EP3546125B1 - Produit de grenaillage comprenant une alliage d'aluminium et scandium destinée au grenaillage de nettoyage d'un produit à base d'aluminium et/ou de magnésium - Google Patents

Produit de grenaillage comprenant une alliage d'aluminium et scandium destinée au grenaillage de nettoyage d'un produit à base d'aluminium et/ou de magnésium Download PDF

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Publication number
EP3546125B1
EP3546125B1 EP19165209.8A EP19165209A EP3546125B1 EP 3546125 B1 EP3546125 B1 EP 3546125B1 EP 19165209 A EP19165209 A EP 19165209A EP 3546125 B1 EP3546125 B1 EP 3546125B1
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EP
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Prior art keywords
component
alloy
blasting
blasting medium
particles
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EP19165209.8A
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German (de)
English (en)
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EP3546125A1 (fr
Inventor
Frank Palm
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Airbus Defence and Space GmbH
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Airbus Defence and Space GmbH
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    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C11/00—Selection of abrasive materials or additives for abrasive blasts
    • 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
    • B22F1/05—Metallic powder characterised by the size or surface area of the particles
    • 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
    • B22F3/10—Sintering only
    • B22F3/105—Sintering only by using electric current other than for infrared radiant energy, laser radiation or plasma ; by ultrasonic bonding
    • 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
    • B22F3/24—After-treatment of workpieces or articles
    • B—PERFORMING OPERATIONS; TRANSPORTING
    • B24—GRINDING; POLISHING
    • B24C—ABRASIVE OR RELATED BLASTING WITH PARTICULATE MATERIAL
    • B24C3/00—Abrasive blasting machines or devices; Plants
    • B24C3/32—Abrasive blasting machines or devices; Plants designed for abrasive blasting of particular work, e.g. the internal surfaces of cylinder blocks
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C23/00—Alloys based on magnesium
    • C22C23/02—Alloys based on magnesium with aluminium as the next major constituent
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/66—Treatment of workpieces or articles after build-up by mechanical means
    • 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
    • B22F10/00—Additive manufacturing of workpieces or articles from metallic powder
    • B22F10/60—Treatment of workpieces or articles after build-up
    • B22F10/68—Cleaning or washing
    • 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
    • B22F3/24—After-treatment of workpieces or articles
    • B22F2003/247—Removing material: carving, cleaning, grinding, hobbing, honing, lapping, polishing, milling, shaving, skiving, turning the surface
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • B22F2009/0848—Melting process before atomisation
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/05—Light metals
    • B22F2301/052—Aluminium
    • 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
    • B22F2301/00—Metallic composition of the powder or its coating
    • B22F2301/05—Light metals
    • B22F2301/058—Magnesium
    • 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
    • B22F2304/00—Physical aspects of the powder
    • B22F2304/10—Micron size particles, i.e. above 1 micrometer up to 500 micrometer
    • 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
    • B22F9/00—Making metallic powder or suspensions thereof
    • B22F9/02—Making metallic powder or suspensions thereof using physical processes
    • B22F9/06—Making metallic powder or suspensions thereof using physical processes starting from liquid material
    • B22F9/08—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying
    • B22F9/082—Making metallic powder or suspensions thereof using physical processes starting from liquid material by casting, e.g. through sieves or in water, by atomising or spraying atomising using a fluid
    • C—CHEMISTRY; METALLURGY
    • C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22C—ALLOYS
    • C22C21/00—Alloys based on aluminium
    • C22C21/06—Alloys based on aluminium with magnesium as the next major constituent

Definitions

  • the present invention relates to a blasting agent for blasting a component, the component comprising Al and/or Mg, in particular an Al and/or Mg alloy, a method for blasting a component, the component comprising Al and/or Mg, in particular an Al and/or Mg alloy, a method for producing a blasting medium, and a method for producing a blasted component.
  • powder residues adhering to the machine should be removed after production, which in further processing can be disadvantageous, for example due to the roughness produced in this way.
  • the corresponding blasting agents differ from the material of the component and can lead to contamination if, for example, blasting agents get stuck in the surface and/or abrasion occurs on the surfaces of the Al or Mg components chemically stressed with foreign alloy material, which can lead to corrosion problems or strength problems.
