CN116475411B - High-strength high-toughness low-oxygen component and preparation method thereof - Google Patents
High-strength high-toughness low-oxygen component and preparation method thereof Download PDFInfo
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- CN116475411B CN116475411B CN202310533024.2A CN202310533024A CN116475411B CN 116475411 B CN116475411 B CN 116475411B CN 202310533024 A CN202310533024 A CN 202310533024A CN 116475411 B CN116475411 B CN 116475411B
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- 229910052760 oxygen Inorganic materials 0.000 title claims abstract description 32
- 239000001301 oxygen Substances 0.000 title claims abstract description 32
- 238000002360 preparation method Methods 0.000 title claims description 11
- 239000000843 powder Substances 0.000 claims abstract description 105
- 238000005245 sintering Methods 0.000 claims abstract description 30
- 229910052751 metal Inorganic materials 0.000 claims abstract description 27
- 239000002184 metal Substances 0.000 claims abstract description 27
- 239000002861 polymer material Substances 0.000 claims abstract description 22
- 238000002156 mixing Methods 0.000 claims abstract description 19
- 238000010273 cold forging Methods 0.000 claims abstract description 18
- 238000005507 spraying Methods 0.000 claims abstract description 18
- 238000002844 melting Methods 0.000 claims abstract description 16
- 238000007750 plasma spraying Methods 0.000 claims abstract description 16
- 238000000034 method Methods 0.000 claims abstract description 14
- 238000005516 engineering process Methods 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 239000011248 coating agent Substances 0.000 claims abstract description 10
- 238000000576 coating method Methods 0.000 claims abstract description 10
- 230000008018 melting Effects 0.000 claims abstract description 10
- 239000002245 particle Substances 0.000 claims abstract description 8
- 239000010935 stainless steel Substances 0.000 claims description 19
- 229910001220 stainless steel Inorganic materials 0.000 claims description 19
- 239000000758 substrate Substances 0.000 claims description 14
- 229920005989 resin Polymers 0.000 claims description 13
- 239000011347 resin Substances 0.000 claims description 13
- 239000004677 Nylon Substances 0.000 claims description 11
- 229920001778 nylon Polymers 0.000 claims description 11
- 239000011159 matrix material Substances 0.000 claims description 10
- 238000000498 ball milling Methods 0.000 claims description 8
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 claims description 6
- 238000005242 forging Methods 0.000 claims description 5
- 238000000227 grinding Methods 0.000 claims description 5
- 238000010438 heat treatment Methods 0.000 claims description 5
- 238000004519 manufacturing process Methods 0.000 claims description 5
- 238000005360 mashing Methods 0.000 claims description 5
- 238000007873 sieving Methods 0.000 claims description 5
- 238000003756 stirring Methods 0.000 claims description 5
- 239000002202 Polyethylene glycol Substances 0.000 claims description 3
- 229910052782 aluminium Inorganic materials 0.000 claims description 3
- 238000011049 filling Methods 0.000 claims description 3
- 229920001223 polyethylene glycol Polymers 0.000 claims description 3
- 239000007921 spray Substances 0.000 claims description 3
- 229910052721 tungsten Inorganic materials 0.000 claims description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 2
- 229910002804 graphite Inorganic materials 0.000 claims description 2
- 239000010439 graphite Substances 0.000 claims description 2
- 238000007780 powder milling Methods 0.000 claims description 2
- 238000012545 processing Methods 0.000 claims description 2
- 238000010298 pulverizing process Methods 0.000 claims description 2
- 229910052750 molybdenum Inorganic materials 0.000 claims 2
- 230000003647 oxidation Effects 0.000 abstract description 3
- 238000007254 oxidation reaction Methods 0.000 abstract description 3
- 238000001816 cooling Methods 0.000 description 6
- 238000005520 cutting process Methods 0.000 description 4
- 238000012360 testing method Methods 0.000 description 4
- 230000000052 comparative effect Effects 0.000 description 3
- 239000011521 glass Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 2
- 238000011068 loading method Methods 0.000 description 2
- 229910000838 Al alloy Inorganic materials 0.000 description 1
- 229910000831 Steel Inorganic materials 0.000 description 1
- 239000000853 adhesive Substances 0.000 description 1
- 230000001070 adhesive effect Effects 0.000 description 1
- 238000004458 analytical method Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 239000011230 binding agent Substances 0.000 description 1
- 238000010276 construction Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005238 degreasing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 238000005259 measurement Methods 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 150000002739 metals Chemical class 0.000 description 1
- 239000011812 mixed powder Substances 0.000 description 1
