CN1708372A - Metal powder injection molding material and metal powder injection molding method - Google Patents
Metal powder injection molding material and metal powder injection molding method Download PDFInfo
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- CN1708372A CN1708372A CNA2003801024499A CN200380102449A CN1708372A CN 1708372 A CN1708372 A CN 1708372A CN A2003801024499 A CNA2003801024499 A CN A2003801024499A CN 200380102449 A CN200380102449 A CN 200380102449A CN 1708372 A CN1708372 A CN 1708372A
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- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
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- 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
- B22F3/00—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces
- B22F3/22—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip
- B22F3/225—Manufacture of workpieces or articles from metallic powder characterised by the manner of compacting or sintering; Apparatus specially adapted therefor ; Presses and furnaces for producing castings from a slip by injection molding
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- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
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- 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/10—Metallic powder containing lubricating or binding agents; Metallic powder containing organic material
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- 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
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Abstract
Disclosed is a novel metal powder injection molding material containing a) 40 to 70 percent by volume of powdered metal, including at least 50 percent by weight relative to the entire quantity of metal of an iron-containing powder, at least 90 percent by weight relative to the quantity of the iron-containing powder of the particles of said iron-containing powder having an effective diameter of at least 40 micrometers, b) 30 to 60 percent by volume of a thermoplastic binder, and c) 0 to 5 percent by volume of a dispersing adjuvant and/or other optional adjuvants. Said injection molding material is deformed by injection molding, the binder is removed from the injection-molded pieces, and the injection-molded pieces from which the binder has been removed are sintered.
Description
The present invention relates to a kind of metal injection method.
Metal injection method (MIM, also be commonly referred to as the powder injection molding, PIM) be a kind of by the thermoplasticity injection molded material is carried out the powder metallurgy process that injection molding is made mechanograph, described thermoplasticity injection molded material comprises the thermoplastic adhesive of metal dust and common at least 30 volume %, then this adhesive is removed from described mechanograph, and this mechanograph of sintering obtains final workpiece.The metal injection method combines by the advantage of the injection molding shaping of knowing from plastics technology and the advantage of prior powder metallurgy.In prior powder metallurgy (being commonly referred to P/M), make metal dust (wherein usually in this metal dust, adding the lubricant that reaches as high as 10 volume %, for example oil or wax) form needed shape by compression molding, and this mechanograph of sintering then.The advantage of powder metallurgic method is freely to select material.In powder metallurgic method, by the sintering metal powder mixture, can make can not be by the material of pyrometallurgy method preparation.The remarkable defective of the prior powder metallurgy of being undertaken by compression molding and sintering is that it is unsuitable for producing the workpiece of the geometry with relative complex.For example, can not have the shape of undercutting (promptly crossing the recessed of compression direction) by compression molding and sintering manufacturing.On the contrary, in injection molding, almost can make the shape of any needs.On the other hand, the defective of metal injection method is to occur anisotropy sometimes under the situation that is big workpiece, and must carry out independent step to remove binding agent.Therefore the metal injection method be mainly used in have complicated shape than small workpiece.
An important parameters of PM technique is the component of the particle diameter or the employed metal powder mixture of employed metal dust.Usually, the d90 value of unit for micron described in this article.The relevant powder that it represents 90 weight % is to exist with the form that particle diameter is no more than the particle of this d90 value.Similar d10 or d50 value (sometimes, also use capital D, thereby be D10, D50 or D90 with value representation) have been described once in a while.When being spherical particle, the particle diameter of measurement is equivalent to sphere diameter; When being aspherical particle, this measuring method (being generally laser diffractometry) must be measured the effective diameter of the particle of the spherical particle diameter that is equivalent to equal volume.
