A method for manufacturing a high-content copper-silver alloy fine wire

Abstract

The present application relates to a kind of high content copper silver alloy micro-wire manufacturing method, including oxygen-free smelting process, oxygen-free continuous casting process, cascade spinning processing process, surface treatment process, heat treatment process and drawing process, the filter device is provided in the lower outlet of the crucible of smelting furnace in the oxygen-free smelting process, the side wall of the filter device is provided with flow guide filter hole higher than the bottom of the crucible;The present application solves the phenomenon that sometimes the impurities of furnace bottom are brought into the casting rod by the lower continuous casting, causes material broken line, forms waste product, waste a large amount of raw material silver, and the technical problem of high processing cost.

Description

TECHNICAL FIELD

[0001] The present application relates to the technical field of non-ferrous metal processing, and particularly relates to a manufacturing method of high-content copper-silver alloy micro-wire. BACKGROUND

[0002] The copper-silver alloy with silver content of 1% to 4% is widely used in the field of high-strength, high-conductivity and high-toughness coil, and has the characteristics of fatigue resistance. The high-content copper-silver alloy has high strength, and the finished product can reach more than 1000 MPa, so the processing difficulty is great. The traditional manufacturing method of high-silver copper continuous rod blank includes up-drawing continuous casting, horizontal continuous casting or down-drawing continuous casting, and the rod blank is cold-rolled and then drawn. Due to the existence of casting organization, it is difficult to draw into a micro-wire. A large amount of copper-silver alloy is often retained in the furnace bottom in up-drawing and horizontal continuous casting, resulting in waste. The down-drawing continuous casting can effectively solve the problem of alloy retention.

[0003] The patent document with the patent number CN2021113022136 discloses a preparation method of high-strength and high-conductivity Cu-Ag alloy micro-wire. The steps of the preparation method are as follows: a Cu-Ag alloy casting rod is prepared by using a down-drawing vacuum melting and casting method; the obtained Cu-Ag alloy casting rod is continuously extruded to obtain a rod blank with a diameter greater than or equal to 4 mm; the rod blank is subjected to multi-mode cold drawing, and after annealing, drawing is performed to finally prepare a Cu-Ag alloy micro-wire with a diameter of 0.016 to 0.055 mm.

[0004] However, in the actual use process, the inventors found that the down-drawing continuous casting sometimes causes the phenomenon that impurities in the furnace bottom are brought into the casting rod, resulting in material breakage, forming waste products, wasting a large amount of raw material silver, and high processing cost. SUMMARY

[0005] The present application aims at the deficiencies of the prior art, and provides a manufacturing method of high-content copper-silver alloy micro-wire. In the oxygen-free melting process, a filter device is arranged at the down-drawing water outlet of the crucible in the melting furnace, and a flow guide filter hole higher than the bottom of the crucible is arranged in the side wall of the filter device, so as to reduce the impurities entering the casting rod through the copper water flushing, and improve the forming quality of the casting rod, thereby solving the technical problems of the phenomenon that the down-drawing continuous casting sometimes causes the impurities in the furnace bottom to be brought into the casting rod, resulting in material breakage, forming waste products, wasting a large amount of raw material silver, and high processing cost.

[0006] In view of the above technical problems, the technical scheme is as follows: a manufacturing method of high-content copper-silver alloy micro-wire, which comprises an oxygen-free melting process, an oxygen-free continuous casting process, a cascade type spinning process, a surface treatment process, a heat treatment process and a drawing process. In the oxygen-free melting process, a filter device is arranged at the down-drawing water outlet of the crucible in the melting furnace, and a flow guide filter hole higher than the bottom of the crucible is arranged in the side wall of the filter device.

[0007] As preferred, the oxygen-free continuous casting process adopts continuous downward casting mode.

[0008] As preferred, the filtering device is inserted above the downward outlet of the crucible bottom.

[0009] As preferred, the filtering device comprises multiple graphite mesh sleeves arranged in multiple layers, each graphite mesh sleeve is provided with multiple flow guiding filter holes, and the height of the flow guiding filter holes on the graphite mesh sleeves from inside to outside is sequentially increased to the bottom of the crucible.