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- 238000010998 test method Methods 0.000 description 1
- WFKWXMTUELFFGS-UHFFFAOYSA-N tungsten Chemical compound [W] WFKWXMTUELFFGS-UHFFFAOYSA-N 0.000 description 1
- 239000010937 tungsten Substances 0.000 description 1
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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/12—Metallic powder containing non-metallic 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
- B22F1/00—Metallic powder; Treatment of metallic powder, e.g. to facilitate working or to improve properties
- B22F1/16—Metallic particles coated with a non-metal
-
- 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
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/04—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the coating material
- C23C4/06—Metallic material
- C23C4/067—Metallic material containing free particles of non-metal elements, e.g. carbon, silicon, boron, phosphorus or arsenic
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/12—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge characterised by the method of spraying
- C23C4/134—Plasma spraying
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23C—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
- C23C4/00—Coating by spraying the coating material in the molten state, e.g. by flame, plasma or electric discharge
- C23C4/18—After-treatment
-
- 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
-
- Y—GENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
- Y02—TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
- Y02P—CLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
- Y02P10/00—Technologies related to metal processing
- Y02P10/25—Process efficiency
Abstract
The invention relates to the technical field of high-strength high-toughness low-oxygen materials, in particular to a high-strength high-toughness low-oxygen component which is prepared by mixing 10-50 parts by weight of coated powder and 50-90 parts by weight of high-melting-point metal powder, spraying, cold forging and high-temperature sintering; the coated powder consists of 60-90 parts by weight of low-melting metal powder and 10-40 parts by weight of high polymer material, and the particle size range of the coated powder is 50-100 microns. The high polymer material is used for coating the low melting point metal powder, the low melting point metal is effectively protected in the plasma spraying process to reduce oxidation of the low melting point metal, the mechanical property of the component is improved, a cold forging technology is adopted for treating a formed part subjected to plasma spraying, a typical large lamellar structure of a traditional plasma spraying coating is broken to be broken into small-size lamellar and block structures, and then after high-temperature sintering, a mixed structure of spherical, ellipsoidal and block particles can be formed, and the ductility and other mechanical properties of the component are improved.
Description
Technical Field
The invention relates to the technical field of high-strength high-toughness low-oxygen materials, in particular to a high-strength high-toughness low-oxygen component and a preparation method thereof.
Background
The mixed component member is widely applied in the fields of industry, aviation and the like, and has the advantages of high strength, high toughness and high toughness, and can play a long-term, effective and stable protection role on various severe use environments. Currently, there are two main production techniques for mixed component members, namely, a press sintering technique and a laser forming technique.
The pressing sintering technology is that powder and adhesive are packed into a mould, pressed into blocks and then put into a high temperature sintering furnace for high temperature sintering forming. The problem with this technique is that, due to the addition of the binder and degreasing during sintering, the formed part is large in shrinkage, even deformed, and the production efficiency is low, and the size of the produced member is limited (cannot exceed the size of the mold). Meanwhile, the pressed green body has low strength, and is easy to crush and collapse in the transportation and loading processes before the sintering process.
The laser forming technology is to melt and cool and solidify the paved powder by a laser or to melt and solidify the powder delivered by a powder delivering device. The problem of the technology is that when preparing a component with mixed components with larger melting point difference, the low-melting point component is easy to oxidize, so that more oxidized impurities are contained in the component, and the mechanical property of the component is influenced. When the components such as W-Fe, W-Cu and the like are prepared, the melting point of W is high, and the melting point of other components is low, so that the W component is easily molten and the low components are oxidized during laser forming, a large amount of oxides are brought in, the oxygen content in the material is high, and the mechanical properties of the components are affected.
