CN110523800B - Copper rod material and method for processing copper alloy rod material - Google Patents
Copper rod material and method for processing copper alloy rod material Download PDFInfo
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- CN110523800B CN110523800B CN201810502458.5A CN201810502458A CN110523800B CN 110523800 B CN110523800 B CN 110523800B CN 201810502458 A CN201810502458 A CN 201810502458A CN 110523800 B CN110523800 B CN 110523800B
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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
- B21C29/00—Cooling or heating work or parts of the extrusion press; Gas treatment of work
- B21C29/003—Cooling or heating of work
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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
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- Extrusion Of Metal (AREA)
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Abstract
The invention provides a copper rod and a processing method of a copper alloy rod, which comprises the following steps: the method comprises the following steps: connecting the rods to be processed by cold pressure welding; step two: cutting and scraping the outer peripheral surface of the connected rod material to be processed; step three: conveying the rod material to be processed into a heating cavity, filling inert protective gas into the heating cavity, and heating the rod material to be processed by a heating device arranged in the heating cavity; step four: and the rod material to be processed is extruded by an extruder and then output. The method has the advantages of simple operation process and high efficiency, and the prepared copper rod and copper alloy rod have excellent performance.
Description
Technical Field
The invention relates to the technical field of rod material processing, in particular to a copper rod material and a processing method of a copper alloy rod material.
Background
Copper and its alloy material have a series of good comprehensive properties: excellent electrical and thermal conductivity, good corrosion resistance, sufficient mechanical properties, and excellent processing plasticity. Copper and its alloys play a significant role in the power industry, the electrical industry and the electronics field. The development and development of high-performance copper and its alloy materials have become one of the hot spots in the research of copper alloys. At present, in the processing process of copper alloy, the prepared copper alloy is not enough to meet the requirement of high performance only by carrying out the traditional solid solution and aging heat treatment method on the copper alloy; the composite material method, the rapid solidification method and other methods have complex processes and high production cost, and have some difficulties in industrial application. Therefore, it is very important to develop a processing method with simple processing technology, easy realization of continuous production and higher commercial application prospect.
In the traditional copper rod production, an upward drawing method and a continuous casting and rolling method are generally adopted. The continuous casting and rolling production line has large investment and complex operation and maintenance, and only low-oxygen rods can be produced in the production process; the up-drawing method can produce oxygen-free copper rods, but the copper rods are easy to form defects such as looseness and the like in the drawing and casting process, and are easy to form broken lines in the subsequent drawing process. The upper casting rod is in a high-pressure and high-temperature state in the continuous extrusion process by continuously extruding the upper copper rod, cast-state crystal grains are completely crushed and completely dynamically recrystallized, superfine crystal grains are obtained, the defects of looseness and the like are eliminated, and the tissue uniformity is improved. The traditional continuous extrusion equipment has poor adaptability to raw materials, and an up-drawing copper rod is generally used as the raw materials. The surface pollution of the continuous casting and rolling copper wire billet caused by the emulsion in the rolling process causes the defects of bubbles and the like on the surface of an extruded copper rod by using the traditional extrusion process.
The existing copper and copper alloy continuous extrusion process generally comprises the steps of clamping a preheated short copper rod by iron tongs and putting the preheated short copper rod into an extrusion wheel, so that the extrusion wheel and the preheated copper rod generate friction, and the extrusion wheel is continuously heated. The preheated short copper rod section is contacted with air to form a black rod, the extrusion copper rod section prepared from the black rod cannot be normally used, and certain pollution exists on a die cavity, so that the preparation of some ultrapure materials is not facilitated. The extruded copper rod has high temperature and serious surface oxidation phenomenon.
In addition, when the continuous extrusion technology is adopted to produce long-length copper and copper alloy rod materials, the traditional fusion welding or resistance welding mode is generally adopted to weld rod blanks. In the welding process, electrification and heating are needed, and the structural state of the welding position can be changed. The structural state of the welding part after being extruded is greatly different from that of other positions, which is unfavorable for the subsequent processing of the rod material, and particularly causes high-frequency wire breakage phenomenon when copper and copper alloy are drawn into micro wires, wherein the micro wires refer to copper and copper alloy wires with the wire diameter of less than 0.2 mm.
