CN111621666A - Rolling method of Cu-Cr series alloy plate strip - Google Patents
Rolling method of Cu-Cr series alloy plate strip Download PDFInfo
- Publication number
- CN111621666A CN111621666A CN202010575167.6A CN202010575167A CN111621666A CN 111621666 A CN111621666 A CN 111621666A CN 202010575167 A CN202010575167 A CN 202010575167A CN 111621666 A CN111621666 A CN 111621666A
- Authority
- CN
- China
- Prior art keywords
- rolling
- milling
- alloy
- plate strip
- alloy plate
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Granted
Links
- 239000000956 alloy Substances 0.000 title claims abstract description 159
- 229910045601 alloy Inorganic materials 0.000 title claims abstract description 158
- 238000005096 rolling process Methods 0.000 title claims abstract description 132
- 238000000034 method Methods 0.000 title claims abstract description 50
- 229910017813 Cu—Cr Inorganic materials 0.000 title claims abstract description 13
- 238000003801 milling Methods 0.000 claims abstract description 125
- 239000010949 copper Substances 0.000 claims abstract description 57
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 49
- 229910052802 copper Inorganic materials 0.000 claims abstract description 49
- 238000009749 continuous casting Methods 0.000 claims abstract description 43
- 230000032683 aging Effects 0.000 claims abstract description 30
- 239000000203 mixture Substances 0.000 claims abstract description 17
- 239000012535 impurity Substances 0.000 claims abstract description 16
- 238000004381 surface treatment Methods 0.000 claims abstract description 15
- 239000000126 substance Substances 0.000 claims abstract description 12
- 239000000463 material Substances 0.000 claims abstract description 11
- 229910052726 zirconium Inorganic materials 0.000 claims abstract description 7
- 229910052742 iron Inorganic materials 0.000 claims abstract description 6
- 238000010438 heat treatment Methods 0.000 claims description 44
- 238000005266 casting Methods 0.000 claims description 26
- 238000005406 washing Methods 0.000 claims description 24
- 238000005098 hot rolling Methods 0.000 claims description 23
- 239000000243 solution Substances 0.000 claims description 19
- KRKNYBCHXYNGOX-UHFFFAOYSA-N citric acid Chemical compound OC(=O)CC(O)(C(O)=O)CC(O)=O KRKNYBCHXYNGOX-UHFFFAOYSA-N 0.000 claims description 15
- 239000006104 solid solution Substances 0.000 claims description 13
- 238000002844 melting Methods 0.000 claims description 11
- 230000008018 melting Effects 0.000 claims description 11
- 238000005554 pickling Methods 0.000 claims description 11
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Chemical compound O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 11
- NBIIXXVUZAFLBC-UHFFFAOYSA-N Phosphoric acid Chemical compound OP(O)(O)=O NBIIXXVUZAFLBC-UHFFFAOYSA-N 0.000 claims description 10
- 238000001816 cooling Methods 0.000 claims description 10
- 238000005520 cutting process Methods 0.000 claims description 10
- 238000002791 soaking Methods 0.000 claims description 10
- 239000002253 acid Substances 0.000 claims description 9
- 238000010301 surface-oxidation reaction Methods 0.000 claims description 9
- 238000005097 cold rolling Methods 0.000 claims description 8
- 229910000831 Steel Inorganic materials 0.000 claims description 6
- 239000002994 raw material Substances 0.000 claims description 6
- 239000010959 steel Substances 0.000 claims description 6
- 229910000147 aluminium phosphate Inorganic materials 0.000 claims description 5
- 238000007664 blowing Methods 0.000 claims description 5
- 238000007872 degassing Methods 0.000 claims description 5
- 239000008367 deionised water Substances 0.000 claims description 5
- 229910021641 deionized water Inorganic materials 0.000 claims description 5
- 238000001035 drying Methods 0.000 claims description 5
- 238000004806 packaging method and process Methods 0.000 claims description 5
- 238000004321 preservation Methods 0.000 claims description 5
- 239000011261 inert gas Substances 0.000 claims description 4
- 229910052804 chromium Inorganic materials 0.000 claims description 3
- 229910052745 lead Inorganic materials 0.000 claims description 2
- 229910052718 tin Inorganic materials 0.000 claims 1
- 238000004519 manufacturing process Methods 0.000 abstract description 19
- 238000012797 qualification Methods 0.000 abstract description 4
- 239000007788 liquid Substances 0.000 description 29
- 238000003723 Smelting Methods 0.000 description 25
- 230000008569 process Effects 0.000 description 12
- 229910000881 Cu alloy Inorganic materials 0.000 description 8
- 239000011651 chromium Substances 0.000 description 8
- 239000011819 refractory material Substances 0.000 description 6
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 5
- 230000009286 beneficial effect Effects 0.000 description 5
- 230000000052 comparative effect Effects 0.000 description 5
- 229910052760 oxygen Inorganic materials 0.000 description 5
- 239000001301 oxygen Substances 0.000 description 5
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 description 4
- 229910000599 Cr alloy Inorganic materials 0.000 description 4
- GXDVEXJTVGRLNW-UHFFFAOYSA-N [Cr].[Cu] Chemical compound [Cr].[Cu] GXDVEXJTVGRLNW-UHFFFAOYSA-N 0.000 description 4
- 230000009471 action Effects 0.000 description 4
- 239000000788 chromium alloy Substances 0.000 description 4
- 230000000694 effects Effects 0.000 description 4
- 229910002804 graphite Inorganic materials 0.000 description 4
- 239000010439 graphite Substances 0.000 description 4
- 238000000265 homogenisation Methods 0.000 description 4
- 230000006698 induction Effects 0.000 description 4
- 239000010687 lubricating oil Substances 0.000 description 4
- 239000000155 melt Substances 0.000 description 4
- 238000002360 preparation method Methods 0.000 description 4
- 238000003756 stirring Methods 0.000 description 4
- 150000001875 compounds Chemical class 0.000 description 3
- 238000012937 correction Methods 0.000 description 3
- 238000002156 mixing Methods 0.000 description 3
- 238000003825 pressing Methods 0.000 description 3
- 238000004891 communication Methods 0.000 description 2
- 238000005516 engineering process Methods 0.000 description 2
- 238000003754 machining Methods 0.000 description 2
- 238000012986 modification Methods 0.000 description 2
- 230000004048 modification Effects 0.000 description 2
- 238000001556 precipitation Methods 0.000 description 2
- 238000009864 tensile test Methods 0.000 description 2
- 238000009827 uniform distribution Methods 0.000 description 2
- 125000000954 2-hydroxyethyl group Chemical group [H]C([*])([H])C([H])([H])O[H] 0.000 description 1
- 229920002367 Polyisobutene Polymers 0.000 description 1
- 238000005299 abrasion Methods 0.000 description 1
- 150000001412 amines Chemical class 0.000 description 1
- 239000003963 antioxidant agent Substances 0.000 description 1
- 230000003078 antioxidant effect Effects 0.000 description 1
- DMSMPAJRVJJAGA-UHFFFAOYSA-N benzo[d]isothiazol-3-one Chemical compound C1=CC=C2C(=O)NSC2=C1 DMSMPAJRVJJAGA-UHFFFAOYSA-N 0.000 description 1
- QRUDEWIWKLJBPS-UHFFFAOYSA-N benzotriazole Chemical compound C1=CC=C2N[N][N]C2=C1 QRUDEWIWKLJBPS-UHFFFAOYSA-N 0.000 description 1