[0010] As preferred, the cascade spinning process comprises two or more groups of spinning mechanisms connected in series, and specifically comprises the following steps:

[0011] S1: straightening process, the continuous automatic output of the straightened continuous casting rod blank under the traction of the traction machine;

[0012] S2: spinning reducing process, the straightened continuous casting rod blank passes through multiple groups of spinning mechanisms, each group of spinning mechanisms first compresses the continuous casting rod blank and continuously twists it, and immediately performs continuous ring pressing reducing on the continuous casting rod blank after twisting, each group of spinning mechanisms completes the same action, and the continuous cascade spinning reducing is realized through the traction machine;

[0013] S3: cooling process, the deformed rod blank is cooled to obtain a fine-grained rod blank.

[0014] As preferred, each group of the spinning mechanisms comprises a guide wheel, a twisting assembly and a ring pressing assembly arranged in sequence along the output direction of the continuous casting rod blank;

[0015] The twisting assembly comprises multiple engagement parts arranged in a ring around the circumference of the continuous casting rod blank and synchronously rotating with the first rotating part, and a first control part for controlling the multiple engagement parts to synchronously act on the continuously transmitted continuous casting rod blank for continuous clamping;

[0016] The ring pressing assembly is coaxially arranged with the twisting assembly, and comprises multiple ring pressing parts synchronously rotating with the second rotating part, and a second control part for controlling the multiple ring pressing parts to intermittently perform ring pressing reducing on the continuous casting rod blank during synchronous rotation, and the reduced continuous casting rod blank is transmitted backward through traction after being released by the ring pressing part.

[0017] As preferred, the twisting angle of the twisting assembly is 90°-180°, and the deformation amount of each group of spinning mechanisms is 10%-20%.

[0018] As preferred, from the input direction to the output direction of the traction machine, the acting force of the twisting assembly of any group of spinning mechanisms is less than that of the ring pressing assembly, and the diameter of the continuous casting rod blank gradually decreases under the spinning treatment of multiple groups of spinning mechanisms.

[0019] Preferably, in the oxygen-free smelting process, the oxygen-free smelting equipment comprises an electromagnetic induction heating smelting furnace with oxygen insulation.

[0020] More preferably, the high-content copper-silver alloy comprises silver 0.5% to 50% by weight, and the balance is copper and inevitable trace impurities, and the oxygen content is less than 20PP.

[0021] The present application has the following advantages:

[0022] (1) The high-content copper-silver alloy micro-wire processing of the present application adopts spinning instead of continuous extrusion, which can produce a large amount of overflow and waste, resulting in a large amount of silver waste. Spinning can also refine the grains and produce no waste, saving silver raw materials and improving the utilization rate of raw materials.

[0023] (2) The present application reduces the residue of copper-silver alloy in the furnace by vacuum continuous casting, and the guide filtering hole of the filtering device is higher than the bottom of the crucible, thereby blocking the impurities precipitated at the bottom of the crucible and reducing the impurities entering the casting rod, improving the forming quality of the casting rod, and meeting the processing requirements of fine wires.

[0024] (2) In the present application, the continuous multi-stage torsional pressure processing technology is used for the continuous fine-grained copper-silver alloy, which can be combined with surface treatment, drawing, annealing and other processes to process the relatively hard high-content copper-silver alloy material into micro-wire, and combined with the high-content copper-silver alloy technology to produce micro-wire with excellent performance. The continuous fine-grained technology of new high-strength material and the spinning mechanism can improve production flexibility, reduce production cost, and can be applied to the manufacturing of other high-strength copper alloy micro-wire materials. The material organization fine-grained can increase the toughness and eliminate casting defects, and meet the processing requirements of fine wires.

