CN117626056A - High-strength pure nickel wire and preparation method thereof - Google Patents
High-strength pure nickel wire and preparation method thereof Download PDFInfo
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- CN117626056A CN117626056A CN202311582827.3A CN202311582827A CN117626056A CN 117626056 A CN117626056 A CN 117626056A CN 202311582827 A CN202311582827 A CN 202311582827A CN 117626056 A CN117626056 A CN 117626056A
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- PXHVJJICTQNCMI-UHFFFAOYSA-N Nickel Chemical compound [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 title claims abstract description 66
- 238000002360 preparation method Methods 0.000 title abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 23
- 239000000654 additive Substances 0.000 claims abstract description 13
- 230000000996 additive effect Effects 0.000 claims abstract description 13
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 11
- 239000000956 alloy Substances 0.000 claims abstract description 11
- 239000006104 solid solution Substances 0.000 claims abstract description 10
- 238000000137 annealing Methods 0.000 claims description 22
- 238000001816 cooling Methods 0.000 claims description 17
- 238000000034 method Methods 0.000 claims description 16
- 238000001953 recrystallisation Methods 0.000 claims description 12
- 229910052720 vanadium Inorganic materials 0.000 claims description 8
- 238000003723 Smelting Methods 0.000 claims description 7
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000005098 hot rolling Methods 0.000 claims description 5
- 238000007599 discharging Methods 0.000 claims description 4
- 229910052746 lanthanum Inorganic materials 0.000 claims description 4
- 238000004519 manufacturing process Methods 0.000 claims description 4
- 229910052684 Cerium Inorganic materials 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims description 3
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 238000005242 forging Methods 0.000 claims description 3
- 238000002844 melting Methods 0.000 claims description 3
- 230000008018 melting Effects 0.000 claims description 3
- 229910052750 molybdenum Inorganic materials 0.000 claims description 3
- 229910052748 manganese Inorganic materials 0.000 abstract description 6
- 238000010438 heat treatment Methods 0.000 description 7
- 238000005260 corrosion Methods 0.000 description 6
- 230000007797 corrosion Effects 0.000 description 6
- 239000013078 crystal Substances 0.000 description 3
- 239000002184 metal Substances 0.000 description 3
- 229910052751 metal Inorganic materials 0.000 description 3
- 230000006911 nucleation Effects 0.000 description 3
- 238000010899 nucleation Methods 0.000 description 3
- 238000005728 strengthening Methods 0.000 description 3
- 239000002131 composite material Substances 0.000 description 2
- 230000000694 effects Effects 0.000 description 2
- 238000000265 homogenisation Methods 0.000 description 2
- 239000000463 material Substances 0.000 description 2
- 239000007769 metal material Substances 0.000 description 2
- 239000000203 mixture Substances 0.000 description 2
- 238000010791 quenching Methods 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 238000005491 wire drawing Methods 0.000 description 2
- 241001391944 Commicarpus scandens Species 0.000 description 1
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 description 1
- 229910021193 La 2 O 3 Inorganic materials 0.000 description 1
- 229910000905 alloy phase Inorganic materials 0.000 description 1
- 230000015572 biosynthetic process Effects 0.000 description 1
- 230000003749 cleanliness Effects 0.000 description 1
- 238000005097 cold rolling Methods 0.000 description 1
- 229910052802 copper Inorganic materials 0.000 description 1
- 239000010949 copper Substances 0.000 description 1
- 238000007872 degassing Methods 0.000 description 1
- 239000012535 impurity Substances 0.000 description 1
- 230000006698 induction Effects 0.000 description 1
- 239000011159 matrix material Substances 0.000 description 1
- 239000000155 melt Substances 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 230000001590 oxidative effect Effects 0.000 description 1
- 238000005498 polishing Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001681 protective effect Effects 0.000 description 1
- 230000000171 quenching effect Effects 0.000 description 1
- 239000002994 raw material Substances 0.000 description 1
- 230000002787 reinforcement Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000005070 sampling Methods 0.000 description 1
- 239000002904 solvent Substances 0.000 description 1
- 238000003756 stirring Methods 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 239000000126 substance Substances 0.000 description 1
- 238000009864 tensile test Methods 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
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Abstract
The invention relates to a high-strength pure nickel wire and a preparation method thereof, wherein the mass percentage of each component of the wire is 0.05 to 0.15 percent of C,0.05 to 0.15 percent of Mn,0.10 to 0.35 percent of Si,0.10 to 0.50 percent of additive element X and the balance of Ni; the C, mn, si and X are all dissolved in nickel-based solid solution with face-centered cubic structure; the tensile strength of the wire rod is 400-500 Mpa. The wire rod has the advantages of high tensile strength, stable mechanical property and controllable mechanical property of alloy, and is particularly suitable for preparing high-strength pure nickel filter screens.
