CN112071470B - Copper-clad steel tinned wire and preparation process thereof - Google Patents
Copper-clad steel tinned wire and preparation process thereof Download PDFInfo
- Publication number
- CN112071470B CN112071470B CN202010859657.9A CN202010859657A CN112071470B CN 112071470 B CN112071470 B CN 112071470B CN 202010859657 A CN202010859657 A CN 202010859657A CN 112071470 B CN112071470 B CN 112071470B
- Authority
- CN
- China
- Prior art keywords
- copper
- wire
- clad steel
- layer
- treatment
- Prior art date
- Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
- Active
Links
Classifications
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/002—Auxiliary arrangements
-
- 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
-
- H—ELECTRICITY
- H01—ELECTRIC ELEMENTS
- H01B—CABLES; CONDUCTORS; INSULATORS; SELECTION OF MATERIALS FOR THEIR CONDUCTIVE, INSULATING OR DIELECTRIC PROPERTIES
- H01B5/00—Non-insulated conductors or conductive bodies characterised by their form
- H01B5/02—Single bars, rods, wires, or strips
Abstract
The invention relates to the technical field of wires, in particular to a copper-clad steel tinned wire and a preparation process thereof, wherein the copper-clad steel tinned wire sequentially comprises a core layer, a copper layer and a tinned layer from inside to outside, and the thickness of the tinned layer is 1-3 mu m; the preparation method of the copper-clad steel tinning wire comprises the following steps: A. drawing a steel wire; B. electroplating a copper layer; C. carrying out wire drawing and annealing treatment; D. cooling and air drying; E. and (6) tinning treatment. The copper-clad steel tinned wire is novel in structure, simple in preparation process operation and easy to control, the prepared wire is high in strength, the tinned layer is stabilized on the basis of preparing the high-strength copper-clad steel wire, the protection on a copper layer is improved, the antioxidation effect of the wire is improved, the copper layer is not easy to oxidize and discolor or corrode, the service life of the wire is prolonged, and the practicability is high.
Description
Technical Field
The invention relates to the technical field of wires, in particular to a copper-clad steel tinned wire and a preparation process thereof.
Background
The surface layer of the copper-clad steel wire is copper, so that the copper-clad steel wire has better conductivity, the inner layer is high-quality carbon steel, the skin effect principle is conductive, the magnetic conductivity is excellent, and the resistance is far lower than that of conventional materials such as steel, galvanized steel and the like; therefore, the optical fiber has good signal transmission performance and excellent mechanical performance, and is widely applied to the fields of data transmission and the like.
However, the existing copper-clad steel wire is relatively weak in strength and easy to break, so that the wire is easy to damage and normal transmission is influenced; in order to solve the problem of easy fracture, a multilayer coating structure is generally adopted in the market at present, such as an insulating layer, an alloy layer, a metal layer, a fiber layer, an anti-oxidation layer, a composite material layer and the like, but excessive coating affects the flexibility of the wire rod and is not beneficial to processing and use.
Disclosure of Invention
In order to overcome the defects in the prior art, the invention aims to provide the copper-clad steel tinned wire which is novel in structure, high in wire strength, difficult to oxidize, long in service life and high in practicability.
The invention also aims to provide a preparation process of the copper-clad steel tinning wire, which is simple to operate and easy to control, stabilizes the tinning layer on the basis of preparing the high-strength copper-clad steel wire, improves the protection on the copper layer, improves the antioxidation effect of the wire, and ensures that the copper layer is not easy to oxidize, discolor or corrode.
The purpose of the invention is realized by the following technical scheme: a copper-clad steel tinned wire comprises a core layer, a copper layer and a tinned layer from inside to outside in sequence, wherein the thickness of the tinned layer is 1-3 mu m.
Preferably, the core layer comprises 95-99% low carbon steel having a carbon content of < 0.25% and 1-5% copper.
The copper-clad steel tinned wire rod of this technique novel structure is through adopting specific content's low-carbon steel and copper as the sandwich layer for wire rod intensity is higher, and the tin coating then improves the anti-oxidant, the corrosion-resistant effect of wire rod, makes the difficult oxidation of wire rod, corruption, long service life, and the practicality is high.