Disclosure of Invention
The invention aims to solve the defects in the prior art and provides a high-strength high-toughness low-oxygen component and a preparation method thereof.
In order to achieve the above purpose, the present invention adopts the following technical scheme:
a high-strength high-toughness low-oxygen component is prepared by mixing 10-50 parts by weight of coated powder and 50-90 parts by weight of high-melting-point metal powder, spraying, cold forging and high-temperature sintering; the coating type powder consists of 60-90 parts by weight of low-melting metal powder and 10-40 parts by weight of high polymer material.
Preferably, the particle size of the coated powder is in the range of 50 to 100 microns.
Preferably, the low-melting metal powder is one or more of Al, cu, ni and Fe.
Preferably, the polymer material is one or more of polyethylene glycol, nylon and resin.
A preparation method of a high-strength high-toughness low-oxygen component comprises the following steps:
s1, mixing low-melting-point metal powder with a high polymer material to prepare powder, so as to obtain coated powder;
s2, mixing the coated powder with high-melting-point metal powder, and ball-milling to obtain prefabricated powder for plasma spraying;
s3, processing a matrix with a corresponding shape and size according to the shape and size of the required component;
s4, adopting a plasma spraying technology to spray the prefabricated powder on the substrate;
s5, removing the matrix after the spraying is finished to obtain a formed piece;
s6, performing cold forging on the formed piece;
and S7, sintering the formed piece at a high temperature to obtain the high-strength high-toughness low-oxygen component.
Preferably, the pulverizing mode in the step S1 is as follows: and (3) filling the high polymer material into a wide-mouth container, heating to soften the high polymer material, then pouring low-melting-point metal powder into the wide-mouth container at a constant speed, continuously stirring, taking out the high polymer material after the high polymer material is cooled and solidified, mashing the high polymer material by using a grinding rod, and sieving the high polymer material to obtain coated powder.
Preferably, the mixing mode in the step S2 is ball milling, the rotating speed is 400-500 r/min, and the ball-to-material ratio is 10: 1-20: 1.
preferably, the substrate is made of stainless steel or graphite.
Preferably, in the step S6, the cold forging speed is 2-6 mm/S, and the rotary forging angle is 45 degrees.
Preferably, in the step S7, the sintering temperature is 50 to 70% of the melting point of the high melting point metal component, and the sintering time is 2 to 8 hours.
The beneficial effects of the invention are as follows:
1. the low-melting-point metal powder is coated by the high-molecular material, so that the low-melting-point metal is effectively protected from oxidation or greatly reduced from oxidation in the plasma spraying process, the oxygen content in the component is further reduced, and the mechanical property of the component is improved.
2. The plasma sprayed component is treated by using a cold forging technology, so that a large number of lamellar structures in the component are broken into short lamellar layers, and preparation is made for subsequent high-temperature sintering.
3. And the components are subjected to post-treatment by utilizing a high-temperature sintering technology, so that short and small sheets in the components are continuously fused, grown and corners of the components are continuously dissolved, and finally, a spherical, ellipsoidal and blocky mixed structure is formed, and meanwhile, air holes are continuously reduced. Finally, the fracture toughness and other mechanical properties of the component are improved, and the compactness of the component is improved.
Drawings
FIG. 1 is a schematic diagram of the preparation of a polymer material coated low-melting-point metal powder according to the present invention;
FIG. 2 is a schematic diagram of a forming member manufacturing process according to the present invention;
fig. 3 is a flow chart of a process for manufacturing a component according to the present invention.
In the figure: 1-a softened polymeric material; 2-low melting point metal powder; 3-coated mixed powder particles.
Detailed Description
The following description of the embodiments of the present invention will be made clearly and completely with reference to the accompanying drawings, in which it is apparent that the embodiments described are only some embodiments of the present invention, but not all embodiments.