- 230000008859 change Effects 0.000 description 1
- 239000003795 chemical substances by application Substances 0.000 description 1
- 235000019864 coconut oil Nutrition 0.000 description 1
- 239000003240 coconut oil Substances 0.000 description 1
- 238000001514 detection method Methods 0.000 description 1
- 238000011161 development Methods 0.000 description 1
- 230000018109 developmental process Effects 0.000 description 1
- 235000014113 dietary fatty acids Nutrition 0.000 description 1
- 239000004205 dimethyl polysiloxane Substances 0.000 description 1
- MIMDHDXOBDPUQW-UHFFFAOYSA-N dioctyl decanedioate Chemical compound CCCCCCCCOC(=O)CCCCCCCCC(=O)OCCCCCCCC MIMDHDXOBDPUQW-UHFFFAOYSA-N 0.000 description 1
- 239000000194 fatty acid Substances 0.000 description 1
- 229930195729 fatty acid Natural products 0.000 description 1
- 150000004665 fatty acids Chemical class 0.000 description 1
- 238000011049 filling Methods 0.000 description 1
- 239000003292 glue Substances 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 229910052755 nonmetal Inorganic materials 0.000 description 1
- 238000011056 performance test Methods 0.000 description 1
- 229920000435 poly(dimethylsiloxane) Polymers 0.000 description 1
- -1 polydimethylsiloxane Polymers 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 238000007670 refining Methods 0.000 description 1
- 239000002893 slag Substances 0.000 description 1
- 238000010998 test method Methods 0.000 description 1
- 238000012360 testing method Methods 0.000 description 1
- 230000009466 transformation Effects 0.000 description 1
- 239000002699 waste material Substances 0.000 description 1
- 238000004804 winding Methods 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
-
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/46—Roll speed or drive motor control
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/001—Continuous casting of metals, i.e. casting in indefinite lengths of specific alloys
- B22D11/004—Copper alloys
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D11/00—Continuous casting of metals, i.e. casting in indefinite lengths
- B22D11/14—Plants for continuous casting
- B22D11/145—Plants for continuous casting for upward casting
-
- 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
- C22F1/002—Changing the physical structure of non-ferrous metals or alloys by heat treatment or by hot or cold working by rapid cooling or quenching; cooling agents used therefor
-
- 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
- C23G1/10—Other heavy metals
- C23G1/103—Other heavy metals copper or alloys of copper
-
- 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
- B21B2003/005—Copper or its alloys
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)
- Metal Rolling (AREA)
Abstract
A rolling method of Cu-Cr series alloy plate strip, the chemical composition of the alloy is Cr: 0.5 to 1.5%, Zr: 0.03-1.8%, Fe is less than or equal to 0.08%, and Si is less than or equal to 0.1%. The balance of copper and inevitable impurities; the rolling method comprises the following steps: (1) preparing materials; (2) upward continuous casting; (3) hot continuous rolling the square billet; (4) solution treatment; (5) milling a surface; (6) rough rolling; (7) aging treatment; (8) surface treatment; (9) fine rolling; (10) rolling; (11) and (6) slitting. The method of the invention can reduce the production cost, improve the product quality and the qualification rate of finished products, and greatly meet the market demand.
Description
Technical Field
The invention belongs to the field of strip rolling technology of alloy materials, and particularly relates to a rolling method of a Cu-Cr series alloy strip.
Background
In recent years, the demand of our country for high-precision and high-performance copper and copper alloy sheet strips has increased sharply, and with the development of miniaturization and light weight of devices such as electronic parts, communication equipment, electrical equipment and the like, the demand for copper alloy sheets with thin thickness, high strength and high conductivity has become more and more urgent. The copper plate and strip material is widely applied to the key fields of new-generation information communication technology industry, aerospace equipment, energy-saving and new-energy automobiles, new materials and the like, occupies an important position in a technical innovation route map of the key fields of the country, and is also always the key point of special fund support for the joy of the national industry and technical transformation.
At present, the rolling of the CuCrZr plate strip mainly comprises two methods of continuous casting and continuous rolling and square billet rolling.
The continuous casting and rolling is a copper rolling process in which copper liquid is poured into a continuous casting machine to cast a copper billet, and then the copper billet is directly rolled and formed in a hot continuous rolling unit after being kept warm for a certain time in a soaking pit without cooling. The process comprises the following steps: 1. smelting: filling the molten copper heated to a molten state into a casting ladle; 2. pouring: injecting the copper liquid in the casting ladle into a continuous casting machine for continuous casting production, and drawing out a continuous casting billet from the lower part of the continuous casting machine; 3. soaking the raw materials: using flying shears to cut the continuous casting billet to a fixed length, sending the continuous casting billet cut to the fixed length into a soaking furnace, and slowly advancing the continuous casting billet in the soaking furnace to ensure that the temperature of the continuous casting billet is uniform and constant; 4. hot rolling: the continuous casting billet enters a hot continuous rolling unit for rolling after coming out from the other end of the soaking pit furnace; 5. and (3) cooling: the copper material after rolling forming enters a water cooling section for cooling; 6. winding: the cooled steel enters a coiling machine to be coiled; 7. cold rolling: and cold rolling the coiled blank to a finished product.
The method for rolling the square billet comprises the steps of firstly, melting and casting copper liquid into the square billet, then, heating the square billet, then, carrying out hot rolling, and carrying out cold rolling after the hot rolling is finished.
The above prior art has the following problems:
the equipment has large volume and large investment, and the annual capacity of the equipment is large, so the equipment is not suitable for small-batch and discontinuous production of copper alloy products. At present, domestic Cu-Cr alloy plate strip products are various in batches and different in size, the traditional rolling cost is high, the production period is long, and the material waste is large.
Secondly, the oxygen content in the copper liquid is high, the ingot casting refining difficulty is large, the rate of finished products is low, and the material utilization rate is low.
