CN111763846A - Method for manufacturing Cu-Cr-Zr alloy stranded wire for electrified railway - Google Patents
Method for manufacturing Cu-Cr-Zr alloy stranded wire for electrified railway Download PDFInfo
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- H01B1/00—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors
- H01B1/02—Conductors or conductive bodies characterised by the conductive materials; Selection of materials as conductors mainly consisting of metals or alloys
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Abstract
The invention discloses a method for manufacturing a Cu-Cr-Zr alloy stranded wire for an electrified railway, which comprises the following steps of S1: selecting and preparing corresponding raw materials according to components; s2 smelting and casting: according to the proportion of each element and the respective specific adding mode, the raw materials are put into a smelting furnace for smelting, and upward casting is started after heat preservation, so that a copper rod blank is obtained; s3 rolling: heating and rolling the copper rod blank to obtain a hot rolled blank; s4 solution heat treatment: carrying out solution heat treatment on the hot rolled blank, and carrying out water quenching after heat preservation; s5 cold rolling: carrying out multi-pass cold rolling on the blank subjected to the solution heat treatment to obtain a cold-rolled blank; s6 aging heat treatment: carrying out aging heat treatment on the cold-rolled blank; s7 stranding: and performing multi-pass drawing on the aged cold-rolled blank to obtain a single stranded wire finished product, and twisting multiple wires to obtain a finished stranded wire. The alloy stranded wire prepared by the preparation method disclosed by the invention is excellent in performance and structure, high in material utilization rate and low in energy consumption, and the industrial production of the Cu-Cr-Zr railway stranded wire is realized.
Description
Technical Field
The invention relates to the technical field of strand manufacturing, in particular to a method for manufacturing a Cu-Cr-Zr alloy strand for an electrified railway.
Background
The high-speed railway becomes the main development trend of the electrified railway, the performance requirement of the high-speed electrified twisted wire is continuously improved along with the rapid development of the electrified railway, the well-known and relatively ideal copper alloy twisted wire material is an aging-strengthened Cu-Cr-Zr alloy, the high strength and the high conductivity are always important indexes of the performance requirement of the twisted wire, for the copper alloy stranded wire, the contradiction between high strength and high conductivity exists for a long time, in various methods for preparing materials, the strength and the conductivity of the copper alloy can be well combined only by utilizing aging precipitation strengthening, so that the stranded wires developed in various countries of the world can not meet the requirements of the development of high-speed railways on the stranded wire materials, the high-speed electrified railway in China is developing rapidly, and obviously stranded wires have a very large market at home and abroad.
At present, the main preparation methods of the Cu-Cr-Zr alloy comprise vacuum induction melting, down-leading semi-continuous casting and the like, are limited by a melting environment, the melted Cu-Cr-Zr alloy can not effectively solve the problems of distribution and uniformity of main alloy elements of Cr and Zr in a casting blank, and the problems of high impurity content, high gas element content, relatively thick as-cast structure and the like of the casting blank exist, so that the performance of the alloy is reduced. Most importantly, the continuous production of large length and large weight cannot be realized, the production efficiency is low, the production process flow is long, the production cost is high, and the like, and the product requirements of the electrified railway stranded wire cannot be met.
In view of the above, research and development of a new generation of stranded wire products must be conducted on a high-starting point, high-quality base point as soon as possible, and it is required to develop a method for manufacturing a high-quality continuously cast Cu-Cr-Zr alloy stranded wire to optimize the above technical problems.
Disclosure of Invention
In order to solve the technical problem, the invention provides a method for manufacturing a Cu-Cr-Zr alloy stranded wire for an electrified railway.
