Manufacturing method of armored cable and armored cable

Abstract

The invention relates to a manufacturing method of an armored cable and the armored cable. The manufacturing method comprises the following steps: cleaning and drying a copper pipe and a steel pipe, straightening, cleaning and drying a copper wire, pressing an insulator into a cylindrical shape, sintering, and preserving heat; the first filler is placed in the copper pipe, then the copper wire penetrates into the filler, and a first combination is obtained; repeatedly drawing the first assembly, cleaning, and finally baking to obtain a semi-finished product; semi-finished product detection; placing a second filler into the steel pipe, penetrating the semi-finished product into the second filler to obtain a second assembly, repeatedly drawing the second assembly, cleaning, and finally baking to obtain a finished product; finished product detection. The manufacturing method of the armored cable and the armored cable have the following advantages that drawing oil is removed through cleaning, the drawing oil is prevented from corroding the copper wires, moisture is removed through baking, inner pipe cracking caused by thermal expansion during secondary drawing is avoided, and the quality, the qualified rate and the yield of products are improved.

Description

Technical Field

[0001] This invention relates to the field of cable manufacturing technology, and in particular to a method for manufacturing an armored cable and the armored cable itself. Background Technology

[0002] With my country's economic development, the demand for electricity from all walks of life has increased. Cables are widely used in power transmission and distribution, mining and other fields. In some harsh and complex application scenarios, such as soil pressure and external excavation impact during burial, friction and compression inside the pipeline, and gnaws by rodents in the wild, the structural integrity of the cable will be affected. Cable laying is costly and damage will cause significant economic losses. Therefore, armored cables are often chosen for field laying, and the demand for armored cables is increasing day by day.

[0003] In existing technologies, such as the Chinese invention patent authorization announcement number CN101707076B, a triaxial mineral-insulated cable and its manufacturing method are disclosed, including the following steps: ① pressing and sintering of inner and outer insulation layers; ② assembly, drawing, and annealing of the inner conductor layer, inner insulation dielectric layer, and inner shielding layer; ③ testing of the first-stage semi-finished product; ④ assembly, drawing, and annealing of the first-stage semi-finished product, outer insulation dielectric layer, and outer shielding layer; ⑤ testing of the second-stage semi-finished product; ⑥ assembly, drawing, and annealing of the second-stage semi-finished product and sheath layer. However, this manufacturing method does not perform cleaning after drawing and annealing, leaving residual surface oil. The drawing oil contains chlorinated paraffin, and chlorine penetration will cause chlorine corrosion of the core wire, reducing product quality. Summary of the Invention

[0004] One objective of this application is to provide a method for manufacturing an armored cable and an armored cable that can remove drawing oil and ensure product quality.

[0005] The technical solution adopted in this application is: a method for manufacturing armored cables, comprising the following steps: Step S1: Raw material pretreatment: Clean and dry the copper pipe and steel pipe, straighten the copper wire, clean and dry it, press the insulation into a cylindrical first filler and second filler and then sinter it, and keep the sintered first filler and second filler warm. Step S2, Integrated Assembly: Place the first filler into the copper tube, then thread the copper wire through the filler to obtain the first assembly, press the two ends of the first assembly together, and then roll the front end of the first assembly. Step S3, Semi-finished product production: The first assembly is repeatedly stretched, then cleaned, and finally baked to obtain a semi-finished product; the first assembly needs to be annealed during the stretching process. Step S4, Semi-finished product inspection: Inspect the quality of the semi-finished products, and scrap any semi-finished products that fail the inspection. Step S5, Finished Product Production: Place the second filler into the steel pipe, then insert the semi-finished product into the second filler to obtain the second assembly. Repeatedly pull the second assembly, then seal both ends and clean it. Finally, bake it to obtain the finished product. The second assembly needs to be annealed during the pulling process. Step S6, Finished Product Inspection: Inspect the quality of the finished products. Products that fail the inspection shall be scrapped.

