CN108198668A - A kind of preparation method of electromagnetic wire - Google Patents
A kind of preparation method of electromagnetic wire Download PDFInfo
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- CN108198668A CN108198668A CN201810013381.5A CN201810013381A CN108198668A CN 108198668 A CN108198668 A CN 108198668A CN 201810013381 A CN201810013381 A CN 201810013381A CN 108198668 A CN108198668 A CN 108198668A
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- copper
- copper conductor
- electromagnetic wire
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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
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- Manufacturing & Machinery (AREA)
- Insulated Conductors (AREA)
- Processes Specially Adapted For Manufacturing Cables (AREA)
Abstract
The present invention proposes a kind of preparation method of electromagnetic wire, carries out continuous wire drawing processing including low-oxygen copper pole is put into big wire drawing machine, obtains the flawless semi-finished product copper base material of surface-brightening；The semi-finished product copper base material continuation is drawn to corresponding copper conductor on Lian Lalian chartered planes；Before annealing, the copper conductor is first cleaned；Then anneal copper conductor in the lehr；The coating insulated paint of multi-pass is carried out to treated copper conductor, later into baker；Cooling processing is carried out to the wire rod of high temperature；Coat lubricating oil；It is wound to make on take-up reel tool and becomes finished product.The electromagnetic wire of the present invention has cryogenic direct-welding performance；The scolding tin in 2 seconds is completed under the conditions of 380 DEG C；High temperature resistance；Under the conditions of 270 DEG C, paint film is not by thermal breakdown within 2 minutes；Excellent adhesion；1D windings after extension do not crack；Meet the high-tension requirement of product.
Description
Technical field
The present invention relates to electromagnetic wire technical fields, particularly relate to a kind of preparation method of electromagnetic wire.
Background technology
With the high speed development of electronic apparatus industrial circle, the welding performance of electromagnetic wire is increasingly tended to quickly and easily
Mode carries out, without the removal in advance of the paint film of electromagnetic wire weld is welded between connector.
Have direct-welding property in electromagnetic wire industry at present is polyurethane products with paint, and because containing in polyurethane structural
The poor carbamate groups of a large amount of thermostabilizations, may be only available for heat-resisting relatively low occasion, it is difficult to meet the requirement in market.
Due to the Miniaturization Design of product, the reduction of small product size, it is meant that sacrifice product heat dissipation for cost, to electromagnetism
The heat resistance of line proposes higher requirement；Continuous requirement of the Product Terminal client to quality simultaneously, needs making for product
Become the target that market is chased with the product with higher service life, high quality.In addition the competition in present market constantly rises
Temperature, electromagnetic wire are continuously increased using client in the speed of coiling wire rod, more use proposition higher to the electric property of electromagnetic wire
Requirement；Efficient production efficiency requirement product uses the less time in welding simultaneously.Electromagnetic wire industry at home, can be same
When meet in 380 DEG C of direct scolding tin and softening temperature in the product not less than 270 DEG C, still belong to blank at present.
Invention content
A kind of insulated paint of present invention proposition is applied in copper conductor electromagnetic wire and the preparation method of electromagnetic wire, solves existing
In technology polyester product can not scolding tin the problem of.