The technical scheme of the invention is as follows: a manufacturing method of a Cu-Cr-Zr alloy stranded wire for an electrified railway comprises the following steps:
s1, batching: proportioning each alloy element according to the component requirement of the Cu-Cr-Zr alloy material, and selecting and preparing corresponding raw materials;
s2 smelting and casting: according to the proportion of each element and the respective specific adding mode, the raw materials are put into a smelting furnace for smelting, the raw materials are fed and heated while entering a feeding area, the liquid level control area of a casting machine is heated after the raw materials are smelted, argon is filled for protection in the whole process, upward casting is started after heat preservation is carried out for 1-2 hours, the sufficient heat preservation time of the alloy solution in the natural deoxidation environment of a carbon-based crucible system is ensured, and copper rod blanks with phi of 25-35mm are obtained;
s3 rolling: heating and rolling the copper rod blank with the diameter of 25-35mm at the heating temperature of 800-;
s4 solution heat treatment: carrying out solid solution heat treatment on the hot rolled blank with the diameter of 10-20mm, carrying out water quenching at the solid solution temperature of 850-1000 ℃ and the heat preservation time of 1-2 hours; alloying elements are dissolved in the copper matrix in a solid solution heat treatment mode, and then second-phase solute atoms and compounds are precipitated through the aging heat treatment of the step S6, so that the effect of strengthening the alloy is achieved;
s5 cold rolling: carrying out multi-pass cold rolling or cold drawing on the blank phi 10-20mm after the solution heat treatment to obtain a cold-rolled blank phi 8-phi 10 mm;
s6 aging heat treatment: carrying out aging heat treatment on the cold-rolled blank with the diameter of 8-10 mm, wherein the aging temperature is 500-; precipitating second phase solute atoms and compounds through aging heat treatment to achieve the effect of strengthening the alloy by matching with the solution heat treatment of the step S4;
s7 stranding: and further carrying out multi-pass drawing on the aged phi 8-phi 10mm cold-rolled blank to obtain a phi 2.25-phi 3.15mm stranded wire single-wire finished product, and stranding phi 2.25-phi 3.15mm multiple wires to obtain a finished stranded wire.
The manufacturing method of the alloy stranded wire is used for preparing the Cu-Cr-Zr alloy based on continuous casting of an up-drawing method, batch production of stranded wire products is realized, the prepared alloy stranded wire is excellent in performance and structure, high in material utilization rate and low in energy consumption, industrial production of the Cu-Cr-Zr railway stranded wire is realized, and the bottleneck problem of restricting development of high-speed railways is solved.
Further, in the step S1, the Cu-Cr-Zr alloy material includes the following components by mass percent: cr: 0.2-1.0%, Zr 0.02-0.2%, Cu: and (4) the balance. On the premise that the use of the product is in accordance with the national standard, the proportion of the Cu-Cr-Zr alloy is reduced to a narrower range through process optimization and the like so as to achieve better use performance, for example, the actual components are as follows: 0.8% -0.9%, Zr: 0.08-0.10%, Cu: and the residual quantity is that the tensile strength of the product can reach 540-600MPa before and after twisting in actual detection, and the electric conductivity is 90-94% IACS.
Further, the specific adding manner of each element in step S2 is specifically: cr and Zr are added in the form of cored wires, and Cu is added in the form of oxygen-free copper rods. Because Cr and Zr are easily melted at high temperature and react with oxygen to form oxide inclusions, the material with very uniform components can be obtained in a core-spun wire mode and the whole melting process is carried out in a sealed atmosphere protection environment, the defects of oxide inclusions and the like caused by contact with air are avoided, and the consumption of alloy elements is reduced.
Further, in the step S2, a Cu-Cr-Zr alloy pulling-up device is used for the pulling-up casting, and both the heating element and the crucible of the Cu-Cr-Zr alloy pulling-up device are made of graphite. Can improve temperature homogeneity and casting system stability through the graphite material, the cooperation feeding mode adopts the cored wire form to add simultaneously, draws the casting to have more excellent casting performance with the tradition.
Further, the drawing-up speed of the drawing-up casting in the step S2 is controlled at 800-1400 mm/min. The copper rod blank with good comprehensive performance can be obtained by controlling the upward drawing speed within the range.