In the metal injection method of iron-bearing materials, always be to use thinner little metallic particles, particularly iron or steel particles.Although this tiny metallic particles is relatively expensive and because they are easy to lump and their pyrophorisity is difficult to processing, they have sintering character preferably.This at low-alloy steel (in the context of the present invention, low-alloy steel is understood that to represent that iron content is at least 90 weight %, is the steel that the content of alloying element is no more than 10 weight %) situation in be particular importance, because high-alloy steel is generally than the easier very well sintering of low-alloy steel, that is, obtain the workpiece of even and fine and close sintering.Therefore in the situation of metal injection method, when particularly producing the thermal sintering product by low-alloy steel, always being to use the d90 value is 0.5 to 20 micron iron or powdered steel, and only they just have and are no more than about 30 microns d90 value at most under considerably less situation.Because the metal injection material that is ready to use has than higher binder content, prevented contacting of single metal particle and aerial oxygen, thereby can control the characteristic of autoigniting of the tiny metallic particles in the powder injection molded material.On the other hand, in the prior powder metallurgy method, the fine powder with caking tendency causes the filling of mechanograph inhomogeneous usually, and the characteristic of autoigniting of metal dust makes us can't stand.Therefore in the prior powder metallurgy method of being undertaken by compression molding and sintering, always being to use the d90 value is more coarse particle more than 40 microns.
A.R.Erickson and R.E.Wiech are at Injection Molding (injection molding), ASMHandbook (ASM handbook), the 7th volume, Powder Metallurgy (powder metallurgy), American Society for Metals (american society for metals) summarizes metal injection method technology in 1993 version (ISBN0-87170-013-1).R.M.German and A.Bose are at Injection Molding of Metals and Ceramics (metal and ceramic injection molding), MetalPowder Industries Federation (MPIF), the Princeton, the New Jersey, sum up powder casting process (metal and pottery) in 1997 version (ISBN 1-878-954-61-X), particularly in the 3rd chapter, summarized the powder that is used for the powder injection molding.L.F.Pease III and V.C.Potter disclose the exemplary alloy in the powder metallurgic method and the obtainable performance of the workpiece produced thus in Mechanical Properties of PIM Materials (mechanical performance of PIM material).
EP 446 708 A2 (patent families: US 5,198,489), EP 465 940 A2 (patent families: US 5,362,791), EP 710 516 A2 (patent families: US 5,802,437) and WO 94/25205 (patent families: US 5,611,978) the various injection molded material that are used for metal injection method method are disclosed, and metal injection method method, in these methods, binding agent catalysis from the injection moulding workpiece is removed, then with workpiece sintering.EP 582 209 A1 (patent families: US 5,424,445) disclose some dispersant that is used as auxiliary agent in the powder injection molded material.WO 01,/81 467 A1 discloses the adhesive system that is used for the metal injection method.On the other hand, WO 96,/08 328 A1 discloses the typical component that is used for the prior powder metallurgy method of being undertaken by compression molding and sintering, uses and reaches as high as the polyethers wax of 10 weight % as lubricant.
Still needing can broader applications and especially economic injection molded material and injection molding method.One object of the present invention is the injection molded material that but metal injection method a kind of economy and extensive use is provided and is used for this purpose.
Have been found that by the metal injection material that comprises following composition and realized this purpose:
A) metal dust of 40 to 70 volume %, it comprises the iron powder that contains based on total metal content at least 50 weight %, and contains the amount of iron powder based on this, and at least 90 weight % iron content particles of powder have the effective diameter that is at least 40 microns,
B) thermoplastic adhesive of 30 to 60 volume %, and
C) dispersant of 0 to 5 volume % and/or other auxiliary agents.
In addition, we also find a kind of metal injection method method, wherein by injection molding this injection molded material that is shaped, remove binding agent from the workpiece of this injection molding, and the workpiece of described binder free is carried out sintering.