[0006] In some embodiments of this application, the insulating material is any one or more of magnesium oxide, aluminum oxide, and silicon dioxide.

[0007] In some embodiments of this application, in step S3, after the last annealing process and before cleaning, the two ends of the first assembly need to be temporarily sealed to prevent water from entering the interior of the first assembly.

[0008] In some embodiments of this application, in step S3, the first assembly needs to be ground after cleaning and before baking.

[0009] In some embodiments of this application, in step S5, the second assembly needs to be ground after cleaning and before baking.

[0010] In some embodiments of this application, the cleaning in steps S3 and S5 is performed using ultrasonic cleaning.

[0011] In some embodiments of this application, in step S1, the copper wire is polished before being cut.

[0012] In some embodiments of this application, the baking temperature is 550±50℃; the annealing temperature is 550℃.

[0013] In some embodiments of this application, the diameter of the first filler in step S1 is 1% to 2% larger than the diameter of the first filler after the drawing and annealing treatment in step S3; the diameter of the second filler in step S1 is 1% to 2% larger than the diameter of the second filler after the drawing and annealing treatment in step S5.

[0014] An armored cable manufactured using the above-described method comprises: wire core; The first armor layer, sleeved outside the core, has a cylindrical structure; The second armor layer is fitted over the first armor layer and has a cylindrical structure. The first filler layer is disposed between the wire core and the first armor layer to fill the gap between the wire core and the first armor layer; The second filling layer is disposed between the first armor layer and the second armor layer and is used to fill the gap between the first armor layer and the second armor layer; The core is formed of copper wire, the first filler layer is formed of the first filler, the first armor layer is formed of copper tube, the second filler layer is formed of the second filler, and the second armor layer is formed of steel tube.

[0015] The present invention provides a method for manufacturing an armored cable and the armored cable itself, which has the following advantages: 1. Cleaning removes drawing oil, preventing corrosion of the copper wire; baking removes moisture and avoids cracking of the inner tube due to thermal expansion during secondary drawing, thus improving product quality, yield, and output; 2. Sealing both ends before cleaning ensures cleaning effectiveness while preventing water from entering and affecting the cable's interior; 3. Pressing both ends of the first assembly fixes the position of the insulation and copper tube, preventing gaps; rolling the front end of the first assembly facilitates subsequent drawing; 4. Grinding the first and second assemblies makes the surface smoother and removes the oxide layer and dirt, allowing the first assembly to fit more tightly with the outer layer; 5. Controlling the initial diameter of the first and second fillers to be slightly larger than the actual required diameter leaves a margin for drawing, improving product quality and yield. Attached Figure Description

[0016] Figure 1 This is a flowchart of the manufacturing method of Embodiment 1 of the present invention; Figure 2 This is a structural schematic diagram of Embodiment 2 of the present invention. Figure 1 ; Figure 3 This is a structural schematic diagram of Embodiment 2 of the present invention. Figure 2 ; Figure 4 This is a cross-sectional structural diagram of the first filling layer in Embodiment 2 of the present invention.

[0017] In the diagram: 1. Core wire; 2. First filler layer; 3. First armor layer; 4. Second armor layer; 5. Second filler layer; 21. Mounting hole. Detailed Implementation

[0018] To enable those skilled in the art to better understand the technical solutions of this disclosure, the following detailed, clear, and complete description of this disclosure is provided in conjunction with the accompanying drawings and embodiments. It should be understood that the specific embodiments described herein are merely illustrative of this disclosure and are not intended to limit it.

[0019] In the description of this application, the use of "first" and "second" is for the purpose of distinguishing technical features only, and should not be construed as indicating or implying relative importance or implicitly indicating the number of technical features indicated or the order of the technical features indicated.

[0020] Those skilled in the art should understand that in the disclosure of this application, the terms "longitudinal", "lateral", "up", "down", "front", "back", "left", "right", "vertical", "horizontal", "top", "bottom", "inner", "outer", etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are only for the convenience of describing this application and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, the above terms should not be construed as limitations on this application.

