CN103215622B - A kind of method of electric wire copper conductor eleetrotinplate - Google Patents
A kind of method of electric wire copper conductor eleetrotinplate Download PDFInfo
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- CN103215622B CN103215622B CN201210209319.6A CN201210209319A CN103215622B CN 103215622 B CN103215622 B CN 103215622B CN 201210209319 A CN201210209319 A CN 201210209319A CN 103215622 B CN103215622 B CN 103215622B
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Abstract
The invention discloses a kind of method of electric wire copper conductor eleetrotinplate, it obtains the operation of finished product after comprising pre-treatment, plating, recovery, cleaning, drying.This technology utilization method of electric tinning, is down to less than 1/5th than hot melt tin plating technique energy consumption under equal workload condition, material tin utilization ratio more than 95%, operative employee is without the need to wearing mould, and at room temperature produce, all can start or stop production any time, the labour intensity of workman obviously reduces.
Description
Technical field
The present invention relates to electroplating technology field, metallic surface, particularly the tin plating method of electric wire conductive copper wire.
Background technology
In electric wire manufacturing, the most frequently used plating wire is tinned wird, and the quality of its conductor material accounts for the dominant position of electric wire quality.Therefore, the sulfuration problems such as the rubber that can effectively prevent the oxidation of copper cash and copper cash and rubber contacts from causing after copper wire tin-plating is clamminess, copper cash blackening, improve the weldability of cable work-ing life and core simultaneously.Eleetrotinplate technique has that equipment investment is low, working efficiency is high, simple operation and other advantages, is widely used in wires and cables industry.
At present, the mode of production of China's line cable industry tinned wird mainly contains hot tinning and eleetrotinplate two kinds.Zinc-plated general on market all adopts hot melt plating, and it comprises the following steps: and leaching soldering flux-60-80 DEG C of drying-250 DEG C of hot melts are zinc-plated-and mould wears mould-air-cooled-constant speed-finished product.Tin need be heated to more than fusing point (223 ~ 250 DEG C) by this kind of hot melt depositing process, this method power consumption serious (30 ~ 40kW), material tin utilization ratio is low, about about 85%, labor strength is large, mould (tin except unnecessary) of wearing in production process needs at the temperature operation of about 250 DEG C, soldering flux decomposition gas contaminate environment, and the possibility having that the tiny tin sweat(ing) of splashing is scalded at any time.
It is as follows that Fan Defa discloses electroplating technology flow process in " eleetrotinplate technique produces the analysis of causes and the solution of dew copper " (" electric wire " the 5th phase 45-46 page in 2004) paper: unwrapping wire (bare copper wire)-alkali cleaning (oil removing)-clear water flushing-pickling (copper removal oxide film)-plating-clear water rinses--dry up-take-up-wire drawing, annealing-take-up (finished product).And the relation between working current density (I) and tin thickness, production rate can be derived according to Faraday's law of electrolysis and Coulomb's law: I=0.62 × d × V × δ (A), in formula, d is copper cash linear diameter (mm); V is the speed (m/min) of production line; δ is tin thickness (μm).
Chinese patent application CN1133903A discloses a kind of process for plating copper wire with tin, it comprises copper cash treatment before plating, copper cash plating and copper cash plating posttreatment three process, it is characterized in that electroplate liquid has stannous fluoboric acid, fluoroboric acid sub-lead, fluoroboric acid, boric acid, pyrocatechol, multibrightener and water are formed, it is consistent that the tinned wird of producing has uniform color, bright and clean, without dew copper, corrosion phenomena, heat 200 DEG C and reach 5 minutes and do not fade.The fluorochemical related in this technique, easily decomposes and generate toxic substance, and operation is comparatively loaded down with trivial details, is not suitable for scale operation.
Therefore, need that a kind of energy consumption is low, operational safety is simple, environmental pollution is little and the copper wire tin-plating method that throughput is large, while raising tin raw material utilization ratio, produce the tin-coated copper wire of high-quality.
Summary of the invention
The object of the present invention is to provide a kind of tin plating method of electric wire conductive copper wire, can aforementioned drawback be overcome, meet the needs of safety in production, high-efficiency high-quality.
To achieve these goals, the present invention adopts following technical scheme:
A kind of method of electric wire copper conductor eleetrotinplate, it obtains the operation of finished product after comprising pre-treatment, plating, recovery, cleaning, drying, it is characterized in that: in the plating solution that described electroplating work procedure adopts, each component accounts for the degree of plating solution total amount and is: stannous sulfate 40 ~ 70g/L, sulfuric acid 70 ~ 100g/L, additive 5 ~ 15ml/L, surplus is water; Described electroplating technological parameter is current density 3 ~ 5A/dm2, and temperature is 10 ~ 30 DEG C, copper conductor transfer rate 10 ~ 20m/min.
Preferably, the degree that in the plating solution that adopts of described electroplating work procedure, each component accounts for plating solution total amount is: stannous sulfate 50 ~ 60g/L, sulfuric acid 80 ~ 90g/L, additive 8 ~ 12ml/L, surplus is water.