The other purpose of the invention is realized by the following technical scheme: a preparation process of the copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 0.5-1.5mm by drawing equipment to prepare a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.05-0.08mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
Preferably, in the step C, the temperature of the annealing treatment is 600-800 ℃, and the time of the annealing treatment is 8-20 s. By strictly controlling the annealing temperature and time, the bonding strength between the core layer and the copper layer can be improved, the strength of the wire rod is improved, the surface of the copper layer is activated, and the adhesion stability of a tin layer plated with tin on the surface subsequently is improved; if the annealing temperature is too low and the annealing time is too short, the strength of the wire rod is reduced, and the wire rod is easily broken.
Preferably, in the step D, the copper-clad steel wire is cooled to 50-60 ℃ by water cooling treatment. The copper-clad steel fine wire is cooled by water, and the cooling temperature is controlled, so that the adhesive force of the surface of a copper layer can be improved, and the phenomenon that a tin liquid is easy to evaporate instantly when the wire is contacted with the tin liquid due to high temperature, and further a tin-plated layer has holes, spots and the like is avoided; and the air drying treatment in the step D can blow dry the water on the surface of the copper layer in the water cooling process, so that the phenomenon that the tin plating layer has a cavity and the like due to the adhesion of the water on the surface in the subsequent tin plating process is avoided.
Preferably, in the step E, the temperature of the tin liquid is 260-270 ℃, and the tin liquid is in a micro-boiling state. The tin coating can be stably attached to the surface of the copper layer, the copper layer is protected, oxidation is not easy to occur, and the service life of the wire rod is prolonged.
The preparation process of the copper-clad steel tinning wire rod is simple to operate and easy to control, and the tinning treatment is basically carried out on the wire rod with the thickness of more than 0.08mm in the prior art, so that the wire rod is difficult to be drawn to the fineness of 0.05-0.08mm, and the tinning treatment of the wire rod with the thickness of 0.05-0.08mm is difficult to be carried out. The technology realizes wire drawing to a copper-clad steel fine wire with the diameter of 0.05-0.08mm, then improves the strength and the activity of the wire through annealing treatment, so that the wire is not easy to break, the adhesiveness of subsequent tinning is improved, the protection to a copper layer is improved, the antioxidation of the wire is improved, and the copper layer is not easy to oxidize and discolor or be corroded.
Preferably, in the step E, the tin liquid includes the following raw materials by mass percent:
the balance being metallic Sn.
Preferably, the coupling agent is gamma-mercaptopropyltrimethoxysilane, and the additive comprises 1-3% of surfactant and 0.5-1.5% of antioxidant.
The technology can improve the dispersibility of metal Ag and metal Cu in metal Sn by adopting the nano titanium dioxide, and improve the stability among metal phases; the adopted coupling agent improves the adhesive force and the binding degree of the tin liquid and the surface of the copper layer, and simultaneously, the coupling agent and the nano titanium dioxide form a nano titanium compound composite organosilane conversion coating at high temperature, so that the surface appearance of the tin-plated layer becomes compact and smooth, and the oxidation resistance and the corrosion resistance are improved.
Wherein, the adopted surfactant improves the material dispersibility in the tin liquid, so that the tin liquid is uniformly adhered to the surface of the copper layer; the antioxidant improves the antioxidation of the tin liquid, improves the antioxidation protection effect on the copper layer and prolongs the service life of the wire rod.
Preferably, the surfactant is at least one of polyoxypropylene ether, methyl polyoxypropylene ether, polyoxyethylene alkylamine and polyoxyethylene sorbitol ester; the antioxidant is hydroquinone and/or ascorbic acid.
The surface active agent of the technology reduces the surface tension, so that the tin liquid can wet the surface of the wire rod more easily, thereby enabling the appearance of the tin coating to be uniform, compact and bright without the defects of peeling, bubbling, spots and the like,
the antioxidant of the technology adopts ascorbic acid, has reducibility, and has synergistic effect with hydroquinone, so that on one hand, the antioxidant property of the tin liquid can be improved, and on the other hand, the tin liquid and bivalent tin and tetravalent tin which are formed in a tin plating layer and are possibly oxidized can be reduced, the stability of the tin plating layer is improved, and the protective effect on a copper layer is improved. More preferably, the antioxidant is a mixture of hydroquinone and ascorbic acid in a weight ratio of 1: 1.