When the copper or copper alloy liquid flows through the chute and the casting ladle, the falling refractory material is brought into the casting blank in the process of washing the refractory material on the lining wall to form non-metal slag inclusion, and the quality of the rod blank is reduced.
Disclosure of Invention
In order to solve the problems in the prior art, the invention provides a rolling method of a Cu-Cr alloy plate strip. The method of the invention can reduce the production cost, improve the product quality and the qualification rate of finished products, and greatly meet the market demand.
In order to achieve the above object, the present invention provides a method for rolling a Cu — Cr series alloy strip, the alloy having a chemical composition of Cr: 0.5 to 1.5%, Zr: 0.03-1.8%, Fe is less than or equal to 0.08%, Si is less than or equal to 0.1%, and the balance is copper and inevitable impurities; the rolling method comprises the following steps:
(1) preparing materials; preparing raw materials and proportioning according to the chemical composition of the alloy, wherein the adding sequence of the alloy is as follows: melting Cu, preserving heat for 15-20 min after melting, simultaneously adding Cr and Zr, and then fully degassing and removing impurities;
(2) upward continuous casting; producing an alloy casting rod with the diameter of phi 30-phi 60 by using an upward continuous casting method, and collecting the alloy casting rod into a coil; the up-drawing continuous casting is characterized in that a tubular copper sleeve (graphite crystallizer) is extended into and immersed under the liquid level of molten alloy, the upper end of the tubular copper sleeve is communicated with a vacuum pump, and under the action of vacuum negative pressure, the alloy liquid is slowly sucked upwards in the crystallizer and is solidified into a bright cast ingot near a lifting device.
It is characterized in that: 1) the smelting alloy is directly made into rod blank, and the smelting and continuous casting processes are all carried out under the vacuum condition, and the obtained rod blank belongs to an oxygen-free rod (oxygen content is less than 0.001 percent), and is suitable for smelting and casting various copper and copper alloy wire blanks. 2) The alloy liquid level is basically stable in the production process of the upper-leading smelting furnace, the alloy preparation proportion is easy to control, and the component uniformity is good. 3) The upper-guiding smelting furnace heats the lower induction coil, the heat source comes from the lower part of the hearth, and the melt in the furnace is simultaneously acted by electromagnetic force and heat force and is in continuous turbulent stirring, thus being beneficial to the homogenization of alloy components. 4) The alloy liquid level is stable in the production process of the upper-guide smelting furnace, and the situation that the refractory materials are washed and fall off when the continuous casting and continuous rolling alloy liquid flows through the chute, the tundish and the ladle is avoided, so that non-metallic inclusions are not easy to appear in an upper-guide casting blank, and the purity of a rod blank is facilitated. 5) The up-drawing continuous casting equipment has small furnace volume which is generally about 3-7 tons, the cost of disassembling and washing the furnace is low, the variety of the alloy is flexibly changed, and the up-drawing continuous casting equipment is suitable for the requirements of discontinuous and small-batch supply.
(3) Hot continuous rolling the square billet; carrying out paying off, straightening and online heating on the alloy cast rod with the diameter of phi 30-60 at the heating temperature of 950 ℃, and entering a hot rolling mill for hot rolling; rolling the blank into a square blank with the width of 50-120 mm and the thickness of 10-15 mm by a hot rolling mill;
(4) solution treatment; the solid solution treatment is a heat treatment mode, the alloy is heated to 800-950 ℃, the temperature is kept constant, the excess phase is fully dissolved in the solid solution, and then the mixture is rapidly cooled to obtain a supersaturated solid solution;
(5) milling a surface; after hot rolling and solution treatment, the surface of the square billet has a thicker oxide layer, the surface of the square billet needs to be milled, and the oxide layer on the surface is removed to obtain an alloy plate strip; the milling chip thickness is generally determined according to the surface oxidation degree, and is generally 1 mm;
(6) rough rolling; after the surface of the alloy plate strip is milled, the alloy plate strip enters a cold rolling mill to be rolled for multiple times, and the rolling speed is 0.3-0.6 m/s; then, cutting the head of the rolled piece by 70-80 mm, and then carrying out multi-pass rolling at the rolling speed of 0.8-1 m/s; the rolling thickness of the alloy plate strip is 1mm, and the rolling deformation is not less than 90%;
(7) aging treatment; feeding the alloy plate strip subjected to rough rolling into a heat treatment bell-type furnace, heating to 400-450 ℃, and preserving heat for 3 hours;
(8) surface treatment; after the aging is finished, the surface of the alloy plate strip is slightly oxidized, surface oxidation and impurities are removed in an acid washing mode, and the whole process is prevented from being collided;
(9) fine rolling; after the surface treatment is finished, the copper strip enters the rolling mill again, finish rolling is carried out, and the copper strip is rolled to the specification and the size required by the product;
(10) rolling; rolling the rolled steel coil;
(11) slitting; and cutting the copper strip according to the specification of the product, packaging and delivering to customers.
Preferably, in the step (3), the cast rod needs to be continuously heated on line before rolling, the heating speed is 13m/min, the heating furnace is divided into 4 sections, furnace bodies are connected by a heat-insulating cover, the furnace cavity is protected by inert gas, the heating furnace adopts power feeding, and the heating speed is matched with the rolling speed. Before entering the hearth, the copper bar needs to be straightened by a flat roller straightening machine, and the straightness is less than or equal to 10 mm/m.
In any of the above schemes, preferably, during face milling, after the depth of each face milling pass is confirmed, a left milling procedure is firstly carried out, the milling speed of the left milling is 65-70 mm/min, after the left milling is finished, the milling amount of a cutter head is adjusted, the lower milling is carried out, the milling speed of the lower milling is 95-100 mm/min, and the center lines of the milling cutter grains are on the same straight line as much as possible in the lower milling process; and after the lower milling is finished, adjusting the milling amount of the cutter head, then carrying out right milling, wherein the milling speed of the right milling is 130-140 mm/min, after the right milling is finished, adjusting the milling amount of the milling cutter, and then carrying out upper milling, wherein the milling speed of the upper milling is 130-140 mm/min.
In any of the above embodiments, it is preferable that the alloy strip is further subjected to secondary aging treatment and straightening after the finish rolling and before the coiling: and carrying out secondary aging treatment on the finish-rolled alloy plate strip in a heat treatment bell-type furnace, wherein the aging temperature is 440-450 ℃, the heat preservation time is 5-8 h, cooling the alloy plate strip along with the furnace after aging, and correcting the alloy plate strip.
In any of the above embodiments, preferably, the washing liquid used for the acid washing is a mixture of 85% phosphoric acid, 100g/L citric acid and deionized water at a volume ratio of 2.5:5 (70-80).
In any of the above schemes, preferably, the pickling is performed to treat the surface of the alloy plate strip by soaking for 2.5-3 minutes; and after pickling, washing the surface of the alloy plate strip with water, and then drying the surface by blowing.