Wherein, described pretreatment procedure is that the sulphuric acid soln of employing 20% volume fraction carries out pickling.
Wherein, described additive is bright dose of SS-920 Acidic Sn electroplating.
Wherein, described electroplating work procedure be by cleaning after copper cash introduce pot, in pot, plating solution is by above-mentioned recipe configuration, and pot internal fixtion block tin, and block tin is connected with direct supply "+" pole, and copper cash connects power supply "-" pole by cathode drum.
Wherein, described recovery can adopt back means such as scraping plating solution to reclaim tin.
Wherein, described cleaning can adopt clear water to rinse.
Wherein, described drying can adopt dry cloth to dry.
Adopt the method for eleetrotinplate according to the present invention, equal workload installed capacity only 6kW, energy consumption is down to less than 1/5th.
Adopt the method for eleetrotinplate according to the present invention, material tin utilization ratio more than 95%, improve 10%.
Adopt the method for eleetrotinplate according to the present invention, operative employee is without the need to wearing mould, and under room temperature, (10 ~ 30 DEG C) are produced, and all can start or stop production any time, the labour intensity of workman obviously reduces.And melting rule is first by after tin fusing in tin stove, just can start to produce, its more than reactive power 60kW.
Embodiment
Below in conjunction with specific embodiment the present invention done and launch further to illustrate, but it is pointed out that the method for electric wire copper conductor eleetrotinplate of the present invention is not limited to this concrete component or technique.Obviously be understandable that for those skilled in the art, even if the following description content does not make any adjustments or revises, also can be directly applied in these unspecified other similar component and techniques.
A kind of method of electric wire copper conductor eleetrotinplate, it obtains the operation of finished product after comprising pre-treatment, plating, recovery, cleaning, drying, in the plating solution that described electroplating work procedure adopts, each component accounts for the degree of plating solution total amount and is: stannous sulfate 40 ~ 70g/L, sulfuric acid 70 ~ 100g/L, additive 5 ~ 15ml/L, surplus is water; Described electroplating technological parameter is current density 3 ~ 5A/dm
2, temperature is 10 ~ 30 DEG C, copper conductor transfer rate 10 ~ 20m/min.
In a preferred embodiment, the degree that in the plating solution that adopts of described electroplating work procedure, each component accounts for plating solution total amount is: stannous sulfate 50 ~ 60g/L, sulfuric acid 80 ~ 90g/L, additive 8 ~ 12ml/L, surplus is water.
Copper conductor pre-treatment comprises the sulphuric acid soln cleanup acid treatment of employing 20% volume fraction, removes the impurity components such as the zone of oxidation on copper conductor surface.It is understood to one skilled in the art that other treatment steps such as alkali liquid washing, clear water flushing are not got rid of in copper conductor pre-treatment.
Electroplate liquid process for preparation is roughly as follows: in spareslots, add the deionized water or the distilled water that need part to amass half amount, under constantly stirring, adds a certain amount of whole sulfuric acid at leisure.Now, in groove, temperature rises rapidly, slightly cold, then under constantly stirring, adds stannous sulfate, after stannous sulfate all dissolves, adds deionized water or the distilled water of second half amount, cool to room temperature.Be filled into SS-920 (the joining cylinder) brightening agent produced groove, add requirement, stir.Plating solution after electrolysis in 2-4 hour, could formally need be produced through examination plating under normal conditions.
Electroplating work procedure be by cleaning after copper cash introduce pot, in pot, plating solution is by above-mentioned recipe configuration, and pot internal fixtion block tin, and block tin is connected with direct supply "+" pole, and copper cash connects power supply "-" pole by cathode drum.Described electroplating technological parameter is current density 3 ~ 5A/dm
2, temperature is 10 ~ 30 DEG C, copper conductor transfer rate 10 ~ 20m/min.
Recovery process can adopt back means such as scraping plating solution to reclaim tin, but is not limited thereto, and also can adopt other conventional means of this area.
Matting can adopt clear water to rinse, but is not limited thereto, and also can adopt other conventional cleaning means of this area, and such as flowing water cleaning, hot water scalds, steam purge etc.
Drying can adopt dry cloth to dry, but is not limited thereto, and also can adopt other conventional dry means, such as hot-air seasonings of this area.
In process of production, the solvent in pot needs to supplement along with the carrying out produced, by plating solution device for supplying the solution composition that supplements and ratio with previously opened composition that cylinder is, ratio is consistent.
Embodiment 1
By copper conductor to be plated with after the sulphuric acid soln pickling of 20% volume fraction, introduce in the plating tank of 1L and electroplate, and in pot, electroplate liquid formulation is stannous sulfate 40g, sulfuric acid 70mg, SS-920 additive 5ml, surplus is water.And pot internal fixtion block tin, block tin is connected with direct supply "+" pole, and copper cash connects power supply "-" pole by cathode drum, and electroplating technological parameter is current density 3A/dm
2, temperature is 10 DEG C, copper conductor transfer rate 10m/min.The copper conductor of eleetrotinplate, after reclaiming tin, obtains finished product with clear water flushing, dry cloth after drying.
