DE102018204593A1 - Al- & Mg-compatible blasting material for cleaning blasting on the basis of AlSc powder - Google Patents

Abstract

The present invention relates to a blasting medium for blasting a component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, a method for blasting a component, wherein the component Al and / or Mg, in particular an Al and / or Mg alloy, and a method for producing a blasting agent.

Description

The present invention relates to a blasting medium for blasting a component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, a method for blasting a component, wherein the component Al and / or Mg, in particular an Al and / or Mg alloy, and a method for producing a blasting agent.

Particularly in the case of components which contain aluminum or magnesium, for example Al and / or Mg alloys, and which have been produced in particular by means of a powder melting method or a powder sintering method, powder residues adhering to the machine after production should be removed, which in A further processing may be disadvantageous, for example, due to the roughness thus generated.

Usually surfaces of such components are cleaned by sandblasting or blasting with corundum. As an alternative, ceramic-based materials or gravel for blasting may also be used, as well as, for example, materials based on iron alloys, such as in the US2016375549 described.

The corresponding blasting agents, however, differ in the case of components which contain aluminum or magnesium, in particular Al, from the material of the component and can lead to contamination if, for example, blasting agents get stuck in the surface and / or wear off the surfaces of the Al or Mg components Chemically contaminated with foreign alloy material, which can lead to corrosion problems or strength problems. This is especially the case when high strength alloys such as AlMgSc alloys, for example Scalmalloy® alloys, are blasted. Therefore, this may be followed by another pickling step to remove this blasting material. However, a corresponding step is associated with additional effort.

Against this background, the object of the present invention is to provide an improved method for blasting a component containing Al and / or Mg, as well as a blasting material which can be used in such a method.

According to the invention, this object is achieved by a blasting medium having the features of patent claim 1, by a method having the features of patent claim 6, by a method having the features of patent claim 12, by a method having the features of patent claim 14, and by a component comprising Features of claim 15.

The idea on which the present invention is based is that the component comprising Al and / or Mg is blasted with a blasting medium which comprises an Al alloy and / or Mg alloy, that is to say that the blasting agent is identical or at least similar to the material of the component, whereby contamination can be reduced or even avoided.

Advantageous embodiments and further developments will become apparent from the other dependent claims and from the description with reference to the figures.

definitions

Unless defined otherwise, technical and scientific terms used herein have the same meaning as commonly understood by one of ordinary skill in the art.

Quantities in the context of the present invention relate to wt.%, Unless otherwise specified or apparent from the context. In the blasting agent according to the invention, the weight percentages to 100% by weight complement each other, so not apparent from the context otherwise.

In the context of the invention, a blasting agent, also referred to as blasting, an excipient that can be used in blasting. It comprises a plurality of particles, which usually all consist essentially of the same material. The shape of the particles of the abrasive is in the context of the invention, as in terms of the blasting agent according to the invention as well as the inventive method, not particularly limited, and the particles may be round, angular and / or edged and are, for example, angular and angular. In the method according to the invention, the blasting agent usually has a higher hardness than the component to be blasted, in particular so that it can also perform its function. In particular, the blasting agent according to the invention consists of one or more alloys, in particular an alloy, ie in particular does not comprise any ceramic components. The blasting agent is used in particular for cleaning and / or surface smoothing, so it is a cleaning and / or Oberflächenglättungs-blasting agent. In particular, according to certain embodiments, the blasting agent according to the invention behaves chemically inert to the material of the component to be irradiated, ie does not damage the component, for example by corrosion.

In a first aspect, the present invention relates to a blasting medium for blasting a component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the blasting agent comprises an Al and / or Mg alloy ,

The component is not particularly limited here, as long as it comprises Al and / or Mg, in particular Al, and may have any shape and configuration. According to certain embodiments, at least one surface of the component to be irradiated comprises Al and / or Mg, in particular an Al and / or Mg alloy, for example an alloy comprising Al and Mg. According to certain embodiments, the component essentially consists of an Al and / or or Mg alloy or consists of the Al and / or Mg alloy. The Al and / or Mg alloy is not particularly limited in this case and may for example be an alloy of Al with a suitable material, so for example a 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx or 8xxx alloy.

According to certain embodiments, the component Sc comprises, 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% by weight Sc. According to certain embodiments, the component comprises an AISc alloy, in particular an AlMgSc alloy, and preferably the component 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.

In addition to Al and / or Mg, the component, in particular in addition to Sc, may also comprise further alloy constituents, which are not particularly limited. According to certain embodiments, the component Zr and / or Mn comprises. According to certain embodiments, the component comprises an AISc 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 here is in particular in a range of 1:10 to 2: 1, preferably 1: 7 to 1: 1, more preferably 1: 5 to 1: 2. Also, of course, according to certain embodiments, unavoidable impurities may be included.