The invention has the beneficial effects that:
1. the invention has small equipment investment and low production cost; the yield is high, and the quality is stable; flexible production, various product types, strong market adaptability and the like.
2. The method of the invention can reduce the production cost, improve the product quality and the qualification rate of finished products, and greatly meet the market demand.
3. By optimizing the components and the process of the alloy, the provided copper-chromium alloy has good comprehensive performance, realizes good yield strength, elastic property and creep resistance, and the comprehensive performance of the copper-chromium alloy meets the machining performance requirement of the product.
4. The alloy prepared by the method has finer grain size, can effectively control the precipitation and uniform distribution of solid solution, and has important effects on improving the strength, hardness and softening resistance temperature of the alloy.
Detailed Description
The technical solutions of the present application will be described in detail below with reference to specific embodiments of the present application, but the following examples are only for understanding the present invention, and the examples and features of the examples in the present application can be combined with each other, and the present application can be implemented in various different ways as defined and covered by the claims.
Example 1
A rolling method of Cu-Cr series alloy plate strip, the chemical composition of the alloy is Cr: 0.5 to 1.5%, Zr: 0.03-1.8%, Fe is less than or equal to 0.08%, Si is less than or equal to 0.1%, and the balance is copper and inevitable impurities; the rolling method comprises the following steps:
(1) preparing materials; preparing raw materials and proportioning according to the chemical composition of the alloy, wherein the adding sequence of the alloy is as follows: melting Cu, keeping the temperature for 20min after melting, simultaneously adding Cr and Zr, and then fully degassing and removing impurities;
(2) upward continuous casting; producing an alloy casting rod with the diameter of phi 30 by using an upward continuous casting method, and collecting the alloy casting rod into a coil; the up-drawing continuous casting is characterized in that a tubular copper sleeve (graphite crystallizer) is extended into and immersed under the liquid level of molten alloy, the upper end of the tubular copper sleeve is communicated with a vacuum pump, and under the action of vacuum negative pressure, the alloy liquid is slowly sucked upwards in the crystallizer and is solidified into a bright cast ingot near a lifting device.
It is characterized in that: 1) the smelting alloy is directly made into rod blank, and the smelting and continuous casting processes are all carried out under the vacuum condition, and the obtained rod blank belongs to an oxygen-free rod (oxygen content is less than 0.001 percent), and is suitable for smelting and casting various copper and copper alloy wire blanks. 2) The alloy liquid level is basically stable in the production process of the upper-leading smelting furnace, the alloy preparation proportion is easy to control, and the component uniformity is good. 3) The upper-guiding smelting furnace heats the lower induction coil, the heat source comes from the lower part of the hearth, and the melt in the furnace is simultaneously acted by electromagnetic force and heat force and is in continuous turbulent stirring, thus being beneficial to the homogenization of alloy components. 4) The alloy liquid level is stable in the production process of the upper-guide smelting furnace, and the situation that the refractory materials are washed and fall off when the continuous casting and continuous rolling alloy liquid flows through the chute, the tundish and the ladle is avoided, so that non-metallic inclusions are not easy to appear in an upper-guide casting blank, and the purity of a rod blank is facilitated. 5) The up-drawing continuous casting equipment has small furnace volume which is generally about 3-7 tons, the cost of disassembling and washing the furnace is low, the variety of the alloy is flexibly changed, and the up-drawing continuous casting equipment is suitable for the requirements of discontinuous and small-batch supply.
(3) Hot continuous rolling the square billet; carrying out paying off, straightening and online heating on the alloy casting rod with the phi of 30 at the heating temperature of 950 ℃, and entering a hot rolling mill for hot rolling; rolling the mixture into a square billet with the width of 150 mm and the thickness of 10mm by a hot rolling mill;
(4) solution treatment; the solution treatment is a heat treatment mode, the alloy is heated to 950 ℃, the constant temperature is kept, the excess phase is fully dissolved in the solid solution, and then the solution is rapidly cooled to obtain a supersaturated solid solution;
(5) milling a surface; after hot rolling and solution treatment, the surface of the square billet has a thicker oxide layer, the surface of the square billet needs to be milled, and the oxide layer on the surface is removed to obtain an alloy plate strip; the milling chip thickness is generally determined according to the surface oxidation degree, and is generally 1 mm;
(6) rough rolling; after the surface is milled, the alloy plate strip enters a cold rolling mill for multi-pass rolling at the rolling speed of 0.3 m/s; then, cutting the head of the rolled piece by 80mm, and then carrying out multi-pass rolling at the rolling speed of 0.8 m/s; the rolling thickness of the alloy plate strip is 1mm, and the rolling deformation is not less than 90%;
(7) aging treatment; the alloy plate strip after rough rolling enters a heat treatment bell-type furnace, and is heated to 450 ℃ and kept warm for 3 hours;
(8) surface treatment; after the aging is finished, the surface of the alloy plate strip is slightly oxidized, surface oxidation and impurities are removed in an acid washing mode, and the whole process is prevented from being collided;
(9) fine rolling; after the surface treatment is finished, the copper strip enters the rolling mill again, finish rolling is carried out, and the copper strip is rolled to the specification and the size required by the product;
(10) rolling; rolling the rolled steel coil;
(11) slitting; and cutting the copper strip according to the specification of the product, packaging and delivering to customers.
In the step (3), the cast rod is continuously heated on line before rolling, the heating speed is 13m/min, the heating furnace is divided into 4 sections, the furnace bodies are connected by a heat-insulating cover, the furnace chamber is protected by inert gas, the heating furnace adopts power feeding, and the heating speed is matched with the rolling speed. Before entering the hearth, the copper bar needs to be straightened by a flat roller straightening machine, and the straightness is less than or equal to 10 mm/m.
When the milling is carried out, after the depth of each milling pass is confirmed, a left milling procedure is carried out, the milling speed of the left milling is 70mm/min, after the left milling is finished, the milling amount of a cutter head is adjusted, the lower milling is carried out, the milling speed of the lower milling is 95mm/min, and the central lines of the milling cutter lines are on the same straight line as much as possible in the lower milling process; and after the lower milling is finished, adjusting the milling input of the cutter head, then carrying out right milling, wherein the milling input speed of the right milling is 140mm/min, after the right milling is finished, adjusting the milling input of the milling cutter, and then carrying out upper milling, wherein the milling input speed of the upper milling is 130 mm/min.
After finish rolling and before rolling, secondary aging treatment and correction are carried out on the alloy strip: and (3) carrying out secondary aging treatment on the finish-rolled alloy plate strip in a heat treatment bell-type furnace, wherein the aging temperature is 450 ℃, the heat preservation time is 5h, cooling the alloy plate strip along with the furnace after aging, and correcting the alloy plate strip.
