CN103406249A - Technology method for coating insulating paint on surface of extremely thin orientated silicon steel strip - Google Patents
Technology method for coating insulating paint on surface of extremely thin orientated silicon steel strip Download PDFInfo
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- CN103406249A CN103406249A CN2013101855248A CN201310185524A CN103406249A CN 103406249 A CN103406249 A CN 103406249A CN 2013101855248 A CN2013101855248 A CN 2013101855248A CN 201310185524 A CN201310185524 A CN 201310185524A CN 103406249 A CN103406249 A CN 103406249A
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Abstract
The invention discloses a technology method for coating insulating paint on the surface of an extremely thin orientated silicon steel strip. According to the technology method, after heat treatment, the extremely thin orientated steel strip is uncoiled at a speed V and enters an insulating paint groove containing the insulating paint through a front guide roll, and the temperature of the insulating paint is 37DEG C+/-1DEG C. Then, the oriented silicon steel strip is separated upward from the liquid level of the insulating paint through a lower guide roll and perpendicular to the ground, and after the orientated silicon steel strip advances for distance L, the liquid state insulating paint attached to the surface of the orientated silicon steel strip forms a smooth paint layer under the action of own tension. Then, the orientated silicon steel strip enters a drying device at the speed V and is dried at 350DEG C for 3-5seconds, and a solid state paint layer with the controllable thickness from 0.0025mm to 0.013mm is formed under the action of variables of the pulling speed V, viscosity P of the insulation paint and the distance L. Therefore, the extremely thin orientated silicon steel strip is thin and even in pain layer, uniform in thickness, smooth, controllable, easy to operate, high in qualified rate and low in manufacturing cost. Layer resistance is larger than 1016 ohms, and the roughness is 0.4.
Description
Technical field
The present invention relates to dip-coating and lift technology and at orientation silicon steel belt surface as thin as a wafer, be coated with the process of insulated paint, be applied to oriented silicon steel band surface insulation as thin as a wafer and process, function of dominant magnetic soft magnetic materials electrical sheet field.
Background technology
Current orientation silicon steel as thin as a wafer, for the manufacture of the iron core operating frequency be greater than 400 hertz, it is the indispensable magnetically soft alloy of electric power, electronics industry, it is also a kind of important Metallic Functional Materials, oriented silicon steel band is that in metallurgic product, production difficulty is larger as thin as a wafer, with high content of technology, the product of complex manufacturing.Oriented silicon steel band is the tradition directed silicon strip to be coated with to insulated paint again make after cold rolling and annealing as thin as a wafer.Be mainly used in the transformer of doing high frequency transformer, large power, electrically magnetic amplifier, pulse transformer, impulse generator, choke coil, inductance, storage and memory cell and working under vibration and radiation condition.In above element as thin as a wafer oriented silicon steel band mainly with making iron core, exist.The multilayer of iron core and as thin as a wafer between the oriented silicon steel band lamination between resistance quality and lamination air gap how many, by core loss value, affect the element result of use.
Oriented silicon steel band is on-insulated before not being coated with insulated paint as thin as a wafer, and on-insulated oriented silicon steel band as thin as a wafer can not be used to make iron core.The orientation silicon steel belt surface makes orientation silicon steel surface as thin as a wafer form the insulating barrier that enamelled coating is less than 0.005mm after being coated with insulated paint after oven dry, sintering, can reach the requirement of manufacturing iron core interlayer laminated insulation.The thick lamination coefficient of making iron core that is coated with of oriented silicon steel band insulation enamelled coating is low as thin as a wafer.What be coated with is excessively thin, and between core lamination stack, resistance does not reach requirement.Coating layer thickness is inhomogeneous, affects again the integrated iron core function, the out-of-flatness of painting, and roughness is greater than 1.6, and the core lamination stack air gap is large, increases the iron core air gap loss, and the iron core total losses are increased.Therefore with rolling method, can't reach the insulated paint layer thickness is the 3-6% after being with, and smooth, smooth, rough rugosity does not reach and is less than 0.8, and only roller circular runout 1%mm also is far longer than 1um.
Summary of the invention
For the above-mentioned defect existed in prior art, the invention provides dip-coating and lift technology and at orientation silicon steel belt surface as thin as a wafer, be coated with the process of insulated paint.Adopted dip-coating to lift technology, made as thin as a wafer that orientation silicon steel carries product enamelled coating is thin, even, consistency of thickness, smooth, smooth, controlled, simple to operate, product percent of pass is high, low cost of manufacture.Interface resistance all is greater than 1016 Ω m, and roughness is 0.4.
