CN110653358A - Continuous extrusion equipment for large-length melt-infiltration type copper-steel composite wire - Google Patents
Continuous extrusion equipment for large-length melt-infiltration type copper-steel composite wire Download PDFInfo
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- CN110653358A CN110653358A CN201910953677.XA CN201910953677A CN110653358A CN 110653358 A CN110653358 A CN 110653358A CN 201910953677 A CN201910953677 A CN 201910953677A CN 110653358 A CN110653358 A CN 110653358A
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- 229910000831 Steel Inorganic materials 0.000 title claims abstract description 187
- 239000010959 steel Substances 0.000 title claims abstract description 187
- 239000002131 composite material Substances 0.000 title claims abstract description 47
- 238000001125 extrusion Methods 0.000 title claims abstract description 18
- 238000000626 liquid-phase infiltration Methods 0.000 title abstract description 6
- RYGMFSIKBFXOCR-UHFFFAOYSA-N Copper Chemical compound [Cu] RYGMFSIKBFXOCR-UHFFFAOYSA-N 0.000 claims abstract description 95
- 229910052802 copper Inorganic materials 0.000 claims abstract description 95
- 239000010949 copper Substances 0.000 claims abstract description 95
- 238000002156 mixing Methods 0.000 claims abstract description 21
- 239000007788 liquid Substances 0.000 claims abstract description 17
- IJGRMHOSHXDMSA-UHFFFAOYSA-N Atomic nitrogen Chemical compound N#N IJGRMHOSHXDMSA-UHFFFAOYSA-N 0.000 claims abstract description 16
- 238000001816 cooling Methods 0.000 claims abstract description 16
- 238000002347 injection Methods 0.000 claims abstract description 8
- 239000007924 injection Substances 0.000 claims abstract description 8
- 229910052757 nitrogen Inorganic materials 0.000 claims abstract description 7
- 239000007787 solid Substances 0.000 claims abstract description 6
- 238000002844 melting Methods 0.000 claims description 10
- 230000008018 melting Effects 0.000 claims description 10
- OKTJSMMVPCPJKN-UHFFFAOYSA-N Carbon Chemical compound [C] OKTJSMMVPCPJKN-UHFFFAOYSA-N 0.000 claims description 7
- PTVDYARBVCBHSL-UHFFFAOYSA-N copper;hydrate Chemical compound O.[Cu] PTVDYARBVCBHSL-UHFFFAOYSA-N 0.000 claims description 7
- 229910002804 graphite Inorganic materials 0.000 claims description 7
- 239000010439 graphite Substances 0.000 claims description 7
- 241000282461 Canis lupus Species 0.000 claims description 5
- 230000001105 regulatory effect Effects 0.000 claims description 5
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 4
- 238000001764 infiltration Methods 0.000 claims description 3
- 230000008595 infiltration Effects 0.000 claims description 3
- 238000005266 casting Methods 0.000 claims 1
- 239000010410 layer Substances 0.000 description 59
- 238000004519 manufacturing process Methods 0.000 description 7
- 229910000881 Cu alloy Inorganic materials 0.000 description 4
- 238000011161 development Methods 0.000 description 4
- 239000004020 conductor Substances 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 230000000694 effects Effects 0.000 description 3
- 238000005516 engineering process Methods 0.000 description 3
- 239000007789 gas Substances 0.000 description 3
- 230000006872 improvement Effects 0.000 description 3
- 230000001681 protective effect Effects 0.000 description 3
- 229910017526 Cu-Cr-Zr Inorganic materials 0.000 description 2
- 229910017810 Cu—Cr—Zr Inorganic materials 0.000 description 2
- 235000009421 Myristica fragrans Nutrition 0.000 description 2
- 230000009471 action Effects 0.000 description 2
- 239000000956 alloy Substances 0.000 description 2
- QVGXLLKOCUKJST-UHFFFAOYSA-N atomic oxygen Chemical compound [O] QVGXLLKOCUKJST-UHFFFAOYSA-N 0.000 description 2
- 239000011247 coating layer Substances 0.000 description 2
- 238000010276 construction Methods 0.000 description 2
- 230000001276 controlling effect Effects 0.000 description 2
- 238000013461 design Methods 0.000 description 2
- 238000007599 discharging Methods 0.000 description 2
- 239000001115 mace Substances 0.000 description 2
- 239000001301 oxygen Substances 0.000 description 2
- 229910052760 oxygen Inorganic materials 0.000 description 2
- 230000000149 penetrating effect Effects 0.000 description 2
- 238000012360 testing method Methods 0.000 description 2
- 230000009466 transformation Effects 0.000 description 2
- 229910017755 Cu-Sn Inorganic materials 0.000 description 1
- 229910017818 Cu—Mg Inorganic materials 0.000 description 1
- 229910017927 Cu—Sn Inorganic materials 0.000 description 1
- 229910045601 alloy Inorganic materials 0.000 description 1
- 238000013459 approach Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 230000005540 biological transmission Effects 0.000 description 1
