CN113278844A - High-strength high-elasticity copper-titanium alloy and manufacturing method thereof - Google Patents
High-strength high-elasticity copper-titanium alloy and manufacturing method thereof Download PDFInfo
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- IUYOGGFTLHZHEG-UHFFFAOYSA-N copper titanium Chemical compound [Ti].[Cu] IUYOGGFTLHZHEG-UHFFFAOYSA-N 0.000 title claims abstract description 39
- 229910001069 Ti alloy Inorganic materials 0.000 title claims abstract description 38
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 16
- 238000003723 Smelting Methods 0.000 claims abstract description 21
- 239000010949 copper Substances 0.000 claims abstract description 17
- 229910045601 alloy Inorganic materials 0.000 claims abstract description 15
- 239000000956 alloy Substances 0.000 claims abstract description 15
- 238000007670 refining Methods 0.000 claims abstract description 12
- 229910052746 lanthanum Inorganic materials 0.000 claims abstract description 11
- 239000010936 titanium Substances 0.000 claims abstract description 11
- 229910052727 yttrium Inorganic materials 0.000 claims abstract description 11
- 239000012535 impurity Substances 0.000 claims abstract description 10
- RTAQQCXQSZGOHL-UHFFFAOYSA-N Titanium Chemical compound [Ti] RTAQQCXQSZGOHL-UHFFFAOYSA-N 0.000 claims abstract description 9
- 229910052802 copper Inorganic materials 0.000 claims abstract description 9
- 238000000034 method Methods 0.000 claims abstract description 9
- 229910052719 titanium Inorganic materials 0.000 claims abstract description 9
- 229910052759 nickel Inorganic materials 0.000 claims abstract description 8
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 3
- 238000005097 cold rolling Methods 0.000 claims description 16
- 239000000243 solution Substances 0.000 claims description 14
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 12
- 238000005266 casting Methods 0.000 claims description 11
- 238000005098 hot rolling Methods 0.000 claims description 11
- 239000006104 solid solution Substances 0.000 claims description 11
- 238000010438 heat treatment Methods 0.000 claims description 10
- 238000005498 polishing Methods 0.000 claims description 10
- 230000032683 aging Effects 0.000 claims description 7
- 239000000463 material Substances 0.000 claims description 6
- 238000005096 rolling process Methods 0.000 claims description 6
- 238000004140 cleaning Methods 0.000 claims description 5
- 238000000265 homogenisation Methods 0.000 claims description 5
- 230000006698 induction Effects 0.000 claims description 5
- 239000007788 liquid Substances 0.000 claims description 5
- 238000002844 melting Methods 0.000 claims description 5
- 230000008018 melting Effects 0.000 claims description 5
- 239000002994 raw material Substances 0.000 claims description 5
- 238000010079 rubber tapping Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 3
- 230000035882 stress Effects 0.000 claims description 3
- 238000000137 annealing Methods 0.000 claims description 2
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 abstract description 4
- 230000009286 beneficial effect Effects 0.000 abstract description 3
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 abstract description 2
- 239000007789 gas Substances 0.000 abstract description 2
- 239000001257 hydrogen Substances 0.000 abstract description 2
- 229910052739 hydrogen Inorganic materials 0.000 abstract description 2
- 125000004435 hydrogen atom Chemical class [H]* 0.000 abstract description 2
- 229910052751 metal Inorganic materials 0.000 abstract description 2
- 239000002184 metal Substances 0.000 abstract description 2
- 229910052757 nitrogen Inorganic materials 0.000 abstract description 2
- 239000001301 oxygen Substances 0.000 abstract description 2
- 229910052760 oxygen Inorganic materials 0.000 abstract description 2
- 238000000746 purification Methods 0.000 abstract description 2
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 239000013589 supplement Substances 0.000 description 3
- DMFGNRRURHSENX-UHFFFAOYSA-N beryllium copper Chemical compound [Be].[Cu] DMFGNRRURHSENX-UHFFFAOYSA-N 0.000 description 2
- 238000011031 large-scale manufacturing process Methods 0.000 description 2
- 229910017945 Cu—Ti Inorganic materials 0.000 description 1
- 230000000711 cancerogenic effect Effects 0.000 description 1
- 231100000315 carcinogenic Toxicity 0.000 description 1
- 238000004891 communication Methods 0.000 description 1
- QRUFSERZYBWAOP-UHFFFAOYSA-N copper titanium Chemical compound [Ti].[Ti].[Cu] QRUFSERZYBWAOP-UHFFFAOYSA-N 0.000 description 1
- 230000007797 corrosion Effects 0.000 description 1