The present invention is achieved through the following technical solutions;
A kind of oriented silicon steel band as thin as a wafer is coated with the process of insulated paint, oriented silicon steel band as thin as a wafer (12) after Overheating Treatment is with the open volume of speed V, the premenstrual guide roller of oriented silicon steel band (12) (2) enters in the insulation paint bath (5) that fills insulated paint (4), and temperature of insulating paint is 37 ℃ ± 1 ℃.Through lower steering roll (3) vertical ground, upwards break away from the insulated paint liquid level again, after the L distance of advancing, the liquid insulated paint that the oriented silicon steel band appearance is adhered to forms smooth enamelled coating under self tension force effect.Then still with speed V, enter in drying unit (6), the 350 ℃ of oven dry time of carrying out 3--5 second, now oriented silicon steel band has formed the solid-state enamelled coating of controllable thickness between 0.0025-0.013mm under pull rate V, insulated paint viscosity P and the effect of distance L variable as thin as a wafer.Through the upper right guide roller of upper left guide roller (7) (8), turn back and enter sintering furnace (9) downwards again, carrying out time 30--50 temperature second is 670 ℃ of sintering.In sintering furnace, be full of+hydrogen of 6Pa protects, and prevents oxidation under high temperature.Oriented silicon steel band as thin as a wafer after sintering was cooled to room temperature through 10 second time again, and the insulation enamelled coating of appearance has been the inorganic ceramic state.Oriented silicon steel band after guide roller (10) later, batches collection by winder (11) again.Make oriented silicon steel band keep speed of service V to be driven by uncoiler (1) and winder (11), the two fast difference must not be greater than 2 ‰.Wherein the bandwidth of orientation silicon steel as thin as a wafer (b) of insulated paint to be coated with is 50-200mm; Thickness (h) is 0.03-0.15mm; Insulated paint viscosity (p) is: 7.8s (37 ℃ ± 1 ℃), and the dip-coating pull rate is 0.5-9.5m/min ± 2 ‰, the insulated paint liquid level is 0.1-2.5m to drying distance;
The present invention is compared with prior art: realized being coated with the interface resistance 1016 Ω m of insulation enamelled coating oriented silicon steel band, the insulation enamelled coating can be controlled between tape thickness (H) 3-7% optional controlled, and surface smoothing, bright and clean, smooth, roughness are 0.4.
The accompanying drawing explanation:
Fig. 1 is process schematic representation of the present invention
Fig. 2 insulated paint fluid temperature and viscosity relationship figure
Fig. 3 steel band pull rate and thickness of paint layer graph of a relation
Fig. 4 insulated paint liquid viscosity and insulated paint layer thickness graph of a relation
Fig. 5 is dried distance and insulated paint layer thickness graph of a relation
The specific embodiment:
Below in conjunction with accompanying drawing, the present invention will be further described;
As Fig. 1, oriented silicon steel band as thin as a wafer (12) after Overheating Treatment with the open volume of speed V, premenstrual guide roller (2) enters and fills insulation paint bath (4) temperature is the paint of 37 ℃ ± 1 ℃, more upwards breaks away from the insulated paint liquid level through lower steering roll (3) vertical ground.The L distance of advancing is carried out 350 ℃, and the time is that 3-5 is dried second.Then with same speed V, turn back and enter in sintering furnace (9) through the upper right guide roller of upper left guide roller (7) (8), carry out 670 ℃ of time 30-50 sintering second.In sintering furnace, be full of+the 6Pa hydrogen shield, prevent that high-temperature oxydation from forming hole in the insulation enamelled coating.After sintering, be the orientation silicon steel belt surface as thin as a wafer that is attached to that ceramic state inorganic insulation layer is firm, level and smooth, bright and clean and form an integral body.
As Fig. 2, control insulated paint fluid viscosity 7.8S;
As Fig. 3, control dip-coating pull rate V, reach 1 * 10
-3Thickness of paint layer;
As Fig. 4, insulated paint liquid, keep 37 ℃ ± 1 ℃ of constant temperature;
As Fig. 5, fine setting, dry distance L and control enamelled coating 1 * 10
-4Thickness of paint layer;
Produce the product continuous uniform oriented silicon steel band as thin as a wafer is coated with to insulated paint level and smooth, bright and clean, roughness 0.4.