Disclosure of Invention
In order to solve the above technical problems, the present invention provides a copper rod and a method for processing a copper alloy rod, comprising the steps of:
the method comprises the following steps: connecting the rods to be processed by cold pressure welding;
step two: cutting and scraping the outer peripheral surface of the connected rod material to be processed;
step three: conveying the rod to be processed into a heating cavity, filling inert protective gas into the heating cavity, and heating the rod to be processed by a heating device arranged in the heating cavity
Step four: and the rod material to be processed is extruded by an extruder and then output.
Preferably, in the step one, the two rods to be processed are respectively placed into the die holes of two oppositely arranged dies, and the cold welding machine drives the two dies to move in opposite directions, so that the two rods to be processed are subjected to cold welding.
Preferably, in the second step, the diameter of the bar to be processed is 6-30mm before the cutting and scraping treatment, and the cutting depth of the bar to be processed is 0.05-0.2mm during the cutting treatment.
Further, the cutting and scraping process comprises the steps of:
1) rounding and straightening the rod to be processed;
2) forming rifling on the surface of the rod to be processed through cutting treatment;
3) and scraping the surface of the rod to be processed.
Preferably, the heating device is an electromagnetic induction heating device.
Furthermore, an infrared temperature detection device and a controller are further arranged inside the heating cavity, the controller is connected with the infrared temperature detection device and the heating device, the infrared temperature detection device sends the detected temperature of the rod to be processed inside the heating cavity to the controller, and the controller compares the temperature of the rod to be processed inside the heating cavity with a value range of a preset rod temperature stored in the controller; when the temperature of the rod to be processed in the heating cavity does not accord with the value range of the preset rod temperature, the controller controls the output power of the heating device to be adjusted until the temperature of the rod to be processed in the heating cavity accords with the value range of the preset rod temperature.
Furthermore, the value range of the preset rod temperature is 100-700 ℃.
Preferably, the inert shielding gas is argon.
Preferably, in step four, the rotating speed of the extrusion wheel of the extruder is 4-20 rpm.
Preferably, the method for processing a copper rod or a copper alloy rod further includes: step five, the rod to be processed which is output after being extruded by the extruding machine is immersed in the liquid of the cooling water tank after passing through an output pipeline connected with the output end of the extruding machine, and the rod to be processed which is output from the cooling water tank is dried; the mass percent of the absolute ethyl alcohol in the liquid in the cooling water tank is 15-20%, and the balance is water.
Preferably, after the first step and before the second step, the cold-welded welding point of the rod material to be processed is subjected to annealing treatment.
As described above, the copper rod and the method for processing a copper alloy rod according to the present invention have the following advantageous effects:
1) in the invention, cold-pressing welding is adopted to weld the rod to be processed; cold pressure welding is to realize solid state welding by means of plastic deformation of copper or copper alloy to be welded under pressure at room temperature; the method has relatively simple operation and easy mastering of the operation process; meanwhile, the joint of the connected rods to be processed is not heated by cold pressure welding, so that a common softening zone, a common heat affected zone and a common brittle intermediate phase of a hot welding head are not generated, the residual stress is eliminated by annealing treatment, the interface bonding strength is improved, the occurrence of a wire breakage phenomenon is reduced in the subsequent wire drawing process, the processing efficiency is improved, and the processing requirements of the large-length copper and the alloy rod blank thereof are met;
2) before the copper rod and the copper alloy rod are extruded, the outer peripheral surface of the connected rod to be processed is cut and scraped, so that an oxide layer on the surface of the connected rod to be processed is removed, the effect of cleaning the surface of the rod to be processed by adopting a mechanical method is realized, the prepared rod to be processed can meet the requirements of high purity and high performance, the subsequent drawing of high-performance wires is facilitated, and meanwhile, the method reduces the pollution to the environment;
3) before the copper rod and the copper alloy rod are extruded, the rod to be processed is heated in an environment filled with inert protective gas, and compared with the traditional method, the heating method solves the following problems: moisture on the rod to be processed is removed, and the rod to be processed is softened, so that the optimal extrusion effect is achieved; the surface of the rod to be processed is not oxidized; the method has the advantages of effectively avoiding the conditions of bulging, cracking, blackening and the like on the surface of the rod to be processed after the rod to be processed is extruded, and improving the quality and the yield of the continuously extruded rod to be processed.