The technical proposal of the invention is realized in this way：
A kind of preparation method of electromagnetic wire, including：
(1) low-oxygen copper pole is put into big wire drawing machine and carries out continuous wire drawing processing, obtain the flawless semi-finished product of surface-brightening
Copper base material；The semi-finished product copper base material continuation is drawn to corresponding copper conductor on Lian Lalian chartered planes；Wherein used in wire drawing
A concentration of 13.5~15.5, the pH of wire drawing oil is 8.0~9.5；The low-oxygen copper pole, semi-finished product copper base material and copper conductor exist
The state of micro- slip is in when on wiredrawing step pulley, slide coefficient is controlled between 1.02~1.04；The material of the wiredrawing step pulley
Expect for nano zircite；
(2) before annealing, the remaining copper powder of copper conductor surface and greasy dirt first are cleared up using water spray mode；Then in annealing furnace
Middle anneal copper conductor carries out sofening treatment to copper conductor, makes cell configuration damaged in drawing process Regeneration and Repair at high temperature；
The temperature of the annealing furnace is 570-620 DEG C；
(3) the coating insulated paint of multi-pass is carried out to treated copper conductor, every time baking time is 2-3 second, baking
Temperature control is roasted at 480 DEG C, surface is solidified under this temperature action and forms smooth continuous whole insulating resin layer；It recycles
Cooling device carries out cooling processing to the wire rod of high temperature；The insulated paint has straight scolding tin performance；The cooling device is by cold
But wind turbine, cooling blowing wind turbine and pipeline composition is sucked out, wherein wind turbine is sucked out in cooling blows into pipe by extracting outdoor cold air
Road cools down copper conductor, and the hot-air after copper conductor is cooled down, and hot-air is changed road and is transported in cooling blowing wind turbine discharge line
In baker interlayer, to compensate equipment dispersed heat；
(4) lubricating oil is coated to step (3) treated copper conductor, within 1-2 seconds time, the solvent of the lubricating oil into
Divide volatilization, lubricating grease composition is stayed in into coating surface；It is wound to make on take-up reel tool and becomes finished product.
As preferred technical solution, the wire drawing liquid in step (1) drawing process guides to die inlet using conduit
Place.
As preferred technical solution, the copper content of the low-oxygen copper pole is not less than 99.95%.The advantages of using hypoxemia copper
It is：A, the crystal grain of hypoxemia copper is smaller, and smooth surface is easily obtained after drawing, is an important factor for ensureing properties of product.b、
The resistivity of hypoxemia copper is smaller, and calorific value is smaller in the product course of work, improves the service life of product.C, hypoxemia copper prolongs
Better performances are opened up, after the effect by annealing furnace, product has excellent ductility, disclosure satisfy that making for high-speed winding
With.
As preferred technical solution, the insulated paint in the step (3) is prepared by the substance of following component：Second two
Alcohol, glycerine, diethanol amine, triethanolamine, M-phthalic acid, adipic acid, cresols solvent and dimethylbenzene, wherein ethylene glycol, third
Triol, diethanol amine, triethanolamine, M-phthalic acid, adipic acid, cresols solvent, dimethylbenzene molar ratio be 1:0.8:0.8:
1:1:0.9:3:3。
As preferred technical solution, the preparation of the insulated paint includes：Under the protection of pure nitrogen gas, second two is put into successively
Alcohol, glycerine, diethanol amine, triethanolamine, M-phthalic acid, adipic acid；Under agitation, reaction temperature is gradually increased to arrive
200 DEG C, pellucidity is reacted to, obtains the prepolymer resin of isocyanate group, hydroxyl and imine modified group；Add cresols
Solvent after stirring 2-3 hours, cools to after room temperature and adds dimethylbenzene again to get insulated paint.
As preferred technical solution, electromagnetic wire obtained includes copper conductor and gathers with the modification for being attached to the copper conductor surface layer
Ester resin.
As preferred technical solution, the cured paint film of the electromagnetic wire has straight scolding tin performance.
As preferred technical solution, the cured paint film does not puncture in 270 DEG C of softenings.
As preferred technical solution, the copper conductor it is a diameter of：0.100~3.500mm.
It, will in the step (1) as preferred technical solutionLow-oxygen copper pole put into big wire drawing machine into
The processing of row continuous wire drawing under the action of drawing mould and wire drawing liquid, obtainsSemi-finished product copper base material, copper base material
The smooth no pit defect in surface；The copper that the continuation of semi-finished product copper base material is drawn to 0.63mm on Lian Lalian chartered planes is led
Body.
Due to wire rod, the phase mutual friction in low sliding mode and wiredrawing step pulley causes wire rod easy in itself on wiredrawing step pulley
Damage forms the defects of abrading.It improves in terms of following two for this phenomenon of solution and is 1. in copper material on wiredrawing step pulley
The state of micro- slip, slide coefficient are controlled between 1.02~1.04；2. it is substituted by using nano zirconia material traditional
Sprayed ceramic material effectively imitates the smooth degree for improving conductor.