- ZTXONRUJVYXVTJ-UHFFFAOYSA-N chromium copper Chemical compound [Cr][Cu][Cr] ZTXONRUJVYXVTJ-UHFFFAOYSA-N 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000008094 contradictory effect Effects 0.000 description 1
- 239000000498 cooling water Substances 0.000 description 1
- KUNSUQLRTQLHQQ-UHFFFAOYSA-N copper tin Chemical compound [Cu].[Sn] KUNSUQLRTQLHQQ-UHFFFAOYSA-N 0.000 description 1
- 239000013078 crystal Substances 0.000 description 1
- 230000007547 defect Effects 0.000 description 1
- 230000007812 deficiency Effects 0.000 description 1
- 229910001873 dinitrogen Inorganic materials 0.000 description 1
- 230000005294 ferromagnetic effect Effects 0.000 description 1
- 238000010438 heat treatment Methods 0.000 description 1
- 230000007774 longterm Effects 0.000 description 1
- 239000007769 metal material Substances 0.000 description 1
- 238000002360 preparation method Methods 0.000 description 1
- 238000012545 processing Methods 0.000 description 1
- 230000001737 promoting effect Effects 0.000 description 1
- 238000011160 research Methods 0.000 description 1
- 238000012827 research and development Methods 0.000 description 1
- 238000007711 solidification Methods 0.000 description 1
- 230000008023 solidification Effects 0.000 description 1
- 239000000243 solution Substances 0.000 description 1
- 238000005482 strain hardening Methods 0.000 description 1
- 238000005728 strengthening Methods 0.000 description 1
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Classifications
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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
-
- 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
- B22D11/005—Continuous casting of metals, i.e. casting in indefinite lengths of wire
-
- 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
- B22D11/007—Continuous casting of metals, i.e. casting in indefinite lengths of composite ingots, i.e. two or more molten metals of different compositions being used to integrally cast the ingots
-
- 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
- B22D11/143—Plants for continuous casting for horizontal casting
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Manufacture Of Alloys Or Alloy Compounds (AREA)
- Extrusion Of Metal (AREA)
Abstract
The invention relates to a large-length melt-infiltration type copper-steel composite wire continuous extrusion device which comprises a first die and a second die which are arranged in sequence, wherein a first copper cavity is arranged in the first die, a second copper cavity and a steel cavity are arranged in the second die, the second copper cavity is positioned above the steel cavity, a copper rod sequentially enters the first copper cavity and the second copper cavity through extrusion of a continuous extruder, the second die is divided into a molten steel injection section, a molten copper-water-molten steel mixing section and a molten copper-molten steel cooling section, molten steel and nitrogen of a molten steel container enter the steel cavity of the molten steel injection section, the molten steel and copper of the second copper cavity are melted to form a liquid copper-water-molten steel mixing layer, the liquid copper-water-molten steel mixing layer is mixed through the molten copper-water-molten steel mixing section, and the molten copper-water-molten steel cooling section to form a solid copper-steel composite layer, and the solid copper-steel composite. According to the invention, copper and steel are melted into liquid state to be mutually permeated and then cooled into the copper-steel composite layer, so that the firmness, the bonding degree and the integrity of the composite wire rod are enhanced.
Description
Technical Field
The invention relates to the technical field of wires, in particular to a continuous extrusion device for a long-length melting and penetrating type copper-steel composite 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 300MPa), and although it can reach 400MPa 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 wires are adopted by a high-speed electrified railway, and the wires are all based on the premise of losing conductivity. The Cu-Cr-Zr wire is still in a laboratory stage or a small batch test stage, although the Cu-Cr-Zr wire is improved to a certain extent on the original basis, the improvement extent is limited, the large-length high-strength high-conductivity wear-resistant chromium-copper steel novel composite wire greatly enhances the tensile strength of the wire and keeps higher conductivity, but the alloy material has the difficulties of difficult production control, high cost, unstable mass production quality and the like, and the large-length melting permeable copper steel composite wire has the characteristics of high safety coefficient, high tensile strength and high conductivity and meets the development requirements of future high-speed railway wires.
