CN115948686A - Preparation method of high-manganese high-temperature vacuum alloy - Google Patents
Preparation method of high-manganese high-temperature vacuum alloy Download PDFInfo
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- CN115948686A CN115948686A CN202211725696.5A CN202211725696A CN115948686A CN 115948686 A CN115948686 A CN 115948686A CN 202211725696 A CN202211725696 A CN 202211725696A CN 115948686 A CN115948686 A CN 115948686A
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- manganese
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- 239000000956 alloy Substances 0.000 title claims abstract description 64
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 53
- 239000011572 manganese Substances 0.000 title claims abstract description 37
- 229910052748 manganese Inorganic materials 0.000 title claims abstract description 30
- 238000002360 preparation method Methods 0.000 title claims abstract description 11
- 238000005266 casting Methods 0.000 claims abstract description 33
- 238000005096 rolling process Methods 0.000 claims abstract description 24
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 238000003723 Smelting Methods 0.000 claims abstract description 9
- 239000002994 raw material Substances 0.000 claims abstract description 8
- 238000004321 preservation Methods 0.000 claims abstract description 4
- 238000005303 weighing Methods 0.000 claims abstract description 4
- 238000000034 method Methods 0.000 claims description 15
- 229910052802 copper Inorganic materials 0.000 claims description 9
- XKRFYHLGVUSROY-UHFFFAOYSA-N Argon Chemical compound [Ar] XKRFYHLGVUSROY-UHFFFAOYSA-N 0.000 claims description 6
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims description 6
- 238000005219 brazing Methods 0.000 claims description 5
- 229910052786 argon Inorganic materials 0.000 claims description 3
- 238000004140 cleaning Methods 0.000 claims description 3
- 238000010438 heat treatment Methods 0.000 claims description 3
- 229910052757 nitrogen Inorganic materials 0.000 claims description 3
- 238000012545 processing Methods 0.000 abstract description 3
- 239000010949 copper Substances 0.000 description 9
- 239000000463 material Substances 0.000 description 9
- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 description 8
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 description 6
- 239000000243 solution Substances 0.000 description 6
- 230000000694 effects Effects 0.000 description 5
- 230000007797 corrosion Effects 0.000 description 4
- 238000005260 corrosion Methods 0.000 description 4
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 3
- 229910052759 nickel Inorganic materials 0.000 description 3
- 239000001301 oxygen Substances 0.000 description 3
- 229910052760 oxygen Inorganic materials 0.000 description 3
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 2
- 229910052799 carbon Inorganic materials 0.000 description 2
- UTICYDQJEHVLJZ-UHFFFAOYSA-N copper manganese nickel Chemical compound [Mn].[Ni].[Cu] UTICYDQJEHVLJZ-UHFFFAOYSA-N 0.000 description 2
- 238000002844 melting Methods 0.000 description 2
- 230000008018 melting Effects 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000005204 segregation Methods 0.000 description 2
- 238000005728 strengthening Methods 0.000 description 2
- 230000002411 adverse Effects 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005520 cutting process Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000006477 desulfuration reaction Methods 0.000 description 1
- 230000023556 desulfurization Effects 0.000 description 1
- 239000006185 dispersion Substances 0.000 description 1
- 238000009472 formulation Methods 0.000 description 1
- 238000004519 manufacturing process Methods 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000000704 physical effect Effects 0.000 description 1
- 230000005616 pyroelectricity Effects 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 239000006104 solid solution Substances 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000006467 substitution reaction Methods 0.000 description 1
Classifications
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- 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
- Y02P10/20—Recycling
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- Manufacture And Refinement Of Metals (AREA)
Abstract
The invention relates to the technical field of alloy materials, provides a preparation method of a high-manganese high-temperature vacuum alloy, and solves the technical problems of low yield and high processing difficulty of the conventional high-manganese high-temperature vacuum alloy. The high-manganese high-temperature vacuum alloy consists of the following components, by mass, 40-46% of Mn, 10-15% of Ni and the balance of Cu, and is characterized by comprising the following steps: s1, weighing raw materials; s2, smelting; s3, casting; s4, vehicle stripping; s5, cogging; s6, middle rolling; s7, finish rolling; wherein, in the step S3, before casting, the die is heated, so that the temperature difference between the die and the alloy melt is less than 300 ℃; in the step S7, the rolling deformation rate of each pass is 20-25%, annealing is carried out after each pass of rolling, the annealing temperature is 760 ℃, and the heat preservation time is 6 hours.