Description
Technical Field
The invention belongs to the field of metal materials, and particularly relates to a high-strength pure nickel wire and a preparation method thereof.
Background
Pure nickel is subject to corrosion in an oxidizing environment, and has excellent corrosion resistance because a protective film is easily formed on the surface of the pure nickel to prevent further corrosion. Meanwhile, the composite material also has high temperature resistance and high temperature structural stability, so that the composite material is commonly used for manufacturing parts in the chemical industry, nuclear power industry, aerospace industry and aviation industry. The pure nickel has the most widely used national standard marks of N4 and N6, has better corrosion resistance and has tensile strength of 300-400 Mpa.
The metal filter screen is commonly used for aviation filters, water purifier filters and the like, and has better corrosion resistance and higher tensile strength. The metal filter screen wire rod needs to have better corrosion resistance, and meanwhile, the tensile strength needs to meet 400-500 Mpa, so that the service life of the filter screen is ensured.
The strength of the pure nickel strip at home and abroad is strictly and equally compared, the tensile strength of the strip is improved by improving the content of Mn, fe, si and other elements at home and abroad, and the improvement of the tensile strength of the pure nickel is limited. The research of the method is that the cold rolling deformation of the strip is controlled to 9% in a mechanical straightening mode, and the tensile strength is increased to 420-450 Mpa. For the filter screen wire rod, the stress-free influence of the material needs to be ensured to ensure the stability of the use process, so that the cold working mode for improving the tensile strength is not applicable.
Yang Zhe and the like analyze the influence of alloy elements on the pure nickel strip, and find that the tensile strength of the pure nickel strip can be effectively improved by improving the C, mg content in the pure nickel, and C element mainly forms NiC with Ni, so that the grain boundary is easy to weaken and brittle fracture occurs due to the formation of the grain boundary. The existence of Mg element can improve the nucleation rate of pure nickel, and refine grains so as to improve the tensile strength. As Mg element is more active, the yield of the Mg element after smelting is greatly influenced by the cleanliness and purity of raw materials and the vacuum degree of smelting equipment, the content of the Mg element in production and application is difficult to control, and the method has no strong feasibility.
Most of the existing pure nickel materials have the strength reaching about 400MPa by optimizing components, but are easy to break in the process of preparing fine wires to draw, and the product quality is unstable.
Disclosure of Invention
The invention aims to provide a high-strength pure nickel wire and a preparation method thereof, wherein the pure nickel wire has the advantages of high tensile strength (the tensile strength is 400-500 Mpa), stable and controllable mechanical properties by adding microelements and an annealing process, and is particularly suitable for preparing a high-strength pure nickel filter screen.
The technical scheme of the invention is as follows:
the high-strength pure nickel wire comprises, by mass, 0.05% -0.15% of C,0.05% -0.15% of Mn,0.10% -0.35% of Si,0.10% -0.50% of additive element X and the balance of Ni;
the C, mn, si and X are all dissolved in nickel-based solid solution with face-centered cubic structure;
the tensile strength of the wire rod is 400-500 Mpa.
The further technical scheme is that the alloy comprises, by mass, 0.10% -0.12% of C,0.10% -0.12% of Mn,0.10% -0.15% of Si,0.10% -0.50% of additive element X and the balance of Ni;
the additive element X is a combination of at least four of Ti, V, ce, la, cr, mo.
The additive element X comprises 0.05 to 0.25 percent of Ti,0.05 to 0.25 percent of V,0.10 to 0.30 percent of Ce,0.10 to 0.30 percent of La,0.05 to 0.25 percent of Cr,0.05 to 0.25 percent of Mo and 0.10 to 0.50 percent of total mass percent of the additive element X.
The preparation method of the wire rod comprises the following steps:
1) Vacuum melting
Taking all the components according to the proportion of the wire rod, adopting vacuum smelting, and casting to obtain cast ingots, wherein the vacuum degree is less than or equal to 30 pa;
2) Homogenizing annealing
Forging an ingot into a blank, and hot-rolling to obtain a wire rod after hot-rolling; homogenizing and annealing the wire rod at 900-1050 ℃ for 1-3 hours, and rapidly cooling the wire rod after discharging from a furnace to obtain a wire rod blank;
3) Drawing
Homogenizing and annealing the wire blank, and drawing the wire blank into a wire;
4) Recrystallization annealing
Carrying out first recrystallization annealing on the wire; and drawing to obtain filaments, carrying out secondary recrystallization annealing on the filaments, wherein the temperature of the secondary recrystallization annealing is 850-1000 ℃, the time is 3-5 minutes, and rapidly cooling to room temperature, and the cooling speed is more than or equal to 30 ℃/s.
