CN113351855B - Production equipment and method for internal and external high-strength high-conductivity wear-resistant copper-steel composite contact wire - Google Patents
Production equipment and method for internal and external high-strength high-conductivity wear-resistant copper-steel composite contact wire Download PDFInfo
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- CN113351855B CN113351855B CN202110582969.4A CN202110582969A CN113351855B CN 113351855 B CN113351855 B CN 113351855B CN 202110582969 A CN202110582969 A CN 202110582969A CN 113351855 B CN113351855 B CN 113351855B
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D19/00—Casting in, on, or around objects which form part of the product
- B22D19/16—Casting in, on, or around objects which form part of the product for making compound objects cast of two or more different metals, e.g. for making rolls for rolling mills
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/003—Drawing materials of special alloys so far as the composition of the alloy requires or permits special drawing methods or sequences
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C1/00—Manufacture of metal sheets, metal wire, metal rods, metal tubes by drawing
- B21C1/02—Drawing metal wire or like flexible metallic material by drawing machines or apparatus in which the drawing action is effected by drums
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C37/00—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape
- B21C37/04—Manufacture of metal sheets, bars, wire, tubes or like semi-manufactured products, not otherwise provided for; Manufacture of tubes of special shape of bars or wire
- B21C37/042—Manufacture of coated wire or bars
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21C—MANUFACTURE OF METAL SHEETS, WIRE, RODS, TUBES OR PROFILES, OTHERWISE THAN BY ROLLING; AUXILIARY OPERATIONS USED IN CONNECTION WITH METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL
- B21C43/00—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass
- B21C43/02—Devices for cleaning metal products combined with or specially adapted for use with machines or apparatus provided for in this subclass combined with or specially adapted for use in connection with drawing or winding machines or apparatus
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B22—CASTING; POWDER METALLURGY
- B22D—CASTING OF METALS; CASTING OF OTHER SUBSTANCES BY THE SAME PROCESSES OR DEVICES
- B22D27/00—Treating the metal in the mould while it is molten or ductile ; Pressure or vacuum casting
- B22D27/04—Influencing the temperature of the metal, e.g. by heating or cooling the mould
Abstract
The invention relates to production equipment and a method for an internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line, which comprises a first die, a circulating cooling system and a finishing die; the first mold comprises an injection section and a cooling section, the injection section is provided with five injection ports, and a steel core, copper water, copper-magnesium alloy furnace water and copper-steel mixed furnace water are respectively injected into the injection ports, and the cooling section is provided with a circulating cooling system; the circulating cooling system is used for cooling the mixed liquid of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water to form a solid state; the finishing die is connected with the cooling section of the first die and used for drawing to form a contact line. The bottom of the contact line is continuously cast by 0.4 percent of copper-magnesium alloy to form a copper-magnesium alloy wear-resistant layer, so that the wear resistance of the contact line and a pantograph is improved, the wear of the contact part of the contact line is reduced, and the service life of the contact line is prolonged.
Description
Technical Field
The invention relates to the field of wires, in particular to production equipment and a method for an internal and external high-strength high-conductivity wear-resistant copper-steel composite contact wire.
Background
With the development of electronic information technology, the requirements for the comprehensive use performance of the copper alloy conductive material are higher and higher, and the copper alloy conductive material is required to maintain the characteristics of higher electrical conductivity, thermal conductivity, cold resistance, non-ferromagnetic property and the like while maintaining high strength (hardness), toughness and wear resistance. These excellent characteristics make copper alloys an important metal material for use in high-tech fields such as electric power, information, traffic, energy, light industry, and aerospace. In many cases, pure copper is rarely used because it has a low strength (230 to 300 MPa), and although it can reach 400 MPa after cold working, it has an elongation of only 2%, and its strengthening effect is easily lost when it is used under heating or at a certain temperature. Therefore, pure copper can be applied only to electric power, electric appliances, electric conductors, heat sinks, ornaments, etc., which are not subjected to much force. On the premise of keeping some excellent properties of pure copper, the strength (hardness) and wear resistance of copper are improved as much as possible, and then high-strength and high-conductivity copper alloys are gradually developed.