Embodiment one:
a high-strength high-toughness low-oxygen component is prepared by mixing 30 parts by weight of coated powder and 70 parts by weight of W powder, spraying, cold forging and high-temperature sintering;
the coating type powder consists of 80 parts by weight of Ni powder and 20 parts by weight of nylon powder, and the particle size range is 50-100 microns.
A preparation method of a high-strength high-toughness low-oxygen component comprises the following steps:
s1, mixing Ni powder and nylon powder to prepare powder: filling nylon powder into a stainless steel basin, heating to 350 ℃ to soften the nylon powder, then pouring Ni powder into the stainless steel basin at a constant speed, continuously stirring the nylon powder with a glass rod, after all the Ni powder is poured into the stainless steel basin and uniformly stirred, waiting for cooling and solidifying the nylon powder, taking out the solidified block, mashing the nylon powder with a grinding rod, and sieving the nylon powder to obtain coated powder with the granularity ranging from 50 microns to 100 microns.
S2, mixing the coated powder with the W powder, ball milling, wherein the rotating speed is 450 rpm, and the ball-to-material ratio is 20:1, obtaining prefabricated powder for plasma spraying;
s3, taking the stainless steel plate as a substrate, adopting a plasma spraying technology, spraying prefabricated powder on the substrate with the spraying power of 50kW for 1 hour to obtain a thick coating (namely a formed piece) with the size of 500 multiplied by 400 multiplied by 50mm and the substrate;
s4, removing the stainless steel matrix through linear cutting to obtain a formed piece;
s5, carrying out cold forging on the formed piece, wherein the cold forging speed is 2mm/S, and the rotary forging angle is 45 degrees;
s6, sintering the formed part at a high temperature by a high-temperature furnace, wherein the sintering temperature is 2000 ℃, the sintering time is 4 hours, and cooling to room temperature along with the furnace to obtain the high-strength high-toughness low-oxygen component with high density and strong fracture toughness.
Embodiment two:
a high-strength high-toughness low-oxygen component is prepared by mixing 20 parts by weight of coated powder and 80 parts by weight of Mo powder, spraying, cold forging and high-temperature sintering;
the coated powder consists of 70 parts by weight of Fe powder and 30 parts by weight of resin, and the particle size range is 50-100 microns.
A preparation method of a high-strength high-toughness low-oxygen component comprises the following steps:
s1, mixing Fe powder with resin to prepare powder: placing the resin powder into a stainless steel basin, heating to 300 ℃ to soften the resin powder, then pouring the Fe powder into the stainless steel basin at a constant speed, continuously stirring the Fe powder by using a glass rod, after all the Fe powder is poured into the stainless steel basin and uniformly stirred, waiting for cooling and solidifying the resin powder, taking out the solidified block, mashing the solidified block by using a grinding rod, and sieving the crushed block to obtain the coated powder with the granularity ranging from 50 microns to 100 microns.
S2, mixing the coated powder with Mo powder, ball milling, wherein the rotating speed is 450 rpm, and the ball-to-material ratio is 20:1, obtaining prefabricated powder for plasma spraying;
s3, taking the stainless steel plate as a substrate, and spraying the prefabricated powder on the substrate by adopting a plasma spraying technology. The spraying power is 50kW, and the spraying is carried out for 1.5 hours, so that a thick coating (namely a formed piece) and a substrate with the dimensions of 600 multiplied by 500 multiplied by 100mm are obtained;
s4, removing the stainless steel matrix through linear cutting to obtain a formed piece;
s5, carrying out cold forging on the formed piece, wherein the cold forging speed is 4mm/S, and the rotary forging angle is 45 degrees;
s6, sintering the formed part at a high temperature by a high-temperature furnace, wherein the sintering temperature is 1800 ℃, the sintering time is 6 hours, and cooling to room temperature along with the furnace to obtain the high-strength high-toughness low-oxygen component with high density and strong fracture toughness.
Embodiment III:
a high-strength high-toughness low-oxygen component is prepared by mixing 30 parts by weight of coated powder and 70 parts by weight of Mo powder, spraying, cold forging and high-temperature sintering;
the coated powder consists of 70 parts by weight of Ni powder and 30 parts by weight of resin, and the particle size range is 50-100 microns.
