CN109530707A - A kind of chromiumcopper powder and preparation method thereof for selective laser fusing forming - Google Patents
A kind of chromiumcopper powder and preparation method thereof for selective laser fusing forming Download PDFInfo
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- CN109530707A CN109530707A CN201811563573.XA CN201811563573A CN109530707A CN 109530707 A CN109530707 A CN 109530707A CN 201811563573 A CN201811563573 A CN 201811563573A CN 109530707 A CN109530707 A CN 109530707A
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- powder
- ball
- chromiumcopper
- selective laser
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Classifications
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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
- B22F9/00—Making metallic powder or suspensions thereof
- B22F9/02—Making metallic powder or suspensions thereof using physical processes
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B33—ADDITIVE MANUFACTURING TECHNOLOGY
- B33Y—ADDITIVE MANUFACTURING, i.e. MANUFACTURING OF THREE-DIMENSIONAL [3-D] OBJECTS BY ADDITIVE DEPOSITION, ADDITIVE AGGLOMERATION OR ADDITIVE LAYERING, e.g. BY 3-D PRINTING, STEREOLITHOGRAPHY OR SELECTIVE LASER SINTERING
- B33Y70/00—Materials specially adapted for additive manufacturing
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C1/00—Making non-ferrous alloys
- C22C1/04—Making non-ferrous alloys by powder metallurgy
- C22C1/0425—Copper-based alloys
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C27/00—Alloys based on rhenium or a refractory metal not mentioned in groups C22C14/00 or C22C16/00
- C22C27/06—Alloys based on chromium
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22C—ALLOYS
- C22C9/00—Alloys based on copper
-
- 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
- B22F9/04—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling
- B22F2009/043—Making metallic powder or suspensions thereof using physical processes starting from solid material, e.g. by crushing, grinding or milling by ball milling
Abstract
The invention discloses a kind of chromiumcopper powder for selective laser fusing forming, and it consists of the following components in terms of mass percentage: Cr accounts for mass fraction 5%-50%, and Cu is surplus, and the sum of percentage of the above component is 100%；The chromiumcopper powder the preparation method comprises the following steps: firstly, using vacuum gas atomization manufacture fine copper powder, choose particle size range fine copper powder between 10~53um；High-energy ball milling method is recycled to produce Cr powder；Fine copper powder and Cr powder are mixed later and carry out ball milling under vacuum conditions, finally, Cu-Cr alloy powder is dried, after vacuum cooled, sieve powder to get.This method can be with strict control powder diameter, and chromium metal powder can achieve in alloy powder and be uniformly distributed, and forms dense structure and the uniform alloy structure of ingredient.
Description
Technical field
The invention belongs to metal powder material preparation technical fields, and in particular to a kind of to melt forming for selective laser
Chromiumcopper powder further relates to the preparation method of the chromiumcopper powder.
Background technique
CuCr alloy refers to a series of alloys for being added that Cr and other trace alloying elements are formed using Cu as matrix.Because of it
Intensity and hardness with higher after heat treatment, good electrical and thermal conductivity and corrosion resistance, currently, mainly for the preparation of resistance
Welding electrode, contact material, circuit lead frame, electric car and electric trains aerial condutor, the diverter of electric tool are large-scale
The rotor wire of high-speed turbine generator amature, electrician's plug, switch, the requirements such as ring collector for electric motor have high conductivity high-intensitive
Product.CuCr alloy is also used for electric conductivity without in the heat exchange environment of direct relation, for example, conticaster crystallizer liner,
Wear-resistant material is alternatively arranged as to use in bearing, clamp, bolt etc..Solid solubility of the Cr in Cu is very low, at 1080 DEG C or so
There are about 1.28% (w) Cr to be dissolved in Cu, and 600 DEG C or less then almost insoluble, and Cu does not dissolve in Cr, thus CuCr alloy is actually
It is the pseudo-alloy that two-phase is constituted.The powder manufactured with the methods of traditional aerosolization there are bigger element segregation, powder
Constituent content is uneven, the reduced performance of alloy material, so that traditional chromiumcopper powder can not fully meet metal parts
Requirement.
Summary of the invention
The object of the present invention is to provide a kind of chromiumcopper powder for selective laser fusing forming, solve existing copper
The problem of chromium powder end uniformity difference.
It is a further object to provide the preparation methods of above-mentioned chromiumcopper powder.
The technical scheme adopted by the invention is that a kind of chromiumcopper powder for selective laser fusing forming, according to
Mass percent is composed of the following components: Cr accounts for mass fraction 5%-50%, and Cu is surplus, and the sum of the percentage of the above component is
100%.
Another technical solution of the present invention is a kind of chromiumcopper powder for selective laser fusing forming
Preparation method, be specifically implemented according to the following steps:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder temperature 100~
150 DEG C, atmospheric pressure no more than dry 2~5h in the vacuum environment drying box of -0.05MPa, taken out after subsequent vacuum cooled 2h, then
Using 200 mesh~240 mesh sieve sieve powder to get.