- 238000005260 corrosion Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 238000010586 diagram Methods 0.000 description 1
- 238000005242 forging Methods 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 239000002245 particle Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
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- 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
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
-
- C—CHEMISTRY; METALLURGY
- C21—METALLURGY OF IRON
- C21D—MODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
- C21D9/00—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor
- C21D9/52—Heat treatment, e.g. annealing, hardening, quenching or tempering, adapted for particular articles; Furnaces therefor for wires; for strips ; for rods of unlimited length
-
- 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
- C22C1/02—Making non-ferrous alloys by melting
-
- C—CHEMISTRY; METALLURGY
- C22—METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
- C22F—CHANGING THE PHYSICAL STRUCTURE OF NON-FERROUS METALS AND NON-FERROUS ALLOYS
- C22F1/00—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working
- C22F1/08—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working of copper or alloys based thereon
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/221—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by cold-rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/22—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length
- B21B2001/225—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling plates, strips, bands or sheets of indefinite length by hot-rolling
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
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- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Conductive Materials (AREA)
Abstract
The invention discloses a high-strength high-elasticity copper-titanium alloy and a manufacturing method thereof, wherein the copper-titanium alloy comprises the following components in percentage by mass: 2.3 to 3.8 percent of Ti2.3 percent of Ni, less than or equal to 0.3 percent of Fe, less than or equal to 0.1 percent of Y, less than or equal to 0.1 percent of La, the balance of Cu and inevitable impurity elements, and the balance of Cu and Ti, wherein the Cu and Ti are more than or equal to 99.3 percent. The method has the beneficial effects that a vacuum high-temperature smelting environment is provided through vacuum smelting, so that the active titanium element in the alloy is strictly controlled, the contents of hydrogen, oxygen, nitrogen, impurities and the like in the prepared copper-titanium alloy are low, the purification degree of the copper-titanium alloy is high, gas, impurities and non-metallic impurities of copper and titanium metal are removed in the refining process, and the quality of the prepared copper-titanium alloy is improved.
Description
Technical Field
The invention relates to the technical field of copper-titanium alloy, in particular to high-strength high-elasticity copper-titanium alloy and a manufacturing method thereof.
Background
The high-strength elastic copper alloy mainly refers to conductive elastic copper alloy with tensile strength of over 1000Mpa, is one of key materials of conductive elastic components, and is widely applied to the fields of electronics and electricians, communication navigation, automobile industry, ocean engineering and the like. Beryllium copper has high strength and elastic limit, has the advantages of excellent corrosion resistance, wear resistance, electric conduction, heat conduction and the like, is an important high-strength high-elasticity copper alloy, but is a strong carcinogenic element when being volatilized during smelting and casting, has great harm to human health, and has high price, poor stress relaxation resistance and large deformation after aging.
Titanium copper has very high strength by controlling the generation of nano-scale precipitated phase particles, has excellent elasticity, conductivity and wear resistance, and can be used for manufacturing various elastic conductive elements instead of beryllium copper. The copper-titanium alloy strip generally adopts the process route of smelting, round billet casting, forging cogging, hot rolling, cold rolling, solid solution, aging and rolling, the production process has long flow and low yield, is not beneficial to rapid large-scale production, and puts higher requirements on the strength and the formability of the high-elasticity copper-titanium alloy along with the development of components.