A preparation method of a high-strength high-toughness low-oxygen component comprises the following steps:
s1, mixing Ni powder with resin to prepare powder: loading resin powder into a stainless steel basin, heating to 300 ℃ to soften the resin powder, then pouring Ni powder into the stainless steel basin at a constant speed, continuously stirring the Ni powder by using a glass rod, after all the Ni powder is poured into the stainless steel basin and uniformly stirred, waiting for cooling and solidifying the resin powder, taking out the solidified block, mashing the solidified block by using a grinding rod, and sieving the solidified block to obtain coated powder with the granularity ranging from 50 microns to 100 microns.
S2, mixing the coated powder with Mo powder, ball milling, wherein the rotating speed is 400 rpm, and the ball-to-material ratio is 20:1, obtaining prefabricated powder for plasma spraying;
s3, taking the stainless steel plate as a substrate, and spraying the prefabricated powder on the substrate by adopting a plasma spraying technology. The spraying power is 50kW, and the spraying is carried out for 2 hours, so that a thick coating (namely a formed piece) and a substrate with the size of 800 multiplied by 600 multiplied by 80mm are obtained;
s4, removing the stainless steel matrix through linear cutting to obtain a formed piece;
s5, carrying out cold forging on the formed piece, wherein the cold forging speed is 4mm/S, and the rotary forging angle is 45 degrees;
s6, sintering the formed part at a high temperature by a high-temperature furnace, wherein the sintering temperature is 2000 ℃, the sintering time is 4 hours, and cooling to room temperature along with the furnace to obtain the high-strength high-toughness low-oxygen component with high density and strong fracture toughness.
Comparative example:
mixing Ni powder and Mo powder, ball milling at a rotating speed of 400 rpm, and a ball-to-material ratio of 20:1, obtaining prefabricated powder for plasma spraying;
and taking the stainless steel plate as a matrix, and adopting a plasma spraying technology to spray the prefabricated powder on the matrix. The spraying power is 50kW, and the spraying is carried out for 2 hours, so that a thick coating (namely a formed piece) and a substrate with the size of 800 multiplied by 600 multiplied by 80mm are obtained;
the stainless steel matrix was removed by wire cutting to obtain a molded article.
The members in examples one to three and the comparative examples were subjected to tensile strength, yield strength, elongation and oxygen content tests (test references GB/T13239-2006 (low temperature tensile test method for metallic materials), GB/T5237.4-2017 (aluminum alloy construction section), GB/T17737.308-2018 (tensile strength and elongation test for copper-clad metals by mechanical test method), GB/T4324 (tungsten chemistry analysis method), GB/T11261-2006 (measurement of steel oxygen content) standards), and the test results were as follows:
| examples | Tensile strength/MPa | Yield strength/MPa | Extensibility/% | Oxygen content/% |
| Example 1 | 823 | 605 | 13.2 | 0.8 |
| Example two | 852 | 719 | 17.6 | 0.5 |
| Example III | 916 | 735 | 17.8 | 0.7 |
| Comparative example | 462 | 227 | 8.4 | 3.2 |
The foregoing is only a preferred embodiment of the present invention, but the scope of the present invention is not limited thereto, and any person skilled in the art, who is within the scope of the present invention, should make equivalent substitutions or modifications according to the technical scheme of the present invention and the inventive concept thereof, and should be covered by the scope of the present invention.
Claims (8)
1. A high-strength high-toughness low-oxygen component is characterized in that the component is prepared by mixing 10-50 parts by weight of coating powder and 50-90 parts by weight of high-melting-point metal powder, spraying, cold forging and high-temperature sintering;
the coating type powder consists of 60-90 parts by weight of low-melting point metal powder and 10-40 parts by weight of high polymer material;
the low-melting-point metal powder is one or more of Al, cu, ni and Fe;
the high polymer material is one or more of polyethylene glycol, nylon and resin;
the high-melting-point metal powder is one or two of W and Mo.
2. The high strength, high toughness, low oxygen component of claim 1, wherein the coated powder has a particle size in the range of 50 to 100 microns.