[0025] (3) The present application adopts a torsional combined ring pressure mode by deformation, and the transmission of the continuous casting rod blank is continuous, and the torsion, spinning and transmission are continuous, so that the continuous casting rod blank can be continuously output. The continuous mode greatly improves the work efficiency. After the occlusion part tightly occludes the continuous casting rod blank, it drives the continuous casting rod blank to rotate, and after loosening, the ring pressure part immediately continues to compact it, realizing the reduction and flattening of the continuous casting rod blank. The torsional combined spinning mode can keep the reduction of the continuous casting rod blank consistent. In addition, the deformation mode is versatile, suitable for soft and hard alloys, and has no waste and overflow production, which is more suitable for continuous micro-wire processing.

[0026] In summary, the device has the advantages of strong versatility and high strength of copper-silver alloy micro-wire, and is especially suitable for non-ferrous metal processing technology field. BRIEF DESCRIPTION OF DRAWINGS

[0027] In order to make the technical solutions of the embodiments of the present application clearer, the following will briefly introduce the drawings needed in the embodiment description. Obviously, the drawings described below are only some of the embodiments of the present application, and other drawings can also be obtained by those skilled in the art without any creative effort on the basis of these drawings.

[0028] Figure 1 Process flow diagram of the manufacturing method of high-content copper-silver alloy micro-wire.

[0029] Figure 2 Structure diagram of the filtering device.

[0030] Figure 3 Sectional crystal phase diagram of the first-stage torsion process of the continuous casting billet.

[0031] Figure 4 Sectional crystal phase diagram of the first-stage ring pressing process of the continuous casting billet.

[0032] Figure 5 Sectional crystal phase diagram of the second-stage torsion process of the continuous casting billet.

[0033] Figure 6 Sectional crystal phase diagram of the second-stage ring pressing process of the continuous casting billet.

[0034] Figure 7 Transmission state diagram of the torsion assembly and the ring pressing assembly.

[0035] Figure 8 Internal structure diagram of the ring pressing assembly or the torsion assembly.

[0036] Figure 9 Structure diagram of the occlusion part or the ring pressing part. DETAILED DESCRIPTION

[0037] The technical solutions in the embodiments of the present application will be described clearly and completely in the following with reference to the drawings.

[0038] Embodiment one

[0039] As shown in the drawings, Figure 1 A manufacturing method of high-content copper-silver alloy micro-wire, which comprises an oxygen-free smelting process, an oxygen-free continuous casting process, a cascaded spinning process, a surface treatment process, a heat treatment process and a drawing process, wherein a filtering device 4 is arranged at the lower outlet of the crucible in the smelting furnace in the oxygen-free smelting process, and the side wall of the filtering device 4 is provided with flow guide filtering holes 41 which are higher than the bottom of the crucible.

[0040] Further, the high-content copper-silver alloy has the following components by weight ratio: silver 0.5% to 50%, the balance being copper and inevitable trace impurities, and the oxygen content being less than 20 PPM.

[0041] Further, as shown in Figure 2 The oxygen-free continuous casting process adopts a continuous downward casting mode.

[0042] It should be noted that oxygen-free continuous casting also includes upward casting and horizontal continuous casting. The reason why the downward casting mode is preferred in the present example is that the downward casting mode can effectively avoid a large amount of copper-silver alloy remaining in the furnace bottom, thereby avoiding waste.

[0043] Further, as shown in Figure 2 The filter device 4 is inserted above the downward outlet of the crucible bottom.

[0044] In detail, the copper-silver alloy is smelted by vacuum induction downward continuous casting. The crucible is a graphite crucible. The graphite powder and smelting agent adhere to the inner wall of the crucible and are not easy to float up. They will flow out under the scouring of the copper water, causing the continuous casting line to break. The bottom is provided with three layers of sleeve graphite cylindrical filter devices. Each layer of filter sleeve is provided with a flow guide filter side hole 41. At the same time, the upper end of the sleeve is higher than the liquid level of the downward outlet of the crucible furnace. That is, the outlet a of the sleeve is higher than the traditional outlet b of the crucible furnace bottom. The impurities flowing through the filter sleeve will float and remain at the top of the sleeve. After the copper water is opened, silver blocks are added to the copper water in a proportion by weight. After the composition is uniform, downward continuous casting is performed to obtain a copper-silver rod blank with a diameter of 12 mm. In addition, a small amount of residual alloy can be easily taken out.