Description
Technical Field
The invention relates to the technical field of alloy materials, in particular to a preparation method of a high-manganese high-temperature vacuum alloy.
Background
At present, the domestic mature high-strength, high-temperature and wear-resistant alloy material is mainly a copper-manganese-nickel material. The formula principle is as follows:
the copper and the nickel can be infinitely dissolved in the solution, the mechanical property and the physical property of the material can be obviously improved by adding the nickel into the pure copper, so that the strength, the hardness, the corrosion resistance, the pyroelectricity, the ductility and other properties of the material are greatly improved, and the temperature coefficient of resistivity can be reduced. Manganese is dissolved in a metal material matrix and has a solid solution strengthening effect. Meanwhile, manganese can form carbide with carbon in the alloy, so that the adverse effect of excessive carbon on the material is eliminated, the dispersion strengthening effect is achieved, and the wettability of the alloy material is enhanced. Manganese can also enhance the strength, hardness, wear resistance, corrosion resistance and elasticity of the alloy, and manganese also has the functions of deoxidation and desulfurization, and can adjust copper and nickel, improve the process, improve the performance, ensure better processability and more excellent overall performance.
Most of the copper-manganese-nickel material products developed in the industry at present contain less than 30% of manganese. However, in some high-end applications, the original formulation needs to be modified, for example, the content of manganese is increased, in order to achieve higher strength, hardness, better wear resistance and corrosion resistance.
In the research and development process of the applicant, when the content of Mn is further increased to more than 40%, the strength, hardness, wear resistance and corrosion resistance of the alloy material can be expected and obviously improved, but the yield of the alloy material is low, the processing difficulty is high, and the two aspects are mainly reflected as follows:
(1) The shrinkage cavity of the casting is increased, and the vicinity of the shrinkage cavity is often seriously loosened, segregated and aggregated with oxygen ratio substances, which seriously affects the performance and quality of the material and can cause excessive deformation or fracture accidents of engineering components;
(2) The brittleness of the material becomes strong, and the alloy material is easy to crack and break in the rolling process.
Therefore, a preparation method of the high-manganese high-temperature vacuum alloy is provided.
Disclosure of Invention
Technical problem to be solved
Aiming at the defects of the prior art, the invention provides a preparation method of a high-manganese high-temperature vacuum alloy, which solves the technical problems of low yield and high processing difficulty of the conventional high-manganese high-temperature vacuum alloy.
(II) technical scheme
In order to achieve the purpose, the invention is realized by the following technical scheme:
the preparation method of the high-manganese high-temperature vacuum alloy comprises the following components, by mass, 40-46% of Mn, 10-15% of Ni and the balance of Cu, and is characterized in that the preparation method comprises the following steps
S1, weighing three raw materials of Mn, ni and Cu according to the component ratio;
s2, putting the three raw materials of Mn, ni and Cu into a high vacuum brazing furnace for smelting, wherein the smelting temperature is 1500 ℃, and the vacuum degree is higher than 7.9 multiplied by 10-Pa, so as to obtain an alloy melt;
s3, casting the alloy melt into a mold to obtain an alloy casting with the thickness of 3cm, and heating the mold before casting to enable the temperature difference between the mold and the alloy melt to be less than 300 ℃;
s4, removing the thickness of each of the upper surface and the lower surface of the alloy casting by using a car;
s5, cogging and rolling the alloy casting to a thickness of less than 1.3mm;
s6, rolling the alloy casting to a thickness of less than 0.8mm;
s7, performing finish rolling on the alloy casting to obtain the alloy casting with the thickness of 0.05mm;
in the step S7, the rolling deformation rate of each pass is 20-25%, annealing is carried out after each pass of rolling, the annealing temperature is 760 ℃, and the heat preservation time is 6 hours.
Furthermore, the smelting adopts argon protection, and the annealing adopts nitrogen protection.
Further, after the steps S3 and S7, the alloy castings are respectively cleaned.
Further, after step S7, the pair Jin Zhujian is cut and pressed to a desired specification.
(III) advantageous effects
The invention provides a preparation method of a high-manganese high-temperature vacuum alloy, which has the following beneficial effects:
1. in addition, the invention also actively heats the die before casting, so that the temperature difference between the die and the alloy melt is less than 300 ℃, and even if the Mn content of the alloy material is more than 40 percent, shrinkage cavities and segregation are not easy to occur, thereby improving the yield of the product.