  • This is particularly the case when high-strength alloys such as AlMgSc alloys, such as Scalmalloy ® alloys, are blasted.
  • a further pickling step can therefore follow in order to remove this blasting material.
  • a corresponding step is associated with additional effort.
  • the CN 104846239A discloses an aluminum alloy shot, and a method of making the same.
  • the object of the present invention is to provide an improved method for blasting a component that contains Al and/or Mg, and also a blasting material that can be used in such a method.
  • this object is achieved by a blasting agent with the features of patent claim 1, by a method with the features of patent claim 6, by a method with the features of patent claim 12, and by a method with the features of patent claim 14.
  • the component comprising Al and/or Mg is blasted with a blasting agent which comprises an AlSC alloy, the blasting agent comprising particles of the AlSc alloy with a size of 45 ⁇ m or more, i.e. the blasting agent of the same species or is at least similar to the material of the component, whereby contamination can be reduced or even avoided.
  • a blasting agent also referred to as blasting material
  • blasting material is an auxiliary material that can be used in blasting. It comprises a large number of particles, which usually all essentially consist of the same material.
  • the shape of the particles of the blasting agent is not particularly restricted within the scope of the invention, with regard to the blasting agent according to the invention and the method according to the invention, and the particles can be round, angular and/or angular and are, for example, angular and angular.
  • the blasting medium usually has a higher hardness than the component to be blasted, in particular so that it can also perform its function.
  • the blasting agent according to the invention consists of an alloy or a plurality of alloys, in particular an alloy, ie includes in particular no ceramic parts.
  • the blasting agent is used in particular for cleaning and/or surface smoothing, ie it is a cleaning and/or surface smoothing blasting agent.
  • the blasting agent according to the invention is chemically inert to the material of the component to be blasted, ie it does not damage the component, for example through corrosion.
  • the present invention relates to a blasting agent for blasting a component, the component comprising Al and/or Mg, in particular an Aland/or Mg alloy, the blasting agent comprising an AlSc alloy, the blasting agent particles of AlSc -Alloy with a size of 45 ⁇ m or more.
  • the component is not particularly limited here, provided it includes Al and/or Mg, in particular Al, and can have any shape and configuration.
  • at least one surface of the component to be blasted comprises Al and/or Mg, in particular an Al and/or Mg alloy, for example an alloy comprising Al and Mg.
  • the component consists essentially of an Al and/or Mg or Mg alloy or consists of the Al and/or Mg alloy.
  • the Al and/or Mg alloy is not particularly restricted here and can, for example, be an alloy of Al with a suitable material, ie for example a 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx or 8xxx alloy.
  • the component comprises Sc, in particular in an amount of 0.3% by weight or more, preferably 0.5% by weight or more, for example 0.5-3% by weight Sc, for example 0.7-0. 8 wt% Sc.
  • the component comprises an AlSc alloy, in particular an AlMgSc alloy, and the component preferably consists of an AISc alloy, in particular an AlMgSc alloy, in particular with an Sc content of 0.3% by weight or more, preferably 0 .5% by weight or more, for example 0.5-3% by weight, for example 0.7-0.8% by weight.
  • the component in particular in addition to Sc, can also include other alloying components, which are not particularly restricted.
  • the component includes Zr and/or Mn.
  • the component comprises an AlSc alloy, in particular an AlMgSc alloy, which comprises Zr and/or Mn, in particular Zr, and consists in particular of such an alloy.
  • the ratio of Zr to Sc is in particular in a range from 1:10 to 2:1, preferably 1:7 to 1:1, more preferably 1:5 to 1:2.
  • unavoidable impurities can also be contained according to certain embodiments.
  • the component is produced by a powder melting process or a powder sintering process, preferably by a laser powder bed melting process.
  • the powder melting method and the powder sintering method are not particularly limited, and examples of such methods include selective laser sintering, electron beam melting or selective laser melting, which methods are not particularly limited.
  • the device is manufactured by Laser Powder Bed Melting (LBP-S), such as that used for 3D printing.
  • LBP-S Laser Powder Bed Melting
  • the method itself is again not particularly limited.
  • the production takes place with powders having a particle size of 20 to 75 ⁇ m, preferably 20 to 65 ⁇ m, more preferably 20 to 45 ⁇ m.