At present, Cu-Mg and Cu-Sn alloy contact wires are adopted by high-speed electrified railways, and the wires are all based on the premise of losing conductivity. Although the Cu-Cr-Zr contact line is still in the laboratory stage or the small batch test stage, although the improvement is improved to a certain extent on the original basis, the improvement extent is limited, chinese patent CN110660499A provides a long-length melt-infiltration type copper-steel composite wire, which greatly enhances the tensile strength of the wire and maintains higher conductivity, but the composite part in the middle of the alloy material has the highest strength, and the lower part of the contact line is worn more greatly after contacting with a pantograph for a long time, so that the service life of the contact line is shortened.
Disclosure of Invention
The invention aims to overcome the defects, provides production equipment and a method for an internal and external high-strength high-conductivity wear-resistant copper-steel composite contact wire, breaks through the contradiction between the conductivity and the tensile strength, overcomes the problems that copper, a coating layer and a steel core of copper-clad steel are separated from each other due to unmatched expansion systems and the like, and improves the tensile strength and the conductivity of the contact wire in a balanced manner.
The purpose of the invention is realized as follows:
production equipment for an internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line comprises a first die, a circulating cooling system and a finishing die; the first mold comprises an injection section and a cooling section, the injection section is provided with five injection ports, and a steel core, copper water, copper-magnesium alloy furnace water and copper-steel mixed furnace water are respectively injected into the injection ports, and the cooling section is provided with a circulating cooling system; a cylindrical steel core containing cavity is arranged in the first die and used for placing a steel core; the outer ring of the steel core containing cavity is provided with a circle of copper-steel composite cavity which is connected with a copper-steel mixing furnace, and water of the copper-steel mixing furnace is injected into the injection section; a copper cavity is respectively arranged above and below the copper-steel composite cavity, is communicated with the copper water smelting furnace, and is filled with copper water at an injection section; a copper-magnesium composite cavity is arranged below the lower copper cavity and communicated with the copper-magnesium alloy furnace, and copper-magnesium alloy furnace water is injected into the injection section; the circulating cooling system is used for cooling the mixed liquid of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water to form a solid state; the arrangement die is connected with the cooling section of the first die and used for forming a contact line through drawing, and an upper drawing wheel and a lower drawing wheel are arranged on one side of the arrangement die and act on the upper surface and the lower surface of the contact line.
Further, the steel core enters a cleaning, descaling and drying device before entering the first die.
Further, the bottom of the contact line is made of 0.2% -0.8% of copper-magnesium alloy.
Further, the copper-steel mixed furnace water is formed by uniformly mixing copper and steel according to the mass ratio of 0.8-1.5.
Further, the arrangement mould is a large-small-head arrangement mould, and the cavity opening of the arrangement mould gradually shrinks by 1-2% from the foremost end to the rearmost end.
Further, the circulating cooling system is a servo cooling system.
A production method of an internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line comprises the following steps:
a. producing a steel core by using molten steel;
b. before entering a die, the steel core firstly enters a cleaning, descaling and drying device to remove impurities and water vapor on the surface of the metal;
c. respectively injecting the steel core and the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a steel core containing cavity, a copper-magnesium composite cavity and a copper-steel composite cavity of a first die, cooling the mixed liquid of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a solid state through a circulating cooling system, drawing the solid state through a finishing die to form a contact line with a copper-magnesium alloy layer at the bottom, and finally drawing the solid state for two times through a drawing wheel to form a copper-steel composite non-shedding whole.
Further, the copper-steel mixed furnace water is formed by uniformly mixing copper and steel according to the mass ratio of 0.8-1.5.
Furthermore, the copper-steel mixed furnace water is pressurized and propelled, the pressure is 1.02-1.05 standard atmospheric pressure, the phenomenon of delay is generated before the furnace water is carried out under the action of a cooling system, and the phenomenon of composite hollow, looseness and incompactness caused by pressurized propulsion is avoided.
Furthermore, the arrangement mould adopts a large-small head arrangement mould and a large-small head arrangement process.
