- 239000000919 ceramic Substances 0.000 description 8
- 239000000463 material Substances 0.000 description 5
- 238000007792 addition Methods 0.000 description 4
- 239000011230 binding agent Substances 0.000 description 3
- 150000001875 compounds Chemical class 0.000 description 3
- 230000008595 infiltration Effects 0.000 description 3
- 238000001764 infiltration Methods 0.000 description 3
- 239000000203 mixture Substances 0.000 description 3
- 230000035939 shock Effects 0.000 description 3
- 235000012431 wafers Nutrition 0.000 description 3
- 229910001018 Cast iron Inorganic materials 0.000 description 2
- VYZAMTAEIAYCRO-UHFFFAOYSA-N Chromium Chemical compound [Cr] VYZAMTAEIAYCRO-UHFFFAOYSA-N 0.000 description 2
- 239000011248 coating agent Substances 0.000 description 2
- 238000000576 coating method Methods 0.000 description 2
- 239000011159 matrix material Substances 0.000 description 2
- 150000001247 metal acetylides Chemical class 0.000 description 2
- 229910000640 Fe alloy Inorganic materials 0.000 description 1
- 229910005438 FeTi Inorganic materials 0.000 description 1
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 1
- 229910016006 MoSi Inorganic materials 0.000 description 1
- ZOKXTWBITQBERF-UHFFFAOYSA-N Molybdenum Chemical compound [Mo] ZOKXTWBITQBERF-UHFFFAOYSA-N 0.000 description 1
- XUIMIQQOPSSXEZ-UHFFFAOYSA-N Silicon Chemical compound [Si] XUIMIQQOPSSXEZ-UHFFFAOYSA-N 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000004568 cement Substances 0.000 description 1
- 238000002485 combustion reaction Methods 0.000 description 1
- 238000005056 compaction Methods 0.000 description 1
- 230000001143 conditioned effect Effects 0.000 description 1
- 238000000280 densification Methods 0.000 description 1
- 229910003460 diamond Inorganic materials 0.000 description 1
- 239000010432 diamond Substances 0.000 description 1
- 238000009826 distribution Methods 0.000 description 1
- 238000005553 drilling Methods 0.000 description 1
- 230000000694 effects Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 238000011156 evaluation Methods 0.000 description 1
- 238000000605 extraction Methods 0.000 description 1
- 238000000227 grinding Methods 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 238000007373 indentation Methods 0.000 description 1
- 230000000977 initiatory effect Effects 0.000 description 1
- 238000009434 installation Methods 0.000 description 1
- 235000000396 iron Nutrition 0.000 description 1
- 229910052748 manganese Inorganic materials 0.000 description 1
- 239000011572 manganese Substances 0.000 description 1
- 238000002844 melting Methods 0.000 description 1
- 230000008018 melting Effects 0.000 description 1
- 238000005065 mining Methods 0.000 description 1
- 229910052750 molybdenum Inorganic materials 0.000 description 1
- 239000011733 molybdenum Substances 0.000 description 1
- 239000003921 oil Substances 0.000 description 1
- 239000011148 porous material Substances 0.000 description 1
- 238000003825 pressing Methods 0.000 description 1
- 230000036632 reaction speed Effects 0.000 description 1
- 239000011819 refractory material Substances 0.000 description 1
- 239000010703 silicon Substances 0.000 description 1
- 229910052710 silicon Inorganic materials 0.000 description 1
- 239000010959 steel Substances 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 229910052721 tungsten Inorganic materials 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
- B22D19/14—Casting in, on, or around objects which form part of the product the objects being filamentary or particulate in form
-
- 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
- B22D19/02—Casting in, on, or around objects which form part of the product for making reinforced articles
-
- 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
- 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
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/05—Mixtures of metal powder with non-metallic powder
- C22C1/059—Making alloys comprising less than 5% by weight of dispersed reinforcing phases
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/10—Alloys containing non-metals
- C22C1/1036—Alloys containing non-metals starting from a melt
- C22C1/1068—Making hard metals based on borides, carbides, nitrides, oxides or silicides
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/001—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides
- C22C32/0015—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with only oxides with only single oxides as main non-metallic constituents
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C32/00—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ
- C22C32/0047—Non-ferrous alloys containing at least 5% by weight but less than 50% by weight of oxides, carbides, borides, nitrides, silicides or other metal compounds, e.g. oxynitrides, sulfides, whether added as such or formed in situ with carbides, nitrides, borides or silicides as the main non-metallic constituents
-
- 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
- C23C26/00—Coating not provided for in groups C23C2/00 - C23C24/00
- C23C26/02—Coating not provided for in groups C23C2/00 - C23C24/00 applying molten material to the substrate
-
- 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
-
- 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
- B22F2998/00—Supplementary information concerning processes or compositions relating to powder metallurgy
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12007—Component of composite having metal continuous phase interengaged with nonmetal continuous phase
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12486—Laterally noncoextensive components [e.g., embedded, etc.]