  • Corresponding powder fractions can be obtained correspondingly with a sieve analysis with corresponding Sieves with mesh sizes of 20 ⁇ m, 45 ⁇ m, 65 ⁇ m and 75 ⁇ m, depending on the desired fraction.
  • the blasting agent is not particularly limited as long as it comprises an AISc alloy, wherein the blasting agent comprises particles of the AlSc alloy having a size of 45 ⁇ m or more.
  • a powder for the production of the blasting agent can be produced by conventional methods for producing powders for powder metallurgy and/or for powder melting methods or powder sintering methods, preferably laser powder bed melting methods, which are not particularly restricted.
  • the powder for producing the blasting agent can be produced by atomizing a metal melt or a melt of a metal alloy and separating off a suitable particle fraction.
  • the powder for the abrasive is produced by the same process as the material for the production of the component.
  • the powder for the blasting agent and the powder for producing the component are produced in the same process, in particular in the same process step, e.g.
  • a powder production campaign so that, for example, both powders from the production campaign can be separated from one another, for example by screening.
  • particles of the powder produced are used for the production of the blasting medium, which are not used for the production of the component, for example due to the particle size.
  • the particles for producing the blasting agent are larger than the particles for producing the component.
  • the blasting agent comprises Sc, in particular in an amount of 0.3% by weight or more, preferably 0.5% by weight or more, for example 0.5-3
  • the blasting agent comprises an AISc alloy, in particular an AlMgSc alloy, and the component preferably consists of an AlSc alloy, in particular an AlMgSc alloy, in particular with an Sc content of 0.3% by weight or more, preferably 0. 5 wt% or more, e.g. 0.5 - 3 wt%, e.g. 0.7 - 0.8 wt%.
  • the advantage of using such an alloy is, in particular, that chemically it can essentially behave like pure aluminum.
  • the blasting agent can also include other alloy components, which are not particularly restricted.
  • the blasting agent comprises Zr and/or Mn.
  • the blasting agent comprises an AlSc alloy, in particular an AlMgSc alloy, which comprises Zr and/or Mn, in particular Zr, and consists in particular of such an alloy.
  • the ratio of Zr to Sc is in particular in a range from 1:10 to 2:1, preferably 1:7 to 1:1, more preferably 1:5 to 1:2.
  • unavoidable impurities can also be contained according to certain embodiments.
  • the blasting agent comprises particles of the Al and/or Mg alloy with a size of 45 ⁇ m or more, preferably 65 ⁇ m or more, more preferably 75 ⁇ m or more, even more preferably at least 80 ⁇ m, for example with a particle size x of 45 ⁇ m ⁇ x ⁇ 200 ⁇ m, preferably 65 ⁇ m ⁇ x ⁇ 200 ⁇ m, more preferably 75 ⁇ m ⁇ x ⁇ 200 ⁇ m, even more preferably 80 ⁇ m ⁇ x ⁇ 200 ⁇ m, and particularly preferably it consists of these.
  • Corresponding particles can in turn be obtained, for example, by means of a sieve analysis with sieves with mesh sizes of 45 ⁇ m, 65 ⁇ m, 75 ⁇ m, 80 ⁇ m and 200 ⁇ m, depending on the desired fraction. If the abrasive particles are too small, they will not produce enough blasting effect. If the particles are too large, they are more difficult to accelerate sufficiently to radiate to have an appropriate effect.
  • the blasting agent was heated by a heat treatment at a temperature of 250°C - 400°C, preferably 275°C - 350°C, more preferably 300 - 325°C, e.g. 325°C, and/or in a period of 15 - 6000 min, preferably 60 to 240 min, more preferably 90 to 150 min, eg 120 min.
  • the blasting agent can be further solidified compared to untreated particles.
  • the blasting agent comprises Al and Sc, preferably Al, Mg and Sc, precipitation hardening of the Sc can take place here, so that a coherent Al3Sc phase can form.
  • an Al3ScZr phase can also form, which can further contribute to the hardness of the blasting abrasive.
  • the blasting agent was preferably treated by heat treatment at a temperature of 250°C - 400°C, preferably 275°C - 350°C, more preferably 300 - 325°C, e.g. 325°C, for a period of 15 - 6000 min. preferably cured for 60 to 240 minutes, more preferably 90 to 150 minutes, for example 120 minutes.