Compared with the prior art, the invention has the beneficial effects that:
(1) the improvement of the contact line strength of the invention provides safer and wider space for the design of the high-speed railway contact network in China, and the improvement of the electrical conductivity can also save a large amount of electrical energy; meanwhile, corresponding independent innovation scientific research achievements can be generated in the aspects of production, test, construction, operation and the like, and the development of the high-speed contact network technology in China is greatly promoted; the invention can not only meet the requirement that the weight of a single piece of products such as an electrified railway contact line and the like is more than 1 ton, solve the important technical problem which puzzles the same industry in China, have important industrial popularization value, fill up a blank of the novel composite material production process in China, and have immeasurable practical significance for promoting the technical progress and the construction of independent innovation capacity of the copper processing industry.
(2) The bottom of the contact line is continuously cast by adopting 0.4 percent copper-magnesium alloy to form a copper-magnesium alloy wear-resistant layer, so that the wear resistance with the pantograph is improved, the wear of the contact part of the contact line is reduced, and the service life of the contact line is prolonged.
(3) The copper steel of the copper steel composite layer is compounded according to the atomic ratio of 1:1 through the copper and the iron, so that the copper steel composite layer is firmer than a direct compounding mode, a whole body which cannot fall off can be formed, the strength of the copper steel composite contact line is improved, and the firmness, the bonding degree and the integrity of the composite wire rod are strengthened.
Drawings
FIG. 1 is a schematic view of the structure of a production apparatus of the present invention.
Fig. 2 is a schematic structural diagram of a contact wire product of the present invention.
Fig. 3 is a schematic wiring diagram of the contact wire of the present invention.
FIG. 4 is a schematic diagram showing a microstructure comparison of the composite layer of the present invention.
In the figure:
the device comprises a steel core 1, copper water 2, copper magnesium alloy furnace water 3, copper steel mixed furnace water 4, a first mold 5, a circulating cooling system 6, a finishing mold 7, a drawing wheel 8, a contact line 9, a steel core 9.1, a copper layer 9.2, a copper steel composite layer 9.3, a copper magnesium alloy wear-resistant layer 9.4 and a groove 9.5.
Detailed Description
For a better understanding of the technical aspects of the present invention, reference will now be made in detail to the accompanying drawings. It should be understood that the following specific examples are not intended to limit the embodiments of the present invention, but are merely exemplary embodiments of the present invention. It should be noted that the description of the positional relationship of the components, such as the component a is located above the component B, is based on the description of the relative positions of the components in the drawings, and is not intended to limit the actual positional relationship of the components.
Example 1:
referring to fig. 1-2, fig. 1 is a schematic structural diagram of a production device for an internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line. As shown in the figure, the production equipment for the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line comprises a first die 5, a circulating cooling system 6 and a finishing die 7; the first mold 5 comprises an injection section and a cooling section, the injection section is provided with five injection ports, and a steel core 1, copper water 2, copper-magnesium alloy furnace water 3 and copper-steel mixed furnace water 4 are respectively injected into the injection ports, and the cooling section is provided with a circulating cooling system 6.
A cylindrical steel core containing cavity is arranged in the first die 5 and used for placing the steel core 1; a circle of copper-steel composite cavity is arranged on the outer ring of the steel core containing cavity and connected with a copper-steel mixing furnace, and copper-steel mixing furnace water 4 is injected into the injection section; a copper cavity is respectively arranged above and below the copper-steel composite cavity, is communicated with the copper water smelting furnace, and is filled with copper water 2 at an injection section; a copper-magnesium composite cavity is arranged below the lower copper cavity and communicated with the copper-magnesium alloy furnace, and copper-magnesium alloy furnace water 3 is injected into the injection section; the circulating cooling system 6 is used for cooling the mixed liquid of the copper water 2, the copper magnesium alloy furnace water 3 and the copper steel mixed furnace water 4 to form a solid.
The arrangement die 7 is connected with the cooling section of the first die 5 and used for forming a contact line 9 in a drawing mode, an upper drawing wheel 8 and a lower drawing wheel 8 are arranged on one side of the arrangement die 7 and act on the upper surface and the lower surface of the contact line 9, so that the whole copper-steel composite contact line is subjected to drawing arrangement again, the copper-steel composite layer is combined with copper and steel more tightly and more firmly, and a copper-steel composite whole body which can not fall off is formed.