2. The alloy material has the advantages that the Mn content is more than 40%, the hardness is high, the brittleness is high, the alloy material is not easy to crack and fracture after being rolled in each pass by accurately controlling the rolling deformation rate of each pass in the middle rolling and finish rolling processes, and meanwhile, the annealing is carried out after each pass of rolling, so that the residual stress of the material is reduced, and the deformation and crack tendency is reduced.
3. The invention enables the yield of the alloy material to reach more than 45% through the comprehensive effect of the two points.
4. The high-manganese high-temperature vacuum alloy prepared by the invention has good performance, and particularly,
(1) Oxygen content of the product: less than or equal to 35ppm;
(2) The brazing seam leakage rate: not more than 5X 10 -10 atmcc/sec；
(3) Tensile strength: more than or equal to 700M Pa;
(4) Brinell hardness: HBS is more than or equal to 350;
(5) Melting temperature: 1050-1130 ℃;
(6) Elongation percentage: not less than 13 percent.
Detailed Description
In order to make the objects, technical solutions and advantages of the embodiments of the present invention clearer, the technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the embodiments of the present invention, and it is obvious that the described embodiments are some embodiments of the present invention, but not all embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
The preparation method of the high-manganese high-temperature vacuum alloy comprises the following components, by mass, 44% of Mn, 15% of Ni and the balance of Cu, and comprises the following steps
S1, weighing three raw materials of Mn, ni and Cu according to the component proportion, wherein the purity of the three raw materials is 99.9%;
s2, putting the three raw materials of Mn, ni and Cu into a high vacuum brazing furnace for smelting, wherein the smelting temperature is 1500 ℃, the vacuum degree is 8.0 multiplied by 10-Pa, and argon protection is adopted to obtain an alloy melt;
s3, casting the alloy melt into a mold to obtain an alloy casting with the thickness of 3cm, and heating the mold before casting, wherein the temperature difference between the mold and the alloy melt is 300 ℃;
cleaning the alloy casting;
s4, removing the thickness of each of the upper surface and the lower surface of the alloy casting by using a vehicle;
s5, cogging and rolling the alloy casting to a thickness of 1.2mm;
s6, rolling the alloy casting to a thickness of 0.6mm;
s7, performing finish rolling on the alloy casting to obtain the alloy casting with the thickness of 0.05mm;
in the step S7, the rolling deformation rate of each pass is 20-25%, annealing is carried out after each pass of rolling, the annealing temperature is 760 ℃, the heat preservation time is 6 hours, and nitrogen protection is adopted;
s8, cleaning the alloy casting;
s9, cutting, wherein the width of the strip is 50mm;
and S10, stamping, namely stamping into various specifications by using different stamping dies according to requirements.
The casting obtained in the production process of the process has no shrinkage cavity and segregation, and the yield of the material reaches 45 percent.
The high-manganese high-temperature vacuum alloy prepared by the embodiment has good performance, specifically as follows,
(1) Oxygen content of the product: 33ppm;
(2) The brazing seam leakage rate: 4X 10 -10 atmcc/sec；
(3) Tensile strength: 720M Pa;
(4) Brinell hardness: 360 HBS;
(5) Melting temperature: 1090 deg.C;
(6) Elongation percentage: 13.5 % of the total weight of the composition.
It should be noted that, in this document, the terms "comprises," "comprising," or any other variation thereof, are intended to cover a non-exclusive inclusion, such that a process, method, article, or apparatus that comprises a list of elements does not include only those elements but may include other elements not expressly listed or inherent to such process, method, article, or apparatus. Without further limitation, an element defined by the phrase "comprising a … …" does not exclude the presence of another identical element in a process, method, article, or apparatus that comprises the element.
The above examples are only intended to illustrate the technical solution of the present invention, and not to limit it; although the present invention has been described in detail with reference to the foregoing embodiments, it will be understood by those of ordinary skill in the art that: the technical solutions described in the foregoing embodiments may still be modified, or some technical features may be equivalently replaced; and such modifications or substitutions do not depart from the spirit and scope of the corresponding technical solutions of the embodiments of the present invention.