The spray system of wire drawing is improved, spray system originally is sprayed for spraying head type, a big chunk wire drawing oil
It is not sprayed onto working region.By improving the improvement of spray, guided at die inlet using conduit, when ensureing drawing to the greatest extent
The adequacy of lubrication.
Since copper material is in drawing process, surface can more or less adhere to micro copper powder, and the presence of copper powder can influence most
The electric property of finished product.Increase water cleaning process before annealing in the process cleaned after conventional annealing, ensure to the greatest extent
The cleaning effect of conductive surface, the performance for product provide guarantee.
The effect of annealing is the high temperature by 570-620 DEG C or so of annealing furnace, makes copper structure cell damaged in drawing process
It is repaired under high temperature action, obtains copper wire straight and with ductility, be ready for lower road painting process.
Every time baking time is 2-3 seconds, and stoving temperature is controlled at 480 DEG C, and fluid insulation paint is made in very short time
Fully it is formed by curing solid-like.
General in the prior art to be blown into cooling duct using a wind turbine extraction outdoor cold air, another wind turbine is sucked out logical
Hot gas and discharge in road, the present invention are improved in tooling, and the hot gas duct being sucked out in channel is changed road to baker interlayer
In, compensate equipment dispersed heat, by this measure, one day electrical loss that can reduce 500 degree of equipment.Specifically, conductor
Air blast cooling is carried out but by a set of cooling device, cooling device is made of two high-speed fans and pipeline, one of high speed
Wind turbine blows into tube-cooled copper conductor by extracting outdoor cold air, in another high-speed fan discharge line after cooling copper conductor
Hot-air.
Advantageous effect
(1) cryogenic direct-welding performance；Normal polyester electromagnetic wire in industry can not realize the function of direct scolding tin, usually all be
It is realized completing one layer of scaling powder of product surface coating；Product of the present invention can complete the weldering in 2 seconds under the conditions of 380 DEG C
Tin；The efficiency for substantially increasing production reduces scaling powder for the influence in terms of environmental protection simultaneously.
(2) high temperature resistance；For the opposite polyurethane products with straight weldering property, the softening resistance of electromagnetic wire of the invention
It can be up to 270 DEG C or more；And the resistance to softening temperature of conventional polyurethane only has 200 DEG C.
(3) excellent adhesion；Resin has copper material stronger adhesion property；The adhesion standard of conventional products is not
Product after the 1D windings of extension does not crack；1D windings after the electromagnetic wire of the present invention can be extended do not crack；Meet product
High-tension requirement.
(4) excellent leakproofness；Insulated paint is by liquid condition, by high-temperature baking, forms the smooth resin layer in surface,
It is horizontal up to zero pin hole of brine.(5) friction coefficient is low；By coating lubricating oil (number of patent application：201010132838.8), make
The sliding of product greatly improves, friction coefficient can be down to 0.06 and hereinafter, friction coefficient far below other products；It can expire
It does not break during the high-speed winding of sufficient product, damage of the friction to wire rod is reduced, so as to ensure the controlled of product quality.
Description of the drawings
It, below will be to embodiment in order to illustrate more clearly of embodiment of the present invention or technical solution of the prior art
Or attached drawing needed to be used in the description of the prior art is briefly described, it should be apparent that, the accompanying drawings in the following description is only
It is some embodiments of the present invention, for those of ordinary skill in the art, in the premise of not making the creative labor property
Under, it can also be obtained according to these attached drawings other attached drawings.
Fig. 1：The structure diagram of 1 electromagnetic wire of embodiment；Wherein 1- directly weldering property polyester resin layer, 2- copper conductors；
Fig. 2：The schematic diagram of the cooling device of embodiment 1；Wind turbine, 22- cooling blowing wind turbines is sucked out in wherein 21- coolings.
Specific embodiment
The technical solution in the embodiment of the present invention will be clearly and completely described below, it is clear that described implementation
Example is only part of the embodiment of the present invention, instead of all the embodiments.Based on the embodiments of the present invention, this field is common
Technical staff's all other embodiments obtained without making creative work belong to the model that the present invention protects
It encloses.
The present invention is closely coated on copper conductor table using insulated paint by forming hard resin, resin layer after high-temperature baking
Face forms electromagnetic wire product.
