CN116555623A - Production and processing technology of CuNi electrothermal alloy plate and strip - Google Patents
Production and processing technology of CuNi electrothermal alloy plate and strip Download PDFInfo
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- CN116555623A CN116555623A CN202310351338.0A CN202310351338A CN116555623A CN 116555623 A CN116555623 A CN 116555623A CN 202310351338 A CN202310351338 A CN 202310351338A CN 116555623 A CN116555623 A CN 116555623A
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- 239000000956 alloy Substances 0.000 title claims abstract description 88
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 86
- 229910003336 CuNi Inorganic materials 0.000 title claims abstract description 71
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 18
- 238000005516 engineering process Methods 0.000 title claims abstract description 11
- 239000000463 material Substances 0.000 claims abstract description 72
- 238000003723 Smelting Methods 0.000 claims abstract description 50
- 238000000137 annealing Methods 0.000 claims abstract description 44
- 238000005498 polishing Methods 0.000 claims abstract description 31
- 238000005554 pickling Methods 0.000 claims abstract description 30
- 238000005096 rolling process Methods 0.000 claims abstract description 24
- 239000002994 raw material Substances 0.000 claims abstract description 17
- 238000005097 cold rolling Methods 0.000 claims abstract description 11
- 238000004381 surface treatment Methods 0.000 claims abstract description 7
- 238000003754 machining Methods 0.000 claims abstract description 6
- 238000005260 corrosion Methods 0.000 claims description 39
- 230000007797 corrosion Effects 0.000 claims description 39
- 239000007788 liquid Substances 0.000 claims description 38
- 230000005764 inhibitory process Effects 0.000 claims description 35
- 238000005507 spraying Methods 0.000 claims description 35
- 238000005728 strengthening Methods 0.000 claims description 35
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 28
- 238000001035 drying Methods 0.000 claims description 28
- PXHVJJICTQNCMI-UHFFFAOYSA-N nickel Substances [Ni] PXHVJJICTQNCMI-UHFFFAOYSA-N 0.000 claims description 27
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 27
- 238000001816 cooling Methods 0.000 claims description 26
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 24
- 238000010438 heat treatment Methods 0.000 claims description 22
- 238000004321 preservation Methods 0.000 claims description 20
- 238000005406 washing Methods 0.000 claims description 20
- 238000000034 method Methods 0.000 claims description 16
- GRYLNZFGIOXLOG-UHFFFAOYSA-N Nitric acid Chemical compound O[N+]([O-])=O GRYLNZFGIOXLOG-UHFFFAOYSA-N 0.000 claims description 14
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 14
- 229910017604 nitric acid Inorganic materials 0.000 claims description 14
- 229910000570 Cupronickel Inorganic materials 0.000 claims description 12
- QAOWNCQODCNURD-UHFFFAOYSA-N Sulfuric acid Chemical compound OS(O)(=O)=O QAOWNCQODCNURD-UHFFFAOYSA-N 0.000 claims description 12
- YOCUPQPZWBBYIX-UHFFFAOYSA-N copper nickel Chemical compound [Ni].[Cu] YOCUPQPZWBBYIX-UHFFFAOYSA-N 0.000 claims description 12
- NBIIXXVUZAFLBC-UHFFFAOYSA-K phosphate Chemical compound [O-]P([O-])([O-])=O NBIIXXVUZAFLBC-UHFFFAOYSA-K 0.000 claims description 12
- 239000010452 phosphate Substances 0.000 claims description 12
- 229910019142 PO4 Inorganic materials 0.000 claims description 11
- 229910021538 borax Inorganic materials 0.000 claims description 11
- 235000010339 sodium tetraborate Nutrition 0.000 claims description 11
- BSVBQGMMJUBVOD-UHFFFAOYSA-N trisodium borate Chemical compound [Na+].[Na+].[Na+].[O-]B([O-])[O-] BSVBQGMMJUBVOD-UHFFFAOYSA-N 0.000 claims description 11
- VILCJCGEZXAXTO-UHFFFAOYSA-N 2,2,2-tetramine Chemical compound NCCNCCNCCN VILCJCGEZXAXTO-UHFFFAOYSA-N 0.000 claims description 10
- PWHULOQIROXLJO-UHFFFAOYSA-N Manganese Chemical compound [Mn] PWHULOQIROXLJO-UHFFFAOYSA-N 0.000 claims description 10
- -1 alkyl imidazoline quaternary ammonium salt Chemical class 0.000 claims description 10
- 239000003610 charcoal Substances 0.000 claims description 10
- 229910052802 copper Inorganic materials 0.000 claims description 10
- 239000010949 copper Substances 0.000 claims description 10
- 229910052748 manganese Inorganic materials 0.000 claims description 10
- 239000011572 manganese Substances 0.000 claims description 10
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- 229960001124 trientine Drugs 0.000 claims description 10
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims description 9
- 229910052759 nickel Inorganic materials 0.000 claims description 9
- 238000001514 detection method Methods 0.000 claims description 7
- UFHFLCQGNIYNRP-UHFFFAOYSA-N Hydrogen Chemical compound [H][H] UFHFLCQGNIYNRP-UHFFFAOYSA-N 0.000 claims description 6
- 239000002253 acid Substances 0.000 claims description 6
- 229910052739 hydrogen Inorganic materials 0.000 claims description 6
- 239000001257 hydrogen Substances 0.000 claims description 6
- 238000002156 mixing Methods 0.000 claims description 6
- 239000011521 glass Substances 0.000 claims description 5
- 230000001681 protective effect Effects 0.000 claims description 5
- 238000005070 sampling Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 4
- 238000005520 cutting process Methods 0.000 abstract 1
- 230000000052 comparative effect Effects 0.000 description 15
- 239000000243 solution Substances 0.000 description 15
- 230000001965 increasing effect Effects 0.000 description 5
- 239000005457 ice water Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 3
- 239000012535 impurity Substances 0.000 description 3
- 238000002360 preparation method Methods 0.000 description 3
- 230000003014 reinforcing effect Effects 0.000 description 3
- 230000001133 acceleration Effects 0.000 description 2