At present, China has become a large world electric railway, and according to the 'medium and long-term railway network planning' in China, the business mileage of railways in China reaches 10 kilometers and the electrification rate reaches 50% in 2020, the transportation capacity meets the national economic and social development requirements, and the main technical equipment reaches or approaches the international advanced level.
The large-length melting infiltration type copper-steel composite wire can meet the requirement that the weight of a single piece of products such as an electrified railway wire and the like is more than 1 ton, solves the great technical problem which puzzles the same industry in China, has great industrial popularization value, fills up the blank of the novel composite material production process in China, and has immeasurable practical significance for promoting the construction of the technical progress and the independent innovation capability of the copper processing industry.
The improvement of the wire strength provides safer and wider space for the design of the high-speed railway contact net in China, and the improvement of the electric conductivity can also save a large amount of electric energy. Meanwhile, corresponding independent innovative 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.
In addition, the research and development of new products greatly promote the progress of equipment technology, the production equipment of factories is upgraded and updated, and the overall production level is improved.
Disclosure of Invention
The invention aims to overcome the defects and provides the large-length melting and penetrating type copper-steel composite wire continuous extrusion equipment, the copper and the steel are melted into liquid state to be mutually penetrated and then cooled into the copper-steel composite layer by matching the first die and the second die, the continuous production of the copper-steel composite wire is realized, the problems of mutual contradiction and mutual sacrifice of electric conductivity and tensile strength are solved, the problems that copper, a coating layer and a steel core of copper-clad steel are mutually separated due to reasons of unmatched expansion systems and the like are solved, and the innovation of a production process and the independent innovation of tool equipment are realized.
The purpose of the invention is realized as follows:
the continuous extrusion equipment comprises a first die and a second die which are arranged in sequence, wherein a first copper cavity is arranged in the first die, a second copper cavity and a steel cavity are arranged in the second die, the second copper cavity is positioned above the steel cavity, a copper rod sequentially enters the first copper cavity and the second copper cavity through extrusion of a continuous extruder, the second die is divided into a molten steel injection section, a molten copper-molten steel mixing section and a molten copper-molten steel cooling section, molten steel and nitrogen of a molten steel container enter the steel cavity of the molten steel injection section, the molten steel and copper of the second copper cavity are melted to form a liquid molten copper-molten steel mixing layer, the liquid molten copper-molten steel mixing layer is mixed through the molten copper-molten steel mixing section, and the molten copper-molten steel cooling section is cooled to form a solid copper-steel composite layer, and the molten copper-steel composite wire is drawn through a finishing die.
Preferably, the molten copper-molten steel mixing section of the second die is provided with a liquid self-homogenizing device.
Preferably, the liquid self-homogenizing device comprises an X-shaped high-temperature-resistant self-homogenizing device and a graphite wolf tooth rod self-homogenizing device which are sequentially arranged.
Preferably, the X-shaped high-temperature-resistant self-homogenizing device comprises a guide plate connecting shaft, the guide plate connecting shaft is connected with the molten steel guide plate and the copper water guide plate, and the molten steel guide plate and the copper water guide plate are crossed with each other.
Preferably, the molten copper-molten steel mixing section of the second mold is wound with an electrified coil.
Preferably, cooling circulating water is correspondingly arranged on the molten copper steel cooling section of the second mold.
Preferably, the molten steel container is provided with a pressure regulating valve.
The invention has the beneficial effects that:
according to the invention, by controlling the discharging speed of the wire rod and the solidification time of the mixed liquid, the thickness of the copper-steel permeable layer can be adjusted, the firmness, the combination degree and the integrity of the composite wire rod are strengthened, and the linear expansion factors of copper and steel can be ignored, so that the copper and the steel can not be separated due to the linear expansion factors of the copper and the steel, and the good tensile strength of the steel and the good conductivity of the copper are utilized to exert respective advantages to make up for the deficiencies of the copper and the steel, thereby forming the novel copper-steel composite wire rod with large length, high strength and high conductivity, simultaneously increasing the tensile strength and conductivity of the product, breaking through the problem that the conductivity and the tensile strength are mutually contradictory and mutually sacrifice, overcoming the problem that the coating layer and the steel core are separated due to the mismatch of expansion systems and the like, and realizing the innovation of.
Drawings
FIG. 1 is a schematic structural diagram of the present invention.