Detailed Description
The following description of the embodiments of the present invention is provided for illustrative purposes, and other advantages and effects of the present invention will become apparent to those skilled in the art from the present disclosure.
It should be understood that the structures, ratios, sizes, and the like of the present specification are only used for matching the contents disclosed in the specification, so as to be understood and read by those skilled in the art, and are not used to limit the conditions under which the present invention can be implemented, so that the present invention has no technical significance, and any structural modifications, changes in the ratio relationship, or adjustments of the size should fall within the scope of the present invention without affecting the efficacy and the achievable purpose of the present invention. In addition, the terms "upper", "lower", "left", "right", "middle" and "one" used in the present specification are for clarity of description, and are not intended to limit the scope of the present invention, and the relative relationship between the terms and the terms is not to be construed as a scope of the present invention.
The processing method of the copper rod and the copper alloy rod of the embodiment comprises the following steps:
the method comprises the following steps: connecting the rods to be processed by cold pressure welding;
step two: cutting and scraping the outer peripheral surface of the connected rod to be processed;
step three: conveying the rod material to be processed into a heating cavity, filling inert protective gas into the heating cavity, and heating the rod material to be processed by a heating device arranged in the heating cavity
Step four: and extruding the rod material to be processed by an extruder and then outputting the rod material.
In the invention, cold-pressing welding is adopted to weld the rod to be processed; cold pressure welding is to realize solid state welding by means of plastic deformation of copper or copper alloy to be welded under pressure at room temperature; meanwhile, the joint of the connected rods to be processed is not heated by cold pressure welding, so that a common softening zone, a common heat affected zone and a common brittle intermediate phase of a hot welding head are not generated, the occurrence of wire breakage is reduced in the subsequent wire drawing process, and the processing efficiency is improved;
before the copper rod and the copper alloy rod are extruded, the peripheral surface of the connected rod to be processed is cut and scraped, so that an oxide layer on the surface of the connected rod to be processed is removed, the effect of cleaning the surface of the rod to be processed by adopting a mechanical method is realized, the prepared rod to be processed can meet the requirements of high purity and high performance, the subsequent drawing of high-performance wires is facilitated, and meanwhile, the method reduces the pollution to the environment; in addition, the applicability of the extrusion equipment to raw materials is improved, and a continuous casting and rolling rod can be used as a copper rod extrusion raw material; in the conventional method, for example, acid washing, alkali washing and the like may be used to introduce substances which are easy to cause surface recontamination, such as acid lye, oil stain, emulsion, oxide layer and the like.
Before the copper rod and the copper alloy rod are extruded, the rod to be processed is heated in an environment filled with inert protective gas, and compared with the traditional method, the heating method solves the following problems: moisture on the rod to be processed is removed, and the rod to be processed is softened, so that the optimal extrusion effect is achieved; the surface of the rod to be processed is not oxidized; convenient operation and less waste.
In the first step, two rods to be processed are respectively placed into the die holes of the two oppositely arranged dies, and the cold welding machine drives the two dies to move in opposite directions, so that the two rods to be processed are subjected to cold welding. After two rods to be processed are respectively placed into the die holes of two oppositely arranged dies, the transverse gap between the dies is adjusted, and then welding is carried out; the method has relatively simple operation and easily mastered operation process.
In the second step, before the cutting and scraping treatment, the diameter of the rod to be processed is 6-30mm, and during the cutting treatment, the cutting depth of the rod to be processed is 0.05-0.2 mm. The cutting depth can remove the oxide layer on the outer peripheral surface of the rod to be processed.