The features of the present invention also characterized in that
In step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, sieve take particle size range Cr powder between 10~53um.
When ball milling, ratio of grinding media to material is 1~5:1, and Ball-milling Time is 2h~12h, and revolving speed is 200~400r/min.
In step 3, Ball-milling Time is 2h~4h, and revolving speed is 200~400r/min.
The invention has the advantages that
This method can be with strict control powder diameter, and chromium metal powder can achieve in alloy powder and uniformly divide
Cloth forms dense structure and the uniform alloy structure of ingredient.
Detailed description of the invention
Fig. 1 is the SEM figure of the Cu-Cr alloy powder of the method for the present invention preparation；
Fig. 2 is the SEM figure of the Cu-Cr alloy powder selective laser forming of the method for the present invention preparation；
Fig. 3 is the SEM figure of the Cu-Cr alloy powder power spectrum identification of the method for the present invention preparation；
Fig. 4 is the Cu-Cr alloy powder power spectrum qualification figure of the method for the present invention preparation.
Specific embodiment
The present invention is described in detail With reference to embodiment.
A kind of chromiumcopper powder for selective laser fusing forming, it consists of the following components in terms of mass percentage:
Cu-Cr alloy powder is made of two kinds of elements of Cu and Cr, wherein Cr accounts for mass fraction 5%-50%, and Cu is surplus, the above component
The sum of percentage be 100%.
A kind of preparation method of the chromiumcopper powder for selective laser fusing forming, it is specifically real according to the following steps
It applies:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, to prevent powder pollution or powder meticulous, sieve takes particle size range Cr powder between 10~53um；
Ratio of grinding media to material is 1~5:1, and Ball-milling Time is 2h~12h, and revolving speed is 200~400r/min；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder temperature 100~
150 DEG C, atmospheric pressure no more than dry 2~5h in the vacuum environment drying box of -0.05MPa, taken out after subsequent vacuum cooled 2h, then
Using 200 mesh~240 mesh sieve sieve powder to get；
Ball-milling Time is 2h~4h, and revolving speed is 200~400r/min；
Wherein, in Cu-Cr alloy powder, Cr powder accounts for mass fraction 5-50%, and Cu is surplus, the percentage of the above component
The sum of be 100%.
Embodiment 1
A kind of preparation method of the chromiumcopper powder for selective laser fusing forming, it is specifically real according to the following steps
It applies:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, to prevent powder pollution or powder meticulous, sieve takes particle size range Cr powder between 10~53um；
Ratio of grinding media to material is 1:1, Ball-milling Time 8h, revolving speed 400r/min；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder in temperature 150
DEG C, atmospheric pressure no more than dry 4h in the vacuum environment drying box of -0.05MPa, take out, recycle after subsequent vacuum cooled 2h
200 mesh sieve sieve powder to get；
Ball-milling Time is 2h, revolving speed 200r/min；
Wherein, in Cu-Cr alloy powder, Cr powder accounts for mass fraction 5%, and Cu is surplus, the percentage of the above component it
Be 100%.
Embodiment 2
A kind of preparation method of the chromiumcopper powder for selective laser fusing forming, it is specifically real according to the following steps
It applies:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, to prevent powder pollution or powder meticulous, sieve takes particle size range Cr powder between 10~53um；
Ratio of grinding media to material is 2:1, Ball-milling Time 5h, revolving speed 300r/min；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder in temperature 100
DEG C, atmospheric pressure no more than dry 5h in the vacuum environment drying box of -0.05MPa, take out, recycle after subsequent vacuum cooled 2h
200 mesh sieve sieve powder to get；
Ball-milling Time is 2h, revolving speed 220r/min；
Wherein, in Cu-Cr alloy powder, Cr powder accounts for mass fraction 20%, and Cu is surplus, the percentage of the above component it
Be 100%.
Embodiment 3
A kind of preparation method of the chromiumcopper powder for selective laser fusing forming, it is specifically real according to the following steps
It applies:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, to prevent powder pollution or powder meticulous, sieve takes particle size range Cr powder between 10~53um；
Ratio of grinding media to material is 3:1, Ball-milling Time 4h, revolving speed 200r/min；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder in temperature 150
DEG C, atmospheric pressure no more than dry 3h in the vacuum environment drying box of -0.05MPa, take out, recycle after subsequent vacuum cooled 2h
240 mesh sieve sieve powder to get；
Ball-milling Time is 4h, revolving speed 200r/min；
Wherein, in Cu-Cr alloy powder, Cr powder accounts for mass fraction 50%, and Cu is surplus, the percentage of the above component it
Be 100%.