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12535—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.] with additional, spatially distinct nonmetal component
- Y10T428/12576—Boride, carbide or nitride component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/12—All metal or with adjacent metals
- Y10T428/12493—Composite; i.e., plural, adjacent, spatially distinct metal components [e.g., layers, joint, etc.]
- Y10T428/12771—Transition metal-base component
- Y10T428/12861—Group VIII or IB metal-base component
- Y10T428/12951—Fe-base component
- Y10T428/12958—Next to Fe-base component
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y10—TECHNICAL SUBJECTS COVERED BY FORMER USPC
- Y10T—TECHNICAL SUBJECTS COVERED BY FORMER US CLASSIFICATION
- Y10T428/00—Stock material or miscellaneous articles
- Y10T428/31504—Composite [nonstructural laminate]
- Y10T428/31678—Of metal
Definitions
- the present invention relates to the production of a foundry piece offering increased resistance to wear by improving the abrasion resistance while retaining an acceptable impact resistance on the reinforced parts.
- the wearing parts are generally considered to be consumables, which means that apart from purely technical constraints, there is also an economic constraint which limits the possibilities to solutions having an average cost of around 4 US $ / kg. It is generally estimated that this price level, which is twice as high as that of parts conventional wear and tear, represents the threshold of economic acceptability for customers.
- Merzhanov in document WO / 9007013, discloses a porous refractory material obtained by cold compression of the raw material of an exothermic mixture of powders under vacuum followed by the initiation of the combustion of the mixture. This is a self-propagating reaction. By this process, he obtains extremely hard materials but without any impact resistance. This is mainly due to the high porosity of the products.
- German patent application 1979777 - Lehmann discloses a process for manufacturing highly wear-resistant cast iron parts.
- carbide powders are combined with combustible binders and / or metallic powders having a low melting temperature.
- the binder gives way to the casting metal which then coats the carbide particles.
- there is no self-propagating chemical reaction and all the particles highly resistant to wear are present from the start in the mold.
- Many documents disclose such a coating of hard particles and in particular US-P-5, 052, 464 and US-P-6, 033, 791 - Smith which are based on the presence of hard particles before casting which is intended to infiltrate the pores between ceramic particles.
- the invention avoids the pitfalls of the state of the art by producing wear parts of an original constitution and manufactured by an original and simple process, therefore inexpensive.
- the present invention aims to provide wear parts resistant to both abrasion and impact at an economically justifiable price and a method for their production. It aims in particular to solve the problems linked to the solutions proposed according to the state of the art.
- the present invention relates to a wearing part, produced in a foundry, with a structure reinforced by at least one type of metal carbide, and / or metal nitrides, and / or metal oxides , and / or metal borides, as well as intermetallic compounds, hereinafter called the components, characterized in that the raw materials serving as reagents for the said components were introduced into a mold, before casting, in the form of inserts or of preforms of compacted powders or in the form of slips, in that the reaction of said powders is initiated in situ by the casting of a metal, forming a porous conglomerate in situ, and in that said metal infiltrates the porous conglomerate, constituting thus a reinforced structure, to result in an addition of said conglomerate in the structure of the metal used for casting the part, and thus create a reinforcing structure on the part of u safe.
- the components characterized in that the raw materials serving as reagents for the said components were introduced into a mold,
- porous conglomerate, created in situ, infiltrated by the casting has a Vickers hardness greater than 1000 Hv 0 while offering a toughness greater than the toughness of the pure ceramics envisaged and at least equal to the OMPa m.
- the in situ reaction between the raw materials that is to say the reagents for said components, is self-propagating and is initiated by the heat of the casting by forming a very porous conglomerate capable of being simultaneously infiltrated by casting without any particular modification of the reinforcement structure.
- the reaction between the raw materials is carried out at atmospheric pressure and without any gaseous atmosphere of particular protection, and without requiring compression after reaction.