This new metal injection material comprises thick iron of relative extreme or ferroalloy powder.The present invention is based on following understanding: although opposite with part those skilled in the art's suggestion, but still think that this thick metal dust also can produce gratifying result in the metal injection method, and also accomplished this point really, particularly when producing the thermal sintering article by low-alloy steel.This thick metal dust makes the cost of metal injection material significantly reduce, and makes their processing become easier.Sinter molding article by this new method manufacturing have at least and the same good performance of making by prior powder metallurgy of sintering article, but also can be manufactured with very complicated geometry.
This new metal injection material comprises respectively based at least 40 volume % of the cumulative volume of injection molded material, preferred at least 45 volume % usually and is no more than 70 volume % usually, preferably is no more than the metal dust of 60 volume %.Common in powder metallurgic method, described metal dust can be the mixture of the pure powder of mixture, the metal alloy of single pure metal powder, different pure metal powders, different metal alloy powders or the mixture of one or more pure metal powders and one or more metal alloy powders.Total composition of powder has determined total composition of final thermal sintering article, and select according to required composition, and also common in powder metallurgic method, can during sintering, determine the needed carbon of final thermal sintering article, oxygen and/or nitrogen content.
At least a metal dust that is contained in this new injection molded material contains iron.This contains iron powder and is preferably low-alloy steel or pure iron.In one embodiment, the metal dust in this novel powder injection molded material is made up of iron fully, as selection, also can have the carbon content of 0 to 0.9 weight %.In another embodiment, this metal dust is made up of low-alloy steel, this low-alloy steel comprises carbon, 0 to 10 weight % nickel, the molybdenum of 0 to 6 weight %, the copper of 0 to 11 weight %, the chromium of 0 to 5 weight %, the manganese of 0 to 1 weight %, the silicon of 0 to 1 weight %, the vanadium of 0 to 1 weight % and the cobalt of 0 to 1 weight % of 0 to 0.9 weight %, all the other are iron, and the total amount of existing whole elements is no more than 10 weight % outside the deironing.In this case, be contained in the iron that metal dust in this new metal injection material preferably comprises at least 90 weight %.
Based on the total amount of metal dust, the metal dust of at least 50 weight % comprises and contains iron powder in this new injection molded material.Preferably, based on the total amount of metal dust, the metal dust of at least 60 weight %, preferred especially at least 80 weight % comprises and contains iron powder in this novel powder injection molded material.In an embodiment of this novel powder injection molded material, only contain iron powder as metal dust with this.
But except this contains iron powder, can also use other metal dusts, these metal dusts both can also comprise iron except other element, also can even be made up of iron.For example, low-alloy steel be by the intermediate alloy technology by iron powder and the powder that comprises required alloying element and do not have ferroalloy make, perhaps make by corresponding high-alloy steel or corresponding mixture (prealloy or partially fused powder).These technology all are known.All have material to the present invention is that the metal dust that is present at least 50 weight % in the powder injection molded material comprises and contains iron powder, and containing the amount of iron powder based on this, the iron content particles of powder of at least 90 weight % has the effective diameter that is at least 40 microns.In other words, the metal dust in the novel metal injection molded material comprise at least 50 weight %, particle diameter contains iron powder at least 40 microns (with d90 value representations).Can't help this part that contains the metal dust that iron powder forms is metal dust or the metal powder mixture that is suitable for any needs of metal injection method, and is to select according to the required final composition of the thermal sintering article of desire manufacturing.
In the novel injection molded material contain iron powder by the amount that contains iron powder based on this wherein at least 90 weight % have the particle that is at least 40 microns effective diameters and form.Preferably, this effective diameter is at least 50 microns, especially preferably at least 60 microns.In other words, the d90 value that contains iron powder is at least 40, and preferably at least 50, especially preferably at least 60.Suitable d90 value is, for example 70.The d90 value is to measure according to ISO/DIS standard 13320 " laser diffraction granularity analysis guide " by laser diffractometry.
The metal dust that uses in the novel injection molded material is conventional commercial product.