Before entering the first die 5, the steel core 1 enters a cleaning, descaling and drying device to remove impurities on the surface of the metal and remove moisture on the surface so as to avoid affecting composite forming.
The copper-steel mixed furnace water 4 is formed by uniformly mixing copper and steel according to the mass ratio of 0.8-1.5.
The trimming die 7 is a large-small-head trimming die, and the cavity opening of the trimming die gradually shrinks by about 1-2% from the foremost end to the rearmost end, so that the contact line is prevented from generating a gap between the contact line and the die after the whole contact line expands with heat and contracts with cold, and the forming of the contact line is prevented from being influenced; meanwhile, the die cavity is gradually contracted, so that the contact line is extruded to a certain degree, the internal crystal grains are tighter, and the strength is further enhanced.
The circulating cooling system 6 adopts a servo cooling system, so that the cooling system is uniformly cooled, and the phenomenon that crystals in contact wires generate large difference due to instability of the cooling system is avoided.
Referring to fig. 1-2, the production method of the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line comprises the following steps:
a. producing a steel core by using molten steel; before molten steel enters the molten steel smelting furnace, because the molten steel contacts air and is provided with oxygen, nitrogen protective gas is added into the molten steel smelting furnace, a pressure regulating valve is used for keeping a certain pressure intensity in the molten steel smelting furnace, the pressure intensity is 1.02 standard atmospheric pressure, and the purpose of adding the nitrogen protective gas is to isolate air and oxygen to form a steel core.
b. Before entering a die, the steel core is firstly put into a cleaning, descaling and drying device to remove impurities and water vapor on the surface of the metal so as to avoid affecting composite forming;
c. respectively injecting the steel core and the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a steel core containing cavity, a copper-magnesium composite cavity and a copper-steel composite cavity of a first die, cooling the mixed liquid of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a solid state through a circulating cooling system, drawing the solid state through a finishing die to form a contact line with a copper-magnesium alloy layer at the bottom, and finally drawing the solid state for two times through a drawing wheel to form a copper-steel composite non-shedding whole.
Before the copper water enters the copper water melting furnace, the copper water is in contact with air and is provided with oxygen, nitrogen protective gas is added into the copper water melting furnace, a certain pressure intensity in the container is kept through a pressure regulating valve, the pressure intensity is about 1.02 standard atmospheric pressure, the purpose of adding the nitrogen protective gas is to isolate the air and the oxygen, and a copper rod is formed.
The copper-steel mixed furnace water is formed by uniformly mixing copper and steel according to the mass ratio of 0.8-1.5, and the temperature is controlled to be about 2000 ℃; the melting point of the steel is 1535 ℃, the melting point of the copper is 1083 ℃, when furnace water mixed with copper and steel at 2000 ℃ contacts the surface of the copper rod and the surface of the steel rod, the contact surface of the copper rod and the steel rod starts to melt due to the temperature of the furnace water reaching 2000 ℃, the copper in the furnace water and the copper in the copper rod are solidified together under the continuous action of a circulating cooling system, and the steel in the furnace water and the steel in the steel rod are solidified together in the same way, so that the copper rod, the furnace water and the steel rod form a firm and non-detachable whole;
the copper-steel mixed furnace water is pressurized and propelled, the pressurization is about 1.02-1.05 standard atmospheric pressure, and the phenomenon of composite hollowness, looseness and incompactness can be caused due to the phenomenon of delay before the furnace water is carried out under the action of a cooling system;
the circulating cooling systems adopt servo cooling systems, so that the cooling systems are uniformly cooled, and the phenomenon that crystals in contact wires generate large difference due to instability of the cooling systems is avoided;
finally, a contact line is formed by drawing through a finishing die, because grains at the joint of the composite layer and the copper and steel are thick and the structure is not compact, the composite layer is more tightly and firmly combined with the copper and steel by drawing through a large-small-head finishing die, and a copper-steel composite whole body which can not fall off is formed; through the effect of drawing wheel, make whole copper steel composite contact line through drawing the arrangement once more equally for the composite bed combines inseparabler with copper, steel, and is more firm, forms a copper steel complex whole that can not drop.