According to certain embodiments, the component is produced by a powder or powder sintering process, preferably by a laser powder bed fusion 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. In particular, the component is produced by laser powder bed melting (LBP-S), such as is used for 3D printing. Again, the method itself is not particularly limited. In particular, the preparation is carried out with powders having a particle size of from 20 to 75 μm, preferably from 20 to 65 μm, more preferably from 20 to 45 μm. Corresponding powder fractions can be obtained in accordance with a sieve analysis with corresponding sieves with mesh sizes of 20 microns, 45 microns, 65 microns, and 75 microns, corresponding to the desired fraction.

Also, the blasting agent is not particularly limited as far as it comprises an Al and / or Mg alloy.

A powder for the production of the blasting agent can be prepared by conventional methods for producing powders for powder metallurgy and / or for powder melting or powder sintering, preferably not limited to laser powder bed fusion. For example, the powder for the production of the blasting agent can be produced by atomizing a molten metal or a melt of a metal alloy and separating off a suitable particle fraction. According to certain embodiments, the powder for the blasting agent is produced by the same method as the material for the production of the component. According to certain embodiments, the powder for the blasting agent and the powder for the production of the component in the same process, in particular in the same process step, e.g. a powder manufacturing campaign, prepared so that, for example, both powders from the manufacturing campaign can be separated from each other, for example by screening. In particular, particles of the powder produced are used for the production of the blasting agent, which are not used for the production of the component, for example, due to the particle size. In particular, the particles for producing the blasting agent are larger than the particles for producing the component.

According to certain embodiments, the abrasive 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% by weight Sc. According to certain embodiments, the blasting agent comprises an AISc 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 advantage of using such an alloy is, in particular, that it can chemically behave substantially like pure aluminum.

In addition to Al and / or Mg, the blasting agent, in particular in addition to Sc, may also comprise further alloy constituents, which are not particularly limited. According to certain embodiments, the blasting agent Zr and / or Mn. According to certain embodiments, the blasting agent comprises an AISc 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 here is in particular in a range of 1:10 to 2: 1, preferably 1: 7 to 1: 1, more preferably 1: 5 to 1: 2. Also, of course, according to certain embodiments, unavoidable impurities may be included.

According to certain embodiments, the blasting agent comprises particles of the Al and / or Mg alloy having a size of 45 μm or more, preferably 65 μm or more, more preferably 75 μm or more, even more preferably at least 80 μm, for example with a particle size x of 45 μm ≤ x ≤ 200 μm, preferably 65 μm ≤ x ≤ 200 μm, more preferably 75 μm ≤ x ≤ 200 μm, even more preferably 80 μm ≤ x ≤ 200 μm, and particularly preferably it consists of these. Corresponding particles can in turn be obtained, for example, by sieve analysis with sieves with mesh sizes of 45 μm, 65 μm, 75 μm, 80 μm, and 200 μm, corresponding to the desired fraction. If the particles of the blasting medium are too small, they produce too little effect when blasting. If the particles are too large, they are harder to accelerate sufficiently to blast to develop a suitable effect.

In certain embodiments, the blasting agent has been heat treated 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 60-240 min, more preferably 90-150 min, e.g. 120 min, hardened. As a result, the blasting agent can be further solidified compared to untreated particles. In particular, if the blasting agent comprises Al and Sc, preferably Al, Mg and Sc, a precipitation hardening of the Sc can take place here, so that a coherent Al3Sc phase can form. In addition, if Zr is included, an Al3ScZr phase may form, which may further contribute to the hardness of the abrasive. Preferably, the blasting agent was obtained 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, in a period of 15-6,000 minutes, preferably 60-240 minutes, more preferably 90-150 minutes, e.g. 120 min, hardened. In this case, the shorter the time duration, the higher the temperature of the heat treatment.

According to certain embodiments, 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, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the blasting agent comprises an Al and / or Mg alloy, wherein the component is blasted with the blasting medium. According to certain embodiments, the blasting agent in this process is in particular the blasting agent according to the invention.

According to certain embodiments, the blasting agent comprises an AISc alloy, preferably an AlMgSc alloy.