Embodiment 1
A kind of preparation method of electromagnetic wire includes the following steps：
Step S1：Make conductor；
Low-oxygen copper pole put into big wire drawing machine and carry out continuous wire drawing processing, in drawing mould and wire drawing liquid
Under effect, obtainSemi-finished product copper base material, the smooth no pit defect in surface of copper base material； Semi-finished product copper
Blank continuation is drawn to corresponding specification silk, wherein wire drawing liquid concentration 13.5~15.5 on Lian Lalian chartered planes, pH for 8.0~
9.5.It is to obtain the key factor of bright and clean zero defect copper conductor wherein to the management and control of wire drawing liquid concentration and pH value.
Step S2：The cleaning process of conductive surface before annealing clears up the remaining copper of copper conductor surface using water spray mode
Powder and greasy dirt；Spray system originally is sprayed for spraying head type, and a big chunk wire drawing oil is not sprayed onto working region；Pass through spray
It improves, is guided at die inlet using conduit, can ensure the adequacy lubricated during drawing to the greatest extent.Later in annealing furnace
Anneal conductor, optional 570-620 DEG C of temperature using 600 DEG C, time 4s in the present embodiment, carry out sofening treatment to conductor, make drawing
Regeneration and Repair, the conductor after annealing have certain flexibility to damaged cell configuration at high temperature during pulling out；
Step S3：The coating insulated paint of multi-pass is carried out to treated copper conductor using japanning die, per layer insulating
Thickness coated according to a certain percentage, in the process japanning be divided into 17 passages (having variation according to actual conditions), adopt
With the principle of thin paint overbrushing, ensure that every time japanning is controlled, do not have overbaking or the not appearance of foot phenomenon；Every time
Baking time be 2-3 second, stoving temperature control at 480 DEG C, be solidified under this temperature action surface formed it is smooth continuous whole
Insulating resin layer.Copper conductor with insulating resin layer enters cooling device, and cooling processing is carried out to the wire rod of high temperature.It is existing
Outdoor cold air is generally extracted using a wind turbine in technology and is blown into cooling duct, the hot gas in another wind turbine suction channel is simultaneously
Discharge, the present invention are improved in tooling, and the hot gas duct being sucked out in channel is changed in road to baker interlayer, and compensation equipment dissipates
The heat of mistake, by this measure, one day electrical loss that can reduce 500 degree of equipment.Specifically, conductor is filled by a set of cooling
Put it is (as shown in Figure 2) progress air blast cooling but, the cooling device by cooling be sucked out wind turbine 21, cooling blowing wind turbine 22 and
Pipeline forms, wherein wind turbine 21 is sucked out in cooling blows into tube-cooled copper conductor, cooling blowing wind turbine by extracting outdoor cold air
Hot-air in 22 discharge lines after cooling copper conductor, and hot-air is changed into road and is transported in baker interlayer, it is dissipated with compensating equipment
The heat of mistake.Wherein insulated paint is prepared by the substance of following component：Ethylene glycol, glycerine, diethanol amine, triethanolamine,
M-phthalic acid, adipic acid, cresols solvent and dimethylbenzene, wherein ethylene glycol, glycerine, diethanol amine, triethanolamine, isophthalic two
Formic acid, adipic acid, cresols solvent, dimethylbenzene molar ratio be 1:0.8:0.8:1:1:0.9:3:3.It is specific as follows：In pure nitrogen gas
Protection under, successively put into ethylene glycol, glycerine, diethanol amine, triethanolamine, M-phthalic acid, adipic acid；In stirring state
Under, reaction temperature is gradually increased to 200 DEG C, is reacted to pellucidity, obtains isocyanate group, hydroxyl and imine modified group
Prepolymer resin；Cresols solvent is added, after stirring 2-3 hours, cools to after room temperature and adds dimethylbenzene again to get insulated paint.
Step S4:Lubricating oil, within 1-2 seconds time, the profit will be coated by the surface of step S3 treated products
The solvent composition volatilization of lubricating oil, coating surface is stayed in by lubricating grease composition, coats the finished surface lubricity after lubricating oil more
It is suitble to the use of high-speed winding machine will.It is wound to make on take-up reel tool and becomes finished product, be put in storage after the assay was approved.