Disclosure of Invention
The invention aims to solve the problems and designs a high-strength high-elasticity copper-titanium alloy and a manufacturing method thereof.
The technical scheme of the invention is that the high-strength high-elasticity copper-titanium alloy comprises the following components in percentage by mass: 2.3 to 3.8 percent of Ti2, less than or equal to 0.3 percent of Ni, less than or equal to 0.3 percent of Fe, less than or equal to 0.1 percent of Y, less than or equal to 0.1 percent of La, the balance of Cu and inevitable impurity elements, and the ratio of Cu to Ti is more than or equal to 99.3 percent.
A manufacturing method of a high-strength high-elasticity copper-titanium alloy comprises the following steps:
(1) vacuum smelting: putting dry material alloys such as high-purity copper, high-purity titanium, electrolytic nickel and the like into a vacuum induction furnace according to a proportion, firstly putting large raw materials, loosening up and tightening down to avoid bridging, then vacuumizing to below 20Pa, and transmitting power for smelting, wherein the smelting temperature is 1180-1280 ℃, refining is carried out after melting down for 2-5 minutes, and then proper amount of Y and La are added, and the total refining time is not less than 10 min;
(2) pouring into a slab: casting the smelted liquid alloy into a slab under the atmosphere protection condition, wherein the tapping temperature is 1150-1220 ℃, the casting temperature is controlled to be not lower than 1180 ℃ when the slab exceeds 3t, and the casting temperature is controlled to be not higher than 1170 ℃ when the slab is within 2 t;
(3) hot rolling of strip: cleaning and polishing the cast slab, placing the slab into a heating furnace at 830-860 ℃ for heat preservation for more than 10 hours for homogenization treatment, and then carrying out hot rolling at 740-860 ℃ to obtain a plate with the thickness of 3-10mm, wherein the total deformation is not less than 93 percent, and the single deformation is not less than 10 percent.
(4) Cold rolling: the hot rolled strip is subjected to solid solution at the temperature of 800-900 ℃ for 1-3h, and is subjected to surface polishing treatment and then is subjected to cold rolling until the thickness is within 0.5 mm;
(5) solid solution: carrying out solution treatment on the cold-rolled strip in a heating furnace at the temperature of 800-900 ℃ for 60-180 s;
(6) aging: preserving the heat of the strip subjected to the solution treatment for 1-20h at the temperature of 400-500 ℃;
(7) finish rolling: and cold rolling the aged strip into a strip with a required specification.
As a further supplement to the invention, the specification of the cast slab in the step (2) is (200-850 mm) × (160-260) mm.
As a further supplement to the invention, the specification of the rolled strip in the step (3) is (200-850 mm) × (0.05-0.2) mm, and stress relief annealing can be carried out according to requirements.
As a further supplement to the invention, the copper-titanium alloy strip has the yield strength of 870-1200 MPa, the tensile strength of 950-1300 MPa, the elongation of 10-22%, the electrical conductivity of 12-18% IACS, the Young modulus of 110-140 kN and the hardness of 290-360 HV.
The high-strength high-elasticity copper-titanium alloy has the beneficial effects that the yield strength is 870-1200 Mpa, the tensile strength is 950-1300 MPa, the elongation is 10-22%, the conductivity is 12-18% IACS, the Young modulus is 110-140 kN, and the hardness is 290-360 HV, compared with the existing C1990 titanium copper, the high-strength high-elasticity copper-titanium alloy provided by the invention has higher strength, higher elongation and better formability, the conductivity is equivalent to that of the C1990 titanium-copper titanium alloy, and a vacuum high-temperature smelting environment is provided through vacuum smelting, so that the active titanium element in the alloy is strictly controlled, the contents of hydrogen, oxygen, nitrogen, inclusions and the like in the prepared copper-titanium alloy are low, the purification degree of the copper-titanium alloy is high, gas, impurities and nonmetallic inclusions are removed in the refining process of copper and titanium metal, and the quality of the prepared copper-titanium alloy is improved, and the problems of long production flow path, long production cost, high production cost and the, The yield is low, the process for producing the copper-titanium alloy strip is shorter, the efficiency is higher, and the large-scale production is facilitated.