  • the higher the temperature of the heat treatment the shorter the period of time is preferably.
  • the blasting agent has a hardness of >150 HB.
  • the hardness can be suitably determined here, for example according to Brinell, for example according to EN ISO 6506 (EN ISO 6506-1 to EN ISO 6506-4).
  • Another aspect of the present invention relates to a method for blasting a component, the component comprising Al and/or Mg, in particular an Al and/or Mg alloy, the blasting agent comprising an AlSc alloy, the blasting agent particles of AlSc alloy with a size of 45 ⁇ m or more includes, wherein the component is blasted with the blasting medium.
  • the blasting agent in this method is the blasting agent according to the invention.
  • the blasting agent comprises an AISc alloy, preferably an AlMgSc alloy.
  • the blasting agent comprises particles with a size of preferably 65 ⁇ m or more, more preferably 75 ⁇ m or more, even more preferably at least 80 ⁇ m, for example with a particle size x of 45 ⁇ m ⁇ x ⁇ 200 ⁇ m, preferably 65 ⁇ m ⁇ x ⁇ 200 ⁇ m, more preferably 75 ⁇ m ⁇ x ⁇ 200 ⁇ m, even more preferably 80 ⁇ m ⁇ x ⁇ 200 ⁇ m, and particularly preferably it consists of these.
  • Corresponding particles can in turn be obtained, for example, by means of a sieve analysis with sieves with mesh sizes of 45 ⁇ m, 65 ⁇ m, 75 ⁇ m, 80 ⁇ m and 200 ⁇ m, depending on the desired fraction.
  • the Sc content in the steel shot is at least 0.5% by weight, based on the shot.
  • the blasting agent was heated by a heat treatment at a temperature of 250°C - 400°C, preferably 275°C - 350°C, more preferably 300 - 325°C, e.g. 325°C, and/or in a period of 15 - 6000 min, preferably 60 to 240 min, more preferably 90 to 150 min, eg 120 min.
  • the blasting agent has a hardness of >150 HB.
  • the component was produced by a powder melting process or a powder sintering process, preferably by a laser powder bed melting process.
  • the component consists of a material of the same type and/or similar to the blasting agent.
  • the component preferably consists of the same material as the blasting medium.
  • an AlSc alloy is atomized from a melt and a particle fraction is screened out of the particles produced in this way, with particles having a size of 45 ⁇ m being screened out of the particles produced as blasting agent.
  • particles with a size of preferably 65 ⁇ m or more, more preferably 75 ⁇ m or more, even more preferably at least 80 ⁇ m for example with a particle size x of 45 ⁇ m ⁇ x ⁇ 200 ⁇ m, preferably 65 ⁇ m ⁇ x ⁇ 200 ⁇ m, more preferably 75 ⁇ m ⁇ x ⁇ 200 ⁇ m, even more preferably 80 ⁇ m ⁇ x ⁇ 200 ⁇ m, screened out from the particles produced as blasting agent.
  • Corresponding particles can be obtained, for example, by sieving with sieves with mesh sizes of 45 ⁇ m, 65 ⁇ m, 75 ⁇ m, 80 ⁇ m and 200 ⁇ m, depending on the desired fraction.
  • the sieved particles are at a temperature of 250 ° C - 400 ° C, preferably 275 ° C - 350 ° C, more preferably 300 - 325 ° C, for example 325 ° C, and / or in a period of 15 - 6000 min, preferably 60 to 240 min, more preferably 90 to 150 min, for example 120 min, cured.
  • the particles screened out are preferably treated by heat treatment at a temperature of 250° C.-400° C., preferably 275° C.-350° C., more preferably 300-325° C., eg 325° C., for a period of 15-6000 minutes , preferably 60 to 240 min, more preferably 90 to 150 min, for example 120 min, cured.
  • the particles for the production of the component can be screened out from the remaining particles, for example as indicated above.
  • One advantage of this method according to the invention is that after the component has been blasted, the blasting agent can again be separated off by sieving and can therefore be reused, for example in a new blasting process or blasting method.
  • the present invention relates to a method for producing a blasted component, the component comprising Al and/or Mg, in particular an Al and/or Mg alloy, the component being produced by a powder melting process or a powder -Sintering process is produced and is blasted with the blasting agent according to the invention.