[0021] Example 1: This embodiment provides a method for manufacturing an armored cable, such as... Figure 1 As shown, it includes the following steps: Step S1: Raw material pretreatment: Clean and dry the copper pipe and steel pipe, polish and cut the copper wire, straighten it, clean and dry it, press the insulation into a cylindrical first filler and second filler, sinter it, and keep the sintered first filler and second filler warm. Step S2, Integrated Assembly: Place the first filler into the copper tube, then thread the copper wire through the filler to obtain the first assembly, press the two ends of the first assembly together, and then roll the front end of the first assembly. Step S3, Semi-finished product production: The first assembly is repeatedly drawn, then the two ends are temporarily sealed and cleaned, then ground, and finally baked to obtain the semi-finished product; the first assembly needs to be annealed during the drawing process; Step S4, Semi-finished product inspection: Inspect the quality of the semi-finished products, and scrap any semi-finished products that fail the inspection. Step S5, Finished Product Production: Place the second filler into the steel pipe, then insert the semi-finished product into the second filler to obtain the second assembly. Repeatedly pull the second assembly, then seal both ends and clean it, then grind it, and finally bake it to obtain the finished product. The second assembly needs to be annealed during the pulling process. Step S6, Finished Product Inspection: Inspect the quality of the finished products. Products that fail the inspection shall be scrapped.

[0022] After drawing, residual oil stains remain on the surface. The drawing oil contains chlorinated paraffin, and the chlorine can penetrate and corrode the core wire. Cleaning can remove these oil stains and ensure the product's service life. During the semi-finished product manufacturing process, the first assembly undergoes repeated drawing. During the finished product manufacturing process, the second assembly also undergoes repeated drawing. At this point, the semi-finished product is essentially undergoing a second drawing, which can easily cause the inner tube to crack due to thermal expansion. In this manufacturing method, after the first assembly has undergone repeated drawing, it is then baked once more. This removes the moisture from the cleaning process and prevents the inner tube from cracking due to thermal expansion during the subsequent second drawing, thereby improving the product qualification rate and increasing production. The front end of the first assembly is for changing the diameter before entering the drawing die, facilitating subsequent drawing. The ends of the first assembly are pressed to fix the position of the insulating copper or steel tube and prevent gaps.

[0023] To ensure reliable insulation, the insulation material is any one or more of magnesium oxide, aluminum oxide, and silicon dioxide. In practical applications, the materials used in the armored cable can be flexibly selected according to the operating environment, enabling the armored cable to provide corresponding protection. For example, MgO has good insulation properties, good fire resistance and thermal conductivity, and is relatively stable at high temperatures; Al2O3 has good thermal conductivity, is inert, and is relatively stable; SiO2 has a reinforcing effect and good waterproofing.

[0024] In step S3, the temporary sealing of both ends of the first assembly after the last annealing treatment and before cleaning is to ensure that the cleaning treatment does not affect the product and prevent water from entering the interior of the first assembly. This avoids water entering during the cleaning process in the next step. If there is water inside the cable, it may cause thermal expansion and cracking during subsequent processing or operation, affecting the output and quality of the product. The temporary sealing of both ends does not affect subsequent processing. It can either be left to fall off naturally during processing or removed manually.

[0025] In step S5, the sealing of both ends of the second assembly after the last annealing treatment and before cleaning is to ensure that the cleaning treatment does not affect the product and prevent water from entering the interior of the second assembly. This avoids water entering during the cleaning process in the next step. If there is water inside the cable, subsequent processing heating or working heat may cause thermal expansion and cracking, affecting the output and quality of the product.

[0026] In this embodiment, the two ends of the copper wire extend out to block the circuit, which does not affect subsequent testing.

[0027] In step S3, the first assembly is subjected to a grinding process after cleaning and before baking in order to enhance the bonding effect. After the first assembly is pulled, an uneven surface will be generated on the surface of the first assembly. The grinding process can make the surface of the first assembly smoother. At the same time, the grinding process can remove the oxide layer and dirt attached to the surface, so that the first assembly can fit more tightly with the outer layer.