Drawings
FIG. 1 is a flow chart of the preparation of the copper-titanium alloy according to the present invention;
FIG. 2 is a structural diagram of a high-strength high-elasticity copper-titanium alloy according to the present invention;
FIG. 3 is a graph comparing the strength of the high-strength high-elasticity Cu-Ti alloy of the present invention and that of the prior art alloy.
Detailed Description
First, the present invention is made in view of the above problems, and provides a high strength and high elasticity copper-titanium alloy and a method for manufacturing the same, because the properties of the existing C1990 copper alloy, such as strength, are gradually unable to meet the requirements of the industry.
The technical solution in the embodiment of the present invention will be clearly and completely described below with reference to the accompanying drawings in the embodiment of the present invention, as shown in fig. 1:
example 1
The high-strength high-elasticity copper-titanium alloy comprises the following elements in percentage by mass: 2.8 percent of Ti2, 0.03 percent of Ni0, 0.15 percent of Fe0, 0.03 percent of Y, 0.02 percent of La, and the balance of Cu and inevitable impurity elements.
(1) Vacuum smelting: putting dry material alloys such as high-purity copper, high-purity titanium, electrolytic nickel and the like into a vacuum induction furnace according to a proportion, firstly putting a large raw material, loosening the upper part and the lower part to avoid bridging, then vacuumizing to 20Pa, and then performing electric smelting at the smelting temperature of 1190 ℃, refining for 3 minutes after melting down, and then adding a proper amount of Y and La, wherein the total refining time is 11 minutes;
(2) pouring into a slab: casting the smelted liquid alloy into a plate blank under the atmosphere protection condition, wherein the tapping temperature is 1150 ℃, and the specification of the plate blank is 600mm multiplied by 180 mm;
(3) hot rolling of strip: cleaning and polishing the cast slab, putting the slab into a 880 ℃ heating furnace, preserving heat for 10 hours, carrying out homogenization treatment, and then carrying out hot rolling at 740-860 ℃ to obtain a plate with the thickness of 3 mm.
(4) Cold rolling: the hot rolled strip is subjected to solid solution for 1h at 900 ℃, and is subjected to surface polishing treatment and then is subjected to cold rolling until the thickness is 0.3mm +/-0.1 mm;
(5) solid solution: keeping the temperature of the cold-rolled strip in a heating furnace at 860 ℃ for 60s for solution treatment;
(6) aging: preserving the heat of the strip subjected to the solution treatment for 5 hours at 400 ℃;
(7) finish rolling: cold rolling the aged strip to 0.08mm +/-0.02 mm;
the high-strength high-elasticity copper-titanium alloy has the yield strength of 910MPa, the tensile strength of 1030MPa, the elongation of 16 percent, the electric conductivity of 17 percent IACS, the Young modulus of 130kN and the hardness of 310 HV.
Example 2
The high-strength high-elasticity copper-titanium alloy comprises the following elements in percentage by mass: 3.0 percent of Ti3, 0.04 percent of Ni0, 0.18 percent of Fe0, 0.03 percent of Y, 0.03 percent of La, and the balance of Cu and inevitable impurity elements.
(1) Vacuum smelting: putting dry material alloys such as high-purity copper, high-purity titanium, electrolytic nickel and the like into a vacuum induction furnace according to a proportion, firstly putting a large raw material, loosening up and down to avoid bridging, then vacuumizing to 20Pa, and then performing electric smelting at a smelting temperature of 1230 ℃, refining for 4 minutes after melting down, and then adding a proper amount of Y and La, wherein the total refining time is 13 minutes;
(2) pouring into a slab: casting the smelted liquid alloy into a plate blank under the atmosphere protection condition, wherein the tapping temperature is 1180 ℃, and the plate blank specification is 750 multiplied by 200 mm;
(3) hot rolling of strip: cleaning and polishing the cast slab, putting the slab into a 880 ℃ heating furnace, preserving heat for 14h, carrying out homogenization treatment, and then carrying out hot rolling at 760-860 ℃ to obtain a plate with the thickness of 4 mm.