- 239000007853 buffer solution Substances 0.000 description 2
- 230000002708 enhancing effect Effects 0.000 description 2
- 238000007493 shaping process Methods 0.000 description 2
- 238000005299 abrasion Methods 0.000 description 1
- 238000000889 atomisation Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000015556 catabolic process Effects 0.000 description 1
- 238000005336 cracking Methods 0.000 description 1
- 238000005261 decarburization Methods 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 238000005265 energy consumption Methods 0.000 description 1
- 230000009931 harmful effect Effects 0.000 description 1
- 238000005098 hot rolling Methods 0.000 description 1
- 238000007689 inspection Methods 0.000 description 1
- WPBNNNQJVZRUHP-UHFFFAOYSA-L manganese(2+);methyl n-[[2-(methoxycarbonylcarbamothioylamino)phenyl]carbamothioyl]carbamate;n-[2-(sulfidocarbothioylamino)ethyl]carbamodithioate Chemical compound [Mn+2].[S-]C(=S)NCCNC([S-])=S.COC(=O)NC(=S)NC1=CC=CC=C1NC(=S)NC(=O)OC WPBNNNQJVZRUHP-UHFFFAOYSA-L 0.000 description 1
- 229910001092 metal group alloy Inorganic materials 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000003647 oxidation Effects 0.000 description 1
- 238000007254 oxidation reaction Methods 0.000 description 1
- 230000000630 rising effect Effects 0.000 description 1
- 229910000162 sodium phosphate Inorganic materials 0.000 description 1
- 238000013268 sustained release Methods 0.000 description 1
- 239000012730 sustained-release form Substances 0.000 description 1
Classifications
-
- 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
- C22C9/06—Alloys based on copper with nickel or cobalt as the next major constituent
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B3/00—Rolling materials of special alloys so far as the composition of the alloy requires or permits special rolling methods or sequences ; Rolling of aluminium, copper, zinc or other non-ferrous metals
-
- 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
- C22F1/02—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working in inert or controlled atmosphere or vacuum
-
- 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
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
-
- 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
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/10—Other heavy metals
-
- 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
- B21B1/38—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 sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
-
- 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
- Y02B—CLIMATE CHANGE MITIGATION TECHNOLOGIES RELATED TO BUILDINGS, e.g. HOUSING, HOUSE APPLIANCES OR RELATED END-USER APPLICATIONS
- Y02B30/00—Energy efficient heating, ventilation or air conditioning [HVAC]
Landscapes
- Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Materials Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Physics & Mathematics (AREA)
- Thermal Sciences (AREA)
- Crystallography & Structural Chemistry (AREA)
- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a production and processing technology of a CuNi electrothermal alloy plate and strip, which comprises the steps of proportioning all alloy elements according to the component requirements of the CuNi electrothermal alloy plate and strip; adding the raw materials into a smelting furnace according to the proportion and sequence for smelting, and performing flat drawing and cold rolling; annealing the rolled plate for the first time, and physically polishing and pickling the annealed plate; cutting and finish rolling the semi-finished plate strip to obtain a finish rolled plate strip; and (5) carrying out secondary annealing and polishing on the finish rolling plate belt to obtain the finish machining plate belt. The CuNi electrothermal alloy plate strip disclosed by the invention is subjected to annealing and surface treatment, and raw materials are added in a specific sequence, so that the material utilization rate is improved, the production cost is reduced, and the quality of the CuNi electrothermal alloy plate strip is ensured.
Description
Technical Field
The invention relates to the technical field of nonferrous metal alloys, in particular to a production and processing technology of a CuNi electrothermal alloy plate strip.
Background
Electrothermal alloys are alloy materials used to make electrothermal elements. When an electric current is passed through the alloy element, a joule effect is created, converting electrical energy into thermal energy. The CuNi electrothermal alloy can be used for preparing various low-temperature heating elements because of higher resistance and better resistance temperature coefficient, can be well applied to environments of dry air and hydrogen-containing atmosphere, and is mainly used for low-temperature heaters of household, automobiles and the like, such as dryers, electric blankets, local defrosters, automobile seat heating pads and the like.
At present, most manufacturers prepare a CuNi electrothermal alloy plate strip by adopting a vacuum or non-vacuum smelting process to prepare an ingot, and part of manufacturers carry out electroslag remelting on the smelted ingot, then use hot rolling cogging, and prepare and process the finished plate strip through multiple annealing cold rolling and other processes. The plate strip prepared by the method has higher quality, but the preparation process is longer, the cost is higher, sawing and milling of the material can be carried out in each pass before cold rolling, and the utilization rate of the material is greatly reduced, so that the production and processing technology of the CuNi electrothermal alloy plate strip is needed to solve the technical problems.
Disclosure of Invention
In order to solve the technical problems, the invention provides a production and processing technology of a CuNi electrothermal alloy plate strip.