- the raw materials, intended to produce the component belong to the group of ferroalloys, preferably FerroTi, FerroCr, FerroNb, FerroW, FerroMo, FerroB, FerroSi, FerroZr or FerroV, or preferably belong to the group of oxides Ti0 2 , FeO, Fe 2 0 3 , Si0 2 , Zr0 2 , Cr0 3 , Cr 2 0 3 , B 2 0 3 , Mo0 3 , V 2 0 5 , CuO, MgO and NiO or to the group of metals or their alloys, preferably iron, nickel, titanium or aluminum and moreover carbon, boron or nitrided compounds.
- ferroalloys preferably FerroTi, FerroCr, FerroNb, FerroW, FerroMo, FerroB, FerroSi, FerroZr or FerroV, or preferably belong to the group of oxides Ti0 2 , FeO, Fe 2 0 3
- Figure 1 shows a slip 1 spread at the places where it is desired to strengthen the casting 2 in the mold 1.
- Figure 2 shows the invention in the form of reinforcing inserts 3 in the casting 2 in the mold 1.
- Figures 3, 4, and 5 show hardness imprints for a chrome cast iron (fig.3), a pure ceramic (fig. 4) and a reinforced alloy (fig.5) to the ceramic according to the present invention.
- Figure 6 shows particles of TiC in iron alloy, resulting from an in situ reaction of FerroTi with carbon to give TiC in an iron-based matrix.
- the size of the TiC particles is of the order of a few microns.
- the present invention provides foundry parts whose wear surfaces are reinforced by placing in the mold, before casting, elements made of powders, capable of reacting in situ and under the sole action of the heat of the casting.
- reactive elements are used, in compacted powders, which are fixed in the mold in the form of wafers or inserts 3 of desired shapes, or even in the form of a coating 4 covering the mold. 1 where part 2 is likely to be reinforced.
- the elements capable of reacting in situ give rise to hard compounds of the carbide, boride, oxide, nitride or intermetallic compound type. These, once formed, will be added to the carbides possibly already present in the casting alloy so as to further increase the proportion of hard particles with a hardness Hv> 1300 and which participate in increasing the resistance to wear. These are "infiltrated” at around 1500 ° C by the cast metal, and form an addition of abrasion-resistant particles incorporated into the structure of the metal used for casting (Fig. 6). Furthermore, unlike the methods of the prior art, it is not necessary to use pure metal powders to obtain this reaction in situ.
- the proposed method advantageously allows the use of inexpensive ferroalloys or oxides to obtain extremely hard particles embedded in the matrix formed by the metal of the casting at the place where a reinforcement of the wear resistance is necessary.
- the invention does not require any densification, therefore compression, a posteriori, of the reinforced structural parts, but takes advantage of the porosity thus created in said parts to allow infiltration at high temperature of the metal poured into the interstices. (Fig.6).
- This does not require any particular protective atmosphere and is done at atmospheric pressure with the heat provided by the casting, which obviously has a particularly positive impact on the cost of the process.
- a structure is thus obtained with very advantageous characteristics in terms of simultaneous resistance to impact and abrasion.
- the hardness values reached by the particles thus introduced into the reinforced surfaces are in a range from 1300 to 3000 Hv.
- the compound obtained has a hardness greater than 1000 Hv 20 while retaining a toughness greater than .
- the toughness is measured by indentation, which means that an impression is made using a pyramidal diamond penetrator subjected to a calibrated load.
- the raw materials, intended to produce the component belong to the group of ferroalloys, preferably FerroTi, FerroCr, FerroNb, FerroW, FerroMo, FerroB, FerroSi, FerroZr or FerroV, they can also belong to the group of oxides, preferably Ti0 2 , FeO, Fe 2 0 3 , Si0 2 , Zr0 2 , Cr0 3 , Cr 2 0 3 , B 2 0 3 , Mo0 3 , V 2 0 5 , CuO, MgO and NiO, or to the group of metals or their alloys, preferably iron, nickel, titanium or aluminum and moreover carbon, boron or nitride compounds. ,
- the reactions used in the present invention are generally of the type: FeTi + C -> TiC + Fe
- the reaction speed can be controlled by different additions of metals, alloys or particles not participating in the reaction. These additions can moreover be advantageously used to modify, as necessary, the toughness or other properties of the composite created in situ. This is represented by the following illustrative reactions: Fe 2 0 3 + 2A1 + xAl 2 0 3 -> (1 + x) Al 2 0 3 + 2Fe Ti + C + Ni -> TiC + Ni
- the first preferred embodiment of the invention consists in compacting by simple pressing with cold the reactive powders chosen. This is carried out in a compression mold taking the desired shape of the insert or the preform 3, possibly in the presence of a binder, for the reinforcement of the casting 2. This insert or preform will then be fixed in the mold. casting 1 at the desired location.