Preferably, the preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to the temperature of 1000-1200 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, uniformly stirring, keeping the temperature for 1-2h, and cooling to the temperature of 280-300 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 260 ℃ and 270 ℃ to prepare the tin liquid.
In the preparation step of this technique tin liquor, through adding metal Ag, metal Cu, nanometer titanium dioxide to the metal Sn of high temperature, provide metal Ag under the effect of nanometer titanium dioxide, the dispersibility of metal Cu in metal Sn, improve combination and stability between the metal phase, and through heat preservation treatment, improve the combination between the metal phase, improve the compactness of tin coating, if the temperature is not enough or the heat preservation time is not enough, then can make tin coating surface appear slight shrinkage cavity crack, reduce the oxidation-resistant corrosion-resistant guard action to the copper layer, reduce the life of product.
And adding a coupling agent and an additive in the step B, reducing the surface tension of the tin liquid, enabling the tin liquid to be easy to wet and attach to the surface of the copper layer, and enabling the coupling agent to act with the nano titanium dioxide, so that a nano titanium compound composite organic silane conversion coating is formed in the cooling process after the tin liquid is attached to the copper layer, the surface appearance of the tin-plated layer becomes compact and smooth, and the oxidation resistance and the corrosion resistance are improved.
The invention has the beneficial effects that: the copper-clad steel tinned wire is novel in structure, high in wire strength, not easy to oxidize, long in service life and high in practicability.
The preparation process of the copper-clad steel tinned wire rod is simple to operate and easy to control, the tinned layer is stabilized on the basis of preparing the high-strength copper-clad steel wire rod, the protection on the copper layer is improved, the antioxidation effect of the wire rod is improved, and the copper layer is not easy to oxidize, discolor or corrode.
Detailed Description
The present invention will be further described with reference to the following examples for facilitating understanding of those skilled in the art, and the description of the embodiments is not intended to limit the present invention.
Example 1
A copper-clad steel tinned wire comprises a core layer, a copper layer and a tinned layer from inside to outside in sequence, wherein the thickness of the tinned layer is 1 mu m.
The core layer comprises 95% of low carbon steel and 5% of copper, and the carbon content of the low carbon steel is less than 0.25%.
A preparation process of the copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 0.5mm by drawing equipment to obtain a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.05mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
In the step C, the temperature of the annealing treatment is 600 ℃, and the time of the annealing treatment is 20 s.
And D, cooling the copper-clad steel wire to 50 ℃ by water cooling treatment.
In the step E, the temperature of the tin liquid is 260 ℃.
In the step E, the tin liquid comprises the following raw materials in percentage by mass:
the balance being metallic Sn.
The coupling agent is gamma-mercaptopropyl-trimethoxysilane, and the additive comprises 1% of surfactant and 0.5% of antioxidant.
The surfactant is polyoxypropylene ether; the antioxidant is hydroquinone.
The preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to 1000 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, uniformly stirring, keeping the temperature for 1h, and cooling to 280 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 260 ℃ to prepare the tin liquid.
Example 2
A copper-clad steel tinned wire comprises a core layer, a copper layer and a tinned layer from inside to outside in sequence, wherein the thickness of the tinned layer is 1.5 mu m.
The core layer comprises 96% of low carbon steel and 4% of copper, and the carbon content of the low carbon steel is less than 0.25%.
A preparation process of the copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 0.8mm by drawing equipment to obtain a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.06mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
In the step C, the annealing temperature is 650 ℃, and the annealing time is 16 s.
And D, cooling the copper-clad steel wire to 52 ℃ by water cooling treatment.
In the step E, the temperature of the tin liquid is 262 ℃.
In the step E, the tin liquid comprises the following raw materials in percentage by mass:
the balance being metallic Sn.
The coupling agent is gamma-mercaptopropyl-trimethoxysilane, and the additive comprises 1.5% of surfactant and 0.5% of antioxidant.
The surfactant is methyl polyoxypropylene ether; the antioxidant is ascorbic acid.
The preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to 1050 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, uniformly stirring, keeping the temperature for 1h, and cooling to 285 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 262 ℃ to prepare the tin liquid.
Example 3
A copper-clad steel tinned wire comprises a core layer, a copper layer and a tinned layer from inside to outside in sequence, wherein the thickness of the tinned layer is 2 microns.