Claims (4)
1. The high-manganese high-temperature vacuum alloy comprises, by mass, 40-46% of Mn, 10-15% of Ni and the balance of Cu;
the preparation method is characterized by comprising the following steps:
s1, weighing three raw materials of Mn, ni and Cu according to the component proportion;
s2, putting the three raw materials of Mn, ni and Cu into a high vacuum brazing furnace for smelting, wherein the smelting temperature is 1500 ℃, and the vacuum degree is higher than 7.9 multiplied by 10-Pa, so as to obtain an alloy melt;
s3, casting the alloy melt into a mold to obtain an alloy casting with the thickness of 3cm, and heating the mold before casting to enable the temperature difference between the mold and the alloy melt to be less than 300 ℃;
s4, removing the thickness of each of the upper surface and the lower surface of the alloy casting by using a car;
s5, cogging and rolling the alloy casting to a thickness of less than 1.3mm;
s6, rolling the alloy casting to a thickness of less than 0.8mm;
s7, performing finish rolling on the alloy casting to obtain the alloy casting with the thickness of 0.05mm;
in the step S7, the rolling deformation rate of each pass is 20-25%, annealing is carried out after each pass of rolling, the annealing temperature is 760 ℃, and the heat preservation time is 6 hours.
2. The method for preparing high-manganese high-temperature vacuum alloy according to claim 1, wherein the method comprises the following steps: the smelting adopts argon protection, and the annealing adopts nitrogen protection.
3. The method for preparing high-manganese high-temperature vacuum alloy according to claim 1, wherein the method comprises the following steps: and after the steps S3 and S7, respectively cleaning the alloy castings.
4. The method for preparing high-manganese high-temperature vacuum alloy according to claim 1, wherein the method comprises the following steps: after step S7, the involution Jin Zhujian is cut and pressed to a desired specification.
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| CN202211725696.5A CN115948686B (en) | 2022-12-31 | 2022-12-31 | Preparation method of high-manganese high-temperature vacuum alloy |
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Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100003159A1 (en) * | 2005-10-14 | 2010-01-07 | Tzeng-Feng Liu | Low-density high-toughness alloy and the fabrication method thereof |
| CN103981396A (en) * | 2014-05-09 | 2014-08-13 | 曹帅 | High-damping Mn-Ni-based damping alloy and preparation method thereof |
| CN107641732A (en) * | 2017-09-19 | 2018-01-30 | 西南交通大学 | A kind of preparation method of high-damping two-phase Mn Cu alloys |
| CN109777998A (en) * | 2019-03-25 | 2019-05-21 | 西南交通大学 | A kind of high-strength and high damping Mn-Cu based alloy and preparation method thereof |
| WO2020064127A1 (en) * | 2018-09-28 | 2020-04-02 | Thyssenkrupp Steel Europe Ag | Shape-memory alloy, flat steel product made therefrom with pseudo-elastic properties, and method for producing such a flat steel product |
| CN114134378A (en) * | 2021-09-15 | 2022-03-04 | 上海大学 | High-entropy high-temperature manganese-based damping alloy material and preparation method thereof |
| CN115233007A (en) * | 2022-08-19 | 2022-10-25 | 西安瑞鑫科金属材料有限责任公司 | Preparation method of high Mn copper alloy foil for brazing |
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2022
- 2022-12-31 CN CN202211725696.5A patent/CN115948686B/en active Active
Patent Citations (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| US20100003159A1 (en) * | 2005-10-14 | 2010-01-07 | Tzeng-Feng Liu | Low-density high-toughness alloy and the fabrication method thereof |
| CN103981396A (en) * | 2014-05-09 | 2014-08-13 | 曹帅 | High-damping Mn-Ni-based damping alloy and preparation method thereof |
| CN107641732A (en) * | 2017-09-19 | 2018-01-30 | 西南交通大学 | A kind of preparation method of high-damping two-phase Mn Cu alloys |
| WO2020064127A1 (en) * | 2018-09-28 | 2020-04-02 | Thyssenkrupp Steel Europe Ag | Shape-memory alloy, flat steel product made therefrom with pseudo-elastic properties, and method for producing such a flat steel product |
| CN109777998A (en) * | 2019-03-25 | 2019-05-21 | 西南交通大学 | A kind of high-strength and high damping Mn-Cu based alloy and preparation method thereof |
| CN114134378A (en) * | 2021-09-15 | 2022-03-04 | 上海大学 | High-entropy high-temperature manganese-based damping alloy material and preparation method thereof |
| CN115233007A (en) * | 2022-08-19 | 2022-10-25 | 西安瑞鑫科金属材料有限责任公司 | Preparation method of high Mn copper alloy foil for brazing |
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