Further, in the step S2, the up-drawing casting is performed by filling argon gas to isolate oxygen and performing water coolingHowever, the cooling water is continuously electrified with direct current, and the current density is 0.35-0.75A/cm2And the water inlet temperature is controlled at 21-24 ℃; wherein the cooling water is distilled water containing potassium nitrate with the mass concentration of 1.7-4.3%. Micro-current is carried by cooling water and the current is effectively introduced by the matching of potassium nitrate, so that the internal crystal orientation structure of the precipitation hardening alloy is more uniform in the upward casting and cooling process, and the surface tensile strength and toughness are improved;
further, in the step S4, the water quenching is performed by using distilled water containing special preparation, specifically:
1) selecting distilled water containing a special preparation with the mass concentration of 4.5-5.8%, extending the hot rolled blank with the diameter of 10-20mm into an annular fog outlet area formed by the fog produced by an annular barrel, and cooling to 350-;
2) and then continuously extending the ring-shaped barrel into a water deep tank below the ring-shaped barrel, and cooling the ring-shaped barrel to room temperature, wherein the water deep tank is filled with distilled water containing special preparation with the mass concentration of 1.5-2.3%.
The annular barrel and the water depth groove are spliced up and down in a sealing manner, a plurality of groups of atomizing nozzles are arranged on the inner wall of the annular barrel at equal intervals in the circumferential direction, a first liquid storage box and a second liquid storage box which are used for storing distilled water containing special preparations are respectively arranged on the side wall of one side of the annular barrel and the side wall of one side of the water depth groove, a water pump is arranged on the side wall of the upper end of the annular barrel, one end of the water pump is connected with the first liquid storage box through a pipeline, and the other end of the water pump is communicated with a hollow cavity; a liquid outlet is arranged on the side wall of the other side of the water depth groove;
through the water quenching treatment, the Cu-Cr-Zr alloy is subjected to water quenching treatment by utilizing annular fog cold wrapping for cooling for one section, then is cooled to room temperature through soaking liquid, and is matched with distilled water with different contents of the special preparation for carrying out water quenching treatment on the Cu-Cr-Zr alloy, so that the tensile strength, the conductivity and other related properties of the Cu-Cr-Zr alloy can be improved, and the using effect of the Cu-Cr-Zr alloy applied to the railway stranded wire is improved.
Further, the special preparation comprises the following components in percentage by mass: 10-15 parts of polyacrylamide, 3-7 parts of potassium chloride, 5-10 parts of polyvinyl alcohol and 1-3 parts of disodium ethylene diamine tetraacetate. The special agent formed by mixing the special agent with the distilled water according to the proportion and the distilled water according to the proportion can be effectively matched with the treatment process to carry out water quenching treatment on the Cu-Cr-Zr alloy, thereby improving the tensile strength, the conductivity and other related properties of the Cu-Cr-Zr alloy.
The invention has the beneficial effects that:
(1) the manufacturing method of the alloy stranded wire is used for preparing the Cu-Cr-Zr alloy based on continuous casting of an up-drawing method, batch production of stranded wire products is realized, the prepared alloy stranded wire is excellent in performance and structure, high in material utilization rate and low in energy consumption, industrial production of the Cu-Cr-Zr railway stranded wire is realized, and the bottleneck problem of restricting development of high-speed railways is solved.
(2) The adding mode of the alloy stranded wire preparation is carried out in a core-spun mode and the whole smelting process is carried out in a sealed atmosphere protection environment, so that a material with very uniform components can be obtained, the defects of oxide inclusion and the like caused by contact with air are avoided, and the consumption of alloy elements is reduced.
(3) According to the invention, through water quenching treatment, the Cu-Cr-Zr alloy is subjected to water quenching treatment by distilled water with different content special preparations, and annular fog cooling and soaking water cooling are correspondingly matched, so that the tensile strength, the conductivity and other related properties of the Cu-Cr-Zr alloy can be improved, and the use effect of the Cu-Cr-Zr alloy applied to the railway stranded wire is improved.
Drawings
Fig. 1 is a schematic view of a finished stranded wire end face structure 1 × 37 in an embodiment of the present invention.
Fig. 2 is a schematic view of a finished stranded wire end face structure 1 × 37 in an embodiment of the present invention.
Fig. 3 is a schematic view of the overall structure of a water quenching dedicated device in the embodiment of the invention.
Fig. 4 is an overall structural sectional view of a water quenching dedicated device in an embodiment of the present invention.
Wherein, 1-annular barrel, 11-atomizer, 12-first liquid storage box, 13-water pump, 14-hollow cavity, 2-water deep groove, 21-second liquid storage box, 22-liquid outlet.