[0028] In step S5, the second assembly is subjected to a grinding process after cleaning and before baking in order to smooth the surface. After the second assembly is drawn, an uneven surface will be generated on the surface of the second assembly. The grinding process can make the surface of the second assembly smoother, and at the same time, the grinding process can remove the oxide layer and dirt attached to the surface.

[0029] To ensure reliable cleaning, ultrasonic cleaning is employed in steps S3 and S5. Ultrasonic cleaning effectively removes oil, metal debris, and other impurities from the surfaces of the first and second assemblies, offering high cleaning efficiency without damaging the material surfaces.

[0030] In step S1, the copper wire is polished before being straightened and then cut to ensure reliable installation. Polishing removes the oxide layer and dirt adhering to the surface, allowing the copper wire to fit more tightly with the first filler. Cutting is used to cut the copper wire to a suitable length for subsequent processing.

[0031] To achieve better baking results, the baking temperature is 550±50℃.

[0032] To achieve a better annealing effect, the annealing temperature is 550℃.

[0033] To ensure the dimensions of the finished product after manufacturing, the diameter of the first filler in step S1 is 1% to 2% larger than the diameter of the first filler after the drawing and annealing process in step S3. During the drawing process of the first assembly, the first filler will also be subjected to pressure, causing the diameter of the first filler to shrink. That is, the diameter of the first filler will decrease after drawing. The initial diameter of the first filler is 1% to 2% larger than the actual required diameter, so that it meets the actual required dimensions after drawing and ensures the quality of the finished product.

[0034] To ensure the dimensions of the finished product after manufacturing, the diameter of the second filler in step S1 is 1% to 2% larger than the diameter of the second filler after the drawing and annealing process in step S5. During the drawing process of the second assembly, the second filler is also subjected to pressure, causing its diameter to shrink. That is, the diameter of the second filler will decrease after drawing. The initial diameter of the second filler is 1% to 2% larger than the actual required diameter, which ensures that the dimensions meet the actual requirements after drawing and guarantees the quality of the finished product.

[0035] For reliable transmission, the copper wire can be replaced by any of the following: silver wire or silver-copper alloy wire. The copper wire can be replaced according to actual needs to obtain better performance or lower cost.

[0036] Example 2: This embodiment provides an armored cable manufactured using the method described in Embodiment 1, such as... Figures 2-4 As shown, it includes a conductor 1, a first armor layer 3, a second armor layer 4, a first filler layer 2, and a second filler layer 5. The armored cable has a central origin, and the first armor layer 3, the second armor layer 4, the first filler layer 2, and the second filler layer 5 are all centered around the central origin. There are at least two conductors 1, and all conductors 1 are arranged in parallel and spaced apart along the length of the conductor 1, and the conductors 1 are distributed at equal intervals along the same circumference with the central origin as the center.

[0037] The copper wire, after being manufactured, becomes the wire core 1 in this embodiment; the first filler, after being manufactured, becomes the first filler layer 2 in this embodiment; the copper tube, after being manufactured, becomes the first armor layer 3 in this embodiment; the second filler, after being manufactured, becomes the second filler layer 5 in this embodiment; and the steel tube, after being manufactured, becomes the second armor layer 4 in this embodiment.

[0038] Specifically, the first armor layer 3 is fitted over the core 1, and the first filler layer 2 is disposed between the core 1 and the first armor layer 3 to fill the gap between the core 1 and the first armor layer 3; the second armor layer 4 is fitted over the first armor layer 3, and the second filler layer 5 is disposed between the first armor layer 3 and the second armor layer 4 to fill the gap between the first armor layer 3 and the second armor layer 4. In this application, by setting two armor layers, the structural strength of the armored cable can be greatly increased, giving the armored cable strong protective capabilities and protecting the conductor 1 from damage as much as possible. In addition, the first armor layer 3 and the second armor layer 4 are both cylindrical structures, which gives the first armor layer 3 and the second armor layer 4 good integrity and strong anti-leakage effect, further enhancing the service life of the armored cable. At the same time, the armored cable has two side filler layers. The first filler layer 2 and the second filler layer 5 have buffering, moisture-proof and water-blocking, and heat insulation properties, and can also improve the tensile strength of the cable, further improving the reliability and service life of the armored cable.