[0045] Further, as shown in Figure 2 The filter device 4 includes multiple nested graphite mesh sleeves. Each graphite mesh sleeve is provided with multiple flow guide filter holes 41. The height of the flow guide filter holes 41 on the graphite mesh sleeves from the inside to the outside to the bottom of the crucible increases in order. Adjacent two graphite mesh sleeves have a spacing in the horizontal direction.

[0046] In the present embodiment, the height of the flow guide filter holes 41 on the graphite mesh sleeves from the inside to the outside to the bottom of the crucible increases in order, so as to realize multi-stage blocking of the impurities remaining at the bottom of the crucible, thereby further improving the continuous casting forming quality.

[0047] Further, in the oxygen-free smelting process, the oxygen-free smelting equipment includes an electromagnetic induction heating smelting furnace with oxygen isolation.

[0048] Further, in the oxygen-free smelting process, the high-content copper-silver alloy has a composition by weight ratio of: silver 0.5%~50%, and the balance being copper and unavoidable trace impurities. The oxygen content is less than 20 PPM.

[0049] It should be noted that the high-content copper-silver alloy fine wire composition is 4% silver by weight percentage, and the balance is oxygen-free copper.

[0050] Further, the surface treatment is to remove surface defects and oxides.

[0051] It should be noted that the surface treatment process is used to remove the surface defects and oxides of the rod blank, and the outer surface of the continuous casting rod blank after the twisting ring pressure has a threaded shape, but the traditional high-content copper-silver alloy micro-wire manufacturing method originally has a surface treatment process in the reducing process, so it does not increase other difficulties and complicated processes to the process itself, but the surface treatment process can also be set before the heat treatment process, and annealing treatment is carried out by adopting inert gas protection.

[0052] Further, it further includes a heat treatment process, and the copper-silver alloy after rough drawing is annealed at a temperature of 250°C to 500°C for 2 hours and naturally cooled.

[0053] Further, it further includes a cold drawing and fine drawing process, and a wire drawing equipment with cooling lubricant is used for reducing drawing during processing to obtain a copper-silver fine wire product size of 0.02 to 0.2 mm in diameter, and the electrical conductivity is not less than 70% IACS.

[0054] Example Two

[0055] As shown in Figure 1 , Figures 3 to 9 , wherein the same or corresponding parts as in Example One use corresponding reference numerals in Example One, and for the sake of simplicity, only the differences with Example One will be described below. The difference between this Example Two and Example One is that:

[0056] Further, as shown in Figure 1 , the cascading spinning machining process includes two or more groups of spinning mechanisms connected in series, and specifically includes the following steps:

[0057] S1: straightening process, the continuous casting rod blank 100 of high-content copper-silver alloy is straightened and then automatically output continuously under the traction of the traction machine;

[0058] S2: spinning reducing process, the straightened continuous casting rod blank 100 passes through multiple groups of spinning mechanisms, each group of spinning mechanisms first presses the continuous casting rod blank 100 and continuously twists it, and immediately performs continuous ring pressure reducing on the continuous casting rod blank 100 after twisting, and each group of spinning mechanisms performs the same action, and the traction machine realizes continuous cascading spinning reducing;

[0059] S3: cooling process, the deformed rod blank is cooled to obtain a fine-grained rod blank.

[0060] In this embodiment, by setting the cascading spinning technology and cascading spinning mechanism, the material is continuously fine-grained by fully utilizing the material deformation heat, which is beneficial to the processing of micro-wire and reduces material waste. This method has simple equipment, is flexible and reliable, has strong versatility, and the mold can be replaced conveniently, so that multiple high-strength copper alloy micro-wires can be produced at low cost.