FIG. 2 is a schematic structural diagram of an X-shaped high temperature resistant homogenizer.
Fig. 3 is a schematic structural diagram of a graphite mace self-homogenizer.
FIG. 4 is a schematic view of the first mold assembly and the product according to example 1.
FIG. 5 is a schematic view of a second mold assembly and a product according to example 2.
FIG. 6 is a schematic view of a third mold assembly and a product according to example 3.
FIG. 7 is a schematic view of a fourth mold assembly and a product according to example 4.
Wherein: a first mold 1; a first copper cavity 1.1; a second mold 2; a second copper cavity 2.1; a steel cavity 2.2; a copper rod 3; a continuous extruder 4; a molten steel container 5; 6, molten steel; 7, nitrogen gas; arranging the mold 8; an X-shaped high-temperature resistant self-homogenizer 9; the guide plate is connected with a shaft 9.1; a molten copper guide plate 9.2; 9.3 of a molten steel guide plate; a graphite wolf tooth stick self-homogenizing device 10; an energizing coil 11; cooling the circulating water 12; a pressure regulating valve 13; a copper-steel composite wire 14; a copper layer 14.1; a steel layer 14.2; 14.3 of a copper-steel composite layer; grooves 14.4.
Detailed Description
Example 1:
referring to fig. 1-4, the invention relates to a large-length melt-infiltration type copper-steel composite wire continuous extrusion device, which comprises a first die 1 and a second die 2 which are arranged in sequence, wherein a first copper cavity 1.1 is arranged in the first die 1, a second copper cavity 2.1 and a steel cavity 2.2 are arranged in the second die 2, the second copper cavity 2.1 is positioned above the steel cavity 2.2, a copper rod 3 is extruded by a continuous extruder 4 to sequentially enter the first copper cavity 1.1 and the second copper cavity 2.1, the second die 2 is divided into a molten steel injection section, a copper-water-molten steel mixing section and a copper-water-molten steel cooling section, molten steel 6 and nitrogen 7 of a molten steel container 5 enter the steel cavity 2.2 of the molten steel injection section, the molten steel 6 and copper of the second copper cavity 2.1 are melted to form a liquid copper-water-molten steel mixing layer, the liquid copper-water-molten steel mixing layer is mixed by the copper-water-molten steel mixing section, and the copper-water-molten steel cooling section is cooled to form, and drawing the copper-steel composite wire 14 through a finishing die 8.
The wire rod is used for contact wires or extra-high voltage power transmission and transformation wire rods.
The first copper cavity 1.1 and the second copper cavity 2.1 have the same structure.
The two ends of the contact surface of the section of the second die 2, which are positioned in the steel cavity 2.2 and the second copper cavity 2.1, are symmetrically provided with stop blocks, and the stop blocks enable the copper-steel composite wire 14 which is formed by drawing to be provided with grooves, so that the wire clamp of the wire can be conveniently installed.
And a liquid self-homogenizing device is arranged at the molten copper-molten steel mixing section of the second die 2.
The liquid self-homogenizing device comprises an X-shaped high-temperature resistant self-homogenizing device 9 and a graphite wolf tooth stick self-homogenizing device 10 which are sequentially arranged.
The X-shaped high-temperature-resistant self-homogenizing device 9 comprises a guide plate connecting shaft 9.1, the guide plate connecting shaft 9.1 is connected with a molten steel guide plate 9.2 and a molten steel guide plate 9.3, and the molten steel guide plate 9.3 and the molten steel guide plate 9.2 are mutually crossed.
And an electrified coil 11 is wound at the molten copper-molten steel mixing section of the second die 2.
And cooling circulating water 12 is correspondingly arranged at the molten copper and molten steel cooling section of the second die 2.
The molten steel container 5 is provided with a pressure regulating valve 13.