Detailed Description
Example 1
A manufacturing method of a Cu-Cr-Zr alloy stranded wire for an electrified railway comprises the following steps:
s1, batching: proportioning the alloy elements according to the component requirements of the Cu-Cr-Zr alloy material, wherein the Cu-Cr-Zr alloy material comprises the following components in percentage by mass: cr: 0.85%, Zr: 0.09%, Cu: selecting and preparing corresponding raw materials for the rest;
s2 smelting and casting: according to the proportion of each element and the respective specific adding mode, raw materials are put into a smelting furnace for smelting, Cr and Zr are added in a core-spun wire mode, Cu is added in an oxygen-free copper rod mode, feeding is carried out, heating is carried out while feeding is carried out in a feeding area, a liquid level control area of a casting machine is carried out after the raw materials are smelted, argon is filled for protection in the whole process, upward casting is carried out after heat preservation is carried out for 1-2 hours, sufficient heat preservation time of an alloy solution is ensured to be obtained in a natural deoxidation environment of a carbon-based crucible system, and a copper rod blank with;
wherein, the heating element and the crucible of the up-casting machine used for up-casting are both made of graphite materials, the up-casting speed of the up-casting is controlled at 1200mm/min, the up-casting adopts the way of filling argon gas to isolate oxygen and adopts the way of water cooling to cool, and the water inlet temperature of the used cooling water is controlled at 23 ℃;
s3 rolling: heating and rolling the copper rod blank with the diameter of 25-35mm at 950 ℃ for multiple passes to obtain a hot rolled blank with the diameter of 10-20 mm;
s4 solution heat treatment: carrying out solid solution heat treatment on a hot rolled blank with the diameter of 10-20mm, wherein the solid solution temperature is 890 ℃, the heat preservation time is 1.5 hours, and carrying out water quenching;
s5 cold rolling: carrying out multi-pass cold rolling on the blank phi 10-20mm after the solution heat treatment to obtain a cold-rolled blank phi 8-phi 10 mm;
s6 aging heat treatment: carrying out aging heat treatment on cold-rolled blanks with the diameter of phi 8-phi 10mm at the aging temperature of 540 ℃ for 3-5 hours;
s7 stranding: and further carrying out multi-pass drawing on the aged phi 8-phi 10mm cold-rolled blank to obtain a phi 2.25-phi 3.15mm stranded wire single-wire finished product, and stranding phi 2.25-phi 3.15mm multiple wires to obtain a finished stranded wire shown in figure 1 or 2.
The manufacturing method of the alloy stranded wire is used for preparing the Cu-Cr-Zr alloy based on continuous casting of an up-drawing method, and realizes batch production of stranded wire products, the prepared alloy stranded wire is excellent in performance and structure, high in material utilization rate and low in energy consumption, the industrial production of the Cu-Cr-Zr railway stranded wire is realized, and the bottleneck problem of restricting the development of high-speed railways is solved.
Example 2
The present embodiment is substantially the same as embodiment 1, except that in step S1, the Cu — Cr — Zr alloy material comprises the following components in percentage by mass: cr: 0.8%, Zr: 0.08%, Cu: and (4) the balance.
Example 3
The present embodiment is substantially the same as embodiment 1, except that in step S1, the Cu — Cr — Zr alloy material comprises the following components in percentage by mass: cr: 0.9%, Zr: 0.10%, Cu: and (4) the balance.
Example 4
This example is substantially the same as example 1, except that direct current was continuously supplied to the cooling water used in the water cooling mode in step S2 at a current density of 0.55A/cm2And the water inlet temperature is controlled at 23 ℃; wherein the cooling water is distilled water containing potassium nitrate with a mass concentration of 3.7%.
The scheme also provides a special device for water quenching in the step S4, which specifically comprises the following steps:
as shown in fig. 3 and 4, the annular barrel 1 and the water depth groove 2 are formed by sealing and splicing up and down, a plurality of groups of atomizing nozzles 11 are arranged on the inner wall of the annular barrel 1 at equal intervals in the circumferential direction, a first liquid storage box 12 and a second liquid storage box 21 for storing distilled water containing special preparations are respectively arranged on the side walls of the annular barrel 1 and one side of the water depth groove 2, a water pump 13 is arranged on the side wall of the upper end of the annular barrel 1, one end of the water pump 13 is connected with the first liquid storage box 12 through a pipeline, and the other end of the water pump 13 is communicated with a hollow cavity 14 in the barrel wall of; a liquid outlet 22 is arranged on the side wall of the other side of the deep water tank 2; wherein, the water pump 13 is a commercially available water pump and the shape of the water pump is adjusted to meet the installation requirement of the device.