  • the component is not particularly limited here, provided it includes Al and/or Mg, in particular Al, and can have any shape and configuration.
  • at least one surface of the component to be blasted comprises Al and/or Mg, in particular an Al and/or Mg alloy, for example an alloy comprising Al and Mg.
  • the component consists essentially of an Al and/or Mg or Mg alloy or consists of the Al and/or Mg alloy.
  • the Al and/or Mg alloy is not particularly restricted here and can, for example, be an alloy of Al with a suitable material, ie for example a 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx or 8xxx alloy.
  • the component comprises Sc, in particular in an amount of 0.3% by weight or more, preferably 0.5% by weight or more, for example 0.5 - 3 wt% Sc, for example 0.7 - 0.8 wt% Sc.
  • the component comprises an AlSc alloy, in particular an AlMgSc alloy, and the component preferably consists of an AISc alloy, in particular an AlMgSc alloy, in particular with an Sc content of 0.3% by weight or more. preferably 0.5% by weight or more, for example 0.5-3% by weight, for example 0.7-0.8% by weight.
  • the component in particular in addition to Sc, can also include other alloying components, which are not particularly restricted.
  • the component includes Zr and/or Mn.
  • the component comprises an AlSc alloy, in particular an AlMgSc alloy, which comprises Zr and/or Mn, in particular Zr, and consists in particular of such an alloy.
  • the ratio of Zr to Sc is in particular in a range from 1:10 to 2:1, preferably 1:7 to 1:1, more preferably 1:5 to 1:2.
  • the component is produced by a powder melting process or a powder sintering process, preferably by a laser powder bed melting process.
  • the powder melting method and the powder sintering method are not particularly limited, and examples of such methods include selective laser sintering, electron beam melting or selective laser melting, which methods are not particularly limited.
  • the device is manufactured by Laser Powder Bed Melting (LBP-S), such as that used for 3D printing. In this case, the method itself is again not particularly limited.
  • the production takes place with powders having a particle size of 20 to 75 ⁇ m, preferably 20 to 65 ⁇ m, more preferably 20 to 45 ⁇ m.
  • Corresponding powder fractions can be analyzed with a sieve analysis are obtained with appropriate sieves with mesh sizes of 20 ⁇ m, 45 ⁇ m, 65 ⁇ m and 75 ⁇ m, depending on the desired fraction.
  • the powder for the abrasive is produced by the same process as the material for the production of the component.
  • the powder for the blasting agent and the powder for producing the component are produced in the same process, in particular in the same process step, e.g. a powder production campaign, so that, for example, both powders from the production campaign can be separated from one another, for example by screening.
  • particles of the powder produced are used for the production of the blasting medium, which are not used for the production of the component, for example due to the particle size.
  • the particles for producing the blasting agent are larger than the particles for producing the component.
  • a component is described and not according to the invention, the component comprising Al and/or Mg, in particular an Al and/or Mg alloy, the component being produced by a powder melting process or a powder sintering process and with the blasting agent according to the invention is blasted.
  • the component is again not particularly limited, provided it comprises Al and/or Mg, in particular Al, and can have any shape and configuration.
  • at least one surface of the component to be blasted comprises Al and/or Mg, in particular an Al and/or Mg alloy, for example an alloy comprising Al and Mg.
  • the component consists essentially of an Al and/or Mg alloy or consists of the Al and/or Mg alloy.
  • the Al and / or Mg alloy is not particularly limited and can, for example an alloy of Al with a suitable material, for example a 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx or 8xxx alloy.
  • the component comprises Sc, in particular in an amount of 0.3% by weight or more, preferably 0.5% by weight or more, for example 0.5-3% by weight Sc, for example 0.7-0. 8 wt% Sc.
  • the component comprises an AlSc alloy, in particular an AlMgSc alloy, and the component preferably consists of an AISc alloy, in particular an AlMgSc alloy, in particular with an Sc content of 0.3% by weight or more. preferably 0.5% by weight or more, for example 0.5-3% by weight, for example 0.7-0.8% by weight.
  • the component in particular in addition to Sc, can also include other alloying components, which are not particularly restricted.
  • the component includes Zr and/or Mn.