The technical scheme of the invention is as follows: a production and processing technology of a CuNi electrothermal alloy plate strip comprises the following steps:
s1, proportioning:
proportioning all alloy elements according to the component requirements of the CuNi electrothermal alloy plate and strip, and selecting and preparing corresponding raw materials; wherein, the CuNi electrothermal alloy plate strip Ni: 1-23%, mn:0 to 0.5 percent, cu: the balance;
s2 smelting and parallel guiding:
adding the raw materials into a smelting furnace one by one according to the proportion and the sequence, smelting, and carrying out flat drawing and cold rolling in sequence to obtain a rolled plate;
s3, primary annealing and surface treatment:
carrying out primary annealing treatment on the rolled plate, wherein the annealing temperature is 800-900 ℃, the heat preservation time is 3h, cooling along with a furnace, and carrying out physical polishing and acid washing on the annealed plate to obtain a semi-finished plate belt;
s4, slitting and finish rolling:
slitting the semi-finished plate strip, and performing finish rolling on the slit semi-finished plate strip to obtain a finish rolled plate strip;
s5, secondary annealing and polishing:
carrying out secondary annealing treatment on the finish rolling plate belt, wherein the annealing temperature is 800-900 ℃, the heat preservation time is 3h, cooling along with a furnace, and polishing the annealed finish rolling plate belt to obtain a finish machining plate belt;
s6 detection package
And detecting the finished plate belt, and packaging after the finished plate belt is qualified.
Description: the raw materials are added in the sequence for smelting, so that the loss of electrolytic manganese can be reduced, and the utilization rate of the materials is improved; the sheet material is annealed and insulated so as to remove stress of the sheet material and ensure the shaping processing capability of the sheet material; the plate is subjected to physical polishing, acid washing and polishing to remove impurities on the surface of the plate strip, so that the quality of the manufactured plate strip is ensured.
Further, in the step S2, before smelting, the power frequency smelting furnace is started, 30KW is lifted every 4 hours until the power is 150KW, and charcoal is used for covering during the period, so as to ensure the furnace temperature.
Description: after the power frequency smelting furnace is started, the power is gradually increased by adopting the lifting speed, so that the melting channel is ensured to be melted gradually, the power is prevented from being lifted too fast, the current is too high, the melting state of the material is uneven, and meanwhile, the breakdown of furnace lining material can be prevented.
Further, in the step S2, the heat preservation is continuously performed using charcoal and glass during the smelting.
Description: through using charcoal and glass to keep warm continually, prevent that air contact raw materials from producing harmful effect to the slab band quality in the smelting process to keep warm to the copper liquid.
Further, in the step S2, firstly, a nickel plate and an electrolytic copper plate are added into a smelting furnace according to a proportion, smelting is carried out at the temperature of 1200-1300 ℃ to obtain a copper-nickel material, sampling and detecting are carried out on the copper-nickel material, electrolytic manganese is added after the components are qualified, and then the smelting furnace is started for heat preservation for 1h after 30 min.
Description: the nickel plate, the electrolytic copper plate and the electrolytic manganese are added firstly, so that the utilization rate of the material is improved, and the loss of the electrolytic manganese in the smelting process is reduced; the quality of the manufactured alloy material is ensured by detecting the components of the copper-nickel material.
Further, in the step S2, the furnace temperature is set according to the melting point of the material before the leveling, and the traction rate, the traction stroke, the stop time, the backward time and the backward stroke are set according to the hardness and the fluidity of the material, so that the tractor is started to perform leveling.
Description: by setting various parameters before flat guiding, the smooth and flat surface of the flat-led plate is ensured, the defects of cracking, peeling and the like are avoided, and the quality of the finished plate and strip after subsequent processing is ensured.
Further, in the step S2, the cold rolling is performed by a two-roll cold rolling mill to obtain a plate, and the plate is rolled to obtain a rolled plate.
Description: by rolling the plate, the plate is stored and carried conveniently, and the annealing process is more convenient.
Further, in the step S3, hydrogen is used as a protective atmosphere for both the primary annealing and the secondary annealing.
Description: by using hydrogen as protective atmosphere during annealing, the phenomena of oxidation and decarburization of the plate are reduced, and the quality of the manufactured plate and strip is ensured.
Further, the pickling solution used in the pickling treatment in the step S3 comprises the following components in parts by mass: 10-15 parts of dilute phosphoric acid, 25-30 parts of dilute nitric acid, 5-10 parts of citric acid and 40-50 parts of water; wherein the mass fraction of the dilute phosphoric acid is 20%, and the mass fraction of the dilute nitric acid is 25%.
Description: the pickling solution prepared from dilute phosphoric acid, dilute nitric acid, citric acid and water in parts by weight is used for pickling the plate, so that impurities and oxides on the surface of the plate can be removed, and the quality of the plate and the strip is improved.
Further, the pickling comprises the following steps:
s1, adding 5-10% of sodium borate, 0.1-0.5% of phosphate, 0.2-0.4% of triethylene tetramine and 0.2-0.5% of alkyl imidazoline quaternary ammonium salt into 1L of water, and uniformly mixing to obtain corrosion inhibition strengthening liquid;
s2, carrying out heat treatment on the plate subjected to physical polishing, heating to 400-500 ℃ at a heating speed of 5-7 ℃/min, spraying corrosion inhibition strengthening liquid onto the surface of the plate after atomizing, accelerating at a spraying initial speed of 40-55 m/S and a spraying speed of 5-7 m/S, stopping spraying when the spraying speed reaches 80-85 m/S, then keeping the temperature for 35-50 min, adding the plate into the corrosion inhibition strengthening liquid at 80-95 ℃, taking out and standing for 40-55 min when the temperature of the plate reaches 200-250 ℃, naturally cooling to room temperature, and then cooling with water at-10 to-5 ℃ to obtain the cooled plate;
s3, washing the cooled plate material with dilute sulfuric acid with the mass fraction of 20%, washing with water, and then putting the plate material into a drying furnace for drying at the drying temperature of 100-150 ℃ to obtain a dried plate material;
s4, washing the dried plate material with pickling solution, and further drying at 100-150 ℃ to obtain a semi-finished plate belt.