[0039] The first armor layer 3 is made of copper or stainless steel and is integrally formed, that is, the first armor layer 3 is an integrally formed cylindrical structure. Compared with the armor layer of the prior art which is formed by metal wire weaving, the first armor layer 3 of this application has a better anti-leakage effect, better protection effect and higher structural strength.

[0040] Correspondingly, the second armor layer 4 is made of copper or stainless steel and is integrally formed, that is, the second armor layer 4 is an integrally formed cylindrical structure. Compared with the armor layer of the prior art which is formed by metal wire weaving, the second armor layer 4 of this application has a better anti-leakage effect, better protection effect, and higher structural strength.

[0041] The first armor layer 3 and the second armor layer 4 can be made of 316L stainless steel, which has excellent corrosion resistance, making the armored cable suitable for fields with corrosive properties and harsh environments.

[0042] In this application, the core 1 is made of copper.

[0043] In this application, the first filling layer 2 is made of any one or more of magnesium oxide, aluminum oxide, and silicon dioxide; similarly, the second filling layer 5 is made of any one or more of magnesium oxide, aluminum oxide, and silicon dioxide. In actual use, the materials can be flexibly selected according to the usage environment of the armored cable to give the armored cable corresponding protective functions. For example, MgO has good insulation, fire resistance, thermal conductivity, and is relatively stable at high temperatures; Al2O3 has good thermal conductivity, is inert, and is relatively stable; SiO2 has a reinforcing effect and good waterproof effect. Therefore, one or more of these materials can be selected to form the first filling layer 2 and the second filling layer 5 according to actual needs. The materials used to make the first filling layer 2 and the second filling layer 5 can be the same or different. Appropriate materials and ratios can be selected according to the function of the first filling layer 2 and the second filling layer 5 to give the armored cable the best performance.

[0044] In this application, as Figures 2 to 3 As shown, the radial thickness of the first armor layer 3 is D1, the radial gap between the first armor layer 3 and the second armor layer 4 is d, and the radial thickness of the second armor layer 4 is D2, where D2>D1, that is, the radial thickness of the second armor layer 4 is greater than the radial thickness of the first armor layer 3. This can increase the protective strength of the outermost layer of the armored cable while reducing the manufacturing difficulty of the armored cable. In addition, d>D1, that is, the thickness of the second filler layer 5 is greater than the thickness of the first armor layer 3, which can increase the external protection effect of the armored cable.

[0045] Wherein, D1:d=1 / 3~2 / 5, D1:D2=1 / 2~1 / 3, the thickness ratio of the first armor layer 3, the second filler layer 5, and the second armor layer 4 is controlled within this range, so that the armored cable has strong protective strength.

[0046] Further extensions are made based on the above embodiments; in this embodiment, such as Figure 2 As shown, there are four wire cores 1, and the radial cross-sectional area of ​​each wire core 1 is 1.5 mm². 2Four wire cores 1 are evenly spaced along the same circumference. The radial distance R from the center of wire core 1 to the central origin is 1.30~1.40mm. The diameter of wire core 1 is approximately 1.38mm. The radial distance between the inner wall surface of wire core 1 and the central origin is 0.79mm. The radial gap between the outer wall surface of wire core 1 and the inner wall surface of the first armor layer 3 is 0.73mm. The diameter of the first armor layer 3 is Φ1, and the thickness is D1, where Φ1=6.4mm and D1=0.3mm. The diameter of the second armor layer 4 is Φ2, and the thickness is D2, where Φ2 = 9.95~10.15mm and D2 ≤ 1.0mm. The tolerance of the second armor layer 4 is between -0.05mm and +0.15mm, meaning that the thickness of the second armor layer 4 can be set to any one of 9.95mm, 10.00mm, 10.05mm, 10.10mm, or 10.15mm, and this range will not affect the performance of the armored cable.