  • the component comprises an AlSc alloy, in particular an AlMgSc alloy, which comprises Zr and/or Mn, in particular Zr, and consists in particular of such an alloy.
  • the ratio of Zr to Sc is in particular in a range from 1:10 to 2:1, preferably 1:7 to 1:1, more preferably 1:5 to 1:2.
  • the component is produced by a powder melting process or a powder sintering process, preferably by a laser powder bed melting process.
  • the powder melting method and the powder sintering method are not particularly limited, and examples of such methods include selective laser sintering, electron beam melting or selective laser melting, which methods are not particularly limited.
  • the component is manufactured by laser powder bed melting (LBP-S), such as that shown in FIG used for 3D printing. In this case, the method itself is again not particularly limited.
  • the production takes place with powders having a particle size of 20 to 75 ⁇ m, preferably 20 to 65 ⁇ m, more preferably 20 to 45 ⁇ m.
  • Corresponding powder fractions can be obtained with a sieve analysis using appropriate sieves with mesh sizes of 20 ⁇ m, 45 ⁇ m, 65 ⁇ m and 75 ⁇ m, depending on the desired fraction.
  • the powder for the abrasive is produced by the same process as the material for the production of the component.
  • the powder for the blasting agent and the powder for producing the component are produced in the same process, in particular in the same process step, e.g. a powder production campaign, so that, for example, both powders from the production campaign can be separated from one another, for example by screening.
  • particles of the powder produced are used for the production of the blasting medium, which are not used for the production of the component, for example due to the particle size.
  • the particles for producing the blasting agent are larger than the particles for producing the component.
  • FIG. 1 shows a schematic sequence of how an exemplary component and an exemplary blasting agent can be produced in a method and how the component can be blasted with the blasting agent.
  • a melt comprising Al, Mg and Sc is produced in a first step 1 .
  • An example of such a melt is a melt of AlMg 4.5 SC 0.75 Zr 0.3 , which can be produced at a temperature of approx. 800° C., for example.
  • the melt comprising Al, Mg and Sc for example the AlMg 4.5 Sc 0.75 Zr 0.3 melt, is then atomized, which is not particularly restricted. This results in a powder of the alloy, which is referred to below as AlMgSc powder.
  • the AlMgSc powder produced is separated and screened out.
  • a component can then be produced in step 4 using a first powder fraction and a further powder fraction can be provided for the production of a blasting agent.
  • a fraction with a particle size of less than 20 ⁇ m can be separated from the AlMgSc powder, which fraction can be fed back to step 1, for example, since the particles of the fraction can be too small for the production of a component.
  • a further fraction can, for example, have a particle size in a range from 20 to ⁇ 65 ⁇ m, which is used to produce a component by means of a laser powder bed melting process (which is not particularly restricted).
  • a further, third fraction of the powder with a particle size of, for example, 65 ⁇ m and more, for example 75 ⁇ m-200 ⁇ m, can then be used to produce a blasting medium.
  • this additional, third powder fraction is then hardened to produce the blasting agent, for example at a temperature of 325°C for a period of 120 minutes. This makes the blasting agent harder than the component, making it well suited for abrasive cleaning blasting.
  • step 6 the component produced in step 4 is blasted with the blasting agent produced in step 5, for example for a cleaning and/or smoothing blasting and/or shot peening of the component manufactured using the laser powder bed melting process.
  • This production step 6 can be followed by an optional step 7 in which the blasting agent is reused or is used again, for example by being separated again by sieving after blasting.

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Chemical & Material Sciences (AREA)
  • Materials Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Manufacturing & Machinery (AREA)
  • Physics & Mathematics (AREA)
  • Optics & Photonics (AREA)
  • Powder Metallurgy (AREA)

Claims (14)

  1. Agent de sablage pour le sablage d'une pièce, la pièce comprenant de l'Al et/ou du Mg, en particulier un alliage d'Al et/ou de Mg, l'agent de sablage comprenant un alliage AlSc, caractérisé en ce que l'agent de sablage comprend des particules de l'alliage AlSc ayant une granulométrie de 45 µm ou plus.
  2. Agent de sablage selon la revendication 1, l'agent de sablage comprenant un alliage AlMgSc.
  3. Agent de sablage selon la revendication 1 ou 2, l'agent de sablage comprenant des particules de l'alliage AlSc ayant une granulométrie de 65 µm ou plus, de préférence d'au moins 80 µm, et d'une manière particulièrement préférée en en étant constitué.