A continuous extrusion preparation method of a long-length melt-infiltration type copper-steel composite wire rod adopts the equipment and comprises the following steps:
a. extruding the copper rod into a first die through a continuous extruder;
b. the copper rod passes through the first die, enters the second die and is positioned in a second copper cavity above the second die;
c. before molten steel enters a container, because the molten steel is in contact with air and contains oxygen, nitrogen protective gas is added into the container of the molten steel, a certain pressure intensity in the container is kept through a pressure regulating valve 13, the pressure intensity is 1.02 standard atmospheric pressure, and the purpose of adding the nitrogen protective gas is to isolate air and oxygen;
d. the molten steel passing through the nitrogen protective gas enters a steel cavity below the second die, the temperature of the molten steel is kept at about 2000 ℃ due to the fact that the melting point of the steel is 1535 ℃, the temperature of the molten steel is 1083 ℃, the contact surface of copper and the molten steel is melted due to the fact that the temperature of the molten steel is up to 2000 ℃, a mixed layer of the copper and the molten steel is formed, the density of the copper is 8.9g/cm, the density of the steel is 7.8g/cm, the density of the copper is high, the density of the molten steel is low, and the copper is downward and mixed with the molten steel;
e. the mixed layer of the copper water and the molten steel passes through an X-shaped high-temperature resistant self-homogenizer and a graphite wolf tooth bar self-homogenizer, and the copper water and the molten steel are fully mixed; due to the effect of a plurality of sharp spines on the graphite mace self-homogenizer, the molten copper and the molten steel are crushed and redistributed, so that the molten copper and the molten steel are uniformly mixed;
d. the mixed layer of the molten steel and the molten steel forms eddy current under the current action of the coil, and the molten steel are fully mixed;
f. the molten steel, the molten steel and copper water mixed layer forms a solid steel and copper steel composite layer (solid) under the cooling action of circulating cooling water;
g. when the wire passes through the finishing die, a more compact crystal structure is obtained, the deformation of the wire is reduced by 2-3% through the design of the large and small openings of the finishing die, and the copper-steel composite wire is formed through the drawing effect.
The contact time of molten steel and copper can be controlled by controlling the rotating speed of the continuous extruder, the speed of the copper rod passing through the first die and the speed of molten steel entering the second die and the drawing and discharging speed, so that molten copper on the surface of copper can be effectively controlled, the thickness of the molten steel and the molten steel can be effectively controlled, the thickness of a copper-steel composite layer is also controlled, and the thickness of the copper-steel composite layer is 0.5-2 mm.
The copper-steel composite wire 14 drawn out from example 1 has a substantially circular cross section, and the copper-steel composite wire 14 includes a copper layer 14.1 and a steel layer 14.2, the copper layer 14.1 and the steel layer 14.2 are surface-infiltrated and integrated with each other by melting, and the surface of the melt-infiltrated forms a copper-steel composite layer 14.3.
Grooves 14.4 are symmetrically arranged on two sides of the section of the wire rod, corresponding to the copper-steel composite layer 14.3, and the grooves 14.4 correspond to the stop blocks.
The cross-sectional area of the steel layer 14.2 is smaller than the cross-sectional area of the copper layer 14.1.
Example 2:
referring to fig. 5, a mutual buckling structure is arranged on the cross section of the second die 2 on the contact surface of the steel cavity 2.2 and the second copper cavity 2.1; the buckling structure is a dovetail groove structure; the steel layer is equipped with the forked tail arch, the copper layer corresponds the forked tail arch and is equipped with the forked tail recess. The rest of example 1 is the same.
The cross section of the copper-steel composite wire 14 drawn out from example 2 is substantially circular, the copper-steel composite wire 14 includes a copper layer 14.1 and a steel layer 14.2, the copper layer 14.1 and the steel layer 14.2 are integrated with each other by surface infiltration through melting, and the surface of the melt infiltration forms a copper-steel composite layer 14.3.
Grooves 14.4 are symmetrically arranged on two sides of the section of the wire rod, corresponding to the copper-steel composite layer 14.3, and the grooves 14.4 correspond to the stop blocks.
And a mutual buckling structure is arranged between the copper layer 14.1 and the steel layer 14.2.
The buckling structure is a dovetail groove structure.
The steel layer 14.2 is equipped with the forked tail arch, copper layer 14.1 corresponds the forked tail arch and is equipped with the forked tail recess.
The cross-sectional area of the steel layer 14.2 is smaller than the cross-sectional area of the copper layer 14.1.
Example 3:
referring to fig. 6, the cross section of the second die 2 is the same as that of embodiment 1 except that there are no stoppers at both ends of the contact surface between the steel cavity 2.2 and the second copper cavity 2.1.
The copper-steel composite wire 14 drawn out of example 3 has a substantially circular cross section, and the copper-steel composite wire 14 includes a copper layer 14.1 and a steel layer 14.2, the copper layer 14.1 and the steel layer 14.2 are surface-infiltrated and integrated with each other by melting, and the surface of the melt-infiltrated forms a copper-steel composite layer 14.3.
The cross-sectional area of the steel layer 14.2 is smaller than the cross-sectional area of the copper layer 14.1.
