CN101582310A - Hot-compress dip-coating insulation method of copper bar - Google Patents
Hot-compress dip-coating insulation method of copper bar Download PDFInfo
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- CN101582310A CN101582310A CNA2009100746618A CN200910074661A CN101582310A CN 101582310 A CN101582310 A CN 101582310A CN A2009100746618 A CNA2009100746618 A CN A2009100746618A CN 200910074661 A CN200910074661 A CN 200910074661A CN 101582310 A CN101582310 A CN 101582310A
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Abstract
The invention relates to an insulation method of copper bars, in particular to a hot-compress dip-coating insulation method of copper bar, solving the defect and insufficiency of the existing insulation method of copper bars. The hot-compress dip-coating insulation method comprises the following steps: 1. a copper bar is cleaned, and the electric interface of the copper bar is protected and bound up; 2. the copper bar is preheated at the temperature of 170 to 190 DEG C, and kept for 20 minutes at the temperature of 170 to 190 DEG C; 3. the preheated copper bar is put in an epoxy encapsulating material fluidized bed, the surface of the copper bar is treated with hot pack by epoxy encapsulating material, and then dusting powder on the surface of the copper bar is quickly twittered; 4. the electric interface of the copper bar, which is treated with hot pack, is protected and eliminated, and the end of the electric interface is trimmed; and 5. at the temperature of 140 to 150 DEG C, the copper bar is solidified for 30 minutes, and then the solidified copper bar is dried. The invention improves the insulativity, the chemical resistance, the weather fastness and the like of the copper bar, lightens labor intensity, saves cost, improves the service life of the copper bar, and solves the inextricable problems of the existing insulation lapping and heat shrinking of tubing.
Description
Technical field
The present invention relates to insulating method, particularly the copper bar insulating method is specially a kind of hot-compress dip-coating insulation method of copper bar.
Background technology
Various types of insulation copper bars are widely used conduction equipment on the locomotive, and the copper bar insulating treatment method mainly is divided into lapped insulation and heat-shrink tube suit dual mode at present.Lapped insulation is at first two-layer with the polyimide film half-stack package at insulation layer, two-layer with the silicon rubber self-adhesive tape half-stack package, with glass tape half-stack package one deck, use silicon rubber self-adhesive tape half-stack package one deck then with polyimide film half-stack package two and at two, at last the copper bar that bandages is passed through (temperature 110-130 ℃ of preliminary drying, 120 minutes time), solidify (temperature: 150-155 ℃, time 7-8 hour), japanning (brushing 9150 insulating varnish 2-3 times with 1.5 cun hairbrush) at the wrapping insulated part, cleaning (removing termination self-adhesive tape and polyimide film) meets the requirements of withstand voltage; The heat-shrink tube suit is to select PVC sleeve according to the copper bar different size, overlaps while blowing with heat gun, makes the copper bar surface form insulating barrier.Above-mentioned two kinds of process labour intensity are big, be subjected to technical skills and artificial factor may cause wrapping up problems such as spacing is inhomogeneous, the winding degree of tightness is inconsistent, hot air temperature is inhomogeneous, the uneven generation of suit its surface compressed weak spot, especially complex-shaped copper bar, manufacture difficulty increases, and directly influences the dielectric voltage withstand quality.
Summary of the invention
The present invention is specially the big and unwarrantable problem of copper bar insulation quality of labour intensity in order to solve defective and the deficiency that existing copper bar insulating method exists, and a kind of hot-compress dip-coating insulation method of copper bar is provided.