  4. Agent de sablage selon l'une des revendications 1 à 3, la teneur en Sc de l'agent de sablage étant d'au moins 0,5 % en poids par rapport à l'agent de sablage.
  5. Agent de sablage selon l'une des revendications précédentes, l'agent de sablage ayant été durci par un traitement thermique à une température de 250 °C à 400 °C et/ou pendant une durée de 15 à 6 000 min, et/ou présente une dureté > 150 HB.
  6. Procédé de sablage d'une pièce, caractérisé en ce que la pièce contient de l'Al et/ou du Mg, en particulier un alliage d'Al et/ou de Mg, l'agent de sablage comprenant un alliage AlSc, l'agent de sablage comprenant des particules de l'alliage AlSc ayant une granulométrie de 45 µm ou plus, la pièce étant sablée à l'aide de l'agent de sablage.
  7. Procédé selon la revendication 6, dans lequel l'agent de sablage comprend un alliage AlMgSc.
  8. Procédé selon la revendication 6 ou 7, l'agent de sablage comprenant des particules de l'alliage AlSc ayant une granulométrie de 65 µm ou plus, de préférence d'au moins 80 µm, et d'une manière particulièrement préférée en en étant constitué.
  9. Procédé selon l'une des revendications 6 à 8, dans lequel la teneur de l'agent de sablage en Sc est d'au moins 0,5 % en poids par rapport à l'agent de sablage.
  10. Procédé selon l'une des revendications 6 à 9, dans lequel l'agent de sablage a été durci par un traitement thermique à une température de 250 °C à 400 °C et/ou pendant une durée de 15 à 6 000 min et/ou présente une dureté > 150 HB.
  11. Procédé selon l'une des revendications 6 à 10, dans lequel la pièce a été fabriquée par un procédé de fusion de poudre ou par un procédé de frittage de poudre, de préférence par un procédé de fusion laser en lit de poudre, plus préférentiellement dans lequel la pièce est constituée d'un matériau de même type que l'agent de sablage, d'une manière particulièrement préférée dans lequel la pièce est constituée du même matériau que l'agent de sablage.
  12. Procédé de fabrication d'un agent de sablage, caractérisé en ce que l'alliage AlSc est pulvérisé à partir d'une masse fondue, et une fraction de particules est séparée par tamisage des particules ainsi fabriquées, les particules ayant une granulométrie de 45 µm ou plus étant séparées par tamisage des particules fabriquées, sous forme d'agent de sablage.
  13. Procédé selon la revendication 12, dans lequel les particules ayant une granulométrie de 65 µm ou plus, de préférence d'au moins 80 µm, sont séparées par tamisage des particules fabriquées sous forme d'un agent de sablage, de préférence dans lequel les particules séparées par sablage sont durcies à une température de 250 °C à 400 °C et/ou pendant une durée de 15 à 6 000 min.
  14. Procédé de fabrication d'une pièce sablée, caractérisé en ce que la pièce comprend de l'Al et/ou du Mg, en particulier un alliage d'Al et/ou de Mg, la pièce étant fabriquée par un procédé de fusion de poudre ou par un procédé de frittage de poudre, et étant sablée par un agent de sablage selon l'une des revendications 1 à 5.
EP19165209.8A 2018-03-27 2019-03-26 Produit de grenaillage comprenant une alliage d'aluminium et scandium destinée au grenaillage de nettoyage d'un produit à base d'aluminium et/ou de magnésium Active EP3546125B1 (fr)

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DE102018204593.3A DE102018204593A1 (de) 2018-03-27 2018-03-27 Al-& Mg- verträgliches Strahlgut zum Reinigungsstrahlen derselben auf Basis von AlSc-Pulver

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EP3546125B1 true EP3546125B1 (fr) 2022-06-22

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US20220134666A1 (en) * 2020-11-05 2022-05-05 Arcam Ab Blast nozzles for additive manufacturing and methods for using the same

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DE102018204593A1 (de) 2019-10-02
CN110306081A (zh) 2019-10-08
EP3546125A1 (fr) 2019-10-02

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