When the insulation enamelled coating (H) 0.05 tape thickness 3% the time, i.e. 1.5 * 10mm
-3, interface resistance keeps 1016 Ω m.
Below in conjunction with example, the present invention will be further described.
The oriented silicon steel band as thin as a wafer of insulated paint that the present invention is coated with is through heat treatment, surface does not have the magnesium silicate bottom, painting insulated paint orientation silicon steel bandwidth as thin as a wafer is 100mm, thickness is 0.072mm, temperature of insulating paint is 37 ℃, and insulated paint viscosity is 7.8s, and the dip-coating pull rate is 0.86m/min, the oven dry distance L is 0.5m, and thickness of paint layer is 0.0047mm.
The oriented silicon steel band as thin as a wafer of insulated paint that the present invention is coated with is through heat treatment, surface does not have the magnesium silicate bottom, painting insulated paint orientation silicon steel bandwidth as thin as a wafer is that 150mm, thickness are 0.072mm, temperature of insulating paint is 37 ℃, insulated paint viscosity 7.8s, and the dip-coating pull rate is 6.2m/min, the oven dry distance L is 1.2m, and thickness of paint layer is 0.0043mm.
Insulated paint that the present invention is coated with as thin as a wafer oriented silicon steel band through heat treatment, surface does not have the magnesium silicate bottom, the insulated paint that is coated with as thin as a wafer the orientation silicon steel width be that 150mm, thickness are 0.072mm, 37 ℃ ℃ of temperature of insulating paints, insulated paint viscosity 7.8s, dip-coating pull rate V is 5m/min, and drying distance is 1m, and thickness of paint layer is 0.0039mm.
Claims (6)
- One kind as thin as a wafer the orientation silicon steel belt surface be coated with the process of insulated paint, for after Overheating Treatment, forming or do not form the oriented silicon steel band as thin as a wafer of magnesium silicate bottom, it is characterized in that: oriented silicon steel band, under uncoiler, winder driving effect, will be sent into insulation paint immersion coating in insulated paint Cao (37 ℃ ± 1 ℃) successively along oriented silicon steel band band length direction as thin as a wafer.
- 2. a kind of belt surface of orientation silicon steel as thin as a wafer according to claim 1 is coated with the process of insulated paint, it is characterized in that: the oriented silicon steel band of dip-coating being crossed to insulated paint lifts disengaging insulated paint liquid level perpendicular to ground successively along the band length direction and at the uniform velocity moves upward.
- 3. a kind of belt surface of orientation silicon steel as thin as a wafer according to claim 1 is coated with the process of insulated paint, it is characterized in that: through L, apart from post-drying, after sintering, form the insulation enamelled coating, wherein:(1), the tape thickness of orientation silicon steel as thin as a wafer (h) of insulated paint to be coated with is 0.03～0.15mm;(2), insulated paint viscosity (by GB/T1723-1993) is measured as 7.8 seconds (S), (37 ℃ ± 1 ℃);(3), oriented silicon steel band movement velocity (V) is 0.5-9.5m/min as thin as a wafer;(4), the insulated paint liquid level is 0.1-2.5m to drying distance (L).
- 4. a kind of belt surface of orientation silicon steel as thin as a wafer according to claim 1 is coated with the process of insulated paint.It is characterized in that: at the uniform velocity dip-coating lifts, and speed (V) is at 0.5-9.5m/min, and difference is less than 2 ‰, and the insulated paint fluid temperature is 37 ℃ ± 1 ℃, viscosity 7.8s.
- 5. a kind of belt surface of orientation silicon steel as thin as a wafer according to claim 1 is coated with the process of insulated paint.It is characterized in that: liquid level is to drying distance at 0.1-2.5m.