The present invention adopts following technical scheme to realize: hot-compress dip-coating insulation method of copper bar, this method are to adopt following steps to realize: a, copper bar is cleaned, the electric interface with copper bar protects, wraps up then; B, preheating and insulation 20 minutes under this temperature under 170-190 ℃ the environment with copper bar in temperature; C, the copper bar that preheating is good place epoxy to seal in the material fluid bed, epoxy is carried out on the copper bar surface seal the material hot compress, shake the floating powder in copper bar surface then fast; D, the copper bar electric interface protection that hot compress is finished are dispeled and to its end finishing; E, copper bar are to solidify after 30 minutes under 140-150 ℃ the environment to dry naturally in temperature.In the hot-compress dip-coating insulation method of copper bar of the present invention employed fluid bed be existing be used for epoxy seal the material hot compress device, to the copper bar surface carry out epoxy seal the material hot compress number of times and time should adjust according to design thickness.Among the present invention, the selection of preheat temperature and curing temperature is the key of technology.In warm, preheat temperature is low excessively, causes overlay thin excessively, influences copper bar insulation property and resistance to impact; Preheat temperature is too high, except increasing manufacturing cost, can not impact copper bar hot-compress dip-coating process itself, but the epoxy that can make the copper bar surface is sealed material and is produced bubble, interlayer and be fragility, thereby influence epoxy and seal the thermal endurance of material, corrosion resistance, weatherability, moisture-proof and flame resistance etc., main influence is the thermal endurance that epoxy is sealed material among the present invention, has promptly reduced the resistance of hot compress copper bar impact.Preheat temperature scope of the present invention is for 170-190 ℃ to draw on the basis of a large amount of experiments, has well played the effect of insulation when the protection epoxy is sealed the performance of material.In solidification process, curing temperature is low excessively, cause curing not exclusively, not thorough, viscosity is low excessively, influences intensity, resistance to impact and the ageing resistance etc. on hot compress copper bar surface; Curing temperature is too high, increases the thermal stress that copper bar surface epoxy is sealed material, is prone to bubble, air gap etc., influences epoxy and seals the insulation property of material and impact resistance etc.The present invention takes all factors into consideration above-mentioned various factors, draws curing temperature of the present invention equally on the basis of a large amount of experiments.Epoxy is sealed material and is mainly used in product is sealed and insulate, and auxiliary material polyimide film and silicon rubber self-adhesive tape used in the insulating method are the product that can buy on the market.Theoretically, epoxy seal the material of material selected after, its preheat temperature and curing temperature have just been determined, but this is the scope of a broad, in order to prevent above-mentioned problem, the present invention optimizes preheat temperature and curing temperature.
During the copper bar preheating, thickness is the following copper bar preheating under 170-180 ℃ temperature of 5mm, thickness is more than or equal to copper bar preheating under 180-190 ℃ temperature of 5mm, also will raise according to the temperature of the increase preheating of copper bar thickness, could guarantee that so the required temperature in copper bar surface reaches required value.
Copper bar carries out epoxy to be sealed when expecting hot compress, and according to the desired thickness hot compress of design 1-4 time, each hot compress time is 1-3 second, and hot compress can be satisfied the desired thickness of design in this scope, has also avoided cost waste.
After the copper bar hot compress, the fault location of copper bar surface hot compress is carried out the hand spray epoxy seal material, and then shake the floating powder in copper bar surface fast, more evenly tight to guarantee copper bar surface hot compress.
The present invention has not only improved the insulating properties on copper bar surface by the design to the copper bar insulating method, performance such as chemical resistance and weatherability, and for complex-shaped copper bar, also can once realize the insulation of copper bar, cover the turning and the sags and crests of different shape on the copper bar, saved cost when reducing labor intensity effectively, and stable and reliable product quality, adhesive force is stronger, energy-conserving and environment-protective, the production efficiency height, product surface is level and smooth, bright and clean, have fire resistance, thereby increased the useful life of copper bar, solved present use and insulated wrapped, the difficult problem that the sleeve pipe pyrocondensation cann't be solved.Record through overtesting: (1) adopts the copper bar of hot-compress dip-coating insulation method insulation, and its thickness of insulating layer can reach more than the 0.8mm, can realize that electrical strength reaches 7000-10000V; (2) be example with railway locomotive DF8B high-voltage board, the copper bar specifications of raw materials is copper busbar TMR6 * 30mm, length 60mm, its cost is compared as follows: adopting the hot-compress dip-coating insulation method required expense that insulate is 874 yuan, and use the existing heat-shrink tube assembling method required expense that insulate is 1696 yuan, and cost has reduced about 50%.(3) copper bar that is used for the hot-compress dip-coating insulation method insulation of Qinghai-Tibet locomotive electric control gear still can not ftracture under subzero 30 ℃ temperature, come off.The insulation copper bar of making under this kind flow process at present has been applied to be widely used in simultaneously in the industrial and mineral car inverter in No. 13 line inverters of Beijing Metro, No. 5 line inverters of Beijing Metro and the DF8B locomotive electric apparatus cabinet.