Example 5
This example is substantially the same as example 4, except that the water quenching in step S4 is performed by using distilled water containing a special preparation, and includes the following steps:
1) selecting distilled water containing 5.3% special preparation by mass concentration, extending the hot rolled blank with the diameter of 10-20mm into an annular fog outlet area formed by the fog production of the annular barrel 1, and cooling to 420 ℃;
2) then, the water is continuously extended into a water depth tank 2 below the annular barrel 1 and cooled to room temperature, and distilled water containing a special preparation with the mass concentration of 1.9% is filled in the water depth tank 2.
Wherein the special preparation comprises the following components in percentage by mass: 13 parts of polyacrylamide, 5 parts of potassium chloride, 7 parts of polyvinyl alcohol and 2 parts of disodium ethylene diamine tetraacetate.
Through the water quenching treatment, the Cu-Cr-Zr alloy is subjected to water quenching treatment by utilizing annular fog cold wrapping for cooling for one section, then is cooled to room temperature through soaking liquid, and is matched with distilled water with different contents of the special preparation for carrying out water quenching treatment on the Cu-Cr-Zr alloy, so that the tensile strength, the conductivity and other related properties of the Cu-Cr-Zr alloy can be improved, and the using effect of the Cu-Cr-Zr alloy applied to the railway stranded wire is improved.
Example 6
The present example is substantially the same as example 5, and is different from example 5 in the formulation group of the special preparation, specifically: the special preparation comprises the following components in percentage by mass: 10 parts of polyacrylamide, 3 parts of potassium chloride, 5 parts of polyvinyl alcohol and 1 part of disodium ethylene diamine tetraacetate.
Example 7
The present example is substantially the same as example 5, and is different from example 5 in the formulation group of the special preparation, specifically: the special preparation comprises the following components in percentage by mass: 15 parts of polyacrylamide, 7 parts of potassium chloride, 10 parts of polyvinyl alcohol and 3 parts of disodium ethylene diamine tetraacetate.
Cu-Cr-Zr alloy stranded wire performance test
First, experiment sample
Preparing Cu-Cr-Zr alloy stranded wires by the preparation methods of the embodiments 1 to 7, and performing sequential experimental grouping on the Cu-Cr-Zr alloy stranded wires, wherein the sequential experimental grouping is referred to as the experimental examples 1 to 7;
second, Experimental items
The tensile strength and the electrical conductivity of the experimental examples 1 to 7 were respectively tested as follows:
1) tensile strength: selecting a Cu-Cr-Zr alloy stranded wire sample of each experimental example, and performing a tensile test on a WDW-1 electronic universal testing machine according to GB228-2002 metal material room temperature tensile test method, wherein the test results are shown in the following table 1:
TABLE 1 tensile Strength testing of Cu-Cr-Zr alloy stranded wire samples
2) Conductivity: selecting a Cu-Cr-Zr alloy stranded wire sample of each experimental example, and carrying out conductivity test on each sample by using a metal conductivity eddy current measuring instrument FD101, wherein the experimental results are shown in the following table 2:
TABLE 2 conductivity testing of Cu-Cr-Zr alloy stranded wire samples
Third, conclusion of experiment
1) As can be seen from the test data in table 1,
comparing experimental examples 1-3, the tensile strength of experimental example 1 is relatively higher than that of experimental examples 2 and 3, and it can be seen that the component ratios of different Cu-Cr-Zr alloy stranded wires have certain influence on the tensile strength, wherein the ratio of Cu, Cr and Zr in the experimental example 1 is optimal;
comparing experimental examples 1 and 4, the tensile strength of the experimental example 4 is relatively higher than that of the experimental example 1, and it can be seen that adding potassium nitrate to cooling water and applying a certain weak direct current has a certain influence on the tensile strength, which may be related to quenching cooling but has little influence, wherein the tensile strength performance of the Cu-Cr-Zr alloy stranded wire prepared by the method of the embodiment 4 is better;
comparing experimental examples 4 and 5, the tensile strength of experimental example 5 is relatively higher than that of experimental example 4, and it can be seen that the tensile strength of the Cu-Cr-Zr alloy is affected by the water quenching treatment, wherein the tensile strength of the Cu-Cr-Zr alloy stranded wire prepared by the method of example 5 is better;
comparing the experimental examples 5-7, the tensile strength of the experimental example 5 is relatively higher than that of the experimental examples 6 and 7, and it can be seen that different special preparations have certain influence on the water quenching treatment effect, wherein the proportion of each component of the special preparation in the example 5 is optimal.