[0047] In this embodiment, the first armor layer 3 is made of copper, the second armor layer 4 is made of 316L stainless steel, and both the first filler layer 2 and the second filler layer 5 are made of magnesium oxide. The radial thickness of the first armor layer 3 is preferably 0.3 mm, the radial thickness of the second armor layer 4 is preferably 1 mm, the radial thickness of the second filler layer 5 is preferably 0.8 mm, the diameter of the wire core 1 is approximately 1.38 mm, and the radial cross-sectional area of ​​each wire core 1 is 1.5 mm². 2 .

[0048] In another alternative embodiment, such as Figure 3 As shown, there are eight wire cores 1, and the radial cross-sectional area of ​​each wire core 1 is 1.0 mm². 2 Eight wire cores 1 are evenly spaced along the same circumference. The radial distance R from the center of wire core 1 to the central origin is 2.30~2.40mm. The diameter of wire core 1 is approximately 1.13mm. The radial distance between the inner wall of wire core 1 and the central origin is 1.83mm. The radial gap between the outer wall of wire core 1 and the inner wall of the first armor layer 3 is 0.75mm. The diameter of the first armor layer 3 is Φ1, and the thickness is D1, Φ1=8mm, D1=0.3~0.4mm. The diameter of the second armor layer 4 is Φ2, and the thickness is D2, Φ2=11.95~12.15mm, D2≤1.2mm. The tolerance of the second armor layer 4 is between -0.05mm and +0.15mm, meaning that the thickness of the second armor layer 4 can be set to any one of 11.95mm, 12.00mm, 12.05mm, 12.10mm, or 12.15mm. Within this range, the performance of the armored cable will not be affected.

[0049] In this embodiment, the first armor layer 3 is made of copper, the second armor layer 4 is made of 316L stainless steel, and both the first filler layer 2 and the second filler layer 5 are made of magnesium oxide. The radial thickness of the first armor layer 3 is preferably 0.3 mm, the radial thickness of the second armor layer 4 is preferably 1.2 mm, the radial thickness of the second filler layer 5 is preferably 0.8 mm, the diameter of the wire core 1 is approximately 1.13 mm, and the radial cross-sectional area of ​​each wire core 1 is 1.0 mm². 2 .

[0050] Based on any of the above embodiments, further improvements can be made to the armored cable; such as... Figure 4 As shown, in this embodiment, the first filling layer 2 is a cylindrical structure, and the first filling layer 2 is provided with mounting holes 21. The mounting holes 21 are used for the wire core 1 to pass through. Each mounting hole 21 corresponds to one wire core 1, and the outer diameter of the wire core 1 is less than or equal to the inner diameter of the mounting hole 21, so that the first filling layer 2 can be smoothly fitted onto the outside of the wire core 1 and the installation can be successfully completed.

[0051] In this embodiment, the inner diameter of the first armor layer 3 is smaller than the outer diameter of the first filler layer 2, thereby enabling the first armor layer 3 to apply radial clamping force to the first filler layer 2, so that the outer wall surface of the core 1 is in contact with the inner wall surface of the mounting hole 21, and the outer wall surface of the first filler layer 2 is in contact with the inner wall surface of the first armor layer 3, to ensure the tightness and firmness of the connection between the first armor layer 3, the first filler layer 2, and the core 1; wherein the inner wall surface of the second filler layer 5 is in contact with the outer wall surface of the first armor layer 3, and the outer wall surface of the second filler layer 5 is in contact with the inner wall surface of the second armor layer 4. The inner diameter of the second armor layer 4 can be set slightly smaller than the outer diameter of the second filler layer 5 to ensure the tightness and firmness of the connection between the second armor layer 4 and the second filler layer 5, thereby ensuring the structural stability and service life of the armored cable.