Description of drawings
Fig. 1 is the schematic flow sheet of hot-compress dip-coating insulation method of copper bar of the present invention on semi-automatic plastic dipping production line;
Fig. 2 is the preheating drying tunnel sectional view of the pre-baker of electric heating on the semi-automatic plastic dipping production line of hot-compress dip-coating insulation method of copper bar of the present invention.
The pre-baker of 1-electric heating among the figure, the 2-fluid bed, the 3-room that dusts, 4-reclaims the room, 5-conveyer belt, 6-electric heating curing oven, 7-drive unit, 8-electric heating preliminary drying grate formula drying tunnel.
Embodiment
Hot-compress dip-coating insulation method of copper bar, this method are employing following steps realization: a, copper bar are cleaned, and the electric interface with copper bar protects, wraps up then; B, preheating and insulation 20 minutes under this temperature under the environment of 170 ℃ (or 175 ℃, or 178 ℃, or 182 ℃, or 188 ℃, or 190 ℃) with copper bar in temperature; C, the copper bar that preheating is good place epoxy to seal in the material fluid bed, epoxy is carried out on the copper bar surface seal the material hot compress, shake the floating powder in copper bar surface then fast; D, the copper bar electric interface protection that hot compress is finished are dispeled and to its end finishing; E, copper bar are that the environment of 140 ℃ (or 142 ℃, or 145 ℃, or 148 ℃, or 149 ℃, or 150 ℃) solidifies after 30 minutes down and dries naturally in temperature.During the copper bar preheating, thickness is the following copper bar of 5mm at 170 ℃ (or 172 ℃, or 175 ℃, or 176 ℃, or 178 ℃, or 179 ℃) temperature under preheating, thickness more than or equal to the copper bar of 5mm at 180 ℃ (or 182 ℃, or 185 ℃, or 186 ℃, or 188 ℃, or 190 ℃) temperature under preheating; Copper bar carries out epoxy and seals material during hot compress, and is inferior according to the desired thickness hot compress 1 of design (or 2, or 3, or 4), and each hot compress time is 1 (or 2, or 3) second; After the copper bar hot compress, the fault location of copper bar surface hot compress is carried out hand spray envelope material, and then shake the floating powder in copper bar surface fast.During concrete enforcement, hot-compress dip-coating insulation method of copper bar of the present invention adopts existing semi-automatic plastic dipping production line to realize.This semi-automatic plastic dipping production line comprises the pre-baker 1 of electric heating, fluid bed 2, the room 3 that dusts, recovery room 4, electric heating curing oven 6, conveyer belt 5 and is used to drive the drive unit 7 of conveyer belt 5, at first the copper bar surface is cleaned with alcohol, gauze and made its surface clean, do not have burr, metal fillings, dust, grease and dirty finger mark, dry then; Then its exposed part (electric interface) is protected, wraps up, the electric interface that is about to copper bar is two-layer with the polyimide film half-stack package, recycle silicon rubber self-adhesive tape half-stack package one deck; Start semi-automatic plastic dipping production line, with anchor clamps copper bar is hung on the conveyer belt 5, the temperature of regulating the pre-baker 1 of electric heating is to 170-190 ℃, stop when copper bar being driven to electric heating preliminary drying grate formula drying tunnel 8 and carry out preheating by drive unit 7 driving conveyer belts 5, make the copper bar surface temperature reach 150-160 ℃, transport out from outlet; Open the centrifugal high pressure fan in the fluid bed 2, the air chamber flow distribution plate is equipped with in fluid bed 2 bottoms, equal pressing plate is made with canvas and steel mesh in air chamber top, make high pressure gas go into shunting in the fluid bed 2 through equal pressing plate step-downs is laggard, this effect is to make epoxy seal material to expand, stir and reach " fluidized state " (promptly evenly floating the thin divided powder of distribution), this moment, the copper bar that preheating is good was put into fluid bed 2 by anchor clamps, to realize the hot-compress dip-coating to copper bar, the uniformity of powder fluidized state is to guarantee to film