According to certain embodiments, the blasting agent comprises particles of the Al and / or Mg alloy having a thickness of 45 μm or more, preferably 65 μm or more, more preferably 75 μm or more, even more preferably at least 80 μm, for example with a particle size x of 45 μm ≤ x ≤ 200 μm, preferably 65 μm ≤ x ≤ 200 μm, more preferably 75 μm ≤ x ≤ 200 μm, even more preferably 80 μm ≤ x ≤ 200 μm, and particularly preferably it consists of these. Corresponding particles can in turn be obtained, for example, by sieve analysis with sieves with mesh sizes of 45 μm, 65 μm, 75 μm, 80 μm, and 200 μm, corresponding to the desired fraction.

According to certain embodiments, a content of Sc in the steel agent is at least 0.5% by weight, based on the blasting agent.

In certain embodiments, the blasting agent has been heat treated 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 60-240 min, more preferably 90-150 min, e.g. 120 min, hardened. According to certain embodiments, the blasting agent has a hardness of> 150 HB.

In certain embodiments, the device has been manufactured by a powder or powder sintering process, preferably a laser powder bed melt process.

According to certain embodiments, the component consists of a similar and / or similar material as the blasting agent. The component preferably consists of the same material as the blasting medium.

According to certain embodiments, an Al and / or Mg alloy is sputtered from a melt and a particulate fraction is sifted out of the particles thus produced.

According to certain embodiments, particles having a size of 45 μm or more, preferably 65 μm or more, more preferably 75 μm or more, even more preferably at least 80 μm, for example having a particle size x of 45 μm ≤ x ≤ 200 μm, preferably 65 μm ≤ x ≤ 200 μm, more preferably 75 μm ≤ x ≤ 200 μm, even more preferably 80 μm ≤ x ≤ 200 μm, screened from the particles produced as abrasive. Corresponding particles can be obtained, for example, by sieving with sieves with mesh sizes of 45 μm, 65 μm, 75 μm, 80 μm, and 200 μm, corresponding to the desired fraction.

According to certain embodiments, the sieved particles are heated 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 60-240 min, more preferably 90-150 min, e.g. 120 min, hardened. Preferably, the sieved particles are 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, in a period of 15-6,000 minutes, preferably 60-240 minutes, more preferably 90-150 minutes, e.g. 120 min, hardened.

From the remaining particles, according to certain embodiments, the particles for producing the component, for example as stated above, are screened out.

An advantage of this method according to the invention is that the blasting agent can in turn be separated by sieving after blasting of the component and can thus be reused, for example in the case of a renewed blasting process or blasting process.

In a still further aspect, the present invention relates to a method for producing a blasted component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the component by a powder melting method or a powder Sintering process is prepared and blasted with the blasting agent according to the invention.

The component is not particularly limited here, as long as it comprises Al and / or Mg, in particular Al, and may have any shape and configuration. According to certain embodiments, at least one surface of the component to be irradiated comprises Al and / or Mg, in particular an Al and / or Mg alloy, for example an alloy comprising Al and Mg. According to certain embodiments, the component essentially consists of an Al and / or or Mg alloy or consists of the Al and / or Mg alloy. The Al and / or Mg alloy is not particularly limited in this case and may for example be an alloy of Al with a suitable material, so for example a 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx or 8xxx alloy.

According to certain embodiments, the component Sc comprises, 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% by weight Sc. According to certain embodiments, the component comprises an AISc alloy, in particular an AlMgSc alloy, and preferably the component 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.

In addition to Al and / or Mg, the component, in particular in addition to Sc, may also comprise further alloy constituents, which are not particularly limited. According to certain embodiments, the component Zr and / or Mn comprises. According to certain embodiments, the component comprises an AISc 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 here is in particular in a range of 1:10 to 2: 1, preferably 1: 7 to 1: 1, more preferably 1: 5 to 1: 2.

The component is manufactured by a powder-melting method or a powder-sintering method, preferably by a laser powder-bed-melting method. 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. In particular, the component is produced by laser powder bed melting (LBP-S), such as is used for 3D printing. Again, the method itself is not particularly limited. In particular, the preparation is carried out with powders having a particle size of 20 to 75 .mu.m, preferably 20 to 65 .mu.m, more preferably 20 up to 45 μm. Corresponding powder fractions can be obtained in accordance with a sieve analysis with corresponding sieves with mesh sizes of 20 microns, 45 microns, 65 microns, and 75 microns, corresponding to the desired fraction.

According to certain embodiments, the powder for the blasting agent is produced by the same method as the material for the production of the component. According to certain embodiments, the powder for the blasting agent and the powder for the production of the component in the same process, in particular in the same process step, e.g. a powder manufacturing campaign, prepared so that, for example, both powders from the manufacturing campaign can be separated from each other, for example by screening. In particular, particles of the powder produced are used for the production of the blasting agent, which are not used for the production of the component, for example, due to the particle size. In particular, the particles for producing the blasting agent are larger than the particles for producing the component.