The cutting and scraping process comprises the steps of:
1) rounding and straightening the rod to be processed;
2) forming rifling on the surface of the rod to be processed through cutting treatment;
3) and (4) scraping the surface of the rod to be processed.
The cutting and scraping treatment can effectively remove the oxide layer on the outer peripheral surface of the rod to be processed.
The power traction equipment drives the rod to be processed to move, and after the rod to be processed is connected, the rod to be processed passes through the straightening device before entering the cutting equipment. The linear speed of the power traction equipment and the speed of the extruder for extruding the rod to be processed are synchronously linked.
The heating device is an electromagnetic induction heating device. By using the method of the invention to heat the rod to be processed, the situations of bulging, cracks, blackening and the like on the surface of the rod to be processed after the rod to be processed is extruded can be effectively avoided, and the quality and the yield of the continuously extruded rod to be processed are improved.
The heating cavity is internally provided with an infrared temperature detection device and a controller, the controller is connected with the infrared temperature detection device and the electromagnetic induction heating device, the infrared temperature detection device sends the detected temperature of the rod to be processed in the heating cavity to the controller, and the controller compares the temperature of the rod to be processed in the heating cavity with a preset rod temperature value range stored in the controller; when the temperature of the rod to be processed in the heating cavity does not accord with the preset rod temperature value range, the controller controls the output power of the electromagnetic induction heating device to be adjusted until the temperature of the rod to be processed in the heating cavity accords with the preset rod temperature value range. This structure has realized the real-time detection and the real-time adjustment to the inside temperature of heating cavity.
The temperature of the preset rod material ranges from 100 ℃ to 700 ℃. The preset rod temperature is convenient for the rod to be processed to enter the extruder.
The inert shielding gas is argon. The argon gas is stable, and the surface of the rod to be processed can be ensured not to be oxidized.
In the fourth step, the rotating speed of the extrusion wheel of the extruder is 4-20 rpm. The power traction equipment drives the rod material to be processed to move at a speed of 4-30 m/min, and the rod-out size phi of the rod material to be processed extruded by the extruder is 3.0-20.0 mm. The rotating speed of an extrusion wheel of the extruder, the moving speed of the rod to be processed driven by the power traction equipment and the value range of the rod discharging speed of the rod to be processed extruded by the extruder can ensure that the produced copper rod and copper alloy rod meet the technical requirements.
The processing method of the copper rod material and the copper alloy rod material further comprises the following steps: step five, the rod to be processed which is output after being extruded by the extruding machine is immersed in the liquid of the cooling water tank after passing through an output pipeline connected with the output end of the extruding machine, and the rod to be processed which is output from the cooling water tank is dried; the mass percent of the absolute ethyl alcohol in the liquid in the cooling water tank is 15-20%, and the balance is water.
In the embodiment, in the absolute ethyl alcohol, the mass percent of the ethyl alcohol is more than 99.5 percent, and the balance is water. Drying the rod material to be processed output from the cooling water tank through an air knife system, wherein the mass percentage of the absolute ethyl alcohol in the liquid in the cooling water tank is 20%.
The liquid in the cooling water tank contains ethanol, the ethanol can reduce oxide layers on the surfaces of the copper rod and the copper alloy rod into copper, and finally the surfaces of the copper rod and the copper alloy rod are dried by using an air knife system, so that the bright surface quality of the copper rod and the copper alloy rod is ensured.
And after the first step and before the second step, annealing the welding point of the cold-press welding of the rod material to be processed so that the strength and the plasticity of the welding point are close to those of the rod material to be processed. In the embodiment, the annealing treatment is specifically performed by applying current to two ends of the cold-press welding point of the rod material to be processed, so that residual stress generated due to material deformation in the cold-press welding process is eliminated, and the interface bonding strength is improved.
The method of the embodiment can effectively ensure the rod-out surface quality of the copper rod and the copper alloy rod, so that the extruded rod can be directly used for the next working procedure, the copper rod and the copper alloy rod are prevented from being peeled and cut again, the working efficiency is improved, and the material loss is reduced.