- a particle size distribution is chosen whose D50 is between 1 and 1000 microns, and preferably less than 100 ⁇ . Practical experience has shown that this particle size achieves an ideal compromise between the handling of the raw material, the infiltrability of the porous product and the control of the reaction.
- the hot metal initiates the reaction of the preform or the insert which transforms into a conglomerate with a porous structure of hard particles. This conglomerate, still at high temperature, is itself infiltrated and drowned by the casting metal constituting the part. This step takes place between 1400 and 1700 ° C depending on the casting temperature of the alloy chosen to make the part.
- a second preferred embodiment is the use of a slip (paste) 4 containing the various reactive elements in order to coat certain parts of the mold 1 or of the cores. The application of one or more coats is possible depending on the desired thickness. These various layers are then left to dry before pouring the metal into the mold 1. This molten metal will also initiate the reaction to create a porous layer which is infiltrated immediately after its reaction to form a structure which is particularly resistant to both impact and to wear.
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- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Organic Chemistry (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Manufacturing & Machinery (AREA)
- Chemical Kinetics & Catalysis (AREA)
- Dispersion Chemistry (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Powder Metallurgy (AREA)
- Ceramic Products (AREA)
- Mold Materials And Core Materials (AREA)
- Pens And Brushes (AREA)
- Refinement Of Pig-Iron, Manufacture Of Cast Iron, And Steel Manufacture Other Than In Revolving Furnaces (AREA)
- Compositions Of Oxide Ceramics (AREA)
- Multiple-Way Valves (AREA)
- Transplanting Machines (AREA)
Abstract
Description
Claims
Priority Applications (13)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
HU0500923A HU226782B1 (en) | 2001-12-04 | 2002-09-30 | Cast part with enhanced wear resistance |
DE2002610660 DE60210660T2 (de) | 2001-12-04 | 2002-09-30 | Giessereistück mit verbesserter verschleissfestigkeit |
AU2002340644A AU2002340644B2 (en) | 2001-12-04 | 2002-09-30 | Cast part with enhanced wear resistance |
MXPA04005502A MXPA04005502A (es) | 2001-12-04 | 2002-09-30 | Partes coladas con mejor resistencia al desgaste. |
UA20040705317A UA75497C2 (en) | 2001-12-04 | 2002-09-30 | Cast wear part and method for its production |
CA 2468352 CA2468352C (fr) | 2001-12-04 | 2002-09-30 | Pieces de fonderie avec une resistance accrue a l'usure |
JP2003549029A JP4222944B2 (ja) | 2001-12-04 | 2002-09-30 | 強化された摩耗抵抗性を持つ鋳造部品 |
BR0215127A BR0215127B1 (pt) | 2001-12-04 | 2002-09-30 | método para produzir partes de desgaste fundida. |
EP20020774176 EP1450973B1 (fr) | 2001-12-04 | 2002-09-30 | Pieces de fonderie avec une resistance accrue a l'usure |
ZA2004/04263A ZA200404263B (en) | 2001-12-04 | 2004-05-31 | Cast part with enhanced wear resistance |
US10/860,546 US7935431B2 (en) | 2001-12-04 | 2004-06-04 | Cast parts with enhanced wear resistance |
US11/336,221 US7513295B2 (en) | 2001-12-04 | 2006-01-20 | Cast parts with enhanced wear resistance |
US11/613,681 US20070090169A1 (en) | 2001-12-04 | 2006-12-20 | Cast Parts with Enhanced Wear Resistance |
Applications Claiming Priority (2)
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EP01870267.0 | 2001-12-04 | ||
EP01870267 | 2001-12-04 |
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US10/860,546 Continuation US7935431B2 (en) | 2001-12-04 | 2004-06-04 | Cast parts with enhanced wear resistance |
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WO2003047791A1 true WO2003047791A1 (fr) | 2003-06-12 |