In addition, a component is disclosed, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the component is produced by a powder melting process or a powder sintering process and blasted with the blasting agent according to the invention ,

Again, the component is not particularly limited insofar as it comprises Al and / or Mg, in particular Al, and may have any shape and configuration. According to certain embodiments, at least one surface of the component to be irradiated comprises Al and / or Mg, in particular an Al and / or Mg alloy, for example an alloy comprising Al and Mg. According to certain embodiments, the component essentially consists of an Al and / or or Mg alloy or consists of the Al and / or Mg alloy. The Al and / or Mg alloy is not particularly limited in this case and may for example be an alloy of Al with a suitable material, so for example a 1xxx, 2xxx, 3xxx, 4xxx, 5xxx, 6xxx, 7xxx or 8xxx alloy.

According to certain embodiments, the component Sc comprises, 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% by weight Sc. According to certain embodiments, the component comprises an AISc alloy, in particular an AlMgSc alloy, and preferably the component 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.

In addition to Al and / or Mg, the component, in particular in addition to Sc, may also comprise further alloy constituents, which are not particularly limited. According to certain embodiments, the component Zr and / or Mn comprises. According to certain embodiments, 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 here is in particular in a range of 1:10 to 2: 1, preferably 1: 7 to 1: 1, more preferably 1: 5 to 1: 2.

The component is manufactured by a powder-melting method or a powder-sintering method, preferably by a laser powder-bed-melting method. 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. In particular, the component is produced by laser powder bed melting (LBP-S), such as is used for 3D printing. Again, the method itself is not particularly limited. In particular, the preparation is carried out with powders having a particle size of from 20 to 75 μm, preferably from 20 to 65 μm, more preferably from 20 to 45 μm. Corresponding powder fractions can be obtained in accordance with a sieve analysis with corresponding sieves with mesh sizes of 20 microns, 45 microns, 65 microns, and 75 microns, corresponding to the desired fraction.

According to certain embodiments, the powder for the blasting agent is produced by the same method as the material for the production of the component. According to certain embodiments, the powder for the blasting agent and the powder for the production of the component in the same process, in particular in the same process step, e.g. a powder manufacturing campaign, prepared so that, for example, both powders from the manufacturing campaign can be separated from each other, for example by screening. In particular, particles of the powder produced are used for the production of the blasting agent, which are not used for the production of the component, for example, due to the particle size. In particular, the particles for producing the blasting agent are larger than the particles for producing the component.

The above embodiments and developments can, if appropriate, combine with each other as desired. Other possible Embodiments, developments and implementations of the invention also include not explicitly mentioned combinations of features of the invention described above or below with regard to the exemplary embodiments. In particular, the person skilled in the art will also add individual aspects as improvements or additions to the respective basic form of the present invention.

• 1 schematisch ein Verfahren zur Herstellung eines Bauteils, wobei das Bauteil mit dem erfindungsgemäßen Strahlmittel gestrahlt wird.

The present invention will be explained in more detail with reference to the exemplary embodiments given in the schematic figures. It shows:

• 1 schematically a method for producing a component, wherein the component is blasted with the blasting agent according to the invention.

The accompanying figures are intended to convey a further understanding of the embodiments of the invention. They illustrate embodiments and, together with the description, serve to explain principles and concepts of the invention. Other embodiments and many of the stated advantages will become apparent with reference to the drawings. The elements of the drawings are not necessarily shown to scale to each other.

In the figures of the drawing are the same, functionally identical and same-acting elements, features and components - unless otherwise stated - each provided with the same reference numerals.

1 schematically shows a process, such as in a method, an exemplary component and an exemplary blasting agent can be produced and the component can be blasted with the blasting agent.