key uniformly; With anchor clamps copper bar is taken out in fluid bed 2 after the hot compress, upset, shake, prevent that copper bar turning and the convex-concave place surplus powder of deposition envelope material is too much blocked up, for preventing that from there is defective in copper bar surface hot compress follower head, can carry out hand spray by the room 3 that dusts, the envelope material of Li Yonging can not carry out recycling by reclaiming room 4; The copper bar of hot-compress dip-coating moulding hangs on the conveyer belt 5 by anchor clamps through cleaning, finishing back; The temperature of adjusting electric heating curing oven 6 is conveyed into the 6 interior curing of electric heating curing oven with copper bar and dries naturally after 30 minutes to 140-150 ℃, finishes the hot-compress dip-coating process.Copper bar after the preheating enters fluid bed 2 rapidly, in order that reduce thermal loss, the copper bar surface temperature is hot more, and time of immersion is long more, and the thickness of fluosolids is just thick more.The anchor clamps of using in production line can be hook commonly used, when the shape of copper bar is more irregular, but also the anchor clamps of design specialized to realize picking up and putting down the effect of copper bar; It is that the epoxy of HYX-808H004F is sealed material that epoxy described in the present invention is sealed model that material can select for use Xianyang Kang Li electrical material Co., Ltd to produce.
Claims (9)
1, a kind of hot-compress dip-coating insulation method of copper bar is characterized in that: this method is to adopt following steps to realize: a, copper bar is cleaned, the electric interface with copper bar protects, wraps up then; B, preheating and insulation 20 minutes under this temperature under 170-190 ℃ the environment with copper bar in temperature; C, the copper bar that preheating is good place epoxy to seal in the material fluid bed (2), epoxy is carried out on the copper bar surface seal the material hot compress, shake the floating powder in copper bar surface then fast; D, the copper bar electric interface protection that hot compress is finished are dispeled and to its end finishing; E, copper bar are to solidify after 30 minutes under 140-150 ℃ the environment to dry naturally in temperature.
2, hot-compress dip-coating insulation method of copper bar according to claim 1 is characterized in that: during the copper bar preheating, thickness is the following copper bar preheating under 170-180 ℃ temperature of 5mm, and thickness is more than or equal to copper bar preheating under 180-190 ℃ temperature of 5mm.
3, hot-compress dip-coating insulation method of copper bar according to claim 1 and 2 is characterized in that: copper bar carries out epoxy to be sealed when expecting hot compress, and according to the desired thickness hot compress of design 1-4 time, each hot compress time is 1-3 second.
4, hot-compress dip-coating insulation method of copper bar according to claim 1 and 2 is characterized in that: after the copper bar hot compress, the fault location of copper bar surface hot compress is carried out hand spray envelope material, and then shake the floating powder in copper bar surface fast.
5, hot-compress dip-coating insulation method of copper bar according to claim 3 is characterized in that: after the copper bar hot compress, the fault location of copper bar surface hot compress is carried out hand spray envelope material, and then shake the floating powder in copper bar surface fast.
6, hot-compress dip-coating insulation method of copper bar according to claim 1 and 2 is characterized in that: hot-compress dip-coating insulation method of copper bar adopts existing semi-automatic plastic dipping production line to realize.
7, hot-compress dip-coating insulation method of copper bar according to claim 3 is characterized in that: hot-compress dip-coating insulation method of copper bar adopts existing semi-automatic plastic dipping production line to realize.
8, hot-compress dip-coating insulation method of copper bar according to claim 4 is characterized in that: hot-compress dip-coating insulation method of copper bar adopts existing semi-automatic plastic dipping production line to realize.