[0061] In addition, the continuous casting rod blank is sent into the first set of twisting assemblies by the traction mechanism through the spinning mechanism, the engagement part 22 engages the rod blank, so that the rod blank is twisted by 120°, the twisting breaks the grains of the rod blank material and recrystallizes, and the twisted blank is immediately sent to the ring pressing reducing diameter, the ring pressing part 32 rotates synchronously and reciprocally presses downward, the deformation amount of the downward pressing is 20%, so that the rod blank is thinned, a large amount of deformation heat is generated by the deformation of the material, so that the temperature of the material reaches about 250°C, and the first deformed continuous casting rod blank 100 immediately enters the second set of assemblies to repeat the above deformation process, and the temperature of the material can continue to rise to about 500°C, recrystallization is generated under the spinning deformation, the material can be further welded to internal defects through the ring pressing, and the material density is increased, and the reduced diameter continuous casting rod blank 100 is cooled through the water tank, and after repeated cascade spinning by replacing the engagement part 22 and the ring pressing part 32 of different specifications, the diameter of the rod blank can be reduced to 8 mm, and the high-precision micro-wire manufacturing is completed.

[0062] The spinning reducing diameter process includes:

[0063] a: the twisting process, the continuous casting rod blank 100 is clamped by the twisting assembly 2 and continuously twisted while being pulled backward and transmitted, and the twisting angle is 90°-180° each time;

[0064] b: the ring pressing process, the twisted continuous casting rod blank 100 is immediately continuously ring-pressed to reduce the diameter by the traction to the ring pressing assembly 3, so that the diameter of the continuous casting rod blank 100 is reduced;

[0065] In this embodiment, the first rotating part 21 drives the multiple engagement parts 22 to synchronously rotate, and under the action of the first control part 23, the continuous casting rod blank 100 before being pulled to the ring pressing assembly 3 is intermittently clamped, the continuous casting rod blank 100 is synchronously continuously twisted when being clamped by the engagement part 22, and for the continuous fine-grained process of the continuous casting rod blank in the cascade spinning process, the internal grain changes are shown in FIG. 5. Figures 3-6

[0066] It should be noted that the clamping space diameter of the feeding end of the multiple engagement parts 22 is greater than the clamping space diameter of the discharging end when the continuous casting rod blank 100 is clamped.

[0067] And the continuous casting rod blank 100 is synchronously continuously twisted when being clamped by the ring pressing part 32, and the ring pressing parts are oppositely arranged in pairs to ensure that the stress is more stable and uniform during the extrusion deformation.

[0068] ​Furthermore, the first rotating part 21 and the second rotating part 31 rotate continuously during operation. Since the continuous casting billet 100 becomes thinner and longer during the ring pressing and diameter reduction process under the action of the ring pressing assembly 3, the rotation speed of the second rotating part 31 is not less than the rotation speed of the first rotating part 21. On the one hand, this helps to ensure the quality of the continuous casting billet located between the torsion assembly 2 and the ring pressing assembly 3 and avoid fracture. On the other hand, it allows the continuous casting billet to enter the ring pressing assembly 3 immediately after being torsionally deformed and refined by the torsion assembly 3 for ring pressing and diameter reduction, making maximum use of the heat generated by the torsion deformation, and further improving the quality of ring pressing and diameter reduction and re-refining.

[0069] Furthermore, such as Figures 7 to 9 As shown, each set of the spinning mechanism includes a guide wheel 1, a torsion assembly 2, and a ring pressing assembly 3 arranged sequentially along the traction output direction of the continuous casting billet 100;

[0070] The torsion assembly 2 includes a plurality of engagement parts that are arranged around the circumference of the continuous casting billet and rotate synchronously with the first rotating part, and a first control part for controlling the synchronous action of the plurality of engagement parts to continuously clamp the continuously transmitted continuous casting billet.

[0071] The ring pressing assembly 3 is coaxially arranged with the torsion assembly. It includes multiple ring pressing parts that rotate synchronously with the second rotating part, and controls the multiple ring pressing parts to intermittently ring press and reduce the diameter of the continuous casting billet during synchronous rotation. After the diameter-reduced continuous casting billet is released by the ring pressing parts, it is transported backward by traction.