The core layer comprises 97% of low carbon steel and 3% of copper, and the carbon content of the low carbon steel is less than 0.25%.
A preparation process of the copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 1.0mm by drawing equipment to obtain a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.06mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
In the step C, the temperature of the annealing treatment is 700 ℃, and the time of the annealing treatment is 12 s.
And D, cooling the copper-clad steel wire to 55 ℃ by water cooling treatment.
In the step E, the temperature of the tin liquid is 265 ℃.
In the step E, the tin liquid comprises the following raw materials in percentage by mass:
the balance being metallic Sn.
The coupling agent is gamma-mercaptopropyl-trimethoxysilane, and the additive comprises 1.5% of surfactant and 1.0% of antioxidant.
The surfactant is polyoxyethylene alkylamine; the antioxidant is a mixture of hydroquinone and ascorbic acid in a weight ratio of 1: 1.
The preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to 1100 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, uniformly stirring, keeping the temperature for 1.5h, and cooling to 290 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 265 ℃ to prepare the tin liquid.
Example 4
A copper-clad steel tinned wire comprises a core layer, a copper layer and a tinned layer from inside to outside in sequence, wherein the thickness of the tinned layer is 2.5 microns.
The core layer comprises 98% of low carbon steel and 2% of copper, and the carbon content of the low carbon steel is less than 0.25%.
A preparation process of the copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 1.3mm by drawing equipment to obtain a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.07mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
In the step C, the annealing temperature is 750 ℃, and the annealing time is 10 s.
And D, cooling the copper-clad steel wire to 58 ℃ by water cooling treatment.
In the step E, the temperature of the tin liquid is 268 ℃.
In the step E, the tin liquid comprises the following raw materials in percentage by mass:
the balance being metallic Sn.
The coupling agent is gamma-mercaptopropyl-trimethoxysilane, and the additive comprises 2.5% of surfactant and 1.0% of antioxidant.
The surfactant is polyoxyethylene sorbitol ester; the antioxidant is hydroquinone.
The preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to 1150 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, stirring uniformly, keeping the temperature for 2 hours, and cooling to 295 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 268 ℃ to prepare the tin liquid.
Example 5
A copper-clad steel tinned wire comprises a core layer, a copper layer and a tinned layer from inside to outside in sequence, wherein the thickness of the tinned layer is 3 microns.
The core layer comprises 99% of low-carbon steel and 1% of copper, and the carbon content of the low-carbon steel is less than 0.25%.
A preparation process of the copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 1.5mm by drawing equipment to obtain a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.08mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
In the step C, the annealing temperature is 800 ℃, and the annealing time is 8.
And D, cooling the copper-clad steel wire to 60 ℃ by water cooling treatment.
In the step E, the temperature of the tin liquid is 270 ℃.
In the step E, the tin liquid comprises the following raw materials in percentage by mass:
the balance being metallic Sn.
The coupling agent is gamma-mercaptopropyl-trimethoxysilane, and the additive comprises 3% of surfactant and 1.5% of antioxidant.
The surfactant is polyoxyethylene polyoxypropylene ether; the antioxidant is ascorbic acid.
The preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to 1200 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, uniformly stirring, keeping the temperature for 2 hours, and cooling to 300 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 270 ℃ to prepare the tin liquid.
Comparative example 1
This comparative example differs from example 3 above in that:
a preparation process of a copper-clad steel tinned wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 0.5-1.5mm by drawing equipment to prepare a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and hot water soaking treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.05-0.08mm through drawing equipment, and then performing hot water soaking treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the surface air drying treatment in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging.
Comparative example 2
This comparative example differs from example 3 above in that:
in the step C, the annealing temperature is 550 ℃, and the annealing time is 12 s.
Comparative example 3
This comparative example differs from example 3 above in that:
in the step C, the annealing temperature is 750 ℃, and the annealing time is 12 s.
Comparative example 4
This comparative example differs from example 3 above in that:
in the step E, the tin liquid comprises the following raw materials in percentage by mass:
the balance being metallic Sn.
Comparative example 5
This comparative example differs from example 3 above in that:
the coupling agent is bis [ gamma- (triethoxysilyl) propyl ] -tetrasulfide.