Adopt the tinned wird that the inventive method is produced, no matter from performance and quality product, all meet GB4910-85 national standard and Chinese RoHS (" electrically, in electronics, restriction uses some Hazardous Substances Directive ") standard, and quality product is better, material use efficiency is higher, be about 96%, energy consumption is lower, is about 6kW.
Embodiment 2
Operation is with embodiment 1, and be uniquely stannous sulfate 70g/L unlike electroplate liquid formulation, sulfuric acid 100g/L, additive 15ml/L, surplus is water.
Adopt the tinned wird that the inventive method is produced, no matter from performance and quality product, all meet GB4910-85 national standard and Chinese RoHS (" electrically, in electronics, restriction uses some Hazardous Substances Directive ") standard, and quality product is better, material use efficiency is higher, be about 97%, energy consumption is lower, is about 6.5kW.
Embodiment 3
Operation is with embodiment 1, and be uniquely stannous sulfate 50g/L unlike electroplate liquid formulation, sulfuric acid 80g/L, additive 8ml/L, surplus is water.
Adopt the tinned wird that the inventive method is produced, no matter from performance and quality product, all meet GB4910-85 national standard and Chinese RoHS (" electrically, in electronics, restriction uses some Hazardous Substances Directive ") standard, and quality product is better, material use efficiency is higher, be about 98%, energy consumption is lower, is about 5.5kW.
Embodiment 4
Operation is with embodiment 1, and be uniquely stannous sulfate 60g/L unlike electroplate liquid formulation, sulfuric acid 90g/L, additive 12ml/L, surplus is water.
Adopt the tinned wird that the inventive method is produced, no matter from performance and quality product, all meet GB4910-85 national standard and Chinese RoHS (" electrically, in electronics, restriction uses some Hazardous Substances Directive ") standard, and quality product is better, material use efficiency is higher, be about 97.5%, energy consumption is lower, is about 5.8kW.
Although give detailed description and explanation to the specific embodiment of the present invention above; but what should indicate is; we can carry out various equivalence according to conception of the present invention to above-mentioned embodiment and change and amendment; its function produced do not exceed that specification sheets contains yet spiritual time, all should within protection scope of the present invention.
Claims (2)
1. a method for electric wire copper conductor eleetrotinplate, it obtains the operation of finished product after comprising pre-treatment, plating, recovery, cleaning, drying, it is characterized in that:
In the plating solution that described electroplating work procedure adopts, each component accounts for the degree of plating solution total amount and is: stannous sulfate 40 ~ 70g/L, sulfuric acid 70 ~ 100g/L, SS-920 Acidic Sn electroplating bright dose of 5 ~ 12ml/L, and surplus is water; Described electroplating work procedure is that the copper cash after pretreatment cleaning is introduced pot, and pot internal fixtion block tin, block tin is connected with direct supply "+" pole, and copper cash connects power supply "-" pole by cathode drum;
Described electroplating technological parameter is current density 3 ~ 5A/dm
2, temperature is 10 ~ 30 DEG C, copper conductor transfer rate 10 ~ 20m/min; Described pretreatment procedure is that the sulphuric acid soln of employing 20% volume fraction carries out pickling.
2. the method for a kind of electric wire copper conductor eleetrotinplate according to claim 1, it is characterized in that the degree that each component in the plating solution that described electroplating work procedure adopts accounts for plating solution total amount is: stannous sulfate 50 ~ 60g/L, sulfuric acid 80 ~ 90g/L, SS-920 Acidic Sn electroplating bright dose of 8 ~ 12ml/L, surplus is water.
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| CN103545698B (en) * | 2013-10-12 | 2016-05-04 | 合肥聚能电物理高技术开发有限公司 | Hyperconductive cable surface tining and moulding method |
| CN104060309A (en) * | 2014-06-13 | 2014-09-24 | 安徽省宁国天成电工有限公司 | Surface tinning method of metallic copper wire |
| WO2016080823A1 (en) * | 2014-11-19 | 2016-05-26 | Ontiveros Balcázar Alberto Manuel | Parts and electrodes made of zinc, coated in tin, and method for the production thereof |
| CN108754551A (en) * | 2018-06-21 | 2018-11-06 | 安徽特力电缆有限公司 | A kind of electroplate liquid of cable conductor and its electro-plating method for cable copper conductor |
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| CN1008749B (en) * | 1988-09-28 | 1990-07-11 | 天津大学 | Process for preparation of composite tin-plating layer |
| CN1094099A (en) * | 1994-03-24 | 1994-10-26 | 天津大学 | The tinned method of a kind of acidity |
| CN101302634A (en) * | 2008-06-24 | 2008-11-12 | 彭旭林 | Plating solution formula of copper wire tin plating process and copper wire tin plating process |
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Denomination of invention: A Method of Electroplating Tin on Copper Conductors of Electric Wires and Cables Effective date of registration: 20230811 Granted publication date: 20160323 Pledgee: Wuwei Silver Village bank LLC Pledgor: ANHUI CONSTANT CRYSTAL CABLE GROUP Co.,Ltd. Registration number: Y2023980051860 |
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