[0072] The working principle of the torsion component 2 is as follows: the motor drives the meshing part 22 to rotate through the belt and twists it to release it. The meshing part 22 opens and closes. When the meshing part 22 is closed, it twists instantly. The travel size of the continuous casting billet each time it is twisted is not less than its traction travel distance in the same time, thereby achieving torsion deformation and refining the grains during the torsion process.

[0073] It is worth noting that the torsion assembly 2 and the ring pressing assembly 3 are combined to form a mold tooling. The first rotating part 21 of the torsion assembly 2 can adopt a circular disc structure. Several sets of engagement parts 22 are slidably arranged along the circumference of the first rotating part 21. The engagement parts 22 rotate synchronously under the drive of the first rotating part 21. During the rotation, guided by the first control part 23, the engagement parts 22 converge towards the axis to complete the circumferential clamping work on the continuously cast billet 100. For example, Figure 9As shown, in order to improve the stability of transmission, an elastic structure can also be arranged in the first rotating part to support and guide the corresponding installed engagement part 22; the structure and working principle of the ring pressing assembly 3 are the same as or similar to the torsion assembly, which will not be described here. But the pressure F1 of the torsion assembly 2 acting on the continuous casting rod blank 100 is less than the pressure F2 of the ring pressing assembly 3 acting on the continuous casting rod blank 100 in the ring pressing process. The ring pressing assembly 3 further performs continuous ring pressing reducing on the continuous casting rod blank 100 which has been subjected to primary fine crystallization by the torsion assembly 2, so as to realize secondary fine crystallization, which is beneficial to the processing of micro wires.

[0074] The specific structure of the torsion assembly 2 and the ring pressing assembly 3 in the embodiment is the preferred structure for realizing the process of the technical solution, but it is not limited to this structure. The protection scope of the present application is not limited to this. Any changes or replacements that can be easily thought of by those skilled in the art under the technical hints of the present application should be covered within the protection scope of the present application.

[0075] In addition, a guide wheel 1 is arranged at the front end of the continuous casting rod blank to position and guide the transmission of the continuous casting rod blank. The engagement part tightly engages the continuous casting rod blank to drive the continuous casting rod blank to rotate. After being loosened, the ring pressing part immediately continues to ring press the continuous casting rod blank, i.e. to press down and rotate synchronously, so as to realize the reducing and flattening of the continuous casting rod blank. Compared with the traditional pure drawing or pure extruding reducing mode, the torsion combined with ring pressing mode has consistent product surface quality and consistent reducing.

[0076] Further, the torsion angle of the torsion assembly 2 is 90°-180°, and the deformation amount of each group of spinning mechanism under pressure is 10%-20%.

[0077] Further, as shown in the figure, Figure 7 As shown, the acting force of the torsion assembly 2 of any group of spinning mechanism is less than the acting force of the ring pressing assembly 3 from the input direction to the output direction of the self-traction machine, and the diameter of the continuous casting rod blank 100 gradually decreases under the spinning treatment of multiple groups of spinning mechanism.

[0078] Embodiment three

[0079] A manufacturing method of high-content copper-silver alloy micro wires, wherein the high-content copper-silver alloy has a composition of silver 0.5%-50% by weight, the balance being copper and inevitable trace impurities, and the oxygen content is less than 20 PPM. The specific steps of the processing process are as follows:

[0080] Step A: straighten the continuous casting rod blank of high-content copper-silver alloy;

[0081] Step B: the cascade structure is composed of 2 groups or more than 2 groups of spinning machines connected in series, the rod blank is respectively pressed and continuously twisted by the cascade spinning machines, the twisting angle of each group of spinning machines is 120°-180°, the rod blank is immediately ring-pressed and reduced in diameter after twisting, and the deformation amount of each group of spinning machines is 10%-20%.

[0082] Step C: the deformed rod blank is continuously pulled to the water tank for cooling to obtain a fine-grained rod blank.

[0083] The above only describes the preferred embodiments of the present application and is not used to limit the present application, and any modification, equivalent replacement and improvement made within the spirit and principle of the present application shall be included in the protection scope of the present application.