2) As can be seen from the test data in table 2,
compared with the experimental examples 1-3, the conductivity of the experimental example 1 is relatively higher than that of the experimental examples 2 and 3, and the component proportion of different Cu-Cr-Zr alloy stranded wires has certain influence on the conductivity, wherein the proportion of Cu, Cr and Zr in the experimental example 1 is optimal;
comparing experimental examples 1 and 4, the conductivity of experimental example 4 is relatively higher than that of experimental example 1, and it can be seen that adding potassium nitrate to cooling water and applying a certain weak direct current has no influence on the conductivity;
comparing experimental examples 4 and 5, the conductivity of experimental example 5 is relatively higher than that of experimental example 4, and it can be seen that the conductivity of the Cu-Cr-Zr alloy is influenced by the water quenching treatment, wherein the conductivity of the Cu-Cr-Zr alloy stranded wire prepared by the method of example 5 is better;
compared with the experimental examples 5-7, the conductivity of the experimental example 5 is relatively higher than that of the experimental examples 6 and 7, and different special preparations have certain influence on the water quenching treatment effect, wherein the proportion of each component of the special preparation in the example 5 is optimal.
Claims (9)
1. A manufacturing method of a Cu-Cr-Zr alloy stranded wire for an electrified railway is characterized by comprising the following steps:
s1, batching: proportioning each alloy element according to the component requirement of the Cu-Cr-Zr alloy material, and selecting and preparing corresponding raw materials;
s2 smelting and casting: charging the raw materials into a smelting furnace according to the proportion of each element and a specific adding mode of each element for smelting, introducing argon for protection during the smelting, and starting up-drawing casting after keeping the temperature for a certain time to obtain a copper rod blank with the diameter of 25-35 mm;
s3 rolling: heating and rolling the copper rod blank with the diameter of 25-35mm at the heating temperature of 800-;
s4 solution heat treatment: carrying out solid solution heat treatment on the hot rolled blank with the diameter of 10-20mm, carrying out water quenching at the solid solution temperature of 850-1000 ℃ and the heat preservation time of 1-2 hours;
s5 cold rolling: carrying out multi-pass cold rolling on the blank phi 10-20mm after the solution heat treatment to obtain a cold-rolled blank phi 8-phi 10 mm;
s6 aging heat treatment: carrying out aging heat treatment on the cold-rolled blank with the diameter of 8-10 mm, wherein the aging temperature is 500-;
s7 stranding: and further carrying out multi-pass drawing on the aged phi 8-phi 10mm cold-rolled blank to obtain a phi 2.25-phi 3.15mm stranded wire single-wire finished product, and stranding phi 2.25-phi 3.15mm multiple wires to obtain a finished stranded wire.
2. The method for manufacturing the Cu-Cr-Zr alloy stranded wire for the electrified railway according to claim 1, wherein the Cu-Cr-Zr alloy material in the step S1 comprises the following components in percentage by mass: cr: 0.2-1.0%, Zr 0.02-0.2%, Cu: and (4) the balance.
3. The method for manufacturing the Cu-Cr-Zr alloy stranded wire for the electrified railways according to claim 1, wherein the specific adding mode of each element in the step S2 is as follows: cr and Zr are added in the form of cored wires, and Cu is added in the form of oxygen-free copper rods.
4. The method of claim 1, wherein in step S2, the Cu-Cr-Zr alloy strand is cast by using a Cu-Cr-Zr alloy pulling-up device, and the heating element and the crucible of the Cu-Cr-Zr alloy pulling-up device are made of graphite.