The novel metal injection molded material comprises respectively the cumulative volume at least 30 volume % based on injection molded material, preferred at least 40 volume % usually and is no more than 60 volume % usually, preferably is no more than the thermoplastic adhesive of 55 volume %.The essence purpose of binding agent is to make the powder injection molded material to have thermoplastic property, and the major criterion whether certain thermoplastic is suitable for as binding agent is the possibility that is removed after injection molding.Known multiple binding agent and the method for from the powder injection molded article, removing binding agent, for example binding agent heat is removed by the pyrolytic of thermoplastic, remove binding agent by the use solvent, or remove binding agent with catalysis by the catalytic decomposition of thermoplastic.Can select for use any known thermoplastic adhesive that is used for the powder injection molding as the thermoplastic adhesive that is used for this novel powder injection molded material.
The binding agent that should use can be removed by catalysis.This adhesive system is normally based on the polyformaldehyde as thermoplastic.Polyformaldehyde is depolymerization under acid catalysis, thereby it can be removed rapidly and at a lower temperature from the injection molding workpiece.This thermoplastic adhesive preferably by the POM-H Acetal homopolymer of 50 to 100 weight % or copolymer and 0 to 50 weight % not with POM-H Acetal homopolymer or copolymer miscible and can be removed the polymer that do not have residue or the mixture of this mixture of polymers is formed by hot method.For example disclosing this binding agent among EP 446 708 A2, EP 465 940 A2 and WO 01/81467 A1, these documents are incorporated herein by reference.
The novel powder injection molded material can also comprise dispersant and/or other auxiliary agents of the amount that is up to 5 volume %.Preferably, it comprises the dispersant of at least 1 weight % and/or other auxiliary agent.Dispersant is used to prevent separation processes, and at for example above-mentioned document of quoting and open in EP 582 209 A1 (it is incorporated herein by reference equally).Add other auxiliary agents normally in order to influence the rheological equationm of state of powder injection molded material.Sometimes, but usually also add carbon, so that during sintering, determine the carbon content in the thermal sintering product with the form of the polymer of graphite form or pyrolysis.These measures are to be known by for example above-mentioned publication of quoting.
The novel powder injection molded material is normally passed through its component mixing is prepared.Preferably by in fusion or fully mix under the pasty state form at least and be prepared.All devices that pastel to liquid substance can be mixed fully all are suitable, for example, can heat kneading machine.The novel powder injection molded material is manufactured into the particle form that is fit to be fed in the conventional injector, the kneading material of for example stranded thing, extrudate, piller or pulverizing.
The novel powder injection molding is to carry out in the mode identical with conventional powder injection molding.For this reason, by injection molding novel injection molded material (being raw material) shaping is obtained green compact (green compact), from the injection molding workpiece, remove binding agent (being the removal of binding agent) and produce middle briquet (brown compact), and should obtain final thermal sintering article by middle briquet sintering by described green compact.
The molded of raw material is to use conventional injector to carry out in a usual manner.From mechanograph, remove thermoplastic adhesive in a usual manner, for example handle and carry out by pyrolytic or by solvent.Preferred in a known way with the atmosphere heat treatment green compact that contain gaseous acid, remove binding agent from containing based on catalysis the preferred novel injection molded material of the binding agent of polyformaldehyde.This atmosphere is evaporated to acid to be had enough vapour pressures and prepares, and perhaps more easily by carrier gas (particularly nitrogen) being fed the container that acid (preferred nitric acid) is housed, will contain acid gas then and feed binding agent and remove baking oven.The best acid concentration that this binding agent is removed in the baking oven depends on that required steel is formed and the size of workpiece, and determines in each situation by routine test.Usually, in 20 to 180 ℃ of processing just were enough to remove binding agent in 10 minutes to 24 hours under this atmosphere.The residue of any thermoplastic adhesive that still exists after removing binding agent and/or auxiliary agent has been up in the process of sintering temperature all by pyrolysis in heating, and is therefore removed fully.