(4) Cold rolling: the hot rolled strip is subjected to solid solution for 1h at 880 ℃, and is subjected to surface polishing treatment and then is subjected to cold rolling until the thickness is 0.4mm +/-0.1 mm;
(5) solid solution: keeping the temperature of the cold-rolled strip in a heating furnace at 880 ℃ for 90s for solution treatment;
(6) aging: preserving the heat of the strip subjected to the solution treatment for 6 hours at 480 ℃;
(7) finish rolling: cold rolling the aged strip to 0.1mm +/-0.02 mm;
the high-strength high-elasticity copper-titanium alloy has the yield strength of 970MPa, the tensile strength of 1100MPa, the elongation of 14 percent, the electric conductivity of 15 percent IACS, the Young modulus of 128kN and the hardness of 320 HV.
Example 3
The high-strength high-elasticity copper-titanium alloy comprises the following elements in percentage by mass: 3.3 percent of Ti3%, 0.16 percent of Ni0.21 percent of Fe0.04 percent of Y, 0.03 percent of La, and the balance of Cu and inevitable impurity elements.
(1) Vacuum smelting: putting dry material alloys such as high-purity copper, high-purity titanium, electrolytic nickel and the like into a vacuum induction furnace according to a proportion, firstly putting a large raw material, loosening the upper part and the lower part to avoid bridging, then vacuumizing to 20Pa, and then performing electric smelting at the smelting temperature of 1240 ℃, after melting down, refining for 4 minutes, adding a proper amount of Y and La, wherein the total refining time is 14 minutes;
(2) pouring into a slab: casting the smelted liquid alloy into a plate blank under the atmosphere protection condition, wherein the tapping temperature is 1190 ℃, and the plate blank specification is 750 multiplied by 200 mm;
(3) hot rolling of strip: cleaning and polishing the cast slab, putting the slab into a heating furnace at 900 ℃ for heat preservation for 14h for homogenization treatment, and then hot rolling the slab at 780-900 ℃ to a plate with the thickness of 5 mm.
(4) Cold rolling: the hot rolled strip is subjected to solid solution for 1.5h at 900 ℃, and is subjected to surface polishing treatment and then is subjected to cold rolling until the thickness is 0.45mm +/-0.1 mm;
(5) solid solution: keeping the temperature of the cold-rolled strip at 900 ℃ for 120s in a heating furnace for solution treatment;
(6) aging: preserving the heat of the strip subjected to the solution treatment for 8 hours at 500 ℃;
(7) finish rolling: cold rolling the aged strip to 0.15mm +/-0.02 mm;
the high-strength high-elasticity copper-titanium alloy has the yield strength of 1160MPa, the tensile strength of 1250MPa, the elongation of 10 percent, the conductivity of 12 percent IACS, the Young modulus of 126kN and the hardness of 350 HV.
As can be easily found from the graphs in FIGS. 2 and 3, the copper-titanium alloy provided by the invention has a better structure, obviously stronger strength than that of the C1990 alloy, very obvious technical advantages and very high practical value.
The technical solutions described above only represent the preferred technical solutions of the present invention, and some possible modifications to some parts of the technical solutions by those skilled in the art all represent the principles of the present invention, and fall within the protection scope of the present invention.
Claims (5)
1. The high-strength high-elasticity copper-titanium alloy is characterized by comprising the following components in percentage by mass: 2.3 to 3.8 percent of Ti2, less than or equal to 0.3 percent of Ni, less than or equal to 0.3 percent of Fe, less than or equal to 0.1 percent of Y, less than or equal to 0.1 percent of La, the balance of Cu and inevitable impurity elements, and the ratio of Cu to Ti is more than or equal to 99.3 percent.