The diameter of the wire rod in the step 2) is 8.0-12.0 mm.
The diameter of the wire in the step 3) is 3.0-5.0 mm.
The diameter of the filaments in the step 4) is 0.8-1.5 mm.
And 4) the rapid cooling adopts water cooling.
The alloy is used for manufacturing the filter screen.
According to the invention, alloy elements are added on the basis of pure nickel components, and the tensile strength of the pure nickel wires is improved through solid solution strengthening and fine crystal strengthening, so that the tensile strength of the pure nickel wires is greatly improved, and the method has great practical significance for producing pure nickel wires for filter screens.
The main effect of each element in the application for improving the tensile strength is as follows:
C. the addition of Si element, and the homogenization annealing and recrystallization annealing processes at 850-1050 ℃ are matched, so that C, si element is fully dissolved in nickel-based solid solution, namely alloy phase formed by dissolving the melt atoms in the crystal lattice of the metal solvent. The pure nickel forms an interstitial solid solution, and the ordered structure generates lattice distortion, so that the tensile strength is improved.
Mn, cr, mo and other elements are added, the atomic radius difference between the Mn, cr, mo elements and the nickel element is small, nickel can be replaced in a pure nickel crystal structure to form a replacement solid solution, solid solution strengthening is formed, and the tensile strength of the alloy is improved.
Ti, V, ce, la, ti and V are easy to form carbide TiC, VC, ce and La are easy to form oxide CeO 2 、La 2 O 3 The oxide can effectively improve the nucleation rate as impurities in the nucleation process, so that the alloy forms fine-grain reinforcement.
In the wire rod preparation method, as a plurality of alloy additive elements are added, in order to ensure that the wire rod can be fully dissolved, the invention adopts a rapid cooling method to ensure that the interstitial solid solution is reserved in the wire rod matrix, thereby ensuring that the additive elements achieve the aim of improving the tensile strength. Therefore, the wire preparation method is characterized in that the heat treatment process adopts homogenization annealing and recrystallization annealing to ensure the solid solution effect of the alloy, so as to ensure the processing plasticity of the wire, the wire structure has no precipitated phase, the fine wire drawing process has no fracture, the product quality is stable, the requirement of more than 10000 meters of wire required by a filter screen is met, and the normal operation of the mesh is ensured.
Drawings
Fig. 1 is a flow chart of a preparation process of the wire rod according to the invention.
Detailed Description
Embodiments of the present invention are described in detail below.
Example 1: the components (mass percent) of the wire rod are 0.10 percent of C,0.10 percent of Mn,0.15 percent of Si,0.08 percent of Ti,0.08 percent of V,0.1 percent of Ce,0.08 percent of Cr and the balance of Ni.
Example 2: the components (mass percent) of the wire rod are 0.10 percent of C,0.10 percent of Mn,0.15 percent of Si,0.10 percent of Ti,0.10 percent of V,0.1 percent of La,0.08 percent of Mo and the balance of Ni.
Example 3 the components (mass% content) were 0.12% of C,0.12% of Mn,0.10% of Si,0.10% of Ce,0.10% of La,0.1% of Cr,0.08% of Mo, and the balance of Ni, based on the composition of the wire rod.
Example 4 the components (mass% content) were 0.10% of c,0.10% of mn,0.12% of si,0.08% of ti,0.08% of ce,0.10% of la,0.08% of cr,0.08% of mo, and the balance being Ni were taken according to the composition of the wire rod.
The components were prepared as described in any of examples 1-4 above using the following procedure (see fig. 1):
smelting by adopting a vacuum induction smelting furnace, vacuumizing a vacuum chamber to 10-30Pa and electrifying when smelting, fully stirring and degassing after alloy melting, and finally casting in a water-cooling copper mold to form an ingot; forging an ingot into a square billet with the diameter of 60mm, and carrying out hot rolling to obtain a wire rod with the diameter of 8.0mm, wherein the wire rod is subjected to the following treatment;
and (3) putting the wire rods into a trolley furnace for homogenizing annealing at 950 ℃ for 1.5 hours, immediately performing water cooling after discharging, performing surface polishing treatment on the wire rods, and drawing to 3.0mm. And then adopting a continuous heat treatment furnace to carry out primary recrystallization annealing, wherein the heating temperature is 900 ℃, and after the heating time is 5 minutes, water cooling is adopted to rapidly quench, and the cooling speed is more than or equal to 30 ℃/s. And (3) continuously drawing to 0.8mm by using a wire drawing machine, performing secondary recrystallization annealing again by using a continuous heat treatment furnace, heating to 870 ℃, performing water cooling rapid quenching after heating for 4 minutes, and discharging to obtain a finished product (pure nickel wire rod) at a cooling speed of more than or equal to 30 ℃/s.