When surface treatment is carried out, the washing liquid used for acid washing is formed by mixing phosphoric acid with the concentration of 85%, citric acid with the concentration of 100g/L and deionized water according to the volume ratio of 2.5:5: 80.
Pickling and soaking for 2.5 minutes to treat the surface of the alloy plate strip; and after pickling, washing the surface of the alloy plate strip with water, and then drying the surface by blowing.
Example 2
A rolling method of Cu-Cr series alloy plate strip, the chemical composition of the alloy is Cr: 0.6-1.2 percent of Fe, less than or equal to 0.10 percent of Si, less than or equal to 0.1 percent of Pb, and the balance of copper and inevitable impurities; the rolling method comprises the following steps:
(1) preparing materials; preparing raw materials and proportioning according to the chemical composition of the alloy, wherein the adding sequence of the alloy is as follows: firstly, melting Cu, preserving heat for 15min after melting, then adding Zr, and then fully degassing and removing impurities;
(2) upward continuous casting; producing an alloy casting rod with the diameter of phi 60 by using an upward continuous casting method, and collecting the alloy casting rod into a coil; the up-drawing continuous casting is characterized in that a tubular copper sleeve (graphite crystallizer) is extended into and immersed under the liquid level of molten alloy, the upper end of the tubular copper sleeve is communicated with a vacuum pump, and under the action of vacuum negative pressure, the alloy liquid is slowly sucked upwards in the crystallizer and is solidified into a bright cast ingot near a lifting device.
It is characterized in that: 1) the smelting alloy is directly made into rod blank, and the smelting and continuous casting processes are all carried out under the vacuum condition, and the obtained rod blank belongs to an oxygen-free rod (oxygen content is less than 0.001 percent), and is suitable for smelting and casting various copper and copper alloy wire blanks. 2) The alloy liquid level is basically stable in the production process of the upper-leading smelting furnace, the alloy preparation proportion is easy to control, and the component uniformity is good. 3) The upper-guiding smelting furnace heats the lower induction coil, the heat source comes from the lower part of the hearth, and the melt in the furnace is simultaneously acted by electromagnetic force and heat force and is in continuous turbulent stirring, thus being beneficial to the homogenization of alloy components. 4) The alloy liquid level is stable in the production process of the upper-guide smelting furnace, and the situation that the refractory materials are washed and fall off when the continuous casting and continuous rolling alloy liquid flows through the chute, the tundish and the ladle is avoided, so that non-metallic inclusions are not easy to appear in an upper-guide casting blank, and the purity of a rod blank is facilitated. 5) The up-drawing continuous casting equipment has small furnace volume which is generally about 3-7 tons, the cost of disassembling and washing the furnace is low, the variety of the alloy is flexibly changed, and the up-drawing continuous casting equipment is suitable for the requirements of discontinuous and small-batch supply.
(3) Hot continuous rolling the square billet; carrying out paying off, straightening and online heating on the alloy casting rod with the diameter phi of 60 at the heating temperature of 950 ℃, and entering a hot rolling mill for hot rolling; rolling the mixture into a square billet with the width of 50 mm and the thickness of 15 mm by a hot rolling mill;
(4) solution treatment; the solution treatment is a heat treatment mode, the alloy is heated to 800 ℃, the temperature is kept constant, the excess phase is fully dissolved in the solid solution, and then the solution is rapidly cooled to obtain a supersaturated solid solution;
(5) milling a surface; after hot rolling and solution treatment, the surface of the square billet has a thicker oxide layer, the surface of the square billet needs to be milled, and the oxide layer on the surface is removed to obtain an alloy plate strip; the milling chip thickness is generally determined according to the surface oxidation degree, and is generally 1 mm;
(6) rough rolling; after the surface is milled, the alloy plate strip enters a cold rolling mill for multi-pass rolling at the rolling speed of 0.6 m/s; then, cutting the head of the rolled piece by 70mm, and then carrying out multi-pass rolling at the rolling speed of 1 m/s; the rolling thickness of the alloy plate strip is 1mm, and the rolling deformation is not less than 90%;
(7) aging treatment; the alloy plate strip after rough rolling enters a heat treatment bell-type furnace, and is heated to 400 ℃ and kept warm for 3 hours;
(8) surface treatment; after the aging is finished, the surface of the alloy plate strip is slightly oxidized, surface oxidation and impurities are removed in an acid washing mode, and the whole process is prevented from being collided;
(9) fine rolling; after the surface treatment is finished, the copper strip enters the rolling mill again, finish rolling is carried out, and the copper strip is rolled to the specification and the size required by the product;
(10) rolling; rolling the rolled steel coil;
(11) slitting; and cutting the copper strip according to the specification of the product, packaging and delivering to customers.
In the step (3), the alloy cast rod is initially processed to the straightening size during straightening, and the diameter size in the straightening size is 0.1mm larger than that of the straightened alloy cast rod; placing the alloy cast rod after preliminary processing into a straightening die, wherein the aperture of a straightening hole of the straightening die is 0.1mm smaller than the size of the alloy cast rod to be straightened; and pressing the preliminarily processed alloy cast rod into the straightening hole, and finally pressing the preliminarily processed alloy cast rod out from the direction opposite to the pressing direction of the straightening die to obtain the straightened alloy cast rod.
When the milling is carried out, after the depth of each milling pass is confirmed, a left milling procedure is firstly carried out, the milling speed of the left milling is 65mm/min, after the left milling is finished, the milling input quantity of a cutter head is adjusted, the lower milling is carried out, the milling speed of the lower milling is 100mm/min, and the milling thread central lines are on the same straight line as much as possible in the lower milling process; and after the lower milling is finished, adjusting the milling input of the cutter head, then carrying out right milling, wherein the milling input speed of the right milling is 130mm/min, after the right milling is finished, adjusting the milling input of the milling cutter, and then carrying out upper milling, wherein the milling input speed of the upper milling is 140 mm/min.
After finish rolling and before rolling, secondary aging treatment and correction are carried out on the alloy strip: and (3) carrying out secondary aging treatment on the finish-rolled alloy plate strip in a heat treatment bell-type furnace, wherein the aging temperature is 440 ℃, the heat preservation time is 8 hours, cooling the alloy plate strip along with the furnace after aging, and correcting the alloy plate strip.
When surface treatment is carried out, the washing liquid used for acid washing is formed by mixing phosphoric acid with the concentration of 85%, citric acid with the concentration of 100g/L and deionized water according to the volume ratio of 2.5:5: 70.
Pickling and treating the surface of the alloy plate strip by soaking for 3 minutes; and after pickling, washing the surface of the alloy plate strip with water, and then drying the surface by blowing.