Referring to fig. 2, fig. 2 depicts a schematic diagram of the contact wire structure of the present invention. As shown in the figure, the contact wire 9 includes a wire body, the wire body includes a steel core 9.1, a copper layer 9.2, a copper-steel composite layer 9.3, and a copper-magnesium alloy wear layer 9.4, a copper-steel composite layer 9.3 is disposed outside the steel core 9.1, the copper-steel composite layer 9.3 is covered by the copper layer 9.2, a copper-magnesium alloy wear layer 9.4 is disposed at the bottom of the copper layer 9.2, and the copper-magnesium alloy wear layer 9.4 is formed by continuous casting of 0.4% copper-magnesium alloy, and is disposed at the bottom of the wire body to increase wear resistance with a pantograph, reduce wear of a contact portion of the contact wire, and thus increase a service life of the contact wire.
The steel core 9.1 and the copper-steel composite layer 9.3 divide the copper layer 9.2 into an upper part and a lower part, and two corresponding sides between the upper part and the lower part are respectively provided with a groove 9.5.
Referring to fig. 3, fig. 3 depicts a wiring schematic of the present invention. As shown in the figure, the voltage symmetrical wiring method for the internal and external copper steel composite contact line, which is related by the invention, comprises the following steps:
the copper-steel contact wire is hung, the two ends C and D of the copper layer are connected and electrified, the two ends A and B of the steel layer and the two ends E and F of the copper-steel composite layer are not electrified, current only flows between CDs at the moment, a good conductive effect is achieved, the tensile strength can be greatly improved, the safety coefficient of locomotive operation is improved, and meanwhile the good conductor effect of copper is fully exerted.
The copper is an electrical good conductor, different from copper alloy, the electric conductivity can reach 100% IACS, the line loss is greatly reduced, and resources are saved.
Referring to fig. 4, fig. 4 depicts a schematic comparison of the microstructure of a composite layer. As shown, black double arrows indicate metallic bonds between iron atoms, strong connections, gray double arrows indicate metallic bonds between copper atoms, strong connections, open double arrows indicate metallic bonds between iron atoms and copper atoms, weak connections; therefore, the copper-steel composite layer is far firmer than a copper-steel direct composite mode through a copper-iron atomic ratio of 1:1, and can form an integral body which cannot fall off. The copper-steel composite layer is compounded according to the copper-iron atomic ratio of 1:1, the relative atomic mass of copper atoms is 64, steel is a general name of iron-carbon alloy with the carbon content of 0.02-2.11% by mass, the relative atomic mass of iron atoms is 56, 0.02-2.11% of carbon atoms are added, and the relative atomic mass of carbon atoms is 12, namely copper-steel mixed furnace water is uniformly mixed by copper steel according to the mass ratio of 0.8-1.5.
The above is only a specific application example of the present invention, and the protection scope of the present invention is not limited in any way. All the technical solutions formed by equivalent transformation or equivalent replacement fall within the protection scope of the present invention.
Claims (10)
1. The utility model provides a production facility of wear-resisting copper steel composite contact line is led to inside and outside type height by force, its characterized in that: the device comprises a first die, a circulating cooling system and a finishing die; the first mold comprises an injection section and a cooling section, the injection section is provided with five injection ports, and a steel core, copper water, copper-magnesium alloy furnace water and copper-steel mixed furnace water are respectively injected into the injection ports, and the cooling section is provided with a circulating cooling system; a cylindrical steel core containing cavity is arranged in the first die and used for placing a steel core; the outer ring of the steel core containing cavity is provided with a circle of copper-steel composite cavity which is connected with a copper-steel mixing furnace, and water of the copper-steel mixing furnace is injected into the injection section; a copper cavity is respectively arranged above and below the copper-steel composite cavity, is communicated with the copper water smelting furnace, and is filled with copper water at an injection section; a copper-magnesium composite cavity is arranged below the lower copper cavity and communicated with the copper-magnesium alloy furnace, and copper-magnesium alloy furnace water is injected into the injection section; the circulating cooling system is used for cooling the mixed liquid of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water to form a solid state; the arrangement die is connected with the cooling section of the first die and used for forming a contact line through drawing, and an upper drawing wheel and a lower drawing wheel are arranged on one side of the arrangement die and act on the upper surface and the lower surface of the contact line.