3. The preparation method of the high-strength high-toughness low-oxygen component is characterized by comprising the following steps of:
s1, mixing 60-90 parts by weight of low-melting-point metal powder with 10-40 parts by weight of high polymer material to prepare powder, and obtaining coated powder;
s2, mixing 10-50 parts by weight of coated powder with 50-90 parts by weight of high-melting-point metal powder, and ball milling to obtain prefabricated powder for plasma spraying;
s3, processing a matrix with a corresponding shape and size according to the shape and size of the required component;
s4, adopting a plasma spraying technology to spray the prefabricated powder on the substrate;
s5, removing the matrix after the spraying is finished to obtain a formed piece;
s6, performing cold forging on the formed piece;
s7, sintering the formed piece at a high temperature to obtain a high-strength high-toughness low-oxygen component;
the low-melting-point metal powder is one or more of Al, cu, ni and Fe;
the high polymer material is one or more of polyethylene glycol, nylon and resin;
the high-melting-point metal powder is one or two of W and Mo.
4. The method for preparing a high-strength and high-toughness low-oxygen component according to claim 3, wherein the pulverizing method in step S1 is as follows: and (3) filling the high polymer material into a wide-mouth container, heating to soften the high polymer material, then pouring low-melting-point metal powder into the wide-mouth container at a constant speed, continuously stirring, taking out the high polymer material after the high polymer material is cooled and solidified, mashing the high polymer material by using a grinding rod, and sieving the high polymer material to obtain coated powder.
5. The method for preparing a high-strength high-toughness low-oxygen component according to claim 3, wherein the mixing mode in the step S2 is ball milling, the rotating speed is 400-500 rpm, and the ball-to-material ratio is 10: 1-20: 1.
6. the method of claim 3, wherein the substrate is made of stainless steel or graphite.
7. The method for producing a high-strength and high-toughness low-oxygen component according to claim 3, wherein in the step S6, the cold forging rate is 2-6 mm/S, and the rotary forging angle is 45 °.
8. The method of producing a high-strength and high-toughness low-oxygen component according to claim 3, wherein in step S7, the sintering temperature is 50 to 70% of the melting point of the high-melting point metal component, and the sintering time is 2 to 8 hours.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202310533024.2A CN116475411B (en) | 2023-05-11 | 2023-05-11 | High-strength high-toughness low-oxygen component and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN202310533024.2A CN116475411B (en) | 2023-05-11 | 2023-05-11 | High-strength high-toughness low-oxygen component and preparation method thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| US4788080A (en) * | 1987-04-27 | 1988-11-29 | Canadian Patents And Development Limited | Process and apparatus for coating particles with fine powder |
| CN112981169A (en) * | 2021-02-05 | 2021-06-18 | 中国人民解放军陆军装甲兵学院 | Copper-based composite powder and preparation method thereof, and anti-corrosion wear-resistant composite coating and preparation method thereof |
| CN115491629A (en) * | 2022-10-17 | 2022-12-20 | 河北工业大学 | Method for preparing Ti-Al-C-based composite coating by using plasma spraying |
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| DE102013004985A1 (en) * | 2012-11-14 | 2014-05-15 | Volkswagen Aktiengesellschaft | Method for producing a permanent magnet and permanent magnet |
| WO2020123848A1 (en) * | 2018-12-13 | 2020-06-18 | Oerlikon Metco (Us) Inc. | Mechanically alloyed metallic thermal spray coating material and thermal spray coating method utilizing the same |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US4788080A (en) * | 1987-04-27 | 1988-11-29 | Canadian Patents And Development Limited | Process and apparatus for coating particles with fine powder |
| CN112981169A (en) * | 2021-02-05 | 2021-06-18 | 中国人民解放军陆军装甲兵学院 | Copper-based composite powder and preparation method thereof, and anti-corrosion wear-resistant composite coating and preparation method thereof |
| CN115491629A (en) * | 2022-10-17 | 2022-12-20 | 河北工业大学 | Method for preparing Ti-Al-C-based composite coating by using plasma spraying |
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