[0052] The above description is merely a preferred embodiment of the present invention and is not intended to limit the present invention in any way. Although the present invention has been disclosed above with reference to preferred embodiments, it is not intended to limit the present invention. Any person skilled in the art can make some modifications or alterations to the above-disclosed technical content to create equivalent embodiments without departing from the scope of the present invention. Any simple modifications, equivalent changes and alterations made to the above embodiments based on the technical essence of the present invention without departing from the scope of the present invention shall still fall within the scope of the present invention.

Claims

1. A method for manufacturing an armored cable, characterized in that, Includes the following steps: Step S1: Raw material pretreatment: Clean and dry the copper pipe and steel pipe, straighten the copper wire, clean and dry it, press the insulation into a cylindrical first filler and second filler and then sinter it, and keep the sintered first filler and second filler warm. Step S2, Integrated Assembly: Place the first filler into the copper tube, then thread the copper wire through the filler to obtain the first assembly, press the two ends of the first assembly together, and then roll the front end of the first assembly. Step S3, Semi-finished product production: The first assembly is repeatedly stretched, then cleaned, and finally baked to obtain a semi-finished product; the first assembly needs to be annealed during the stretching process. Step S4, Semi-finished product inspection: Inspect the quality of the semi-finished products, and scrap any semi-finished products that fail the inspection. Step S5, Finished Product Production: Place the second filler into the steel pipe, then insert the semi-finished product into the second filler to obtain the second assembly. Repeatedly pull the second assembly, then seal both ends and clean it. Finally, bake it to obtain the finished product. The second assembly needs to be annealed during the pulling process. Step S6, Finished Product Inspection: Inspect the quality of the finished products. Products that fail the inspection shall be scrapped.

2. The method for manufacturing an armored cable according to claim 1, characterized in that, The insulating material is any one or more of magnesium oxide, aluminum oxide, and silicon dioxide.

3. The method for manufacturing an armored cable according to claim 1, characterized in that, In step S3, after the last annealing process and before cleaning, the two ends of the first assembly need to be temporarily sealed to prevent water from entering the interior of the first assembly.

4. The method for manufacturing an armored cable according to claim 1, characterized in that, In step S3, the first assembly needs to be ground after cleaning and before baking.

5. A method for manufacturing an armored cable according to claim 1, characterized in that, In step S5, the second assembly needs to be ground after cleaning and before baking.

6. A method for manufacturing an armored cable according to claim 1, characterized in that, The cleaning in steps S3 and S5 is performed using ultrasonic cleaning.

7. A method for manufacturing an armored cable according to claim 1, characterized in that, In step S1, the copper wire is polished before being straightened and then cut.

8. A method for manufacturing an armored cable according to claim 1, characterized in that, The baking temperature is 550±50℃; the annealing temperature is 550℃.

9. A method for manufacturing an armored cable according to claim 1, characterized in that, In step S1, the diameter of the first filler is 1% to 2% larger than the diameter of the first filler after the drawing and annealing process in step S3; in step S1, the diameter of the second filler is 1% to 2% larger than the diameter of the second filler after the drawing and annealing process in step S5.

10. An armored cable manufactured using the method described in any one of claims 1-9, characterized in that, include: Core (1); The first armor layer (3) is sleeved outside the core (1) and has a cylindrical structure; The second armor layer (4) is fitted over the first armor layer (3) and has a cylindrical structure. The first filling layer (2) is disposed between the wire core (1) and the first armor layer (3) to fill the gap between the wire core (1) and the first armor layer (3); The second filling layer (5) is disposed between the first armor layer (3) and the second armor layer (4) and is used to fill the gap between the first armor layer (3) and the second armor layer (4); The wire core (1) is formed from the copper wire, the first filling layer (2) is formed from the first filler, the first armor layer (3) is formed from the copper tube, the second filling layer (5) is formed from the second filler, and the second armor layer (4) is formed from the steel tube.

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