Example 3
A rolling method of Cu-Cr series alloy plate strip, the chemical composition of the alloy is Cr: 0.2 to 0.7%, Fe: 0.02% -0.2%, Si: 0.1 to 0.10 percent, and the balance of copper and inevitable impurities; the rolling method comprises the following steps:
(1) preparing materials; preparing raw materials and proportioning according to the chemical composition of the alloy, wherein the adding sequence of the alloy is as follows: firstly, melting Cu, preserving heat for 18min after melting, then adding Cr, and then fully degassing and removing impurities;
(2) upward continuous casting; producing an alloy casting rod with the diameter of 50 by using an upward continuous casting method, and collecting the alloy casting rod into a coil; the up-drawing continuous casting is characterized in that a tubular copper sleeve (graphite crystallizer) is extended into and immersed under the liquid level of molten alloy, the upper end of the tubular copper sleeve is communicated with a vacuum pump, and under the action of vacuum negative pressure, the alloy liquid is slowly sucked upwards in the crystallizer and is solidified into a bright cast ingot near a lifting device.
It is characterized in that: 1) the smelting alloy is directly made into rod blank, and the smelting and continuous casting processes are all carried out under the vacuum condition, and the obtained rod blank belongs to an oxygen-free rod (oxygen content is less than 0.001 percent), and is suitable for smelting and casting various copper and copper alloy wire blanks. 2) The alloy liquid level is basically stable in the production process of the upper-leading smelting furnace, the alloy preparation proportion is easy to control, and the component uniformity is good. 3) The upper-guiding smelting furnace heats the lower induction coil, the heat source comes from the lower part of the hearth, and the melt in the furnace is simultaneously acted by electromagnetic force and heat force and is in continuous turbulent stirring, thus being beneficial to the homogenization of alloy components. 4) The alloy liquid level is stable in the production process of the upper-guide smelting furnace, and the situation that the refractory materials are washed and fall off when the continuous casting and continuous rolling alloy liquid flows through the chute, the tundish and the ladle is avoided, so that non-metallic inclusions are not easy to appear in an upper-guide casting blank, and the purity of a rod blank is facilitated. 5) The up-drawing continuous casting equipment has small furnace volume which is generally about 3-7 tons, the cost of disassembling and washing the furnace is low, the variety of the alloy is flexibly changed, and the up-drawing continuous casting equipment is suitable for the requirements of discontinuous and small-batch supply.
(3) Hot continuous rolling the square billet; carrying out paying off, straightening and online heating on the alloy cast rod with the phi of 50 at the heating temperature of 950 ℃, and entering a hot rolling mill for hot rolling; rolling the mixture into a square billet with the width of 100mm and the thickness of 12 mm by a hot rolling mill;
(4) solution treatment; the solution treatment is a heat treatment mode, the alloy is heated to 900 ℃, the temperature is kept constant, the excess phase is fully dissolved in the solid solution, and then the alloy is rapidly cooled to obtain a supersaturated solid solution;
(5) milling a surface; after hot rolling and solution treatment, the surface of the square billet has a thicker oxide layer, the surface of the square billet needs to be milled, and the oxide layer on the surface is removed to obtain an alloy plate strip; the milling chip thickness is generally determined according to the surface oxidation degree, and is generally 1 mm;
(6) rough rolling; after the surface is milled, the alloy plate strip enters a cold rolling mill for multi-pass rolling, and the rolling speed is 0.5 m/s; then, cutting the head of the rolled piece by 75mm, and then carrying out multi-pass rolling at the rolling speed of 0.9 m/s; the rolling thickness of the alloy plate strip is 1mm, and the rolling deformation is not less than 90%;
(7) aging treatment; the alloy plate strip after rough rolling enters a heat treatment bell-type furnace, and is heated to 420 ℃ and kept warm for 3 hours;
(8) surface treatment; after the aging is finished, the surface of the alloy plate strip is slightly oxidized, surface oxidation and impurities are removed in an acid washing mode, and the whole process is prevented from being collided;
(9) fine rolling; after the surface treatment is finished, the copper strip enters the rolling mill again, finish rolling is carried out, and the copper strip is rolled to the specification and the size required by the product;
(10) rolling; rolling the rolled steel coil;
(11) slitting; and cutting the copper strip according to the specification of the product, packaging and delivering to customers.
In the step (3), the cast rod is continuously heated on line before rolling, the heating speed is 13m/min, the heating furnace is divided into 4 sections, the furnace bodies are connected by a heat-insulating cover, the furnace chamber is protected by inert gas, the heating furnace adopts power feeding, and the heating speed is matched with the rolling speed. Before entering the hearth, the copper bar needs to be straightened by a flat roller straightening machine, and the straightness is less than or equal to 10 mm/m.
When the milling is carried out, after the depth of each milling pass is confirmed, a left milling procedure is firstly carried out, the milling speed of the left milling is 68mm/min, after the left milling is finished, the milling input quantity of a cutter head is adjusted, the lower milling is carried out, the milling speed of the lower milling is 98mm/min, and the milling thread central lines are on the same straight line as much as possible in the lower milling process; and after the lower milling is finished, adjusting the milling input of the cutter head, then carrying out right milling, wherein the milling input speed of the right milling is 135mm/min, after the right milling is finished, adjusting the milling input of the milling cutter, and then carrying out upper milling, wherein the milling input speed of the upper milling is 135 mm/min.
After finish rolling and before rolling, secondary aging treatment and correction are carried out on the alloy strip: and (3) carrying out secondary aging treatment on the finish-rolled alloy plate strip in a heat treatment bell-type furnace, wherein the aging temperature is 445 ℃, the heat preservation time is 6h, cooling along with the furnace after aging, and correcting the alloy plate strip.
When surface treatment is carried out, the washing liquid used for acid washing is formed by mixing phosphoric acid with the concentration of 85%, citric acid with the concentration of 100g/L and deionized water according to the volume ratio of 2.5:5: 75.
Pickling and soaking for 2.8 minutes to treat the surface of the alloy plate strip; and after pickling, washing the surface of the alloy plate strip with water, and then drying the surface by blowing.
In addition, the compound lubricating oil is used in the finish rolling, and the compound lubricating oil comprises the following components in parts by weight: 65-68% of CE-grade lubricating oil, 8.5-9% of dioctyl sebacate, 4.5-5% of coconut oil fatty acid, 2-2.5% of antioxidant and anti-glue agent T5012, 0.02-0.05% of benzisothiazolin-3-one, 0.02-0.05% of polydimethylsiloxane, 2-2.5% of benzotriazol, 8-26% of DL 3218%, 1.0-3.0% of tri (2-hydroxyethyl) amine and 1-1.5% of polyisobutylene.