Description: the corrosion inhibition reinforcing liquid prepared from sodium borate, phosphate, triethylene tetramine and alkyl imidazoline quaternary ammonium salt according to mass percent is used for treating the plate material, so that the corrosion of pickling solution to the plate material in the pickling process can be reduced; sodium borate and phosphate are matched, sodium borate can be used as a buffer solution, the polishing function of the phosphate is utilized, and the ionic effect of alkyl imidazoline quaternary ammonium salt is utilized, so that the bonding force between the slow-release strengthening solution and the surface of a plate is stronger, the phosphate can reduce the corrosion tendency, and the addition of triethylene tetramine can play the role of both promoters, so that the strength is improved, and the corrosion is reduced; the corrosion inhibition strengthening liquid is sprayed on the surface of the plate material uniformly by carrying out heat treatment on the plate material and spraying the corrosion inhibition strengthening liquid at different speeds, and the combination of the corrosion inhibition strengthening liquid and the plate material is firmer, so that the strength and the hardness of the plate material are improved, and the quality of a plate belt is improved; the plate is added into the corrosion inhibition strengthening liquid with specific temperature for preliminary cooling treatment, and the plate is cooled by ice water with specific temperature, so that the rapid change of temperature can be utilized, the structure of the surface of the plate is more uniform and compact, and the strength and hardness of the plate are further improved.
The beneficial effects of the invention are as follows:
(1) According to the invention, by adding the nickel plate, the electrolytic copper plate and the electrolytic manganese, the utilization rate of the material is improved, and the loss of the electrolytic manganese in the smelting process is reduced; the quality of the manufactured CuNi electrothermal alloy plate strip is ensured by detecting the components of the copper-nickel material.
(2) According to the invention, sodium borate is used as a buffer solution, the polishing function of phosphate, the ionic effect of alkyl imidazoline quaternary ammonium salt and triethylene tetramine are used as an accelerator, so that the bonding force between the slow-release strengthening solution and the surface of the plate is stronger, the strength is improved, and the corrosion is reduced; the corrosion inhibition strengthening liquid is sprayed and coated evenly when the plate is heated, so that the combination of the corrosion inhibition strengthening liquid and the plate is firmer, and the strength and the hardness of the plate are improved; the plate is added into the corrosion inhibition strengthening liquid with specific temperature and cooled by ice water, so that the structure of the surface of the plate is more uniform and compact, and the strength and hardness of the plate are further improved.
(3) The invention ensures that the melting channel is melted gradually by gradually increasing the power after the power frequency smelting furnace is started, and avoids that the power is increased too fast, so that the melting state of the material is uneven, thereby breaking through the furnace lining material.
(4) According to the invention, the sheet material is annealed and heat-preserved, so that stress is removed conveniently, and the shaping processing capability of the material is ensured; the quality of the manufactured CuNi electrothermal alloy plate strip is ensured by physically polishing, pickling and polishing the plate to remove impurities on the surface of the CuNi electrothermal alloy plate strip.
Detailed Description
The invention will be described in further detail with reference to the following embodiments to better embody the advantages of the invention.
In some embodiments, a manufacturing process of a CuNi electrothermal alloy sheet strip includes batching, smelting and flat drawing, primary annealing and surface treatment, slitting and finish rolling, secondary annealing and polishing, and inspection packaging. According to the preparation method, the obtained CuNi electrothermal alloy plate strip can be ensured to have high tensile strength and high hardness, so that the wear resistance is enhanced.
In some embodiments, in the step 2, before smelting, a power frequency smelting furnace is started, the power is gradually increased until the melting channel is melted, the lifting speed is 8-10 m/s, charcoal is used for covering during the lifting, and the furnace temperature is ensured.
In some embodiments, the pickling solution used in the pickling treatment in the step S3 includes, in parts by mass: 10-15 parts of dilute phosphoric acid, 25-30 parts of dilute nitric acid, 5-10 parts of citric acid and 40-50 parts of water; wherein the mass fraction of the dilute phosphoric acid is 20%, and the mass fraction of the dilute nitric acid is 25%.
In some embodiments, the pickling comprises the steps of carrying out heat treatment on a plate subjected to physical polishing, heating to 400-500 ℃ at a heating speed of 5-7 ℃/min, spraying corrosion inhibition strengthening liquid onto the surface of the plate after atomizing, accelerating at a spraying initial speed of 40-55 m/s at 5-7 m/s, stopping spraying when the spraying speed reaches 80-85 m/s, then keeping the temperature for 35-50 min, adding the plate into the corrosion inhibition strengthening liquid at 80-95 ℃, taking out and standing for 40-55 min when the temperature of the plate reaches 200-250 ℃, naturally cooling to room temperature, and then cooling with water at-10 to-5 ℃ to obtain the cooled plate; washing the cooled plate material with dilute sulfuric acid with the mass fraction of 20%, washing with water, and then putting the plate material into a drying furnace for drying at the drying temperature of 100-150 ℃ to obtain a dried plate material; washing the dried plate material with pickling solution, and further drying at 100-150 ℃ to obtain a semi-finished plate belt. By the preparation method, the obtained CuNi electrothermal alloy plate strip can be guaranteed to have good wear resistance, and the tensile strength and the hardness are greatly improved.