The cured paint film of above-mentioned electromagnetic wire has straight scolding tin performance.Cured paint film does not puncture in 270 DEG C of softenings.Copper is led
The diameter of body can select between 0.100~3.500mm, be 0.63mm in the present embodiment.
The copper content of the above-mentioned low-oxygen copper pole used is not less than 99.95%.It is using the advantages of hypoxemia copper：A, hypoxemia copper
Crystal grain is smaller, and smooth surface is easily obtained after drawing, is an important factor for ensureing properties of product.B, the resistivity of hypoxemia copper
Smaller, calorific value is smaller in the product course of work, improves the service life of product.C, the ductility of hypoxemia copper is preferable,
After the effect of annealing furnace, product has excellent ductility, disclosure satisfy that the use of high-speed winding.
In addition wire rod phase mutual friction in low sliding mode and wiredrawing step pulley on wiredrawing step pulley causes wire rod easy in itself
Damage forms the defects of abrading.1. being improved in terms of following two for this phenomenon of solution makes copper material be in micro- cunning on cone pulley
Dynamic state, 2. wiredrawing step pulley substitutes tradition by using nano zirconia material between 1.02~1.04 for slide coefficient control
Sprayed ceramic material effectively imitate improve conductor smooth degree.The spray system of wire drawing is also improved, spray system originally
It unites and is sprayed for spraying head type, a big chunk wire drawing oil is not sprayed onto working region.By improving the improvement of spray, guided to using conduit
At die inlet, the maximum adequacy for ensureing to lubricate during drawing.
The effect of above-mentioned annealing is the high temperature by 600 DEG C or so of annealing furnace, makes copper structure cell damaged in drawing process
It is repaired under high temperature action, obtains copper wire straight and with ductility, be ready for lower road painting process.
The performance of electromagnetic wire obtained above meets claimed below：
1st, product elongation：MIN25%；
2nd, performance is wound：Under 1D winding conditions, paint film does not crack；
3rd, thermal shock：After 3d windings, toasted under the conditions of 175 DEG C, paint film does not crack；
4th, paint film scratch resistance：Minimum scraping force is not less than 5.1N；Average scraping force is not less than 6N；
5th, brine pin hole：6 rice noodles samples detect, and are placed in 0.2% saline solution, 1 minute under the conditions of energization 12V, needleless
Hole generates；
6th, scolding tin performance：Under the conditions of 380 DEG C, scolding tin (2s) is completed within 3 seconds, surface is remained without scruff；
7th, softening breakdown：Under the conditions of 270 DEG C, paint film is not by thermal breakdown within 2 minutes；
8th, product surface：Surface will be covered by paint film completely.
The foregoing is merely illustrative of the preferred embodiments of the present invention, is not intended to limit the invention, all essences in the present invention
With within principle, any modification, equivalent replacement, improvement and so on should all be included in the protection scope of the present invention god.
Claims (6)
1. a kind of preparation method of electromagnetic wire, including：
(1) low-oxygen copper pole is put into big wire drawing machine and carries out continuous wire drawing processing, obtain the flawless semi-finished product copper base of surface-brightening
Material；The semi-finished product copper base material continuation is drawn to corresponding copper conductor on Lian Lalian chartered planes；The wire drawing wherein used in wire drawing
A concentration of 13.5~15.5, the pH of oil is 8.0~9.5；The low-oxygen copper pole, semi-finished product copper base material and copper conductor are in wire drawing
The state of micro- slip is in when on cone pulley, slide coefficient is controlled between 1.02~1.04；The material of the wiredrawing step pulley is
Nano zircite；
(2) before annealing, the remaining copper powder of copper conductor surface and greasy dirt first are cleared up using water spray mode；Then it is tough in the lehr
Copper metallurgy conductor carries out sofening treatment to copper conductor, makes cell configuration damaged in drawing process Regeneration and Repair at high temperature；It is described
The temperature of annealing furnace is 570-620 DEG C；
(3) the coating insulated paint of multi-pass is carried out to treated copper conductor, every time baking time is 2-3 second, is baked warm
Degree control is solidified into surface under this temperature action and forms smooth continuous whole insulating resin layer at 480 DEG C；Recycle cooling
Device carries out cooling processing to the wire rod of high temperature；The insulated paint has straight scolding tin performance；The cooling device is inhaled by cooling
Blowing machine, cooling blowing wind turbine and pipeline composition, wherein wind turbine is sucked out in cooling, by extracting outdoor cold air, to blow into pipeline cold
But copper conductor, the interior hot-air cooled down after copper conductor of cooling blowing wind turbine discharge line, and hot-air is changed into road and is transported to baker
In interlayer, to compensate equipment dispersed heat；
(4) lubricating oil is coated to step (3) treated copper conductor, within 1-2 seconds time, the solvent composition of the lubricating oil is waved
Hair, coating surface is stayed in by lubricating grease composition；It is wound to make on take-up reel tool and becomes finished product.