Claims

1. A method for manufacturing a high-content copper-silver alloy fine wire, characterized by, The oxygen-free smelting process includes a filter device provided at a lower outlet of a crucible in a smelting furnace, and a side wall of the filter device is provided with flow guide filter holes higher than a bottom of the crucible. The oxygen-free continuous casting process adopts a continuous downward casting mode. The filter device is inserted above the lower outlet of the bottom of the crucible. The filter device includes multiple graphite mesh sleeves arranged in multiple layers, each graphite mesh sleeve is provided with multiple flow guide filter holes, and the heights of the flow guide filter holes on the graphite mesh sleeves from inside to outside sequentially increase to the bottom of the crucible, and multiple levels of impurities remaining in the bottom of the crucible are blocked. The cascading spinning process includes two or more groups of spinning mechanisms connected in series, and specifically includes the following steps: S1: straightening process, after the high-content copper-silver alloy continuous casting rod blank is straightened, it is continuously and automatically output under the traction of a traction machine; S2: spinning reducing process, the straightened continuous casting rod blank passes through multiple groups of spinning mechanisms, each group of spinning mechanism first presses the continuous casting rod blank, and continuously twists it, and immediately performs continuous ring pressing reducing on the continuous casting rod blank after twisting, each group of spinning mechanism completes the same action, and the continuous cascading spinning reducing is realized through the traction machine; S3: cooling process, the deformed rod blank is cooled to obtain a fine-grained rod blank; Each group of the spinning mechanism includes a guide wheel, a twisting assembly and a ring pressing assembly arranged in sequence along a traction output direction of the continuous casting rod blank; The twisting assembly includes multiple engagement parts arranged in a ring around the circumference of the continuous casting rod blank and synchronously rotating with a first rotating part, and a first control part for controlling the multiple engagement parts to synchronously act on the continuously transmitted continuous casting rod blank for continuous clamping; The ring pressing assembly is coaxially arranged with the twisting assembly, and includes multiple ring pressing parts synchronously rotating with a second rotating part, and the multiple ring pressing parts intermittently perform ring pressing reducing on the continuous casting rod blank in the process of synchronous rotation, and the reduced continuous casting rod blank is transmitted backward after being released by the ring pressing part through traction; The first rotating part and the second rotating part are continuously rotated when working.

2. The method of manufacturing a high content copper-silver alloy fine wire according to claim 1, characterized by, The continuous downward casting smelting copper-silver alloy adopts a vacuum induction mode.

3. The method of manufacturing a high copper silver alloy fine wire according to claim 2, wherein In the oxygen-free smelting process, the oxygen-free smelting equipment includes an electromagnetic induction heating smelting furnace with oxygen isolation.

4. The method of manufacturing a high copper silver alloy fine wire according to claim 1, wherein The crucible is a graphite crucible, and the inner wall of the crucible is bonded with graphite powder and smelting agent.

5. The method of manufacturing a high copper silver alloy fine wire according to claim 1, wherein The graphite mesh sleeve is provided with three groups, and there is a gap between two adjacent graphite mesh sleeves in the horizontal direction.

6. The method of manufacturing a high-copper silver alloy fine wire according to claim 1, wherein The upper end of the graphite mesh sleeve is higher than the liquid level of the lower outlet of the crucible, and the impurities flowing through the graphite mesh sleeve will float and stay at the top of the sleeve, and after the copper water is opened, silver blocks are added to the copper water in proportion to the weight, and after the composition is uniform, downward continuous casting is performed to obtain a copper-silver rod blank.

7. The method of manufacturing a high copper content copper-silver alloy fine wire according to claim 1, wherein From the input direction to the output direction of the traction machine, the twisting assembly of any group of spinning mechanism has a smaller force than the ring pressing assembly, and the diameter of the continuous casting rod blank gradually decreases under the spinning treatment of multiple groups of spinning mechanisms.

8. The method of manufacturing a fine line of a high content copper-silver alloy according to any one of claims 1 to 7, characterized in that, The high-content copper-silver alloy has a composition by weight ratio of: silver 0.5%~50%, and the balance is copper and unavoidable trace impurities, and the oxygen content is less than 20PPM.

Images