CN111292898A - Cable production process - Google Patents
Cable production process Download PDFInfo
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- CN111292898A CN111292898A CN202010104541.4A CN202010104541A CN111292898A CN 111292898 A CN111292898 A CN 111292898A CN 202010104541 A CN202010104541 A CN 202010104541A CN 111292898 A CN111292898 A CN 111292898A
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/0016—Apparatus or processes specially adapted for manufacturing conductors or cables for heat treatment
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/02—Stranding-up
- H01B13/0207—Details; Auxiliary devices
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/06—Insulating conductors or cables
- H01B13/14—Insulating conductors or cables by extrusion
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- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B13/00—Apparatus or processes specially adapted for manufacturing conductors or cables
- H01B13/22—Sheathing; Armouring; Screening; Applying other protective layers
- H01B13/24—Sheathing; Armouring; Screening; Applying other protective layers by extrusion
Abstract
The invention discloses a cable production process, which has the technical scheme key points that: the method specifically comprises the following steps: s1, drawing the monofilament: at normal temperature, the copper rod passes through one or more die holes of a drawing die by a wire drawing machine; s2, annealing the monofilaments; s3, stranding a lead; s4, insulating extrusion; s5, cabling: filling an insulating material between the outside of the stranded conductor core and the insulating layer, and stranding the cable obtained in the S4 into a round shape in a non-back twist mode; s6, extruding and wrapping an inner sheath: an inner sheath is extruded between the insulating layer and the insulating material and comprises an inner protective layer of an isolating sleeve and a wrapping inner protective layer; s7, extruding an outer sheath: directly extruding and coating the plastic outer sheath by using a plastic extruding machine; the quality of the monofilament copper wire obtained by the cable production process is improved, the large contact area between the wire cores can be ensured as far as possible, the electric conductivity of the cable can be improved, the smoothness and the precision of the outside of the cable are ensured, and the service life of the cable is prolonged.
Description
Technical Field
The invention relates to the field of cable production, in particular to a cable production process.
Background
Cable is a generic term for optical cables, electrical cables, and the like. The cable has many uses, and is mainly used for controlling installation, connecting equipment, transmitting power and the like. Of which copper core cables are most widely used.
Referring to the existing Chinese patent with publication number CN104319019A, the production process of the cable is disclosed, which comprises the following steps: selecting a tinned copper wire with the diameter of 0.1-0.6mm as a wire core; stranding a plurality of tinned copper wires by a wire bundling machine; insulating materials are used for carrying out vacuum isolation and wrapping on the conductor through a plastic extruding machine, and after the core wire is finished, steam is used for steaming, wherein the steaming time is 4-5 hours; stranding a plurality of core wires into a cable as required; covering a layer of aluminum foil outside the core wire by using a wrapping machine; weaving a layer of aluminum-magnesium alloy wires outside the aluminum foil by using a weaving machine; the outside of the braided layer is covered with a layer of polyester tape; and finally, directly coating a plastic protective layer on the outermost surface of the core wire by using an extruding machine.
The production process of the cable has the advantage of improving the production efficiency. However, the above-mentioned production process of such cables still has some disadvantages, such as: firstly, a manufacturing process of a copper wire is not provided, a drawing mode is mostly adopted for manufacturing and producing a common copper wire, and the purpose of low-temperature tempering is achieved only by means of heat generated by the common copper wire during drawing, so that grains in a certain area in the copper wire are large, stress concentration exists, and the conductive performance of a cable is influenced; secondly, the twisting process of the lead does not control the lead, and large gaps are easy to exist among the wire cores, so that the conductivity of the twisted lead is influenced; and thirdly, only one layer of sheath is produced, so that the abrasion resistance and the corrosion resistance of the cable are poor.
Disclosure of Invention
In view of the problems mentioned in the background, it is an object of the present invention to provide a cable production process to solve the problems mentioned in the background.