2. The production equipment for the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 1, characterized in that: and the steel core enters a cleaning, descaling and drying device before entering the first die.
3. The production equipment for the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 1, characterized in that: the bottom of the contact line is made of 0.2% -0.8% of copper-magnesium alloy.
4. The production equipment for the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 1, characterized in that: the copper-steel mixed furnace water is formed by uniformly mixing copper and steel according to the mass ratio of 0.8-1.5.
5. The production equipment for the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 1, characterized in that: the arrangement mould is a big end and a small end arrangement mould, and the cavity opening of the arrangement mould is gradually contracted by 1-2% from the foremost end to the rearmost end.
6. The production equipment for the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 1, characterized in that: the circulating cooling system is a servo cooling system.
7. The production method of the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line is characterized by comprising the following steps of:
a. producing a steel core by using molten steel;
b. before entering a die, the steel core firstly enters a cleaning, descaling and drying device to remove impurities and water vapor on the surface of the metal;
c. respectively injecting the steel core and the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a steel core containing cavity, a copper-magnesium composite cavity and a copper-steel composite cavity of a first die, cooling the mixed liquid of the copper water, the copper-magnesium alloy furnace water and the copper-steel mixed furnace water into a solid state through a circulating cooling system, drawing the solid state through a finishing die to form a contact line with a copper-magnesium alloy layer at the bottom, and finally drawing the solid state for two times through a drawing wheel to form a copper-steel composite non-shedding whole.
8. The production method of the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 7, characterized in that: the copper-steel mixed furnace water is formed by uniformly mixing copper and steel according to the mass ratio of 0.8-1.5.
9. The production method of the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 7, characterized in that: the water of the copper-steel mixed furnace is pressurized and pushed, and the pressure is 1.02-1.05 standard atmospheric pressure.
10. The production method of the internal and external high-strength high-conductivity wear-resistant copper-steel composite contact line according to claim 7, characterized in that: the arrangement mould adopts a large and small head arrangement mould and a large and small head arrangement process.
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| CN202110582969.4A CN113351855B (en) | 2021-05-27 | 2021-05-27 | Production equipment and method for internal and external high-strength high-conductivity wear-resistant copper-steel composite contact wire |
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| CN202110582969.4A CN113351855B (en) | 2021-05-27 | 2021-05-27 | Production equipment and method for internal and external high-strength high-conductivity wear-resistant copper-steel composite contact wire |
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| CN113351855B true CN113351855B (en) | 2022-04-29 |
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| CN114260439A (en) * | 2021-12-09 | 2022-04-01 | 中铁建电气化局集团康远新材料有限公司 | Production equipment and method for multi-point riveting type copper-steel composite contact line |
| CN114210952A (en) * | 2021-12-09 | 2022-03-22 | 中铁建电气化局集团康远新材料有限公司 | Production equipment and method for center riveting type copper steel composite contact line |
| CN115070018B (en) * | 2022-07-13 | 2023-05-09 | 中铁建电气化局集团康远新材料有限公司 | Production equipment and method for high-tensile-strength copper-steel composite contact line |
| CN115488320A (en) * | 2022-09-21 | 2022-12-20 | 中铁建电气化局集团康远新材料有限公司 | Production equipment and method of anti-icing and deicing high-strength high-conductivity copper-steel composite wire |
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| CN110653358A (en) * | 2019-10-09 | 2020-01-07 | 中铁建电气化局集团康远新材料有限公司 | Continuous extrusion equipment for large-length melt-infiltration type copper-steel composite wire |
| CN213123814U (en) * | 2020-09-14 | 2021-05-04 | 信承瑞技术有限公司 | High-strength wear-resistant copper-magnesium alloy contact line |
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