Comparative example 6
This comparative example differs from example 3 above in that:
the coupling agent is 3-methacryloxypropyltrimethoxysilane.
The copper-clad steel tinned wire prepared in the example 3 and the comparative examples 1 to 5 is subjected to tensile strength, resistivity, elongation, oxidation resistance tests and corrosion resistance tests, and the test results are as follows:
wherein the tensile strength test is carried out according to the standard GB/T4909.2-2009 dimensional measurement; the resistivity and the elongation are tested according to the standard GB 4910-85 tinned round copper wire.
The oxidation resistance test and the corrosion resistance test are shown by an adhesion test, the adhesion test is carried out according to the standard GB/T4909.11-2009 plating adhesion test, the adhesion test is carried out by adopting a sodium polysulfide solution, and the wire rod is placed in the sodium polysulfide solution to be soaked for 30 s. The higher the adhesive force performance is, the better the oxidation resistance and corrosion resistance of the wire rod are.
The data comparison shows that the copper-clad steel tinned wire prepared by the technology has higher mechanical strength, and the tin liquid plated to the surface of the copper layer by the technology has good adhesive force, so that the oxidation resistance and the corrosion resistance of the wire are improved.
In the comparative example 1, the copper-clad steel wire is subjected to hot water soaking treatment after being subjected to wire drawing, and high-temperature annealing treatment is not performed, so that the tensile strength and the elongation of the prepared copper-clad steel tinning wire are remarkably reduced, the resistivity is also remarkably increased, and cracks are easily generated on the surface; the annealing temperature of the comparative example 2 is 550 ℃, which is lower than that of the example 3, the annealing temperature of the comparative example 3 is 750 ℃, which is higher than that of the example 3, and the tensile strength and the elongation of the comparative example 2 and the comparative example 3 are also obviously reduced; further, the technology adopts annealing treatment and strictly controls the annealing temperature, so that the bonding strength between the core layer and the copper layer can be improved, the strength of the wire rod is improved, the surface of the copper layer is activated, and the adhesion stability of a tin layer plated with tin on the surface subsequently is improved.
In the comparative example 4, the tin liquor adopts carbon nanosol to replace nano titanium dioxide, so that black spots appear on the surface of the prepared copper-clad steel tinned wire, light microcracks exist, and the tensile strength and the elongation rate also have the tendency of reduction; the coupling agent in the comparative example 5 adopts other kinds of coupling agents containing sulfur groups, the silane coupling agent in the comparative example 6 adopts other silane coupling agents, the surfaces of the tinned wires of the copper-clad steel prepared in the comparative examples 5 and 6 are slightly cracked, and the tensile strength and the elongation are also reduced; the technology adopts the nano titanium dioxide to improve the dispersibility of metal Ag and metal Cu in metal Sn and the stability between metal phases, so that the strength of the prepared wire rod product is stable, the adopted coupling agent improves the adhesive force and the bonding degree of tin liquid and the surface of a copper layer, and meanwhile, a specific coupling agent (gamma-mercaptopropyl trimethoxy silane) and the nano titanium dioxide form a nano titanium compound composite organic silane conversion film at high temperature, so that the surface appearance of a tin coating becomes compact and smooth, the oxidation resistance and the corrosion resistance are improved, and black spots and cracks are not easy to appear on the surface of the wire rod.
The above-described embodiments are preferred implementations of the present invention, and the present invention may be implemented in other ways without departing from the spirit of the present invention.