9, hot-compress dip-coating insulation method of copper bar according to claim 5 is characterized in that: hot-compress dip-coating insulation method of copper bar adopts existing semi-automatic plastic dipping production line to realize.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
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| CN2009100746618A CN101582310B (en) | 2009-06-02 | 2009-06-02 | Hot-compress dip-coating insulation method of copper bar |
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| CN2009100746618A CN101582310B (en) | 2009-06-02 | 2009-06-02 | Hot-compress dip-coating insulation method of copper bar |
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| CN101582310A true CN101582310A (en) | 2009-11-18 |
| CN101582310B CN101582310B (en) | 2011-01-05 |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290156A (en) * | 2011-06-16 | 2011-12-21 | 宁波科鑫腐蚀控制工程有限公司 | Insulating corrosion prevention method for conductive copper bar |
| CN103093895A (en) * | 2011-11-08 | 2013-05-08 | 深南电路有限公司 | Laminating device and laminating method of U-shaped laminated busbar |
| CN105355325A (en) * | 2015-11-29 | 2016-02-24 | 西安铁路信号有限责任公司 | Railway train copper bar protection method |
| CN106653222A (en) * | 2017-01-20 | 2017-05-10 | 美嘉科技（镇江）有限公司 | Processing method for insulation and flame resistance of buses |
| CN108063019A (en) * | 2017-12-26 | 2018-05-22 | 上海振大电器成套有限公司 | A kind of master row insulating layer manufacturing method thereof |
| CN109622312A (en) * | 2019-01-18 | 2019-04-16 | 巨力自动化设备（浙江）有限公司 | Special-shaped line coats assembly line |
| CN110311083A (en) * | 2019-07-24 | 2019-10-08 | 宁波市叶兴汽车零部件有限公司 | Vehicular battery connector processing technology |
Family Cites Families (4)
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| CN201036041Y (en) * | 2006-12-31 | 2008-03-12 | 比亚迪股份有限公司 | Copper bar insulation structure |
| CN101105990A (en) * | 2007-05-31 | 2008-01-16 | 江苏南自通华母线有限公司 | Bus conductor surface insulation layer production method |
| CN201084480Y (en) * | 2007-08-31 | 2008-07-09 | 南亚电气(南通)有限公司 | An epoxy-coated switch cabinet copper bar |
| CN101236804A (en) * | 2008-01-16 | 2008-08-06 | 丹阳市中信化工电器设备有限公司 | A production method for continuous rolling copper-coated aluminum rank material |
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2009
- 2009-06-02 CN CN2009100746618A patent/CN101582310B/en not_active Expired - Fee Related
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN102290156A (en) * | 2011-06-16 | 2011-12-21 | 宁波科鑫腐蚀控制工程有限公司 | Insulating corrosion prevention method for conductive copper bar |
| CN103093895A (en) * | 2011-11-08 | 2013-05-08 | 深南电路有限公司 | Laminating device and laminating method of U-shaped laminated busbar |
| CN103093895B (en) * | 2011-11-08 | 2015-07-01 | 深南电路有限公司 | Laminating device and laminating method of U-shaped laminated busbar |
| CN105355325A (en) * | 2015-11-29 | 2016-02-24 | 西安铁路信号有限责任公司 | Railway train copper bar protection method |
| CN106653222A (en) * | 2017-01-20 | 2017-05-10 | 美嘉科技（镇江）有限公司 | Processing method for insulation and flame resistance of buses |
| CN108063019A (en) * | 2017-12-26 | 2018-05-22 | 上海振大电器成套有限公司 | A kind of master row insulating layer manufacturing method thereof |
| CN109622312A (en) * | 2019-01-18 | 2019-04-16 | 巨力自动化设备（浙江）有限公司 | Special-shaped line coats assembly line |
| CN109622312B (en) * | 2019-01-18 | 2023-12-12 | 巨力自动化设备（浙江）有限公司 | Special-shaped wire coating assembly line |
| CN110311083A (en) * | 2019-07-24 | 2019-10-08 | 宁波市叶兴汽车零部件有限公司 | Vehicular battery connector processing technology |
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