The technical purpose of the invention is realized by the following technical scheme:
a cable production process specifically comprises the following steps:
s1, drawing the monofilament: at normal temperature, the copper rod passes through one or more die holes of a drawing die by a wire drawing machine;
s2, annealing the monofilaments: continuously annealing the copper wire obtained by drawing the single wire in the S1 through a heat treatment box, wherein two annealing areas are arranged in the heat treatment box, the temperature of the single-wire copper wire in the first annealing area is heated to 240-260 ℃, and the atmosphere in the first annealing area is not controlled; heating the monofilament copper wire to 550-600 ℃ in the second annealing area, and controlling the oxygen content in the air in the second annealing area to be lower than 1%;
s3, stranding of wires: stranding a plurality of copper wires obtained by annealing the S2 monofilaments into a wire core, and twisting the wire core while adopting a compression mode to change a single copper wire with a common circular section into a semicircle, a fan shape, a tile shape or a compressed circle;
s4, insulating extrusion: extruding a solid insulating layer outside the stranded conductor core obtained in the step S3, and controlling the eccentricity of the insulating layer to be not more than 5%, wherein the eccentricity is 100% (the maximum value of the thickness of the insulating layer-the minimum value of the thickness of the insulating layer)/(the maximum value of the thickness of the insulating layer + the minimum value of the thickness of the insulating layer); controlling an arithmetic mean deviation Ra <0.2 of an outer profile of the insulating layer;
s5, cabling: filling an insulating material between the outside of the stranded conductor core and the insulating layer, and stranding the cable obtained in the S4 into a round shape in a non-back twist mode;
s6, extruding and wrapping an inner sheath: an inner sheath is extruded between the insulating layer and the insulating material and comprises an inner protective layer of an isolating sleeve and a wrapping inner protective layer;
s7, extruding an outer sheath: and directly extruding the plastic outer sheath by using an extruding machine.
By adopting the technical scheme, the cable production process provides a drawing process of a monofilament copper wire, after a copper rod is drawn into the monofilament copper wire through a wire drawing machine and a plurality of dies, the monofilament copper wire is subjected to heat treatment, and heat treatment parameters are controlled, wherein the temperature of the monofilament copper wire in a first annealing area rises relatively slowly, the oxidation problem is not obvious, the atmosphere can not be controlled, the crystal grains of the copper wire in the first annealing area become thin, the crystal grains in a second annealing area become thin further, the strength and the toughness of the copper wire can be improved, and the oxidation of the monofilament copper wire can be reduced by controlling the atmosphere in the second annealing area, so that the quality of the obtained monofilament copper wire is improved; in addition, when the wire is twisted, the wire core is tightly pressed and controlled, so that the cross section of the wire core can be changed into a semicircle, a sector, a tile shape or a tightly pressed circle, the wire cores can be ensured to have a large contact area as much as possible, and the electric conductivity of the cable can be improved; moreover, the cable production process adopts multiple steps of insulating extrusion, cabling, extrusion inner sheath, extrusion outer sheath and the like, so that the cable forms a multilayer protective layer structure outside the twisted wire harness, the smoothness and the precision of the outside of the cable are ensured, and the service life of the cable is prolonged.
Preferably, the copper wire drawn by the monofilament is subjected to tin plating treatment between the annealing of the S2 monofilament and the stranding of the S3 lead, and the thickness of a tin layer on the surface of the copper wire is 0.8-1.1 um.
By adopting the technical scheme, the tinned copper wire is softer in material and good in conductivity, and compared with a bare copper wire, the tinned copper wire is stronger in corrosion resistance and oxidation resistance, and the service life of a weak current cable can be greatly prolonged.
Preferably, before tinning treatment of a copper wire drawn by a monofilament, pickling the copper wire, wherein the prepared pickling solution is prepared by mixing the following components in percentage by mass: 2: 0.5 acid-washing polishing solution MS0312, water, 95% sulfuric acid.
By adopting the technical scheme, the pickling solution can remove oxide scales on the surfaces of the tinned copper wires, and the pickling solution with the component ratio has small pollution on one hand and has a good effect of removing the oxide scales on the other hand.
Preferably, the weaving operation is performed during the cabling of S5, and a tubular mesh is woven by warp and weft of teflon thread outside the twisted wire core during weaving.
By adopting the technical scheme, the tubular woven net is woven by the polytetrafluoroethylene threads in the warp and weft mode outside the twisted wire core, so that the binding degree of the wire core can be improved, and the strength and the toughness of the cable can be improved.
Preferably, the S5 filled insulating material is one or more of PP cotton, quartz, asbestos, mica, glass, ceramic and tetrafluoroethylene plastic.
By adopting the technical scheme, the insulating materials are common insulating materials respectively, but are cheap and easy to process.
Preferably, the insulating material comprises the following components in percentage by mass: a mixture of 10% PP cotton, 20% quartz, 10% asbestos, 20% mica, 10% glass, 10% ceramic, 20% tetrafluoroethylene plastic.
By adopting the technical scheme, the insulating material prepared according to the proportion has the advantages of strong adhesive force after molding, easy caking and easy molding.
Preferably, the S2 is to heat the monofilament copper wire to 560 ℃ and 580 ℃ in the second annealing region during the monofilament annealing, and the oxygen content in the air in the second annealing region is controlled to be 0.2-0.6%.
By adopting the technical scheme, the monofilament copper wire with the best quality can be obtained in the temperature range and the oxygen content in the second annealing area.
Preferably, the inner jacket of the isolation sleeve in the S6 extruded inner jacket is made of polytetrafluoroethylene, and the wrapped inner jacket is made of polyethylene.
Through adopting above-mentioned technical scheme, the protective layer adopts the polytetrafluoroethylene material in the isolation sleeve, when adopting the polyethylene material around covering the inner sheath, can both have good extrusion performance.
Preferably, after the S7 extrusion coating of the outer sheath, the cable is subjected to an insulation resistance test, a finished product voltage test, a tensile strength test, an elongation at break test and a bending test.
By adopting the technical scheme, the quality of the cable can be ensured by performing an insulation resistance test, a finished product voltage test, a tensile strength test, a breaking elongation test and a bending test on the cable.
In summary, the invention mainly has the following beneficial effects:
firstly, the cable production process provides a drawing process of a monofilament copper wire, after a copper rod is drawn into the monofilament copper wire through a wire drawing machine and a plurality of dies, the monofilament copper wire is subjected to heat treatment, and heat treatment parameters are controlled, wherein the temperature of the monofilament copper wire in a first annealing area rises relatively slowly, the problem of oxidation is not outstanding, the atmosphere can not be controlled, crystal grains of the copper wire in the first annealing area become thin, then the crystal grains in a second annealing area become thin further, the strength and the toughness of the copper wire can be improved, and the oxidation of the monofilament copper wire can be reduced by controlling the atmosphere in the second annealing area, so that the quality of the obtained monofilament copper wire is improved;
secondly, when the conducting wires are twisted, the production process of the cable adopts the compression control on the conducting wire cores, so that the cross sections of the conducting wire cores can be changed into semi-circles, sectors, tiles or compressed circles, the large contact area among the conducting wire cores can be ensured as much as possible, and the electric conductivity of the cable can be improved;
and thirdly, the cable production process adopts multiple steps of insulating extrusion, cabling, extrusion of an inner sheath, extrusion of an outer sheath and the like, so that the cable forms a multilayer protective layer structure outside the stranded wire harness, the smoothness and the precision of the outside of the cable are ensured, and the service life of the cable is prolonged.
Drawings
Fig. 1 is a process flow diagram for cable production.
Detailed Description
The technical solutions in the embodiments of the present invention will be clearly and completely described below with reference to the drawings in the embodiments of the present invention, and it is obvious that the described embodiments are only a part of the embodiments of the present invention, and not all of the embodiments. All other embodiments, which can be derived by a person skilled in the art from the embodiments given herein without making any creative effort, shall fall within the protection scope of the present invention.
Example 1
Referring to fig. 1, a cable production process specifically includes the following steps:
s1, drawing the monofilament: at normal temperature, the copper rod passes through one or more die holes of a drawing die by a wire drawing machine;
s2, annealing the monofilaments: continuously annealing the copper wire obtained by drawing the single-wire in the S1 through a heat treatment box, wherein two annealing areas are arranged in the heat treatment box, the temperature of the single-wire copper wire in the first annealing area is heated to 250 ℃, and the atmosphere in the first annealing area is not controlled; heating the monofilament copper wire to 560 ℃ in the second annealing area, and controlling the oxygen content in the air in the second annealing area to be 0.8%;
s3, stranding of wires: stranding a plurality of copper wires obtained by annealing S2 monofilaments into a lead core, and twisting the lead core while adopting a compression mode to change a single copper wire with a common circular section into a semicircle;
s4, insulating extrusion: extruding a solid insulating layer outside the stranded conductor core obtained in S3, and controlling the eccentricity of the insulating layer to be 4%, wherein the eccentricity is 100% (the maximum value of the thickness of the insulating layer-the minimum value of the thickness of the insulating layer)/(the maximum value of the thickness of the insulating layer + the minimum value of the thickness of the insulating layer); controlling an arithmetic mean deviation Ra <0.2 of an outer profile of the insulating layer;
s5, cabling: filling an insulating material between the outside of the twisted wire core and the insulating layer, and twisting the cable obtained in the S4 into a round shape in a non-back twist mode;
s6, extruding and wrapping an inner sheath: an inner sheath is extruded between the insulating layer and the insulating material and comprises an inner protective layer of an isolating sleeve and a wrapping inner protective layer;
s7, extruding an outer sheath: and directly extruding the plastic outer sheath by using an extruding machine.
Referring to the drawings, the cable production process provides a drawing process of a monofilament copper wire, after a copper rod is drawn into the monofilament copper wire through a wire drawing machine and a plurality of dies, the monofilament copper wire is subjected to heat treatment, and parameters of the heat treatment are controlled, wherein the temperature of the monofilament copper wire in a first annealing area rises relatively slowly, the oxidation problem is not prominent, the atmosphere can not be controlled, crystal grains of the copper wire in the first annealing area become thin, then the crystal grains in a second annealing area become thin further, the strength and the toughness of the copper wire can be improved, and the oxidation of the monofilament copper wire can be reduced by controlling the atmosphere in the second annealing area, so that the quality of the obtained monofilament copper wire is improved; in addition, when the wire is twisted, the wire core is tightly pressed and controlled, so that the cross section of the wire core can be changed into a semicircle, a sector, a tile shape or a tightly pressed circle, the wire cores can be ensured to have a large contact area as much as possible, and the electric conductivity of the cable can be improved; moreover, the cable production process adopts multiple steps of insulating extrusion, cabling, extrusion inner sheath, extrusion outer sheath and the like, so that the cable forms a multilayer protective layer structure outside the twisted wire harness, the smoothness and the precision of the outside of the cable are ensured, and the service life of the cable is prolonged.
The method comprises the following steps of performing tin plating treatment on a copper wire drawn by a monofilament between S2 monofilament annealing and S3 wire stranding, wherein the thickness of a tin layer on the surface of the copper wire is 0.8 um; the tinned copper wire is soft in material and good in conductivity, and compared with a bare copper wire, the tinned copper wire is higher in corrosion resistance and oxidation resistance, and the service life of a weak current cable can be greatly prolonged.
Before tinning treatment is carried out on a copper wire drawn by a monofilament, pickling the copper wire, wherein the prepared pickling solution is prepared by mixing the following components in percentage by mass: 2: the mixed solution of 0.5 of acid-washing polishing solution MS0312, water, 95% sulphuric acid, the acid-washing solution can remove the oxide skin on the surface of the copper wire plated with tin, and the acid-washing solution with the component ratio has little pollution on one hand and good effect of removing the oxide skin on the other hand.
In the S5 cabling process, a weaving operation is performed, a tubular knitted net is woven by polytetrafluoroethylene threads in a warp-weft mode outside the stranded conductor core, the tubular knitted net is woven by the polytetrafluoroethylene threads in the warp-weft mode outside the stranded conductor core, the binding degree of the conductor core can be improved, and the strength and the toughness of the cable can be improved.
The insulating material filled in the S5 is a mixture of PP cotton, quartz, asbestos, mica, glass, ceramic and tetrafluoroethylene plastic, which are common insulating materials, but are cheap and easy to process.
Wherein, the insulating material is composed of the following components by mass: the insulating material prepared by the mixture of 10% of PP cotton, 20% of quartz, 10% of asbestos, 20% of mica, 10% of glass, 10% of ceramic and 20% of tetrafluoroethylene plastic has the advantages of strong adhesive force after molding, easy agglomeration and easy molding.
Wherein, the distance sleeve inner sheath is the polytetrafluoroethylene material in the crowded package inner sheath of S6, is the polyethylene material around the package inner sheath, and the protective layer adopts the polytetrafluoroethylene material in the distance sleeve, when adopting the polyethylene material around the package inner sheath, can both have good extrusion performance.
After the outer sheath is extruded in S7, the cable is subjected to an insulation resistance test, a finished product voltage test, a tensile strength test, a breaking elongation test and a bending test, and the quality of the cable can be guaranteed by performing the insulation resistance test, the finished product voltage test, the tensile strength test, the breaking elongation test and the bending test on the cable.
Example 2
The difference from example 1 is that:
in S2 monofilament annealing, copper wires obtained by drawing single filaments in S1 are continuously annealed through a heat treatment box, two annealing areas are arranged in the heat treatment box, the single-filament copper wires are heated to 240 ℃ in a first annealing area, and the atmosphere in the first annealing area is not controlled; the monofilament copper wire was heated to 550 ℃ in the second annealing zone, and the oxygen content in the air in the second annealing zone was controlled to 0.6%.
Wherein, the copper wire drawn by the monofilament is tinned between S2 monofilament annealing and S3 wire stranding, and the thickness of the tin layer on the surface of the copper wire is 0.8 um.
Example 3
The difference from example 1 is that:
in S2 monofilament annealing, copper wires obtained by drawing single filaments in S1 are continuously annealed through a heat treatment box, two annealing areas are arranged in the heat treatment box, the single-filament copper wires are heated to 260 ℃ in a first annealing area, and the atmosphere in the first annealing area is not controlled; the monofilament copper wire was heated to a temperature of 600 c in the second annealing zone, and the oxygen content in the air in the second annealing zone was controlled to 0.4%.
Wherein, the copper wire drawn by the monofilament is treated by tinning between the annealing of the S2 monofilament and the stranding of the S3 lead, and the thickness of the tin layer on the surface of the copper wire is 1.1 um.
Example 4
A cable production process specifically comprises the following steps:
s1, drawing the monofilament: at normal temperature, the copper rod passes through one or more die holes of a drawing die by a wire drawing machine;
s2, annealing the monofilaments: continuously annealing the copper wire obtained by drawing the single-wire in the S1 through a heat treatment box, wherein two annealing areas are arranged in the heat treatment box, the temperature of the single-wire copper wire in the first annealing area is heated to 250 ℃, and the atmosphere in the first annealing area is not controlled; heating the monofilament copper wire to 560 ℃ in the second annealing area, and controlling the oxygen content in the air in the second annealing area to be 0.8%;
s3, stranding of wires: stranding a plurality of copper wires obtained by annealing S2 monofilaments into a lead core, and twisting the lead core while adopting a compression mode to change a single copper wire with a common circular section into a semicircle;
s4, insulating extrusion: extruding a solid insulating layer outside the stranded conductor core obtained in S3, and controlling the eccentricity of the insulating layer to be 3%, wherein the eccentricity is 100% (the maximum value of the thickness of the insulating layer-the minimum value of the thickness of the insulating layer)/(the maximum value of the thickness of the insulating layer + the minimum value of the thickness of the insulating layer); controlling the arithmetic mean deviation Ra of the outer contour of the insulating layer to be 0.1;
s5, cabling: filling an insulating material between the outside of the twisted wire core and the insulating layer, and twisting the cable obtained in the S4 into a round shape in a non-back twist mode;
s6, extruding and wrapping an inner sheath: an inner sheath is extruded between the insulating layer and the insulating material and comprises an inner protective layer of an isolating sleeve and a wrapping inner protective layer;
s7, extruding an outer sheath: and directly extruding the plastic outer sheath by using an extruding machine.
Referring to the drawings, the cable production process provides a drawing process of a monofilament copper wire, after a copper rod is drawn into the monofilament copper wire through a wire drawing machine and a plurality of dies, the monofilament copper wire is subjected to heat treatment, and parameters of the heat treatment are controlled, wherein the temperature of the monofilament copper wire in a first annealing area rises relatively slowly, the oxidation problem is not prominent, the atmosphere can not be controlled, crystal grains of the copper wire in the first annealing area become thin, then the crystal grains in a second annealing area become thin further, the strength and the toughness of the copper wire can be improved, and the oxidation of the monofilament copper wire can be reduced by controlling the atmosphere in the second annealing area, so that the quality of the obtained monofilament copper wire is improved; in addition, when the wire is twisted, the wire core is tightly pressed and controlled, so that the cross section of the wire core can be changed into a semicircle, a sector, a tile shape or a tightly pressed circle, the wire cores can be ensured to have a large contact area as much as possible, and the electric conductivity of the cable can be improved; moreover, the cable production process adopts multiple steps of insulating extrusion, cabling, extrusion inner sheath, extrusion outer sheath and the like, so that the cable forms a multilayer protective layer structure outside the twisted wire harness, the smoothness and the precision of the outside of the cable are ensured, and the service life of the cable is prolonged.
Although embodiments of the present invention have been shown and described, it will be appreciated by those skilled in the art that changes, modifications, substitutions and alterations can be made in these embodiments without departing from the principles and spirit of the invention, the scope of which is defined in the appended claims and their equivalents.
Claims (9)
1. A cable production process is characterized in that: the method specifically comprises the following steps:
s1, drawing the monofilament: at normal temperature, the copper rod passes through one or more die holes of a drawing die by a wire drawing machine;
s2, annealing the monofilaments: continuously annealing the copper wire obtained by drawing the single wire in the S1 through a heat treatment box, wherein two annealing areas are arranged in the heat treatment box, the temperature of the single-wire copper wire in the first annealing area is heated to 240-260 ℃, and the atmosphere in the first annealing area is not controlled; heating the monofilament copper wire to 550-600 ℃ in the second annealing area, and controlling the oxygen content in the air in the second annealing area to be lower than 1%;
s3, stranding of wires: stranding a plurality of copper wires obtained by annealing the S2 monofilaments into a wire core, and twisting the wire core while adopting a compression mode to change a single copper wire with a common circular section into a semicircle, a fan shape, a tile shape or a compressed circle;
s4, insulating extrusion: extruding a solid insulating layer outside the stranded conductor core obtained in the step S3, and controlling the eccentricity of the insulating layer to be not more than 5%, wherein the eccentricity is 100% (the maximum value of the thickness of the insulating layer-the minimum value of the thickness of the insulating layer)/(the maximum value of the thickness of the insulating layer + the minimum value of the thickness of the insulating layer); controlling an arithmetic mean deviation Ra <0.2 of an outer profile of the insulating layer;
s5, cabling: filling an insulating material between the outside of the stranded conductor core and the insulating layer, and stranding the cable obtained in the S4 into a round shape in a non-back twist mode;
s6, extruding and wrapping an inner sheath: an inner sheath is extruded between the insulating layer and the insulating material and comprises an inner protective layer of an isolating sleeve and a wrapping inner protective layer;
s7, extruding an outer sheath: and directly extruding the plastic outer sheath by using an extruding machine.
2. A cable production process according to claim 1, wherein: and tinning the copper wire drawn by the monofilament between the annealing of the S2 monofilament and the stranding of the S3 conductor, wherein the thickness of a tin layer on the surface of the copper wire is 0.8-1.1 um.
3. A cable production process according to claim 2, wherein: before tinning treatment of a copper wire drawn by a monofilament, pickling the copper wire, wherein the prepared pickling solution is prepared by mixing the following components in percentage by mass: 2: 0.5 acid-washing polishing solution MS0312, water, 95% sulfuric acid.
4. A cable production process according to claim 1, wherein: and performing weaving operation during cabling of the S5, wherein a tubular woven net is woven by using polytetrafluoroethylene threads in warp and weft mode outside the stranded wire core during weaving.
5. A cable production process according to claim 1, wherein: the S5 filled insulating material is one or more of PP cotton, quartz, asbestos, mica, glass, ceramic and tetrafluoroethylene plastic.
6. A cable production process according to claim 5, wherein: the insulating material comprises the following components in percentage by mass: a mixture of 10% PP cotton, 20% quartz, 10% asbestos, 20% mica, 10% glass, 10% ceramic, 20% tetrafluoroethylene plastic.
7. A cable production process according to claim 1, wherein: and S2, heating the monofilament copper wire to 560-580 ℃ in the second annealing area during monofilament annealing, and controlling the oxygen content in the air in the second annealing area to be 0.2-0.6%.
8. A cable production process according to claim 1, wherein: and the inner jacket of the isolation sleeve in the S6 extruded inner jacket is made of polytetrafluoroethylene, and the wrapped inner jacket is made of polyethylene.
9. A cable production process according to claim 1, wherein: and after the S7 is extruded with the outer sheath, performing an insulation resistance test, a finished product voltage test, a tensile strength test, a breaking elongation test and a bending test on the cable.
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN111883322A (en) * | 2020-06-30 | 2020-11-03 | 湖南金龙电缆有限公司 | Method for manufacturing environment-friendly home decoration electric wire with characters printed on two sides |
| CN113035459A (en) * | 2021-03-09 | 2021-06-25 | 江苏中柔电缆有限公司 | Cable manufacturing process |
| CN113963848A (en) * | 2021-10-25 | 2022-01-21 | 广东远光电缆实业有限公司 | Preparation process of light high-flexibility wear-resistant cable for mobile power generation vehicle |
| CN115938686A (en) * | 2022-11-24 | 2023-04-07 | 江苏洪能电缆有限公司 | Preparation process of flame-retardant charging cable for automobile |
| CN116206823A (en) * | 2023-03-29 | 2023-06-02 | 广州市广惠通线缆有限公司 | Method and device for avoiding sprain of cable core |
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| CN111883322A (en) * | 2020-06-30 | 2020-11-03 | 湖南金龙电缆有限公司 | Method for manufacturing environment-friendly home decoration electric wire with characters printed on two sides |
| CN113035459A (en) * | 2021-03-09 | 2021-06-25 | 江苏中柔电缆有限公司 | Cable manufacturing process |
| CN113963848A (en) * | 2021-10-25 | 2022-01-21 | 广东远光电缆实业有限公司 | Preparation process of light high-flexibility wear-resistant cable for mobile power generation vehicle |
| CN115938686A (en) * | 2022-11-24 | 2023-04-07 | 江苏洪能电缆有限公司 | Preparation process of flame-retardant charging cable for automobile |
| CN115938686B (en) * | 2022-11-24 | 2023-10-24 | 江苏洪能电缆有限公司 | Preparation process of flame-retardant charging cable for automobile |
| CN116206823A (en) * | 2023-03-29 | 2023-06-02 | 广州市广惠通线缆有限公司 | Method and device for avoiding sprain of cable core |
| CN116206823B (en) * | 2023-03-29 | 2024-02-13 | 广州市广惠通线缆有限公司 | Method and device for avoiding sprain of cable core |
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Application publication date: 20200616 |