Example 4:
referring to fig. 7, there are no stops at both ends of the section of the second die 2 at the interface of the steel cavity 2.2 and the second copper cavity 2.1; a mutual buckling structure is arranged on the section of the second die 2 and positioned on the contact surface of the steel cavity 2.2 and the second copper cavity 2.1; the buckling structure is a dovetail groove structure; the steel layer is provided with dovetail protrusions, and the copper layer is provided with dovetail grooves corresponding to the dovetail protrusions; the rest of example 1 is the same.
The copper-steel composite wire 14 drawn out of example 4 has a substantially circular cross section, and the copper-steel composite wire 14 includes a copper layer 14.1 and a steel layer 14.2, the copper layer 14.1 and the steel layer 14.2 are surface-infiltrated and integrated with each other by melting, and the surface of the melt-infiltrated forms a copper-steel composite layer 14.3.
And a mutual buckling structure is arranged between the copper layer 14.1 and the steel layer 14.2.
The buckling structure is a dovetail groove structure.
The steel layer 14.2 is equipped with the forked tail arch, copper layer 14.1 corresponds the forked tail arch and is equipped with the forked tail recess.
The cross-sectional area of the steel layer 14.2 is smaller than the cross-sectional area of the copper layer 14.1.
In addition to the above embodiments, the present invention also includes other embodiments, and any technical solutions formed by equivalent transformation or equivalent replacement should fall within the scope of the claims of the present invention.
Claims (7)
1. The utility model provides a big length melting infiltration formula copper steel composite wire continuous extrusion equipment which characterized in that: the copper-steel composite material casting mold comprises a first mold (1) and a second mold (2) which are arranged in sequence, wherein a first copper cavity (1.1) is arranged in the first mold (1), a second copper cavity (2.1) and a steel cavity (2.2) are arranged in the second mold (2), the second copper cavity (2.1) is positioned above the steel cavity (2.2), a copper rod (3) sequentially enters the first copper cavity (1.1) and the second copper cavity (2.1) through extrusion of a continuous extruder (4), the second mold (2) is divided into a molten steel injection section, a copper-water-molten steel mixing section and a copper-water-molten steel cooling section, molten steel (6) and nitrogen (7) of a molten steel container (5) enter the steel cavity (2.2) of the molten steel injection section, the molten steel (6) and copper of the second copper cavity (2.1) are melted to form a liquid copper-water-molten steel mixing layer, and the liquid copper-molten steel are mixed through the copper-water-molten steel mixing layer, and the copper-molten steel cooling layer is cooled to form a solid, drawing the copper-steel composite wire rod into a copper-steel composite wire rod (14) through a finishing die (8).
2. The continuous extrusion apparatus of claim 1, wherein: and a liquid self-homogenizing device is arranged at the copper-water-molten-steel mixing section of the second die (2).
3. The continuous extrusion apparatus of claim 2, wherein: the liquid self-homogenizing device comprises an X-shaped high-temperature resistant self-homogenizing device (9) and a graphite wolf tooth stick self-homogenizing device (10) which are sequentially arranged.
4. The continuous extrusion apparatus of claim 3, wherein: the X-shaped high-temperature-resistant self-homogenizing device (9) comprises a guide plate connecting shaft (9.1), the guide plate connecting shaft (9.1) is connected with a copper water guide plate (9.2) and a molten steel guide plate (9.3), and the molten steel guide plate (9.3) and the copper water guide plate (9.2) are mutually crossed.
5. The continuous extrusion apparatus of claim 1, wherein: and an electrified coil (11) is wound at the molten copper-molten steel mixing section of the second die (2).
6. The continuous extrusion apparatus of claim 1, wherein: and cooling circulating water (12) is correspondingly arranged at the molten copper and molten steel cooling section of the second die (2).
7. The continuous extrusion apparatus of claim 1, wherein: the molten steel container (5) is provided with a pressure regulating valve (13).
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| Application Number | Priority Date | Filing Date | Title |
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| CN201910953677.XA CN110653358B (en) | 2019-10-09 | 2019-10-09 | Continuous extrusion equipment for large-length melt infiltration type copper-steel composite wire |
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| CN201910953677.XA CN110653358B (en) | 2019-10-09 | 2019-10-09 | Continuous extrusion equipment for large-length melt infiltration type copper-steel composite wire |
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| CN110653358A true CN110653358A (en) | 2020-01-07 |
| CN110653358B CN110653358B (en) | 2024-04-12 |
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Cited By (3)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
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