In an exemplary manufacturing method of a blasted component according to the invention as well as the production of a blasting material according to the invention is in a first step 1 produced a melt comprising Al, Mg and Sc. An example of such a melt is a melt of AlMg _4.5 Sc ₀ , ₇₅ Zr ₀ , ₃ , which can be prepared for example at a temperature of about 800 ° C. In a step then atomizing the melt comprising Al, Mg and Sc, so for example, the AIM will _g4,5 Sc _0.75 Zr _0.3 smelting of, instead, which is not particularly limited. This results in a powder of the alloy, which is referred to below as AlMgSc powder. In a subsequent step 3 a separation and sifting of the produced AlMgSc powder takes place. From the separated powder fractions can then in step 4 a production of a component using a first powder fraction and providing a further powder fraction for the production of a blasting agent take place. For example, from the AlMgSc powder, a fraction with a particle size of less than 20 microns can be separated, which in turn, the step 1 can be supplied because the particles of the fraction can be too small for the production of a component. For example, another fraction may have a particle size in a range of 20 to <65 μm, which is used for producing a component by means of a laser powder bed melting method (which is not particularly limited). A further, third fraction of the powder having a particle size of, for example, 65 μm and more, for example 75 μm-200 μm, can then be used to produce a blasting medium. In step 5 Then, this further, third powder fraction is cured to produce the blasting agent, for example at a temperature of 325 ° C for a period of 120 min. As a result, the blasting agent harder than the component, so it is well suited for abrasive cleaning blasting. In step 6 there is a blasting of in step 4 manufactured component with the in step 5 produced blasting agent, for example, for a cleaning and / or smoothing blasting and / or a solidification blasting of the component produced by the laser powder bed fusion process. At this manufacturing step 6 may be an optional step 7 connect, in which the blasting agent is reused or reused, for example by it is separated again after screening by sieving.

LIST OF REFERENCE NUMBERS

1

Preparation of a melt comprising Al, Mg and Sc

2

Atomizing the melt comprising Al, Mg and Sc

3

Separate and sift the generated AlMgSc powder

4

Production of a component using a powder fraction and provision of a further powder fraction for producing a blasting medium

5

Hardening of the further powder fraction for the preparation of the blasting agent

6

Blasting of the component with the abrasive

7

If necessary, reuse of the abrasive

QUOTES INCLUDE IN THE DESCRIPTION

This list of the documents listed by the applicant has been generated automatically and is included solely for the better information of the reader. The list is not part of the German patent or utility model application. The DPMA assumes no liability for any errors or omissions.

Cited patent literature

• US 2016375549 [0003]

Cited non-patent literature

• EN ISO 6506 [0023]
• EN ISO 6506-1 [0023]
• EN ISO 6506-4 [0023]

Claims (15)

Blasting agent for blasting a component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the blasting agent comprises an Al and / or Mg alloy. Blasting agent after Claim 1 wherein the blasting agent comprises an AlSc alloy, preferably an AlMgSc alloy. Blasting agent after Claim 1 or 2 wherein the blasting agent comprises particles of the Al and / or Mg alloy having a size of 45 μm or more, preferably 65 μm or more, more preferably at least 80 μm, and especially preferably consists of these. Blasting agent according to one of Claims 1 to 3 wherein a content of Sc in the steel agent is at least 0.5% by weight based on the blasting agent. Blasting agent according to one of the preceding claims, wherein the blasting agent has been cured by a heat treatment at a temperature of 250 ° C - 400 ° C and / or in a period of 15 - 6000 min and / or has a hardness of> 150 HB. A method of blasting a component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the blasting agent comprises an Al and / or Mg alloy, wherein the component is blasted with the blasting medium , Method according to Claim 6 wherein the blasting agent comprises an AlSc alloy, preferably an AlMgSc alloy. Method according to Claim 6 or 7 wherein the blasting agent comprises particles of the Al and / or Mg alloy having a size of 45 μm or more, preferably 65 μm or more, more preferably at least 80 μm, and particularly preferably consists of these. Method according to one of Claims 6 to 8th wherein a content of Sc in the steel agent is at least 0.5% by weight based on the blasting agent. Method according to one of Claims 6 to 9 , wherein the blasting agent has been cured by a heat treatment at a temperature of 250 ° C - 400 ° C and / or in a period of 15 - 6000 min and / or has a hardness of> 150 HB. Method according to one of Claims 6 to 10 in which the component has been produced by a powder melting method or a powder sintering method, preferably by a laser powder bed melting method, more preferably wherein the component consists of a similar material as the blasting medium, particularly preferably wherein the component is made of the same material how the abrasive is made. A method for producing a blasting medium, wherein an Al and / or Mg alloy is sputtered from a melt, and from the particles thus produced a particle fraction is screened. Method according to Claim 12 in which particles having a size of 45 μm or more, preferably 65 μm or more, more preferably at least 80 μm, are screened out of the particles produced as blasting medium, preferably wherein the screened particles are at a temperature of 250 ° C.-400 ° C. and / or or cured in a period of 15-6000 minutes. A method for producing a blasted component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the component is produced by a powder-melting process or a powder sintering process and with a blasting agent after a of the Claims 1 to 5 is blasted. Component, wherein the component comprises Al and / or Mg, in particular an Al and / or Mg alloy, wherein the component is produced by a powder-melting process or a powder-sintering process and with a blasting medium according to one of Claims 1 to 5 is blasted.

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