A kind of 2. preparation method of electromagnetic wire according to claim 1, which is characterized in that the hypoxemia in the step (1)
The copper content of copper bar is not less than 99.95%.
A kind of 3. preparation method of electromagnetic wire according to claim 1, which is characterized in that step (1) drawing process
In wire drawing liquid guided at die inlet using conduit.
A kind of 4. preparation method of electromagnetic wire according to claim 1, which is characterized in that the insulation in the step (3)
Paint is prepared by the substance of following component：Ethylene glycol, glycerine, diethanol amine, triethanolamine, M-phthalic acid, adipic acid,
Cresols solvent and dimethylbenzene, wherein ethylene glycol, glycerine, diethanol amine, triethanolamine, M-phthalic acid, adipic acid, cresols are molten
Agent, dimethylbenzene molar ratio be 1:0.8:0.8:1:1:0.9:3:3.
A kind of 5. preparation method of electromagnetic wire according to claim 4, which is characterized in that the preparation packet of the insulated paint
It includes：Under the protection of pure nitrogen gas, successively put into ethylene glycol, glycerine, diethanol amine, triethanolamine, M-phthalic acid, oneself two
Acid；Under agitation, reaction temperature is gradually increased to 200 DEG C, is reacted to pellucidity, obtain isocyanate group, hydroxyl and
The prepolymer resin of imine modified group；Cresols solvent is added, after stirring 2-3 hours, diformazan is added again after cooling to room temperature
Benzene is to get insulated paint.
6. the preparation method of a kind of electromagnetic wire according to claim 1, which is characterized in that electromagnetic wire obtained is led including copper
Body and the modified polyester resin for being attached to the copper conductor surface layer.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013381.5A CN108198668B (en) | 2018-01-08 | 2018-01-08 | Preparation method of electromagnetic wire |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201810013381.5A CN108198668B (en) | 2018-01-08 | 2018-01-08 | Preparation method of electromagnetic wire |
Publications (2)
| Publication Number | Publication Date |
|---|---|
| CN108198668A true CN108198668A (en) | 2018-06-22 |
| CN108198668B CN108198668B (en) | 2020-02-28 |
Family
ID=62588020
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| CN201810013381.5A Active CN108198668B (en) | 2018-01-08 | 2018-01-08 | Preparation method of electromagnetic wire |
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Cited By (4)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN112275815A (en) * | 2020-09-30 | 2021-01-29 | 乐清志向电磁线有限公司 | Low-energy-consumption wire drawing process and device for electromagnetic wire production |
| CN112349452A (en) * | 2020-11-25 | 2021-02-09 | 露笑科技股份有限公司 | Low-temperature direct-welding polyester electromagnetic wire and manufacturing method thereof |
| CN113035450A (en) * | 2021-03-11 | 2021-06-25 | 天津精达里亚特种漆包线有限公司 | Production method of nitrogen-free environment-friendly electromagnetic wire and nitrogen-free environment-friendly electromagnetic wire |
| CN113956659A (en) * | 2021-10-25 | 2022-01-21 | 安徽聚虹电子有限公司 | Corrosion-radiation-resistant environment-friendly special electromagnetic wire |
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