Example 1
A production and processing technology of a CuNi electrothermal alloy plate strip comprises the following steps:
s1, proportioning:
proportioning all alloy elements according to the component requirements of the CuNi electrothermal alloy plate and strip, and selecting and preparing corresponding raw materials; wherein, the CuNi electrothermal alloy plate strip Ni:19%, mn:0.5%, cu: the balance;
s2 smelting and parallel guiding:
before smelting, starting a power frequency smelting furnace, and lifting 30KW every 4 hours until the power is 150KW, wherein charcoal is used for covering during the period, so that the furnace temperature is ensured; firstly, adding a nickel plate and an electrolytic copper plate into a smelting furnace according to a proportion, smelting at 1250 ℃ to obtain a copper-nickel material, sampling and detecting the copper-nickel material, adding electrolytic manganese after the components are qualified, starting the smelting furnace to keep the temperature for 30min, keeping the temperature for 1h, and continuously keeping the temperature by using charcoal and glass during smelting; setting a furnace temperature according to the melting point of the material before the flat drawing, setting a drawing speed, a drawing stroke, a stopping time, a backing time and a backing stroke according to the hardness and the fluidity of the material, and starting a tractor to carry out the flat drawing; rolling by a two-roll cold rolling mill to obtain a plate, and rolling the plate to obtain a rolled plate;
s3, primary annealing and surface treatment:
carrying out primary annealing treatment on the rolled plate material, using hydrogen as a protective atmosphere, carrying out annealing at 850 ℃ for 3 hours, cooling along with a furnace, and carrying out physical polishing and acid washing on the annealed plate material to obtain a semi-finished plate belt;
s4, slitting and finish rolling:
slitting the semi-finished plate strip, and performing finish rolling on the slit semi-finished plate strip to obtain a finish rolled plate strip;
s5, secondary annealing and polishing:
carrying out secondary annealing treatment on the finish rolling plate strip, using hydrogen as a protective atmosphere, carrying out annealing at 850 ℃ for 3 hours, cooling along with a furnace, and polishing the annealed finish rolling plate strip to obtain a finish machining plate strip;
s6 detection package
And detecting the finished plate belt, and packaging after the finished plate belt is qualified.
Example 2
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:1%, cu: the balance.
Example 3
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:2%, cu: the balance.
Example 4
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:6%, cu: the balance.
Example 5
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:8%, cu: the balance.
Example 6
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:10%, cu: the balance.
Example 7
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:14.2%, mn:0.3%, cu: the balance.
Example 8
The difference from example 1 is that the alloy elements are proportioned according to the requirements of the components of the CuNi electrothermal alloy sheet and the corresponding raw materials are selected and prepared; wherein, the CuNi electrothermal alloy plate strip Ni:23%, mn:0.5%, cu: the balance.
Example 9
The difference from example 1 is that S3 primary annealing and surface treatment:
carrying out primary annealing treatment on the rolled plate, wherein the annealing temperature is 800 ℃, the heat preservation time is 3 hours, cooling along with a furnace, and carrying out physical polishing and acid washing on the annealed plate to obtain a semi-finished plate belt;
s5, secondary annealing and polishing:
and (3) carrying out secondary annealing treatment on the finish rolling plate belt, wherein the annealing temperature is 800 ℃, the heat preservation time is 3h, cooling along with a furnace, and polishing the annealed finish rolling plate belt to obtain the finish machining plate belt.
Example 10
The difference from example 1 is that S3 primary annealing and surface treatment:
carrying out primary annealing treatment on the rolled plate, wherein the annealing temperature is 900 ℃, the heat preservation time is 3 hours, cooling along with a furnace, and carrying out physical polishing and acid washing on the annealed plate to obtain a semi-finished plate belt;
s5, secondary annealing and polishing:
and (3) carrying out secondary annealing treatment on the finish rolling plate belt, wherein the annealing temperature is 900 ℃, the heat preservation time is 3 hours, cooling along with a furnace, and polishing the annealed finish rolling plate belt to obtain the finish machining plate belt.
Example 11
The difference with the embodiment 1 is that firstly, nickel plates and electrolytic copper plates are added into a smelting furnace according to the proportion, smelting is carried out at the temperature of 1200 ℃ to obtain copper-nickel materials, sampling detection is carried out on the copper-nickel materials, electrolytic manganese is added after the components are qualified, and the smelting furnace is started for heat preservation after 30min, wherein the heat preservation time is 1h.
Example 12
The difference with the embodiment 1 is that firstly, nickel plates and electrolytic copper plates are added into a smelting furnace according to the proportion, smelting is carried out at the temperature of 1300 ℃ to obtain copper-nickel materials, sampling detection is carried out on the copper-nickel materials, electrolytic manganese is added after the components are qualified, and the smelting furnace is started for heat preservation after 30min, wherein the heat preservation time is 1h.
The performance of the CuNi electrothermal alloy strips prepared in examples 1-12 was tested, and comparative example 1 was set at the same time, and the production and processing technique was based on example 1, in which the order of raw materials was changed to simultaneous addition, specifically: s2 smelting and parallel guiding:
before smelting, starting a power frequency smelting furnace, and lifting 30KW every 4 hours until the power is 150KW, wherein charcoal is used for covering during the period, so that the furnace temperature is ensured; adding nickel plates, electrolytic copper plates and electrolytic manganese into a smelting furnace according to the proportion, smelting at 1250 ℃, starting the smelting furnace to keep the temperature after 30min, keeping the temperature for 1h, and continuously keeping the temperature by using charcoal and glass during smelting; setting a furnace temperature according to the melting point of the material before the flat drawing, setting a drawing speed, a drawing stroke, a stopping time, a backing time and a backing stroke according to the hardness and the fluidity of the material, and starting a tractor to carry out the flat drawing; rolling by a two-roll cold rolling mill to obtain a plate, and rolling the plate to obtain a rolled plate.
The tensile strength (MPa) and vickers hardness (MPa) of the CuNi electrothermal alloy sheets of the above examples and comparative example 1 were measured, respectively, and the test results are shown in table 1 below:
table 1CuNi electrothermal alloy sheet and strip Performance detection
| Tensile strength (MPa) | Vickers hardness (MPa) | |
| Example 1 | 1003 | 413 |
| Example 2 | 632 | 375 |
| Example 3 | 695 | 384 |
| Example 4 | 798 | 388 |
| Example 5 | 839 | 391 |
| Example 6 | 865 | 394 |
| Example 7 | 907 | 400 |
| Example 8 | 1041 | 418 |
| Example 9 | 954 | 405 |
| Example 10 | 967 | 402 |
| Example 11 | 998 | 408 |
| Example 12 | 1007 | 415 |
| Comparative example 1 | 823 | 385 |
As can be seen from Table 1, examples 2-8 and example 1 show that there is a certain difference in properties of the prepared CuNi electrothermal alloy strips by using different proportions of Ni, mn and Cu, wherein the properties of the CuNi electrothermal alloy strips prepared in example 1 are optimal.
As can be seen from comparison of examples 9 and 10 with example 1, the tensile properties and hardness of the manufactured CuNi electrothermal alloy sheet and strip can be improved by performing the annealing treatment using different temperatures; meanwhile, example 1 shows that by annealing the CuNi electrothermal alloy sheet and strip as compared with comparative example 1, the tensile properties of the manufactured CuNi electrothermal alloy sheet and strip can be increased, and thus the abrasion resistance of the CuNi electrothermal alloy sheet and strip can be enhanced.
As can be seen from comparison of examples 11 and 12 with example 1, smelting at different temperatures will affect the tensile strength and hardness of the CuNi electrothermal alloy sheet and strip, wherein example 12 is relatively optimal, but comparison shows that example 12 is less different from example 1 in performance, and therefore example 1 is relatively more optimal from the standpoint of economy and the like.
Example 13
On the basis of the embodiment 1, the pickling solution used in the pickling treatment in the step S3 comprises the following components in parts by mass: 12 parts of dilute phosphoric acid, 28 parts of dilute nitric acid, 7 parts of citric acid and 45 parts of water; wherein the mass fraction of the dilute phosphoric acid is 20%, and the mass fraction of the dilute nitric acid is 25%.
The pickling comprises the following steps:
s1, adding 8% sodium borate, 0.3% phosphate, 0.3% triethylene tetramine and 0.4% alkyl imidazoline quaternary ammonium salt into 1L water, and uniformly mixing to obtain corrosion inhibition strengthening liquid;
s2, carrying out heat treatment on the plate subjected to physical polishing, heating to 450 ℃ at a heating speed of 6 ℃/min, spraying corrosion inhibition strengthening liquid onto the surface of the plate after atomizing, wherein the initial spraying speed is 50m/S, the spraying speed is accelerated at 6m/S, stopping spraying when the spraying speed reaches 83m/S, then keeping the temperature for 45min, adding the plate into the corrosion inhibition strengthening liquid with 86 ℃, taking out and standing for 47min when the temperature of the plate reaches 225 ℃, naturally cooling to room temperature, and then cooling with water with the temperature of-8 ℃ to obtain the cooled plate;
s3, washing the cooled plate material with dilute sulfuric acid with the mass fraction of 20%, washing with water, and then putting the plate material into a drying furnace for drying at the drying temperature of 125 ℃ to obtain a dried plate material;
and S4, washing the dried plate material with pickling solution, and further drying at a drying temperature of 125 ℃ to obtain a semi-finished plate belt.
Example 14
The difference from example 13 is that the pickling solution used in the pickling treatment in step S3 comprises, in parts by mass: 10 parts of dilute phosphoric acid, 25 parts of dilute nitric acid, 5 parts of citric acid and 40 parts of water; wherein the mass fraction of the dilute phosphoric acid is 20%, and the mass fraction of the dilute nitric acid is 25%.
Example 15
The difference from example 13 is that the pickling solution used in the pickling treatment in step S3 comprises, in parts by mass: 15 parts of dilute phosphoric acid, 30 parts of dilute nitric acid, 10 parts of citric acid and 50 parts of water; wherein the mass fraction of the dilute phosphoric acid is 20%, and the mass fraction of the dilute nitric acid is 25%.
Example 16
The difference from example 13 is that sodium borate with the mass percent of 5%, phosphate with the mass percent of 0.1%, triethylene tetramine with the mass percent of 0.2% and alkyl imidazoline quaternary ammonium salt with the mass percent of 0.2% are added into 1L of water, and the corrosion inhibition strengthening liquid is obtained after uniform mixing.
Example 17
The difference from example 13 is that sodium borate with the mass percent of 10%, phosphate with the mass percent of 0.5%, triethylene tetramine with the mass percent of 0.4% and alkyl imidazoline quaternary ammonium salt with the mass percent of 0.5% are added into 1L of water, and the corrosion inhibition strengthening liquid is obtained after uniform mixing.
Example 18
The difference from example 13 is that the plate after physical polishing is heat treated, the corrosion inhibition reinforcing liquid is atomized and then sprayed on the surface of the plate, the initial spraying speed is 40m/s, the spraying speed is accelerated by 5m/s, when the spraying speed reaches 80m/s, the spraying is stopped, and the subsequent heat preservation time is 35min.
Example 19
The difference from example 13 is that the plate after physical polishing is heat-treated, the corrosion inhibition reinforcing liquid is atomized and then sprayed on the surface of the plate, the initial spraying speed is 55m/s, the spraying speed is accelerated by 7m/s, when the spraying speed reaches 85m/s, the spraying is stopped, and the subsequent heat preservation time is 50min.
Example 20
The difference from example 13 is that after the temperature is raised to 400 ℃ at a heating rate of 5 ℃/min, the plate is added into corrosion inhibition strengthening liquid with the temperature of 80 ℃, when the temperature of the plate reaches 200 ℃, the plate is taken out and kept stand for 40min, naturally cooled to room temperature, and then the cooled plate is obtained by cooling the plate with water with the temperature of-10 ℃.
Example 21
The difference from example 13 is that after the temperature is raised to 500 ℃ at a heating rate of 7 ℃/min, the plate is added into corrosion inhibition strengthening liquid with the temperature of 95 ℃, when the temperature of the plate reaches 250 ℃, the plate is taken out and kept stand for 55min, naturally cooled to room temperature, and then the cooled plate is obtained by cooling the plate with water with the temperature of-5 ℃.
Example 22
The difference from example 13 is that the cooled plate material is washed with dilute sulfuric acid with mass fraction of 20%, then washed with water, and then put into a drying furnace for drying, wherein the drying temperature is 100 ℃, and the dried plate material is obtained; and washing the dried plate material with pickling solution, and further drying at a drying temperature of 100 ℃ to obtain a semi-finished plate belt.
Example 23
The difference from example 13 is that the cooled plate material is washed with dilute sulfuric acid with mass fraction of 20%, then washed with water, and then put into a drying oven for drying, the drying temperature is 150 ℃, and the dried plate material is obtained; and washing the dried plate material with pickling solution, and further drying at 150 ℃ to obtain a semi-finished plate belt.
The properties of the CuNi electrothermal alloy strips prepared in examples 13 to 23 were measured while comparative examples were set as follows:
comparative example 2 the sustained-release strengthening liquid was proportioned based on example 13, and the rest steps were the same as example 13, specifically:
s1, adding 8% sodium borate, 0.3% phosphate and 0.3% triethylene tetramine into 1L water, and uniformly mixing to obtain the corrosion inhibition strengthening liquid.
Comparative example 3 the atomization of the slow-release strengthening liquid during the temperature rising process of the plate material was removed on the basis of example 13, and the other steps were the same as those of example 13, specifically:
s2, performing heat treatment on the plate subjected to physical polishing, heating to 450 ℃ at a heating speed of 6 ℃/min, adding the plate into corrosion inhibition strengthening liquid with the temperature of 86 ℃, taking out and standing for 47min when the temperature of the plate reaches 225 ℃, naturally cooling to room temperature, and then putting into water with the temperature of-8 ℃ for cooling to obtain the cooled plate.
Comparative example 4 changes the cooling mode of the plate material based on example 13, and the rest steps are the same as example 13, specifically:
s2, atomizing the corrosion inhibition strengthening liquid and spraying the atomized corrosion inhibition strengthening liquid onto the surface of the plate, wherein the initial spraying speed is 50m/S, the spraying speed is accelerated by 6m/S, when the spraying speed reaches 83m/S, the spraying is stopped, the heat preservation time is 45min, and the plate is naturally cooled to room temperature, so that the cooled plate is obtained.
The tensile strength (MPa) and vickers hardness (MPa) of the CuNi electrothermal alloy sheets of the above examples and comparative examples 2, 3, and 4 were measured, respectively, and the test results are shown in table 2 below:
table 2CuNi electrothermal alloy sheet and strip Performance detection
| Tensile strength (MPa) | Vickers hardness (MPa) | |
| Example 13 | 1176 | 475 |
| Example 14 | 1165 | 470 |
| Example 15 | 1167 | 472 |
| Example 16 | 1109 | 467 |
| Example 17 | 1112 | 469 |
| Example 18 | 1090 | 461 |
| Example 19 | 1097 | 464 |
| Example 20 | 1134 | 457 |
| Example 21 | 1143 | 459 |
| Example 22 | 1161 | 470 |
| Example 23 | 1179 | 476 |
| Comparative example 2 | 1034 | 424 |
| Comparative example 3 | 1059 | 437 |
| Comparative example 4 | 1073 | 444 |
As can be seen from table 2, comparing examples 14 and 15 with example 13, pickling with pickling solutions made of various parts by weight of dilute phosphoric acid, dilute nitric acid, citric acid and water will help to improve the tensile strength and hardness of the resulting CuNi electrothermal alloy sheet and strip, and further improve the wear resistance of the CuNi electrothermal alloy sheet and strip, wherein example 13 is relatively optimal.
As can be seen by comparing examples 16 and 17 with example 13, the tensile strength and hardness of the obtained CuNi electrothermal alloy sheet and strip can be improved by adopting corrosion inhibition strengthening liquid prepared from sodium borate, phosphate, triethylene tetramine and alkyl imidazoline quaternary ammonium salt in different mass percentages; meanwhile, as can be seen from comparison with comparative example 2, example 13 can enhance the tensile strength and hardness of the resulting CuNi electrothermal alloy sheet and enhance the wear resistance of the CuNi electrothermal alloy sheet by adding the alkyl imidazoline quaternary ammonium salt to the corrosion inhibition strengthening liquid.
As can be seen by comparing examples 18 and 19 with example 13, the corrosion inhibition strengthening liquid is sprayed at different initial speeds and different spraying accelerations after being atomized, and then the temperature is kept for different times, so that the tensile strength and the hardness of the obtained CuNi electrothermal alloy plate strip can be enhanced; meanwhile, as can be seen from comparison of example 13 with comparative example 3, the tensile strength and hardness of the obtained CuNi electrothermal alloy sheet strip can be enhanced by spraying the corrosion inhibition enhancing liquid onto the surface of the sheet material at a uniform acceleration rate and maintaining the temperature, thereby enhancing the wear resistance of the CuNi electrothermal alloy sheet strip.
As can be seen by comparing examples 20 and 21 with example 13, the tensile strength and hardness of the obtained CuNi electrothermal alloy sheet can be enhanced by heating the sheet to different temperatures at different speeds, then adding the sheet into corrosion inhibition strengthening liquid at different temperatures, standing for different times after reaching different temperatures, and cooling with ice water at different temperatures; meanwhile, as can be seen from comparison with comparative example 4, example 13 can enhance the wear resistance of the CuNi electrothermal alloy sheet and strip by adding a corrosion inhibition strengthening liquid after heating the sheet and then standing and cooling with ice water.
As can be seen from comparison of examples 22 and 23 with example 13, drying the washed sheet material at different temperatures improves the tensile strength and hardness of the resulting CuNi electrothermal alloy sheet and further enhances the wear resistance of the CuNi electrothermal alloy sheet, wherein example 23 is optimal, but the difference in performance between them is not great as can be seen from comparison with example 13, but example 23 adopts a higher drying temperature, and therefore, from the viewpoint of energy consumption and the like, example 13 is relatively better.
Claims (9)
1. The production and processing technology of the CuNi electrothermal alloy plate strip is characterized by comprising the following steps of:
s1, proportioning:
proportioning all alloy elements according to the component requirements of the CuNi electrothermal alloy plate and strip, and selecting and preparing corresponding raw materials; wherein, the CuNi electrothermal alloy plate strip Ni: 1-23%, mn:0 to 0.5 percent, cu: the balance;
s2 smelting and parallel guiding:
adding the raw materials into a smelting furnace one by one according to the proportion and the sequence, smelting, and carrying out flat drawing and cold rolling in sequence to obtain a rolled plate;
s3, primary annealing and surface treatment:
carrying out primary annealing treatment on the rolled plate, wherein the annealing temperature is 800-900 ℃, the heat preservation time is 3h, cooling along with a furnace, and carrying out physical polishing and acid washing on the annealed plate to obtain a semi-finished plate belt;
s4, slitting and finish rolling:
slitting the semi-finished plate strip, and performing finish rolling on the slit semi-finished plate strip to obtain a finish rolled plate strip;
s5, secondary annealing and polishing:
carrying out secondary annealing treatment on the finish rolling plate belt, wherein the annealing temperature is 800-900 ℃, the heat preservation time is 3h, cooling along with a furnace, and polishing the annealed finish rolling plate belt to obtain a finish machining plate belt;
s6 detection package
And detecting the finished plate belt, and packaging after the finished plate belt is qualified.
2. The process for producing and processing the CuNi electrothermal alloy sheet and strip according to claim 1, wherein in the step S2, before smelting, a power frequency smelting furnace is started, 30KW is lifted every 4 hours until the power is 150KW, and charcoal is used for covering to ensure the furnace temperature.
3. The process for producing and processing CuNi electrothermal alloy sheet and strip according to claim 1, wherein in step S2, the heat preservation is continuously performed using charcoal and glass during the melting.
4. The production and processing technology of the CuNi electrothermal alloy plate strip according to claim 1, wherein in the step S2, a nickel plate and an electrolytic copper plate are added into a smelting furnace according to a proportion, smelting is carried out at the temperature of 1200-1300 ℃ to obtain a copper-nickel material, sampling and detecting are carried out on the copper-nickel material, electrolytic manganese is added after components are qualified, the smelting furnace is started for heat preservation after 30min, and the heat preservation time is 1h.
5. The process for manufacturing and processing a CuNi electrothermal alloy sheet and strip according to claim 1, wherein in step S2, a furnace temperature is set according to a melting point of a material before the leveling, and a traction rate, a traction stroke, a stop time, a retraction time and a retraction stroke are set according to hardness and fluidity of the material, and a tractor is started for leveling.
6. The process for manufacturing and processing the CuNi electrothermal alloy sheet and strip according to claim 1, wherein in the step S2, the cold rolling is performed by a two-roll cold rolling mill to obtain a sheet material, and the sheet material is rolled to obtain a rolled sheet material.
7. The process for manufacturing a CuNi electrothermal alloy sheet and strip according to claim 1, wherein in step S3, hydrogen is used as a protective atmosphere for both the primary annealing and the secondary annealing.
8. The production and processing technology of the CuNi electrothermal alloy sheet and strip according to claim 1, wherein the pickling solution used in the pickling treatment in the step S3 comprises the following components in parts by mass: 10-15 parts of dilute phosphoric acid, 25-30 parts of dilute nitric acid, 5-10 parts of citric acid and 40-50 parts of water; wherein the mass fraction of the dilute phosphoric acid is 20%, and the mass fraction of the dilute nitric acid is 25%.
9. The manufacturing process of the CuNi electrothermal alloy sheet and strip according to claim 7, wherein the pickling comprises the steps of:
s1, adding 5-10% of sodium borate, 0.1-0.5% of phosphate, 0.2-0.4% of triethylene tetramine and 0.2-0.5% of alkyl imidazoline quaternary ammonium salt into 1L of water, and uniformly mixing to obtain corrosion inhibition strengthening liquid;
s2, carrying out heat treatment on the plate subjected to physical polishing, heating to 400-500 ℃ at a heating speed of 5-7 ℃/min, spraying corrosion inhibition strengthening liquid onto the surface of the plate after atomizing, accelerating at a spraying initial speed of 40-55 m/S and a spraying speed of 5-7 m/S, stopping spraying when the spraying speed reaches 80-85 m/S, then keeping the temperature for 35-50 min, adding the plate into the corrosion inhibition strengthening liquid at 80-95 ℃, taking out and standing for 40-55 min when the temperature of the plate reaches 200-250 ℃, naturally cooling to room temperature, and then cooling with water at-10 to-5 ℃ to obtain the cooled plate;
s3, washing the cooled plate material with dilute sulfuric acid with the mass fraction of 20%, washing with water, and then putting the plate material into a drying furnace for drying at the drying temperature of 100-150 ℃ to obtain a dried plate material;
s4, washing the dried plate material with pickling solution, and further drying at 100-150 ℃ to obtain a semi-finished plate belt.
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