5. The method as claimed in claim 1, wherein the drawing speed of the drawing casting in step S2 is controlled to 800-1400 mm/min.
6. The method of manufacturing a Cu-Cr-Zr alloy stranded wire for an electrified railway according to claim 1, wherein the step S2 is performedThe upward casting adopts argon gas filling mode to separate oxygen, and adopts water cooling mode to cool, and the cooling water is continuously introduced with direct current, and its current density is 0.35-0.75A/cm2And the water inlet temperature is controlled at 21-24 ℃; wherein the cooling water is distilled water containing potassium nitrate with the mass concentration of 1.7-4.3%.
7. The method of claim 1, wherein in step S2, Cr and Zr are added in the form of cored wires, and Cu is added in the form of oxygen-free copper rods.
8. The method for manufacturing the Cu-Cr-Zr alloy stranded wire for the electrified railways according to claim 1, wherein the water quenching in the step S4 is performed by water quenching treatment by using distilled water containing special preparation, and the method comprises the following steps: 1) selecting distilled water containing a special preparation with the mass concentration of 4.5-5.8%, extending the hot rolled blank with the diameter of 10-20mm into an annular fog outlet area formed by the fog produced by an annular barrel, and cooling to 350-; 2) and then continuously extending the ring-shaped barrel into a water deep tank below the ring-shaped barrel, and cooling the ring-shaped barrel to room temperature, wherein the water deep tank is filled with distilled water containing special preparation with the mass concentration of 1.5-2.3%.
9. The method for manufacturing the Cu-Cr-Zr alloy stranded wire for the electrified railway according to claim 8, wherein the specially-made agent comprises the following components in percentage by mass: 10-15 parts of polyacrylamide, 3-7 parts of potassium chloride, 5-10 parts of polyvinyl alcohol and 1-3 parts of disodium ethylene diamine tetraacetate.
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| CN202010548176.6A CN111763846B (en) | 2020-06-16 | 2020-06-16 | Method for manufacturing Cu-Cr-Zr alloy stranded wire for electrified railway |
| PCT/CN2020/109357 WO2021253603A1 (en) | 2020-06-16 | 2020-08-14 | Cu-cr-zr alloy conductor for electrified railway and manufacturing method therefor |
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN112845652A (en) * | 2021-01-07 | 2021-05-28 | 宿迁学院 | Preparation method of Cu-Cr-Zr wear-resistant alloy wire |
| CN113362980A (en) * | 2021-08-09 | 2021-09-07 | 陕西斯瑞新材料股份有限公司 | Chromium-zirconium-copper alloy contact wire and preparation method and application thereof |
| CN113832367A (en) * | 2021-10-15 | 2021-12-24 | 东北大学 | Method for preparing CuCrZr alloy by two-stage aging process |
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| CN111575525A (en) * | 2020-04-16 | 2020-08-25 | 陕西斯瑞新材料股份有限公司 | Method for manufacturing Cu-Cr-Zr alloy contact line for electrified railway |
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| CN104658631A (en) * | 2015-02-12 | 2015-05-27 | 邢台鑫晖铜业特种线材有限公司 | CuCrZr alloy stranded wire and production process thereof |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112845652A (en) * | 2021-01-07 | 2021-05-28 | 宿迁学院 | Preparation method of Cu-Cr-Zr wear-resistant alloy wire |
| CN112845652B (en) * | 2021-01-07 | 2023-02-24 | 宿迁学院 | Preparation method of Cu-Cr-Zr wear-resistant alloy wire |
| CN113362980A (en) * | 2021-08-09 | 2021-09-07 | 陕西斯瑞新材料股份有限公司 | Chromium-zirconium-copper alloy contact wire and preparation method and application thereof |
| CN113832367A (en) * | 2021-10-15 | 2021-12-24 | 东北大学 | Method for preparing CuCrZr alloy by two-stage aging process |
| CN113832367B (en) * | 2021-10-15 | 2022-08-23 | 东北大学 | Method for preparing CuCrZr alloy by two-stage aging process |
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| Publication number | Publication date |
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| CN111763846B (en) | 2021-05-07 |
| WO2021253603A1 (en) | 2021-12-23 |
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