Example 1
In this embodiment, the upward leading copper rod is selected as the rod to be processed, and the diameter of the upward leading copper rod is 16.0 mm. Selecting a die used for cold-pressing and welding a copper rod with the diameter of 16.0mm, respectively inserting two upward-leading copper rods into die holes of the two dies, adjusting a transverse gap between the dies, wherein the width of the gap is 6-10 mm, and starting a cold-pressing welding machine to completely close a gap of a vertical gap in the middle of the dies. And after the cold welding is confirmed to be firm, opening the die, removing the waste edges, and annealing the welding point of the cold welding of the rod material to be processed at the annealing current of 30-50A to finish the welding. And after the welded upper copper-leading rod passes through the pay-off device and the straightening device, cutting and scraping are carried out, the cutting depth of the rod to be processed is 0.05mm, and the linear speed of the upper copper-leading rod driven by the power traction equipment is synchronously linked with the whole production system. And (3) the cut up copper bar enters a heating cavity under the traction of a pay-off device and an extruder, high-purity argon is filled into the heating cavity, the purity of the argon is more than 99.990%, the gas flow of the argon is 5L/min, and the induction power of a heating device in the heating cavity is adjusted, so that the up copper bar is heated to 280-320 ℃. The rotating speed of an extrusion wheel of the extruder is matched with the paying-off speed of the paying-off device, the rotating speed of the extrusion wheel is 5-7 rpm, the paying-off speed of the paying-off device is 4-10 m/min, the size of the copper rod extruded by the extruder is 8mm, the strength of the copper rod extruded by the extruder is 230-260 Mpa, the elongation is 35-45%, and the electric conductivity is 98-101% IACS. The rod material to be processed which is output after being extruded by the extruder is immersed in the liquid of the cooling water tank after passing through an output pipeline connected with the output end of the extruder, and the rod material to be processed which is output from the cooling water tank is dried; the mass percent of the absolute ethyl alcohol in the liquid in the cooling water tank is 15-20%, and the balance is water.
Example 2:
the method comprises the following steps of selecting a high-purity copper-silver alloy rod material which is horizontally cast as a rod material to be processed, wherein the mass percent of silver in the high-purity copper-silver alloy rod material is less than or equal to 1%, and the sum of the mass percent of copper and the mass percent of silver is greater than or equal to 99.95%.
Selecting a die used for cold-pressing and welding the rod material with the diameter of 8.0mm, respectively inserting the two high-purity copper-silver alloy rod materials into die holes of the two dies, adjusting a transverse gap between the dies, wherein the width of the gap is 2-4 mm, and starting a cold-pressing welding machine to completely close a gap of a vertical gap in the middle of the dies. And after the cold-press welding is confirmed to be firm, opening the die, removing the waste edges, and annealing the cold-press welding point of the rod material to be processed at an annealing current of 10-15A to finish the welding.
And after the welded copper-silver alloy rod passes through the pay-off device and the straightening device, cutting and scraping are carried out, the cutting depth of the rod to be processed is 0.1mm, and the linear speed of the copper-silver alloy rod driven by the power traction equipment to move is synchronously linked with the whole production system.
The cut copper-silver alloy rod enters a heating cavity under the traction of a pay-off device and an extruder, high-purity argon is filled into the heating cavity, the purity of the argon is greater than 99.990%, the gas flow of the argon is 7L/min, and the induction power of a heating device in the heating cavity is adjusted, so that the copper-silver alloy rod is heated to 300-350 ℃. The rotating speed of an extrusion wheel of the extruder is matched with the paying-off speed of the paying-off device, the rotating speed of the extrusion wheel is 10-12 rpm, the paying-off speed of the paying-off device is 9-12 m/min, the size of the copper-silver alloy rod extruded by the extruder is 8.0mm, the strength of the copper-silver alloy rod extruded by the extruder is 230-330 MPa, the elongation is 25-40%, and the electric conductivity is 92-98% IACS. The rod material to be processed which is output after being extruded by the extruder is immersed in the liquid of the cooling water tank after passing through an output pipeline connected with the output end of the extruder, and the rod material to be processed which is output from the cooling water tank is dried; the mass percent of the absolute ethyl alcohol in the liquid in the cooling water tank is 15-20%, and the balance is water.
Example 3
The copper-magnesium alloy rod material prepared by an upward drawing method is selected as the rod material to be processed, the diameter of the copper-magnesium alloy rod material is 8mm, the mass percent of magnesium of the copper-magnesium alloy rod material is less than or equal to 0.04%, and the sum of the mass percent of copper and the mass percent of magnesium is greater than or equal to 99.95%.
Selecting a die used for cold-pressing and welding the rod material with the diameter of 8mm, respectively inserting the two copper-magnesium alloy rod materials into die holes of the two dies, adjusting a transverse gap between the dies, wherein the width of the gap is 2-8 mm, and starting a cold-pressing welding machine to completely close the gap of a vertical gap in the middle of the dies. And after the cold-press welding is confirmed to be firm, opening the die, removing the waste edges, and annealing the cold-press welding point of the rod material to be processed at an annealing current of 10-15A to finish the welding.
And after the welded copper-magnesium alloy rod passes through the pay-off device and the straightening device, cutting and scraping are carried out, the cutting depth of the rod to be processed is 0.05mm, and the linear speed of the power traction equipment driving the copper-magnesium alloy rod to move is synchronously linked with the whole production system.
The cut copper-silver alloy rod enters a heating cavity under the traction of a pay-off device and an extruder, high-purity argon is filled into the heating cavity, the purity of the argon is greater than 99.990%, the gas flow of the argon is 5L/min, and the induction power of a heating device in the heating cavity is adjusted, so that the copper-magnesium alloy rod is heated to 350-400 ℃. The rotating speed of an extrusion wheel of the extruder is matched with the paying-off speed of the paying-off device, the rotating speed of the extrusion wheel is 5-7 rpm, the paying-off speed of the paying-off device is 4-8 m/min, the size of the copper-magnesium alloy rod extruded by the extruder is 16mm, the strength of the copper-magnesium alloy rod extruded by the extruder is 350-500 Mpa, the elongation is 10-16%, and the electric conductivity is 85.0-95.0% IACS. The rod material to be processed which is output after being extruded by the extruder is immersed in the liquid of the cooling water tank after passing through an output pipeline connected with the output end of the extruder, and the rod material to be processed which is output from the cooling water tank is dried; the mass percent of the absolute ethyl alcohol in the liquid in the cooling water tank is 15-20%, and the balance is water.
The method has the advantages of simple operation process and high efficiency, and the prepared copper rod and copper alloy rod have excellent performance.
In conclusion, the present embodiment effectively overcomes various disadvantages of the prior art and has high industrial utility value.
The above embodiments are merely illustrative of the principles and effects of the present embodiments, and are not to be construed as limiting the present embodiments. Any person skilled in the art can modify or change the above-mentioned embodiments without departing from the spirit and scope of the present invention. Accordingly, it is intended that all equivalent modifications or changes which may be made by those skilled in the art without departing from the spirit and technical concepts disclosed in the present embodiment be covered by the claims of the present embodiment.
Claims (10)
1. A processing method of a copper rod and a copper alloy rod is characterized by comprising the following steps:
the method comprises the following steps: connecting the rods to be processed by cold pressure welding;
step two: cutting and scraping the outer peripheral surface of the connected rod material to be processed;
step three: conveying the rod material to be processed into a heating cavity, filling inert protective gas into the heating cavity, and heating the rod material to be processed by a heating device arranged in the heating cavity;
step four: extruding the rod material to be processed by an extruder and then outputting the extruded rod material;
and after the first step and before the second step, annealing the cold-press welding point of the rod material to be processed, wherein the annealing process is to apply current to the cold-press welding point of the rod material to be processed.
2. The method of processing a copper rod or a copper alloy rod according to claim 1, wherein: in the first step, the two rods to be processed are respectively placed into the die holes of two oppositely arranged dies, and the cold welding machine drives the two dies to move oppositely, so that the two rods to be processed are subjected to cold welding.
3. The method of processing a copper rod or a copper alloy rod according to claim 1, wherein: in the second step, before the cutting and scraping treatment, the diameter of the rod to be processed is 6-30mm, and during the cutting treatment, the cutting depth of the rod to be processed is 0.05-0.2 mm.
4. The method of processing a copper rod or a copper alloy rod according to claim 3, wherein:
the cutting and scraping process comprises the steps of:
1) rounding and straightening the rod to be processed;
2) forming rifling on the surface of the rod to be processed through cutting treatment;
3) and scraping the surface of the rod to be processed.
5. The method of processing a copper rod or a copper alloy rod according to claim 1, wherein: the heating device is an electromagnetic induction heating device.
6. The method of processing a copper rod or a copper alloy rod according to claim 5, wherein: the heating device comprises a heating cavity, and is characterized in that an infrared temperature detection device and a controller are further arranged inside the heating cavity, the controller is connected with the infrared temperature detection device and the heating device, the infrared temperature detection device sends the detected temperature of the rod to be processed inside the heating cavity to the controller, and the controller compares the temperature of the rod to be processed inside the heating cavity with a value range of a preset rod temperature stored in the controller; when the temperature of the rod to be processed in the heating cavity does not accord with the value range of the preset rod temperature, the controller controls the output power of the heating device to be adjusted until the temperature of the rod to be processed in the heating cavity accords with the value range of the preset rod temperature.
7. The method of processing a copper rod or a copper alloy rod according to claim 6, wherein: the value range of the preset rod temperature is 100-700 ℃.
8. The method of processing a copper rod or a copper alloy rod according to claim 1, wherein: the inert protective gas is argon.
9. The method of processing a copper rod or a copper alloy rod according to claim 1, wherein: in the fourth step, the rotating speed of the extrusion wheel of the extruder is 4-20 rpm.
10. The method of processing a copper rod or a copper alloy rod according to claim 1, wherein: further comprising: step five, the rod to be processed which is output after being extruded by the extruding machine is immersed in the liquid of the cooling water tank after passing through an output pipeline connected with the output end of the extruding machine, and the rod to be processed which is output from the cooling water tank is dried; the mass percent of the absolute ethyl alcohol in the liquid in the cooling water tank is 15-20%, and the balance is water.
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| JP3695192B2 (en) * | 1999-01-22 | 2005-09-14 | 日立電線株式会社 | Manufacturing method of composite metal tube |
| CN1575906A (en) * | 2003-07-29 | 2005-02-09 | 上海必达意线材设备有限公司 | Integral structure for cold pressure welding equipment |
| CN101224544B (en) * | 2008-01-30 | 2010-06-02 | 江阴华电新材料有限公司 | Producing method of lead frame cuprum alloy strip with high strength and conductivity |
| CN102294376B (en) * | 2011-08-31 | 2013-04-24 | 常州日月机械有限公司 | Continuous extrusion method and equipment for lead brass |
| CN102303058A (en) * | 2011-09-19 | 2012-01-04 | 上海理工大学 | Copper and copper alloy continuous extrusion device and extrusion method for the same |
| CN202570813U (en) * | 2012-04-12 | 2012-12-05 | 四川晶剑电子材料有限公司 | Novel continuous extruding device |
| CN103962409B (en) * | 2014-05-20 | 2016-06-08 | 王国华 | The manufacture method of a kind of copper cash |
| CN204954149U (en) * | 2015-06-10 | 2016-01-13 | 大连通发复合线缆科技发展有限公司 | Copper -clad aluminum conductor material broken end welding treatment device of colding pressing |
| CN107377658A (en) * | 2017-06-16 | 2017-11-24 | 陕西天马电缆有限公司 | The hard state of high-performance and the continuous manufacture system of half-hard state copper cash and its manufacture method |
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2018
- 2018-05-23 CN CN201810502458.5A patent/CN110523800B/en active Active
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