The tensile strength of the finished product is tested by sampling, and the testing method refers to the part 1 of the national standard GB/T228.1-2010 tensile test of metallic materials: room temperature test methods.
The tensile strength test results are shown in the following table:
| sample of | Example 1 | Example 2 | Example 3 | Example 4 |
| Tensile Strength/Mpa | 456 | 463 | 424 | 445 |
The above description is not intended to limit the invention, and those skilled in the art will appreciate that many modifications are possible in the invention without departing from the spirit and scope of the invention.
Claims (10)
1. The high-strength pure nickel wire is characterized in that the mass percentage of each component of the wire is 0.05-0.15% of C, 0.05-0.15% of Mn, 0.10-0.35% of Si, 0.10-0.50% of additive element X and the balance of Ni;
the C, mn, si and X are all dissolved in nickel-based solid solution with face-centered cubic structure;
the tensile strength of the wire rod is 400-500 Mpa.
2. The wire rod according to claim 1, wherein the mass percentage of each component of the wire rod is 0.10-0.12% of C, 0.10-0.12% of Mn, 0.10-0.15% of Si, 0.10-0.50% of additive element X, and the balance of Ni.
3. The wire according to claim 1 or 2, characterized in that: the additive element X is a combination of at least four of Ti, V, ce, la, cr, mo.
4. A wire according to claim 3, characterized in that: the additive element X comprises 0.05 to 0.25 percent of Ti,0.05 to 0.25 percent of V,0.10 to 0.30 percent of Ce,0.10 to 0.30 percent of La,0.05 to 0.25 percent of Cr,0.05 to 0.25 percent of Mo and 0.10 to 0.50 percent of total mass percent of the additive element X.
5. A method of producing a wire rod according to any one of claims 1 to 4, characterized by the steps of:
1) Vacuum melting
Proportioning the components according to any one of the wires of claims 1-2, smelting in vacuum with the vacuum degree less than or equal to 30pa, and casting to obtain cast ingots;
2) Homogenizing annealing
Forging an ingot into a blank, and hot-rolling to obtain a wire rod after hot-rolling; homogenizing and annealing the wire rod at 900-1050 ℃ for 1-3 hours, and rapidly cooling the wire rod after discharging from a furnace to obtain a wire rod blank;
3) Drawing
Homogenizing and annealing the wire blank, and drawing the wire blank into a wire;
4) Recrystallization annealing
Carrying out first recrystallization annealing on the wire; and drawing to obtain filaments, carrying out secondary recrystallization annealing on the filaments, wherein the temperature of the secondary recrystallization annealing is 850-1000 ℃, the time is 3-5 minutes, and rapidly cooling to room temperature, and the cooling speed is more than or equal to 30 ℃/s.
6. The method according to claim 5, wherein: the diameter of the wire rod in the step 2) is 8.0-12.0 mm.
7. The method according to claim 5, wherein: the diameter of the wire in the step 3) is 3.0-5.0 mm.
8. The method according to claim 5, wherein: the diameter of the filaments in the step 4) is 0.8-1.5 mm.
9. The method according to claim 5, wherein: and 4) the rapid cooling adopts water cooling.
10. Use of an alloy according to any one of claims 1-2 for the manufacture of a filter screen.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311582827.3A CN117626056A (en) | 2023-11-24 | 2023-11-24 | High-strength pure nickel wire and preparation method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202311582827.3A CN117626056A (en) | 2023-11-24 | 2023-11-24 | High-strength pure nickel wire and preparation method thereof |
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| Publication Number | Publication Date |
|---|---|
| CN117626056A true CN117626056A (en) | 2024-03-01 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202311582827.3A Pending CN117626056A (en) | 2023-11-24 | 2023-11-24 | High-strength pure nickel wire and preparation method thereof |
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| Country | Link |
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| CN (1) | CN117626056A (en) |
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- 2023-11-24 CN CN202311582827.3A patent/CN117626056A/en active Pending
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