- 6. a kind of belt surface of orientation silicon steel as thin as a wafer according to claim 1 is coated with the process of insulated paint.It is characterized in that: dip direction vertically upward.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN2013101855248A CN103406249A (en) | 2013-05-20 | 2013-05-20 | Technology method for coating insulating paint on surface of extremely thin orientated silicon steel strip |
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| CN2013101855248A CN103406249A (en) | 2013-05-20 | 2013-05-20 | Technology method for coating insulating paint on surface of extremely thin orientated silicon steel strip |
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Cited By (7)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702358A (en) * | 2015-08-05 | 2017-05-24 | 天津卡斯特机械有限公司 | Excavator crawler belt rust-proof device |
| CN109013253A (en) * | 2018-07-02 | 2018-12-18 | 山西太钢不锈钢股份有限公司 | The production method of electrical sheet self-adhesive coating |
| CN110180976A (en) * | 2019-05-23 | 2019-08-30 | 安徽协同创新设计研究院有限公司 | System is made in iron picture pipeline system component |
| CN110588127A (en) * | 2019-09-26 | 2019-12-20 | 武汉钢铁有限公司 | Method for improving T-shaped peeling strength of oriented silicon steel self-bonding coating |
| CN113755039A (en) * | 2021-07-05 | 2021-12-07 | 华磁(深圳)科技有限责任公司 | Inorganic insulating paint, preparation method thereof and application thereof in ultrathin silicon steel strip |
| CN114914593A (en) * | 2022-02-10 | 2022-08-16 | 中国第一汽车股份有限公司 | Insulated battery coating and battery preparation method |
| CN116099741A (en) * | 2021-11-09 | 2023-05-12 | 北京科益虹源光电技术有限公司 | Insulating coating method and equipment for nanocrystalline magnetic core strip |
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| US3582407A (en) * | 1969-08-18 | 1971-06-01 | Morton Int Inc | Magnesium oxide coating composition and process for producing annealed steel punching stock |
| US3930905A (en) * | 1972-10-26 | 1976-01-06 | Allmanna Svenska Elektriska Aktiebolaget | Method of manufacturing an object of silicon steel |
| US4242155A (en) * | 1978-04-28 | 1980-12-30 | Kawasaki Steel Corporation | Method of forming an insulating film on a grain-oriented silicon steel sheet |
| CN101209440A (en) * | 2006-12-27 | 2008-07-02 | 鞍钢股份有限公司 | Coating method of cold-rolled silicon steel chromium-free insulating coatings, coating rubber roll and coating liquid |
| CN102553797A (en) * | 2012-01-30 | 2012-07-11 | 无锡华精新型材料有限公司 | Coating process of insulated paint on surface of oriented silicon steel strip |
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2013
- 2013-05-20 CN CN2013101855248A patent/CN103406249A/en active Pending
Patent Citations (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| US3582407A (en) * | 1969-08-18 | 1971-06-01 | Morton Int Inc | Magnesium oxide coating composition and process for producing annealed steel punching stock |
| US3930905A (en) * | 1972-10-26 | 1976-01-06 | Allmanna Svenska Elektriska Aktiebolaget | Method of manufacturing an object of silicon steel |
| US4242155A (en) * | 1978-04-28 | 1980-12-30 | Kawasaki Steel Corporation | Method of forming an insulating film on a grain-oriented silicon steel sheet |
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| CN102553797A (en) * | 2012-01-30 | 2012-07-11 | 无锡华精新型材料有限公司 | Coating process of insulated paint on surface of oriented silicon steel strip |
Cited By (9)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106702358A (en) * | 2015-08-05 | 2017-05-24 | 天津卡斯特机械有限公司 | Excavator crawler belt rust-proof device |
| CN109013253A (en) * | 2018-07-02 | 2018-12-18 | 山西太钢不锈钢股份有限公司 | The production method of electrical sheet self-adhesive coating |
| CN109013253B (en) * | 2018-07-02 | 2021-08-03 | 山西太钢不锈钢股份有限公司 | Production method of electrical steel self-bonding coating |
| CN110180976A (en) * | 2019-05-23 | 2019-08-30 | 安徽协同创新设计研究院有限公司 | System is made in iron picture pipeline system component |
| CN110588127A (en) * | 2019-09-26 | 2019-12-20 | 武汉钢铁有限公司 | Method for improving T-shaped peeling strength of oriented silicon steel self-bonding coating |
| CN110588127B (en) * | 2019-09-26 | 2021-11-26 | 武汉钢铁有限公司 | Method for improving T-shaped peeling strength of oriented silicon steel self-bonding coating |
| CN113755039A (en) * | 2021-07-05 | 2021-12-07 | 华磁(深圳)科技有限责任公司 | Inorganic insulating paint, preparation method thereof and application thereof in ultrathin silicon steel strip |
| CN116099741A (en) * | 2021-11-09 | 2023-05-12 | 北京科益虹源光电技术有限公司 | Insulating coating method and equipment for nanocrystalline magnetic core strip |
| CN114914593A (en) * | 2022-02-10 | 2022-08-16 | 中国第一汽车股份有限公司 | Insulated battery coating and battery preparation method |
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Application publication date: 20131127 |