Claims (7)
1. A copper-clad steel tinned wire is characterized in that: the copper-clad steel tinning wire comprises a core layer, a copper layer and a tinning layer from inside to outside in sequence, wherein the thickness of the tinning layer is 1-3 mu m;
the core layer comprises 95-99% of low-carbon steel and 1-5% of copper, and the carbon content of the low-carbon steel is less than 0.25%;
the preparation method of the copper-clad steel tinning wire comprises the following steps:
A. drawing a steel wire: drawing the steel wire to a steel wire with the diameter of 0.5-1.5mm by drawing equipment to prepare a core layer;
B. electroplating a copper layer: b, cleaning the surface of the core layer prepared in the step A, removing stains, then electroplating copper on the surface of the core layer, and drying to prepare the copper-clad steel wire coated with the copper layer;
C. wire drawing and annealing treatment: drawing the copper-clad steel wire rod prepared in the step B to a copper-clad steel fine wire with the diameter of 0.05-0.08mm through drawing equipment, and then carrying out annealing treatment;
D. cooling and air drying treatment: c, carrying out water cooling treatment and surface air drying treatment on the copper-clad steel fine wire subjected to annealing treatment in the step C in sequence;
E. tin plating treatment: d, carrying out tinning treatment on the copper-clad steel fine wire subjected to the air drying treatment on the surface in the step D through tin liquid melted by electric heating, cooling to obtain a copper-clad steel tinning wire, and winding and packaging;
in the step E, the tin liquid comprises the following raw materials in percentage by mass:
2. the copper-clad steel tinned wire according to claim 1, characterized in that: in the step C, the temperature of the annealing treatment is 600-800 ℃, and the time of the annealing treatment is 8-20 s.
3. The copper-clad steel tinned wire according to claim 1, characterized in that: and D, cooling the copper-clad steel wire to 50-60 ℃ by water cooling treatment.
4. The copper-clad steel tinned wire according to claim 1, characterized in that: in the step E, the temperature of the tin liquid is 260-270 ℃.
5. The copper-clad steel tinned wire according to claim 1, characterized in that: the coupling agent is gamma-mercaptopropyl-trimethoxysilane, and the additive comprises 1-3% of surfactant and 0.5-1.5% of antioxidant.
6. The copper-clad steel tinned wire according to claim 5, characterized in that: the surfactant is at least one of polyoxypropylene ether, methyl polyoxypropylene ether, polyoxyethylene alkylamine and polyoxyethylene sorbitol ester; the antioxidant is hydroquinone and/or ascorbic acid.
7. The copper-clad steel tinned wire according to claim 1, characterized in that: the preparation of the tin liquid comprises the following steps:
s1, heating the metal Sn to the temperature of 1000-1200 ℃, adding the metal Ag, the metal Cu and the nano titanium dioxide, uniformly stirring, keeping the temperature for 1-2h, and cooling to the temperature of 280-300 ℃ to obtain a mixture;
s2, adding the coupling agent and the additive into the mixture prepared in the step S1, stirring uniformly, and cooling to 260 ℃ and 270 ℃ to prepare the tin liquid.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010859657.9A CN112071470B (en) | 2020-08-24 | 2020-08-24 | Copper-clad steel tinned wire and preparation process thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202010859657.9A CN112071470B (en) | 2020-08-24 | 2020-08-24 | Copper-clad steel tinned wire and preparation process thereof |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN112071470A CN112071470A (en) | 2020-12-11 |
| CN112071470B true CN112071470B (en) | 2022-03-25 |
Family
ID=73659963
Family Applications (1)
| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN202010859657.9A Active CN112071470B (en) | 2020-08-24 | 2020-08-24 | Copper-clad steel tinned wire and preparation process thereof |
Country Status (1)
| Country | Link |
|---|---|
| CN (1) | CN112071470B (en) |
Families Citing this family (2)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113013271A (en) * | 2021-02-26 | 2021-06-22 | 安徽宝德光伏科技有限公司 | Composite photovoltaic solder strip and preparation process thereof |
| CN117831837A (en) * | 2024-03-01 | 2024-04-05 | 云南百冠电线电缆有限公司 | Anti-creeping separable double-layer insulated wire with tin-plated copper conductor and processing technology |
Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001098396A (en) * | 1999-09-24 | 2001-04-10 | Ishihara Chem Co Ltd | Tin or tin alloy-plated surface coating material and electronic parts utilizing the coating material |
| CN101824633A (en) * | 2010-06-02 | 2010-09-08 | 南通弘扬金属制品有限公司 | Production method of tin-bismuth alloy coated copper clad steel wire |
| CN104332216A (en) * | 2014-11-17 | 2015-02-04 | 苏州科茂电子材料科技有限公司 | Alloy copper covered steel square line |
| CN106221567A (en) * | 2016-08-31 | 2016-12-14 | 黄惠娟 | A kind of non-viscous paint of antioxygenic property |
| CN110158122A (en) * | 2019-05-19 | 2019-08-23 | 南通弘扬金属制品有限公司 | High temperature resistant high conductivity CP wire production method |
-
2020
- 2020-08-24 CN CN202010859657.9A patent/CN112071470B/en active Active
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| JP2001098396A (en) * | 1999-09-24 | 2001-04-10 | Ishihara Chem Co Ltd | Tin or tin alloy-plated surface coating material and electronic parts utilizing the coating material |
| CN101824633A (en) * | 2010-06-02 | 2010-09-08 | 南通弘扬金属制品有限公司 | Production method of tin-bismuth alloy coated copper clad steel wire |
| CN104332216A (en) * | 2014-11-17 | 2015-02-04 | 苏州科茂电子材料科技有限公司 | Alloy copper covered steel square line |
| CN106221567A (en) * | 2016-08-31 | 2016-12-14 | 黄惠娟 | A kind of non-viscous paint of antioxygenic property |
| CN110158122A (en) * | 2019-05-19 | 2019-08-23 | 南通弘扬金属制品有限公司 | High temperature resistant high conductivity CP wire production method |
Also Published As
| Publication number | Publication date |
|---|---|
| CN112071470A (en) | 2020-12-11 |
Similar Documents
| Publication | Publication Date | Title |
|---|---|---|
| CN112071470B (en) | Copper-clad steel tinned wire and preparation process thereof | |
| JP4986499B2 (en) | Method for producing Cu-Ni-Si alloy tin plating strip | |
| JP5393739B2 (en) | Cu-Ni-Si alloy tin plating strip | |
| JP2010084228A (en) | Lead frame material and semiconductor device using the same | |
| CN108962860A (en) | A kind of preparation method of resistance to oxidation bonding brass wire material | |
| JP2006118054A (en) | Electroconductive material for connecting terminal and method for producing the same | |
| JP2005105307A (en) | REFLOW-Sn-PLATED MEMBER, METHOD FOR MANUFACTURING THE MEMBER, AND COMPONENT FOR ELECTRICAL AND ELECTRONIC EQUIPMENT USING THE MEMBER | |
| JP5027013B2 (en) | Plated square wire material for connectors | |
| JP3303594B2 (en) | Heat-resistant silver-coated composite and method for producing the same | |
| JP2006283149A (en) | Surface treatment method for copper or copper alloy, surface-treated material, and electronic component using the same | |
| CN114507887A (en) | Composite coating and preparation method thereof | |
| JP4538424B2 (en) | Cu-Zn-Sn alloy tin-plated strip | |
| CN113089349A (en) | Production process of copper-plated steel strand | |
| JP3378717B2 (en) | Method for manufacturing reflow plated member | |
| KR101175092B1 (en) | Cu ALLOY Sn-PLATED STRIP HAVING EXCELLENT SOLDER WETTABILITY AND INSERTABILITY/EXTRABILITY | |
| JPS61256579A (en) | Connector | |
| JP5002767B2 (en) | Copper alloy sheet and manufacturing method thereof | |
| JPS6047344B2 (en) | Hot-dipped ultrafine copper alloy conductor | |
| JPS59180908A (en) | Silver-coated conductor and method of producing same | |
| JPS63109132A (en) | High-strength conductive copper alloy and its production | |
| JPH03188253A (en) | Tinned copper alloy material | |
| JPH02204919A (en) | Conductor for coil | |
| JPH02197013A (en) | Cable conductor with high bending strength | |
| JPS6233317B2 (en) | ||
| JPS62199795A (en) | Parts for electronic and electrical appliances |
Legal Events
| Date | Code | Title | Description |
|---|---|---|---|
| PB01 | Publication | ||
| PB01 | Publication | ||
| SE01 | Entry into force of request for substantive examination | ||
| SE01 | Entry into force of request for substantive examination | ||
| GR01 | Patent grant | ||
| GR01 | Patent grant | ||
| TR01 | Transfer of patent right |
Effective date of registration: 20230924 Address after: 437000 No. 3, 6th Lane, Yuli Avenue, Junshui Town, Tongcheng County, Xianning City, Hubei Province (self declared) Patentee after: Hubei Kaixing Cable Technology Co.,Ltd. Address before: 523000 Room 101, building 3, No.1, Cunsheng Road, Shatian Town, Dongguan City, Guangdong Province Patentee before: Dongguan Kaixing metal materials Co.,Ltd. |
|
| TR01 | Transfer of patent right |