Embodiment 4
A kind of preparation method of the chromiumcopper powder for selective laser fusing forming, it is specifically real according to the following steps
It applies:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, to prevent powder pollution or powder meticulous, sieve takes particle size range Cr powder between 10~53um；
Ratio of grinding media to material is 4:1, Ball-milling Time 5h, revolving speed 350r/min；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder in temperature 120
DEG C, atmospheric pressure no more than dry 4h in the vacuum environment drying box of -0.05MPa, take out, recycle after subsequent vacuum cooled 2h
240 mesh sieve sieve powder to get；
Ball-milling Time is 3h, revolving speed 300r/min；
Wherein, in Cu-Cr alloy powder, Cr powder accounts for mass fraction 30%, and Cu is surplus, the percentage of the above component it
Be 100%.
Embodiment 5
A kind of preparation method of the chromiumcopper powder for selective laser fusing forming, it is specifically real according to the following steps
It applies:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range pure copper powder between 10~53um
End；
Step 2, Cr powder is produced using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, under vacuum conditions into
Row ball milling, to prevent powder pollution or powder meticulous, sieve takes particle size range Cr powder between 10~53um；
Ratio of grinding media to material is 5:1, Ball-milling Time 12h, revolving speed 400r/min；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr
Alloy powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder in temperature 150
DEG C, atmospheric pressure no more than dry 5h in the vacuum environment drying box of -0.05MPa, take out, recycle after subsequent vacuum cooled 2h
240 mesh sieve sieve powder to get；
Ball-milling Time is 4h, revolving speed 400r/min；
Wherein, in Cu-Cr alloy powder, Cr powder accounts for mass fraction 40%, and Cu is surplus, the percentage of the above component it
Be 100%.
Using the SEM figure of the Cu-Cr alloy powder of the method for the present invention preparation, as shown in Figure 1, the Cu-Cr alloy powder swashs
The tissue topography of light constituency forming, as shown in Fig. 2, as seen from the figure, the alloy powder dense structure；The Cu-Cr alloy powder energy
Qualification figure is composed, as shown in Figures 3 and 4, as seen from the figure, Cu and Cr is contained in powder, and ingredient is uniform.
Claims (5)
1. a kind of chromiumcopper powder for selective laser fusing forming, which is characterized in that according to mass percent by following
Group is grouped as: Cr accounts for mass fraction 5%-50%, and Cu is surplus, and the sum of percentage of the above component is 100%.
2. it is a kind of for selective laser fusing forming chromiumcopper powder preparation method, which is characterized in that specifically according to
Lower step is implemented:
Step 1, fine copper powder is manufactured using vacuum gas atomization, chooses particle size range fine copper powder between 10~53um；
Step 2, Cr powder is produced using high-energy ball milling method；
Step 3, the fine copper powder obtained after step 1 and step 2 and Cr powder are mixed, later by mixed Cu-Cr alloy
Powder is placed in star-like ball mill, carries out ball milling under vacuum conditions, finally, by Cu-Cr alloy powder in temperature 100~150
DEG C, atmospheric pressure taken out after subsequent vacuum cooled 2h no more than dry 2~5h in the vacuum environment drying box of -0.05MPa, then benefit
With 200 mesh~240 mesh sieve sieve powder to get.
3. a kind of preparation method of chromiumcopper powder for selective laser fusing forming according to claim 2,
It is characterized in that, in the step 2, produces Cr powder using high-energy ball milling method, specifically:
The hardened steel ball of the Cr powder of mechanical crushing and diameter 8mm is fitted into star-like ball mill, carries out ball under vacuum conditions
Mill, sieve take particle size range Cr powder between 10~53um.
4. a kind of preparation method of chromiumcopper powder for selective laser fusing forming according to claim 3,
It is characterized in that, when ball milling, ratio of grinding media to material is 1~5:1, and Ball-milling Time is 2h~12h, and revolving speed is 200~400r/min.
5. a kind of preparation method of chromiumcopper powder for selective laser fusing forming according to claim 2,
It is characterized in that, in the step 3, Ball-milling Time is 2h~4h, and revolving speed is 200~400r/min.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563573.XA CN109530707A (en) | 2018-12-20 | 2018-12-20 | A kind of chromiumcopper powder and preparation method thereof for selective laser fusing forming |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201811563573.XA CN109530707A (en) | 2018-12-20 | 2018-12-20 | A kind of chromiumcopper powder and preparation method thereof for selective laser fusing forming |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| CN109530707A true CN109530707A (en) | 2019-03-29 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201811563573.XA Withdrawn CN109530707A (en) | 2018-12-20 | 2018-12-20 | A kind of chromiumcopper powder and preparation method thereof for selective laser fusing forming |
Country Status (1)
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Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822724A (en) * | 2020-09-14 | 2020-10-27 | 陕西斯瑞新材料股份有限公司 | Preparation method of powder-spread type 3D printing CuCr2 alloy |
-
2018
- 2018-12-20 CN CN201811563573.XA patent/CN109530707A/en not_active Withdrawn
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN111822724A (en) * | 2020-09-14 | 2020-10-27 | 陕西斯瑞新材料股份有限公司 | Preparation method of powder-spread type 3D printing CuCr2 alloy |
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Application publication date: 20190329 |