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PCT/BE2002/000150 WO2003047791A1 (fr) | 2001-12-04 | 2002-09-30 | Pieces de fonderie avec une resistance accrue a l'usure |
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US (3) | US7935431B2 (fr) |
EP (1) | EP1450973B1 (fr) |
JP (1) | JP4222944B2 (fr) |
KR (1) | KR100860249B1 (fr) |
CN (1) | CN1275723C (fr) |
AT (1) | ATE322950T1 (fr) |
AU (1) | AU2002340644B2 (fr) |
BR (1) | BR0215127B1 (fr) |
CA (1) | CA2468352C (fr) |
DE (1) | DE60210660T2 (fr) |
DK (1) | DK1450973T3 (fr) |
ES (1) | ES2258158T3 (fr) |
HU (1) | HU226782B1 (fr) |
MA (1) | MA27294A1 (fr) |
MX (1) | MXPA04005502A (fr) |
PL (1) | PL204095B1 (fr) |
PT (1) | PT1450973E (fr) |
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WO2010031662A1 (fr) * | 2008-09-19 | 2010-03-25 | Magotteaux International S.A. | Materiau composite hierarchique |
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WO2021160381A1 (fr) | 2020-02-11 | 2021-08-19 | Magotteaux International S.A. | Piece d'usure composite |
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2002
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- 2002-09-30 ES ES02774176T patent/ES2258158T3/es not_active Expired - Lifetime
- 2002-09-30 UA UA20040705317A patent/UA75497C2/uk unknown
- 2002-09-30 WO PCT/BE2002/000150 patent/WO2003047791A1/fr active IP Right Grant
- 2002-09-30 PL PL370794A patent/PL204095B1/pl unknown
- 2002-09-30 HU HU0500923A patent/HU226782B1/hu unknown
- 2002-09-30 KR KR1020047008689A patent/KR100860249B1/ko active IP Right Grant
- 2002-09-30 DE DE2002610660 patent/DE60210660T2/de not_active Expired - Lifetime
- 2002-09-30 MX MXPA04005502A patent/MXPA04005502A/es active IP Right Grant
- 2002-09-30 EP EP20020774176 patent/EP1450973B1/fr not_active Expired - Lifetime
- 2002-09-30 RU RU2004118415/02A patent/RU2004118415A/ru unknown
- 2002-09-30 PT PT02774176T patent/PT1450973E/pt unknown
- 2002-09-30 AT AT02774176T patent/ATE322950T1/de active
- 2002-09-30 CA CA 2468352 patent/CA2468352C/fr not_active Expired - Lifetime
- 2002-09-30 AU AU2002340644A patent/AU2002340644B2/en not_active Expired
- 2002-09-30 BR BR0215127A patent/BR0215127B1/pt active IP Right Grant
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- 2004-05-28 MA MA27705A patent/MA27294A1/fr unknown
- 2004-05-31 ZA ZA2004/04263A patent/ZA200404263B/en unknown
- 2004-06-04 US US10/860,546 patent/US7935431B2/en not_active Expired - Fee Related
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2006
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Cited By (10)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
WO2010031661A1 (fr) * | 2008-09-19 | 2010-03-25 | Magotteaux International S.A. | Cône de broyage pour concasseur a compression |
WO2010031662A1 (fr) * | 2008-09-19 | 2010-03-25 | Magotteaux International S.A. | Materiau composite hierarchique |
WO2010031660A1 (fr) * | 2008-09-19 | 2010-03-25 | Magotteaux International S.A. | Dent composite pour le travail du sol ou des roches |
BE1018128A3 (fr) * | 2008-09-19 | 2010-05-04 | Magotteaux Int | Cone de broyage pour concasseur a compression. |
BE1018127A3 (fr) * | 2008-09-19 | 2010-05-04 | Magotteaux Int | Dent composite pour le travail du sol ou des roches. |
BE1018130A3 (fr) * | 2008-09-19 | 2010-05-04 | Magotteaux Int | Materiau composite hierarchique. |
WO2021160381A1 (fr) | 2020-02-11 | 2021-08-19 | Magotteaux International S.A. | Piece d'usure composite |
US11534822B2 (en) | 2020-02-11 | 2022-12-27 | Magotteaux International S.A. | Composite wear part |
EP3915699A1 (fr) | 2020-05-29 | 2021-12-01 | Magotteaux International SA | Pièce d'usure composite céramique-métal |
WO2021239294A1 (fr) | 2020-05-29 | 2021-12-02 | Magotteaux International S.A. | Piece d'usure composite ceramique-metal |
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