2. The manufacturing method of the high-strength high-elasticity copper-titanium alloy is characterized by comprising the following steps of:
(1) vacuum smelting: putting dry material alloys such as high-purity copper, high-purity titanium, electrolytic nickel and the like into a vacuum induction furnace according to a proportion, firstly putting large raw materials, loosening up and tightening down to avoid bridging, then vacuumizing to below 20Pa, and transmitting power for smelting, wherein the smelting temperature is 1180-1280 ℃, refining is carried out after melting down for 2-5 minutes, and then proper amount of Y and La are added, and the total refining time is not less than 10 min;
(2) pouring into a slab: casting the smelted liquid alloy into a slab under the atmosphere protection condition, wherein the tapping temperature is 1150-1220 ℃, the casting temperature is controlled to be not lower than 1180 ℃ when the slab exceeds 3t, and the casting temperature is controlled to be not higher than 1170 ℃ when the slab is within 2 t;
(3) hot rolling of strip: cleaning and polishing the cast slab, placing the slab into a heating furnace at 830-860 ℃ for heat preservation for more than 10 hours for homogenization treatment, and then carrying out hot rolling at 740-860 ℃ to obtain a plate with the thickness of 3-10mm, wherein the total deformation is not less than 93 percent, and the single deformation is not less than 10 percent.
(4) Cold rolling: the hot rolled strip is subjected to solid solution at the temperature of 800-900 ℃ for 1-3h, and is subjected to surface polishing treatment and then is subjected to cold rolling until the thickness is within 0.5 mm;
(5) solid solution: carrying out solution treatment on the cold-rolled strip in a heating furnace at the temperature of 800-900 ℃ for 60-180 s;
(6) aging: preserving the heat of the strip subjected to the solution treatment for 1-20h at the temperature of 400-500 ℃;
(7) finish rolling: and cold rolling the aged strip into a strip with a required specification.
3. The method for manufacturing a high-strength high-elasticity copper-titanium alloy according to claim 2, wherein the specification of the cast slab in the step (2) is (200-850 mm) × (160-260) mm.
4. The method for manufacturing a high-strength high-elasticity copper-titanium alloy according to claim 2, wherein the rolled strip in the step (3) has a specification of (200-850 mm) × (0.05-0.2) mm, and is subjected to stress relief annealing according to requirements.
5. The method for manufacturing a high-strength high-elasticity copper-titanium alloy according to claim 2, wherein the copper-titanium alloy strip has a yield strength of 870-1200 MPa, a tensile strength of 950-1300 MPa, an elongation of 10-22%, an electrical conductivity of 12-18% IACS, a Young's modulus of 110-140 kN, and a hardness of 290-360 HV.
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| CN113802026A (en) * | 2021-09-18 | 2021-12-17 | 宁波博威合金板带有限公司 | Titanium bronze strip and preparation method thereof |
| CN114150123A (en) * | 2021-11-24 | 2022-03-08 | 昆明冶金研究院有限公司北京分公司 | Method for effectively improving strength and conductivity of alloy |
| CN116607046A (en) * | 2023-04-27 | 2023-08-18 | 合肥工业大学 | Cu-Y-Ti copper-based composite material for electric vacuum device and preparation method thereof |
| CN116970836A (en) * | 2023-07-27 | 2023-10-31 | 中国兵器科学研究院宁波分院 | High-strength tellurium copper alloy material and preparation method thereof |
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| CN116607046B (en) * | 2023-04-27 | 2024-09-24 | 合肥工业大学 | Cu-Y-Ti copper-based composite material for electric vacuum device and preparation method thereof |
| CN116970836A (en) * | 2023-07-27 | 2023-10-31 | 中国兵器科学研究院宁波分院 | High-strength tellurium copper alloy material and preparation method thereof |
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Denomination of invention: A high-strength and high elastic copper titanium alloy and its manufacturing method Granted publication date: 20220527 Pledgee: Bank of China Limited by Share Ltd. Cangzhou branch Pledgor: Guogong Hengchang New Materials Cangzhou Co.,Ltd. Registration number: Y2024980014856 |