The compound lubricating oil has necessary separating medium, and has the performances of reducing friction and resisting abrasion; the chemical properties of the rolled piece and the roller are stable; can prevent the generation of adherends on the rolling mill and the rolled product, has good descaling performance, and fully ensures the effect of finish rolling.
Further, in order to achieve better technical effects, the technical solutions in the above embodiments may be combined arbitrarily to meet various requirements of practical applications.
And respectively carrying out performance detection on the tensile mechanical property at room temperature, the conductivity and the like on the alloy finished products of the examples 1-3 and the comparative example.
Tensile test at room temperature according to GB/T228.1-2010 part 1 of tensile test for metallic materials: the room temperature test method is carried out on an electronic universal mechanical property testing machine, and for examples 1-3 and comparative examples, plate samples with the proportionality coefficient of 2.0mm are adopted, and the tensile speed is 5 mm/min.
The results of the performance tests of examples 1-3 and comparative examples are shown in Table 1.
| Examples and comparative examples | Yield strength/MPa | hardness/HV | Modulus of elasticity/GPa |
| Example 1 | 605 | 180 | 152 |
| Example 2 | 608 | 181 | 153 |
| Example 3 | 607 | 182 | 151 |
| Comparative example C18200 | 425 | 135 | 125 |
According to the embodiment, the equipment investment is small, and the production cost is low; the yield is high, and the quality is stable; flexible production, various product types, strong market adaptability and the like.
The method of the invention can reduce the production cost, improve the product quality and the qualification rate of finished products, and greatly meet the market demand.
By optimizing the components and the process of the alloy, the provided copper-chromium alloy has good comprehensive performance, realizes good yield strength, elastic property and creep resistance, and the comprehensive performance of the copper-chromium alloy meets the machining performance requirement of the product.
The alloy prepared by the method has finer grain size, can effectively control the precipitation and uniform distribution of solid solution, and has important effects on improving the strength, hardness and softening resistance temperature of the alloy.
The foregoing is directed to preferred embodiments of the present invention, other and further embodiments of the invention may be devised without departing from the basic scope thereof, and the scope thereof is determined by the claims that follow. However, any simple modification, equivalent change and modification of the above embodiments according to the technical essence of the present invention are within the protection scope of the technical solution of the present invention.
Claims (6)
1. A rolling method of Cu-Cr series alloy plate strip is characterized in that the chemical composition of the alloy is Cr: 0.1-1.5%, Zr: 0.03 to 1.8 percent of Fe, less than or equal to 0.8 percent of Si, less than or equal to 1.5 percent of Pb, less than or equal to 0.3 percent of Sn, and the balance of copper and inevitable impurities; the rolling method comprises the following steps:
(1) preparing materials; preparing raw materials and proportioning according to the chemical composition of the alloy, wherein the adding sequence of the alloy is as follows: melting Cu, preserving heat for 15-20 min after melting, simultaneously adding Cr and Zr, and then fully degassing and removing impurities;
(2) upward continuous casting; producing an alloy casting rod with the diameter of phi 30-phi 60 by using an upward continuous casting method, and collecting the alloy casting rod into a coil;
(3) hot continuous rolling the square billet; carrying out paying off, straightening and online heating on the alloy cast rod with the diameter of phi 30-60 at the heating temperature of 950 ℃, and entering a hot rolling mill for hot rolling; rolling the blank into a square blank with the width of 50-120 mm and the thickness of 10-15 mm by a hot rolling mill;
(4) solution treatment; heating the alloy to 800-950 ℃, keeping the constant temperature, fully dissolving the excess phase in the solid solution, and rapidly cooling to obtain a supersaturated solid solution;
(5) milling a surface; after hot rolling and solution treatment, the surface of the square billet has a thicker oxide layer, the surface of the square billet needs to be milled, and the oxide layer on the surface is removed to obtain an alloy plate strip;
(6) rough rolling; after the surface of the alloy plate strip is milled, the alloy plate strip enters a cold rolling mill to be rolled for multiple times, and the rolling speed is 0.3-0.6 m/s; then, cutting the head of the rolled piece by 70-80 mm, and then carrying out multi-pass rolling at the rolling speed of 0.8-1 m/s; the rolling thickness of the alloy plate strip is 1mm, and the rolling deformation is not less than 90%;
(7) aging treatment; feeding the alloy plate strip subjected to rough rolling into a heat treatment bell-type furnace, heating to 400-450 ℃, and preserving heat for 3 hours;
(8) surface treatment; removing surface oxidation and impurities in an acid washing mode;
(9) fine rolling; after the surface treatment is finished, the copper strip enters the rolling mill again, finish rolling is carried out, and the copper strip is rolled to the specification and the size required by the product;
(10) rolling; rolling the rolled steel coil;
(11) slitting; and cutting the copper strip according to the specification of the product, packaging and delivering to customers.
2. A Cu-Cr series alloy strip rolling method according to claim 1, wherein in said step (3), the cast bar is continuously heated in-line at a heating rate of 13m/min,
the heating furnace is divided into 4 sections, the furnace bodies are connected by a heat-insulating cover, the interior of a hearth is protected by inert gas, the heating furnace adopts power feeding, and the heating speed is matched with the rolling speed. Before entering the hearth, the copper bar needs to be straightened by a flat roller straightening machine, and the straightness is less than or equal to 10 mm/m.
3. The method for rolling a Cu — Cr series alloy plate strip according to claims 1 to 2, wherein when milling is performed, after the depth of each milling pass is confirmed, a left milling process is performed, the milling speed of the left milling is 65 to 70mm/min, after the left milling is completed, the milling amount of a cutter head is adjusted, and a down milling is performed, the milling speed of the down milling is 95 to 100mm/min, and the milling groove center lines are aligned on the same line as much as possible during the down milling; and after the lower milling is finished, adjusting the milling amount of the cutter head, then carrying out right milling, wherein the milling speed of the right milling is 130-140 mm/min, after the right milling is finished, adjusting the milling amount of the milling cutter, and then carrying out upper milling, wherein the milling speed of the upper milling is 130-140 mm/min.
4. The method of rolling a Cu — Cr series alloy plate strip according to claim 3, wherein the alloy plate strip is further subjected to secondary aging treatment and straightening after the finish rolling and before the coiling: and carrying out secondary aging treatment on the finish-rolled alloy plate strip in a heat treatment bell-type furnace, wherein the aging temperature is 440-450 ℃, the heat preservation time is 5-8 h, cooling the alloy plate strip along with the furnace after aging, and correcting the alloy plate strip.
5. A Cu-Cr series alloy strip rolling method according to claim 3 to 4, wherein a washing solution used for pickling is a mixture of 85% phosphoric acid, 100g/L citric acid and deionized water in a volume ratio of 2.5:5 (70-80) in surface treatment.