After being shaped and removing binding agent subsequently, sintering mechanograph in sintering furnace obtains the formed article of sintering.Sintering is undertaken by known method.According to needed result, for example, sintering can carried out under air, hydrogen, nitrogen or the admixture of gas or under reduced pressure.
The composition, pressure and the optimum temperature range that are suitable for most the furnace atmosphere of sintering depend on the definite chemical composition of the steel of employed or desire preparation, and are known, perhaps under individual cases, can easily determine by several routine tests.
The best rate of heat addition can be easily definite by several routine tests, and be generally at least 1 ℃, and preferably at least 2 ℃, especially preferred at least 3 ℃ of per minutes.For economy, need the very high rate of heat addition usually.Yet,, usually the rate of heat addition is set in 20 ℃ of per minutes for avoiding that the quality of sinter is had a negative impact.In some cases, in being heated to the process of sintering temperature, to keep one period stand-by period may be favourable being lower than under the temperature of sintering temperature, for example keeps 500 to 700 ℃, and for example 600 ℃ temperature is 30 minutes to 2 hours, for example 1 hour.
The sintering duration of setting, should make the formed article of sintering by sintering fully densely usually at i.e. retention time under sintering temperature.Under normal sintering temperature and shaped product size, the duration of sintering was generally 15 minutes at least, preferably at least 30 minutes.The total duration of sintering processes has determined throughput rate basically, thereby from the viewpoint of economy, sintering preferably carries out to such an extent that make sintering processes not take the time dissatisfactory of looking.Usually, this sintering processes (comprise the heating period but do not contain cooling stage) can be finished at the most after 14 hours.
Formed article by the cooling sintering stops sintering processes.The composition that depends on steel may need specific cooling procedure, and for example cooling very fast is so that obtain high temperature mutually or prevent the separation of steel constituent.For economic reasons, also need usually to cool off very apace to realize high production rate.If have the big degree dissatisfactory economically that arrives of amount, just reached the upper limit of cooling velocity because of the thermal sintering article appearance of the defective (for example crack, fracture or distortion) that too fast cooling causes.Therefore, can in several routine tests, easily determine best cooldown rate.
After sintering, can carry out the post processing of any needs to the thermal sintering article, for example sinter-hardened, austenitizing, annealing, sclerosis, heat treatment, carburizing, surperficial sclerosis, carbo-nitriding, nitriding, steam treatment, molten stream heat treatment, water or oil quenching and/or high temperature insostatic pressing (HIP), the perhaps combination of these steps.Can also during sintering, carry out some steps of these treatment steps in known manner, for example sinter-hardened, nitriding or carbo-nitriding.
Embodiment
Embodiment 1: the Fe-Ni-C steel by the C of nickel that comprises 2 weight % and 0.5 weight % is produced mechanograph:
Can add in the kneading machine of hot laboratory at one, (model ASC 300 with the 4400g iron powder, H gan sAB, 26383 H gan s, Sweden produces, the d50=30 micron, the d90=70 micron, 0.01 the carbon of weight %), the graphite powder (d90=8 micron) of 90g nickel powder (d90=26 micron) and 2.2g and the binding agent, 70g polypropylene and the 30g dispersant that comprise the 500g polyformaldehyde mix by kneading, and fragmentation obtains particle when cooling.Use the screw type injector to handle this particle, obtaining length and be 85.5 millimeters, diameter is the tension test bar of 4 millimeters (according to MPIF standards 50,1992).In batch-type furnace, under blanket of nitrogen (to the red fuming nitric acid (RFNA) that wherein is metered into 25ml/h), this injection molded article is carried out the catalytic elimination of binding agent in 110 ℃ of temperature.Then in drying nitrogen in electric furnace the speed with 5K/ minute be heated to 1360 ℃ with this sample sintering, and kept this temperature 1 hour, and slowly cooling in stove.The density of sample surpasses 7.1g/cm
3Metallographic to the cross section studies show that out the ferrite/pearlitic texture with elongated hole.The carbon content of sample is 0.5 weight %.
At 870 ℃ of following austenitizings, oil hardening with 200 ℃ of annealing 1 hour down, this sample is heat-treated.Their hardness is 43HRC after handling like this.
Embodiment 2
Repeat embodiment 1, difference is that the crude iron pruinescence carbonyl iron powder (d90=10 micron) of 30 weight % substitutes.The density that reaches after the sintering is 7.3g/cm
3And carbon content is 0.5 weight %.Its structure is more even a little than the sample among the embodiment 1 and ratio elongated hole is littler.After the heat treatment, hardness reaches 46HRC.
Comparative Examples
Repeat embodiment 1, difference is that the crude iron powder is substituted by carbonyl iron powder (d90=10 micron) fully.The density that reaches after the sintering is 7.6g/cm
3And carbon content is 0.5 weight %.Aperture all is circular and less than embodiment 1 and 2.After the heat treatment, hardness reaches 55HRC.
These examples show, even use very thick metal dust relatively, the thermal sintering article also can reach typical performance that is not inferior to the formed article by compression molding and sintering manufacturing fully and the performance that is inferior to the typical performance of conventional powder injection molding workpiece hardly.
Claims (6)
1. metal injection material, it comprises:
A) metal dust of 40 to 70 volume %, it comprises the iron powder that contains based on total metal content at least 50 weight %, and contains the amount of iron powder based on this, and at least 90 weight % iron content particles of powder have the effective diameter that is at least 40 microns,
B) thermoplastic adhesive of 30 to 60 volume %, and
C) dispersant of 0 to 5 volume % and/or other auxiliary agents.
2. metal injection material as claimed in claim 1, wherein, based on the described amount that contains iron powder, the described iron content particles of powder of at least 90 weight % has the effective diameter that is at least 50 microns.
3. metal injection material as claimed in claim 2, wherein, based on the described amount that contains iron powder, the described iron content particles of powder of at least 90 weight % has the effective diameter that is at least 60 microns.
4. metal injection material as claimed in claim 1, wherein the total amount of institute's metal-containing powders comprises the iron of at least 90 weight %.
5. metal injection material as claimed in claim 1, wherein said thermoplastic adhesive by the POM-H Acetal homopolymer of 50 to 100 weight % or copolymer and 0 to 50 weight % not with POM-H Acetal homopolymer or copolymer miscible and can be removed the polymer that do not have residue or the mixture of this mixture of polymers is formed by hot method.
6. metal injection method wherein will comprise:
A) metal dust of 40 to 70 volume %, it comprises the iron powder that contains based on total metal content at least 50 weight %, and contains the amount of iron powder based on this, and at least 90 weight % iron content particles of powder have the effective diameter that is at least 40 microns,
B) thermoplastic adhesive of 30 to 60 volume %, and
C) the metal injection material of the dispersant of 0 to 5 volume % and/or other auxiliary agents is shaped by injection molding, removes binding agent from this injection molding workpiece, and with the described workpiece sintering that does not contain binding agent.
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE10250526.8 | 2002-10-29 | ||
| DE10250526 | 2002-10-29 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN1708372A true CN1708372A (en) | 2005-12-14 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CNA2003801024499A Pending CN1708372A (en) | 2002-10-29 | 2003-10-21 | Metal powder injection molding material and metal powder injection molding method |
Country Status (10)
| Country | Link |
|---|---|
| US (1) | US20060099103A1 (en) |
| EP (1) | EP1558417A1 (en) |
| JP (1) | JP2006505688A (en) |
| KR (1) | KR20050059280A (en) |
| CN (1) | CN1708372A (en) |
| AU (1) | AU2003278115A1 (en) |
| CA (1) | CA2503834A1 (en) |
| MX (1) | MXPA05003960A (en) |
| RU (1) | RU2005116300A (en) |
| WO (1) | WO2004039522A1 (en) |
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| DE4007345A1 (en) * | 1990-03-08 | 1991-09-12 | Basf Ag | THERMOPLASTIC MEASURES FOR THE PRODUCTION OF METALLIC MOLDED BODIES |
| DE4021739A1 (en) * | 1990-07-07 | 1992-01-09 | Basf Ag | THERMOPLASTIC MEASURES FOR THE PRODUCTION OF METALLIC MOLDED BODIES |
| DE4225619A1 (en) * | 1992-08-03 | 1994-02-10 | Basf Ag | Alkoxylation products |
| DE4314694C1 (en) * | 1993-05-04 | 1994-05-11 | Basf Ag | Prepn. of sinter mouldings from a mixt. of a sinterable powder and an oxymethylene binding agent - involving removal of binding agent by treatment with a gaseous acid which is solid at room temp. |
| DE4435904A1 (en) * | 1994-10-07 | 1996-04-11 | Basf Ag | Process and injection molding compound for the production of metallic moldings |
| JP2955754B1 (en) * | 1998-06-01 | 1999-10-04 | 有限会社モールドリサーチ | Composition for injection molding of metal powder and injection molding and sintering method using the composition |
| DE10019447A1 (en) * | 2000-04-19 | 2001-10-25 | Basf Ag | An inorganic material binder useful for preparation of metallic and ceramic molded bodies removable in two stages without residue, giving green body and metallic or ceramic molded bodies devoid of pores and cracks |
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2003
- 2003-10-21 RU RU2005116300/02A patent/RU2005116300A/en not_active Application Discontinuation
- 2003-10-21 CA CA002503834A patent/CA2503834A1/en not_active Abandoned
- 2003-10-21 US US10/533,315 patent/US20060099103A1/en not_active Abandoned
- 2003-10-21 EP EP03769426A patent/EP1558417A1/en not_active Ceased
- 2003-10-21 WO PCT/EP2003/011624 patent/WO2004039522A1/en not_active Application Discontinuation
- 2003-10-21 JP JP2004547537A patent/JP2006505688A/en not_active Withdrawn
- 2003-10-21 CN CNA2003801024499A patent/CN1708372A/en active Pending
- 2003-10-21 MX MXPA05003960A patent/MXPA05003960A/en unknown
- 2003-10-21 KR KR1020057006819A patent/KR20050059280A/en not_active Application Discontinuation
- 2003-10-21 AU AU2003278115A patent/AU2003278115A1/en not_active Abandoned
Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN100434473C (en) * | 2006-02-27 | 2008-11-19 | 南京工业大学 | Nano vacuum restoration agent and its preparation and application |
| CN102387882A (en) * | 2009-04-09 | 2012-03-21 | 巴斯夫欧洲公司 | Method for producing a turbine wheel for an exhaust gas turbocharger |
| CN103917315A (en) * | 2011-09-07 | 2014-07-09 | 巴斯夫欧洲公司 | Binders and processes for producing metallic or ceramic moldings in powder injection molding |
| CN103917315B (en) * | 2011-09-07 | 2016-08-24 | 巴斯夫欧洲公司 | For preparing binding agent and the method for metal pattern goods or ceramic moulded goods in powder injection molding |
Also Published As
| Publication number | Publication date |
|---|---|
| AU2003278115A1 (en) | 2004-05-25 |
| WO2004039522A1 (en) | 2004-05-13 |
| CA2503834A1 (en) | 2004-05-13 |
| JP2006505688A (en) | 2006-02-16 |
| US20060099103A1 (en) | 2006-05-11 |
| EP1558417A1 (en) | 2005-08-03 |
| RU2005116300A (en) | 2006-02-10 |
| KR20050059280A (en) | 2005-06-17 |
| MXPA05003960A (en) | 2005-06-22 |
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