6. The rolling method of a Cu-Cr series alloy strip according to claim 5, wherein the pickling treats the surface of the alloy strip by soaking for 2.5 to 3 minutes; and after pickling, washing the surface of the alloy plate strip with water, and then drying the surface by blowing.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010575167.6A CN111621666B (en) | 2020-06-22 | 2020-06-22 | Rolling method of Cu-Cr series alloy plate strip |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010575167.6A CN111621666B (en) | 2020-06-22 | 2020-06-22 | Rolling method of Cu-Cr series alloy plate strip |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN111621666A true CN111621666A (en) | 2020-09-04 |
| CN111621666B CN111621666B (en) | 2021-05-07 |
Family
ID=72258413
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010575167.6A Active CN111621666B (en) | 2020-06-22 | 2020-06-22 | Rolling method of Cu-Cr series alloy plate strip |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN111621666B (en) |
Cited By (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301251A (en) * | 2020-09-25 | 2021-02-02 | 中铜华中铜业有限公司 | Aging strengthening type Cu-Cr-Zr alloy plate/strip and preparation method thereof |
| CN112570486A (en) * | 2020-10-14 | 2021-03-30 | 陕西斯瑞新材料股份有限公司 | CuCrZr plate strip metal rolling process |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0023362A1 (en) * | 1979-07-30 | 1981-02-04 | Kabushiki Kaisha Toshiba | A method for manufacturing an electrically conductive copper alloy material |
| CN1598021A (en) * | 2003-07-09 | 2005-03-23 | 日矿金属加工株式会社 | High strength high conductive copper alloy with good extensibility |
| CN104342575A (en) * | 2014-10-11 | 2015-02-11 | 烟台万隆真空冶金股份有限公司 | Electrified railway chromium-zirconium-copper contact line and machining process thereof |
| CN108179305A (en) * | 2017-12-25 | 2018-06-19 | 浙江力博实业股份有限公司 | A kind of continuously extruded method for preparing Cu-Cr-Zr alloy bar |
| CN108526422A (en) * | 2018-05-23 | 2018-09-14 | 中南大学 | A kind of production method of high-strength high-conductivity heat-resistant copper |
-
2020
- 2020-06-22 CN CN202010575167.6A patent/CN111621666B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| EP0023362A1 (en) * | 1979-07-30 | 1981-02-04 | Kabushiki Kaisha Toshiba | A method for manufacturing an electrically conductive copper alloy material |
| CN1598021A (en) * | 2003-07-09 | 2005-03-23 | 日矿金属加工株式会社 | High strength high conductive copper alloy with good extensibility |
| CN104342575A (en) * | 2014-10-11 | 2015-02-11 | 烟台万隆真空冶金股份有限公司 | Electrified railway chromium-zirconium-copper contact line and machining process thereof |
| CN108179305A (en) * | 2017-12-25 | 2018-06-19 | 浙江力博实业股份有限公司 | A kind of continuously extruded method for preparing Cu-Cr-Zr alloy bar |
| CN108526422A (en) * | 2018-05-23 | 2018-09-14 | 中南大学 | A kind of production method of high-strength high-conductivity heat-resistant copper |
Non-Patent Citations (2)
| Title |
|---|
| 国家机械工业委员会: "《有色金属熔炼工工艺学》", 31 December 1988, 机械工业出版社 * |
| 赵晓栋: "《海洋腐蚀与生物污损防护技术》", 30 April 2017, 华中科技大学出版社 * |
Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112301251A (en) * | 2020-09-25 | 2021-02-02 | 中铜华中铜业有限公司 | Aging strengthening type Cu-Cr-Zr alloy plate/strip and preparation method thereof |
| CN112570486A (en) * | 2020-10-14 | 2021-03-30 | 陕西斯瑞新材料股份有限公司 | CuCrZr plate strip metal rolling process |
| CN112570486B (en) * | 2020-10-14 | 2022-12-27 | 陕西斯瑞新材料股份有限公司 | CuCrZr strip metal rolling process |
Also Published As
| Publication number | Publication date |
|---|---|
| CN111621666B (en) | 2021-05-07 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN101845599B (en) | Weathering steel and manufacturing method thereof | |
| CN111254322B (en) | Preparation method of aluminum foil material for thinning double-sided photocell tab | |
| CN101224544B (en) | Producing method of lead frame cuprum alloy strip with high strength and conductivity | |
| CN110438396B (en) | Low-compression-ratio and high-performance Q345R ultra-wide and ultra-thick container steel and manufacturing method thereof | |
| CN111621666B (en) | Rolling method of Cu-Cr series alloy plate strip | |
| CN111519116B (en) | Preparation method of large-length solderless copper-chromium-zirconium contact line | |
| CN113649415A (en) | Preparation process of high-strength aluminum alloy welding wire | |
| CN103305748A (en) | Non-oriented electrical steel plate and manufacturing method thereof | |
| CN105349884A (en) | Ti-contained hot-rolled and acid-pickled enameled steel strip and production method thereof | |
| CN104726670B (en) | Method for preparing high-magnetic-induction oriented silicon steel from short-process medium and thin slabs | |
| CN113751679B (en) | Manufacturing method of cobalt-free maraging steel cold-rolled thin strip | |
| US4715905A (en) | Method of producting thin sheet of high Si-Fe alloy | |
| CN110904392A (en) | Ultra-low carbon anti-pressure thin-specification cold-rolled sheet for battery shell and production method thereof | |
| CN109338238B (en) | Low-carbon steel for stamping based on thin strip casting and rolling and manufacturing method thereof | |
| CN101550515A (en) | Copper-containing high-strength and high-ductility high manganese steel and production method thereof | |
| CN112522593A (en) | Thin 30CrMo hot rolled steel plate/strip and production method thereof | |
| CN113174532B (en) | Preparation method of high-quenching-hardness martensitic stainless steel coil for measuring tool | |
| CN109022958A (en) | A kind of manufacturing method of 5083 aluminium alloy thick plate peculiar to vessel | |
| CN113981338B (en) | Structure control method of iron-rich aluminum alloy | |
| CN113362980B (en) | Chromium-zirconium-copper alloy contact wire and preparation method and application thereof | |
| CN113462968B (en) | Process for manufacturing nickel-saving austenitic stainless steel | |
| CN113308620B (en) | Copper-chromium-zirconium alloy and preparation method thereof | |
| CN113369331A (en) | Continuous casting and rolling preparation method of 6061 aluminum alloy round rod | |
| CN106367679B (en) | A kind of steel copper composite base-material steel and its manufacture method | |
| CN106756578B (en) | SAE8660 hot-rolled sheet and production process |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant |