CN101333642A - Band steel filming method and system thereof - Google Patents
Band steel filming method and system thereof Download PDFInfo
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- CN101333642A CN101333642A CNA200710043177XA CN200710043177A CN101333642A CN 101333642 A CN101333642 A CN 101333642A CN A200710043177X A CNA200710043177X A CN A200710043177XA CN 200710043177 A CN200710043177 A CN 200710043177A CN 101333642 A CN101333642 A CN 101333642A
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Abstract
The invention provides a film-coating method of strip steel, mainly comprising: a) strip steel is uncoiled and then sent into a plasma environment for such pre-treatments as surface cleaning and surface activation; and b) the pretreated strip steel is sent into a vacuum film-coating unit which adopts a process of physical vapor deposition to realize film coating. In addition, the invention also provides a corresponding film-coating system of strip steel. The film-coating method and the system can achieve an environment-friendly production technique, without discharge of waste water, waste acid or waste alkali throughout the entire production process; the entire line is compact in technique, the pre-treatment and the film-coating units only need one second to one third of the space required by traditional plating or hot dipping.
Description
Technical field
The present invention relates to realize method with the steel coating process, and the band steel coating system that uses this method.
Background technology
Common band steel coating process all needs chemical pre-treating technology as zinc-plated, color coating etc.Feature of environmental protection band steel is handled and coating process can be that of process for producing steel and iron researches and develops emphasis from now on.The chemistry pre-treatment is usually directed to acid, alkali and waste water etc., and the feature of environmental protection is poor, and the requisite space of operation is very big
Steel plate with excellent surface performance is the critical material of automobile, building and household electric appliances.
Existing band steel coating technique mainly comprises coating process such as pot galvanize, electro-galvanizing, eleetrotinplate, color coating.Usually also comprise pre-process and post-process operations such as chemical pre-treatment and phosphatization, passivation, the plated film of anti-the fingerprint.The main purpose of chemistry pretreatment procedure is to remove grease, impurity and the surface scale etc. that former process is brought, provide coated surface fresh, cleaning to filming process, usually use soda acid to handle, difference according to strip speed, usually need the length about 30-40 rice, requisite space is bigger; Film coating unit also needs tens meters distance usually; Generally speaking, all about 200 meters, required space is bigger for the length of existing coating process whole piece unit.Angle from environmental protection, existing chemical pre-treatment, coating process, aftertreatment technology all relate to the processing of soda acid, waste water, though the recycle by soda acid, the discharging that reduces waste water reduce the influence to environment, can not fundamentally solve the problem of environmental protection.
In the last few years, market constantly increased the demand with better surface property steel plate, and simultaneously, the user also gets over Gao Yuegao to the performance requriements of coated layer product.The user wishes that the coated layer product can not only satisfy corrosion-resistant, environmental protection consistency, good workability and surface optical performance, can also have performances such as ornamental, anti-scribbling property, fingerprint easy to clean, wear-resistant, anti-, sound insulation, anti-zoned trace; The customer requirements coated layer is more and more thinner, and over-all properties is become better and better.Traditional phosphatization, chromaking, plating and hot dip technology come to the ripening period through years development, and owing to its inherent limitation, the space of future development is limited simultaneously.Such as plating on the material, the hot dip technology only is limited to low melting point metal, electroplates and only limits to water-soluble system, is difficult to prepare multi-functional steel plate coated layer product, and environment is all had certain influence.Meanwhile, every profession and trade increases day by day to environmental requirement, requires to remove Cr, Pb, harmful elements such as Cd, Hg such as household electrical appliances and automobile industry, to satisfy industry standard.Intense market competition requires steel plate coated layer user to reduce the energy consumption of industrial production line, the utilization ratio of raising material, reduces significantly and realizes that the required cost of individual event function, above-mentioned requirements are difficult to realize by the optimization transformation of conventional production lines.
Therefore, the space greatly, not environmental protection, function singleness be the subject matter that is faced with the steel coating process at present.
Plasma treatment process is considered to a kind of treatment process of environmental protection, such as glow discharge.In order to take place and to keep aura, need certain electrode voltage, and keep certain vacuum tightness.Vacuum obtains to need certain waiting time, and vacuum is stable needing manually to be kept or complicated automatically Controlling System, its equipment and operation and maintenance cost costliness.Especially must keep constant vacuum tightness for glow discharge, because cleaning performance depends on pressure to a great extent.If plasma energy is finished band steel clean surface and activatory work under the normal pressure, will reduce cost significantly.Industrial, atmospheric plasma technology is generally used for surface active, produces ozone and the loading of particulate electric charge, but also can be used as cleaning surfaces, functionalized surface instrument.The atmospheric dielectric discharge can be carried out meticulous cleaning to surface of steel plate, such as removing surperficial organic pollutant, also can be used as the activation step of bottom operation simultaneously.
Vacuum plating has obtained using widely in industries such as electronics, glass, plastics as surface modification and coating process.The vacuum coating technology major advantage is its environmental protection, good film performance and the diversity that can plate material.Can be used as environmental protection, the multifunction craft of band steel plated film, carried out a lot of research and development, adopt traditional chemical pre-treatment [1,2] mostly, the pre-treatment section is very long, though the very environmental protection of vacuum plating section, pre-treatment does not realize environmental protection concept.
Below be the reference of related art, be incorporated herein by reference.
1.Kagechika，H.and?H.Kibe，NIPPON?KOKAN?KK?<NKK>，CORROSION-RESISTING?PLATED?STEEL?SHEET，JP：62109966，1987
2.Isaki，T.and?M.Yoshida，NIPPON?STEEL?CORP，ZINC?ALLOYPLATED?STEEL?SHEET?EXCELLENT?IN?PLATING?ADHESION?ANDCORROSION?RESISTANCE，JP：7003436，1995
Summary of the invention
The object of the present invention is to provide a kind of environmental protection, compactness, multi-functional band steel film coating method.This method combines atmospheric plasma pre-treatment and vacuum plating, can significantly reduce the length of process section, improves environmental protection and handiness.Can not only realize the chemical pre-treatment of environmental protection, environmental protection and multi-functional coating process, the length of sliver is controlled in 100 meters simultaneously.
The present invention proposes to adopt the normal pressure vacuum plasma to handle as band steel film plating pretreatment process, adopts the PVD technology as band steel coating process, realizes environmental protection, compactness and multifunctional type coating process.This processing step is as follows:
The first step: after the uncoiling of band steel, enter and carry out surface cleaning and surface active in the atmospheric plasma environment.Produce the combination that isoionic gas can be oxygen, nitrogen, hydrogen, argon gas or these several gases.
Second step: by vacuum tunnel or other vacuum seals, enter the vacuum plating unit, adopt physical vapor deposition (PVD) technology to realize plated film.By vacuum tunnel, leave vacuum chamber, closed-book then.
Can be implemented on carbon steel (comprising galvanized sheet), stainless steel plate, the organic coating metal sheet by above-mentioned two steps and to realize environmental protection, multifunctional film-coating, sliver is compact, and length is controlled in 100 meters.
Feature, key content in each step are described below:
In the first step, can select for use DBD (the medium layer barrier discharge is also become corona discharge) as the atmospheric plasma pre-treating technology.Between two electrodes, add alternating-current, dielectric layer or insulating layer blocks electric current, will produce dielectric discharge.Medium discharge is made up of the thread discharge in a certain amount of life-span very short (about 10ns) usually.Average gas temperature rise is particularly useful for handling some thermally sensitive substrates between the several years.By the control process processing parameter, realize even, high speed surface treatment, can need tradition the chemical pre-treating technology of 30-40 rice to reduce to about 10 meters.
In the dielectric discharge process, the impurity of accumulation can the UV irradiation by discharge generation carry out photochemical reaction and decomposes and remove on the surface, the perhaps plasma chemical reaction carried out of the plasma particle that produces by dielectric layer.According to the difference of dielectric layer design, can carry out plasma chemical reaction and UV photochemical reaction simultaneously.
The superiority of dielectric discharge system is: 1. can move in the scope of maximum 10bar, promptly can under atmospheric pressure carry out.Cleaning process can be when vacuumizing, and enough high to keep discharge (greater than 0.5mbar) up to vacuum tightness, the required time of cleaning process and coating process shortens like this.Time shortens about 25-30%.Simultaneously do not need extra vacuum chamber, thereby economy improves.The gas that decomposites is drawn out of, and prevents to turn back to the substrate surface after the cleaning.
In second step:
Physical vapor deposition has can select multiple different type for use, as thermal evaporation, magnetron sputtering, electron beam evaporation etc., in order to improve bonding force and film quality, can strengthen equipment by simultaneously integrated plasma.
Thermal evaporation is to utilize certain heating technique that coating material is heated, and produces steam, is ejected into matrix surface by narrow slit, the deposition film forming.Thermal evaporation technology is applicable to low melting point metal, is controlled by temperature as heating systems such as zinc, magnesium, thereby keeps stable status, guarantees continuous, stable plated film condition in depositing time.By the optimization design of jet orifice and crucible, guarantee in the thickness of coating error on the strip width in tolerance band.
Magnetron sputtering is to use the ion bombardment target material surface, and the atomic deposition that sputters is to the matrix surface film forming.If only contain rare gas element in the gas phase, as argon etc., the come out composition of film of deposition is identical with the composition of target.By introducing other reactant gases, can generate the film of various compositions.Such as, introduce oxygen, can form various oxide compounds.The weave construction of film depends on the processing parameter of process to a great extent, as target, and gas phase composition and pressure process etc.The magnetron sputtering film device mainly is made up of target and field system.
Because electron beam evaporation can evaporate low-melting metal of various height and oxide compound at a high speed, therefore just at first be elected to be the continuous belt steel coating process by Japan as far back as the eighties.But because the limitation of restriction of electron beam gun at that time and research and development target does not realize large-scale industrial production.Along with the development of electron beam gun technology, electron beam evaporation at present can the various films of high speed deposition.
In the electron beam evaporation process, electron beam direct is got to and is evaporated on the material, produces certain vapour pressure, makes it to deposit on the substrate.Electron beam evaporation is particularly useful for coating high-melting point metal and oxide compound.Under the bombardment of high beam energy, can carry out the high speed plated film, also be decomposed but be evaporated material simultaneously, need be in gas phase recombine, therefore need be optimized choice at a high speed and between coating structure.The best way makes the introducing ion source, makes the structure that is evaporated material more stable in gas phase.Plasma can improve the reactivity of reactant gases, accelerates the atom polyreaction in the electron beam evaporation gas phase, makes the structure of film more stable.Its rate of ionization reaches about 60%, and plasma zone overlaps with the electron beam evaporation district simultaneously, does not change original gas distribution.
Though these several continuous belt steel physical gas phase deposition technologies can respectively have relative merits being with deposit film on the steel.From deposition material, thermal evaporation is sprayed and can only be deposited low melting point metal, and other three kinds can metal refining and oxide compound.Consider that from the thickness of deposit film magnetron sputtering only is suitable for depositing thin film, but the homogeneity of film is all relative with surface quality better, other three kinds can the thicker film of high speed deposition, and film quality is relatively poor relatively.From recovery rate, the recovery rate of thermal evaporation can reach 100%, and the recovery rate of electron beam evaporation is up to 80% at present.
Can combine several technique for vacuum coating, the relative merits permutation and combination according to different vacuum coating technologies is used for depositing laminated film, thereby realizes multifunctional film-coating.
Be further to improve the performance of plated film, can be after film coating unit, heat or cool off.
The operating rate of ideal substrate (volume) is between 10 to 200 meters/minute.
The vacuum ranges of plated film part is 1 * 10
-7To 1 * 10
-1Between the Pa.
The length of plated film section is about 40-50 rice.
Product of the present invention can comprise: to the surface optimization of existing hot dip, plated item, the alloy such as deposition tens nanometers carries out modification; Exploitation is used for the use of extreme environment than the better coating product of currently available products performance.As the anti-corrosion product of height; The process of surface treatment of new generation of environmental protection is as using plating SiO
2Replace phosphatization, passivation, carry out organic roller coat then; Brand-new multi-functional coating product.As composite deposite etc.
The application of these products mainly contains industries such as automobile, household electrical appliances, building, photovoltaic, chemistry.
The present invention can realize the production technique of environmental protection, does not have the discharging of waste water, spent acid, salkali waste in the whole process of production; Sliver technology compactness, pre-treatment and film coating unit only need the space requirement of tradition plating, the about 1/2-1/3 of hot dip; The present invention can realize metal, nonmetal, and the plated film product of oxide compound, nitride etc., and handiness is strong.
Embodiment
Further specify the present invention below by embodiment, but these embodiment do not constitute any restriction to the present invention.
Embodiment 1
Realize that with the DBD-PVD thermal evaporation cold-reduced sheet is zinc-plated
In this example, use DBD-PVD thermal evaporation technology on cold-reduced sheet, to realize zinc-plated.
In the DBD section, under normal pressure, feed 80sccm oxygen, energising produces plasma, and cold-reduced sheet enters in the activation section, passes through with 100 meters/minute, to deoiling and clean and activate in the surface.
In thermal evaporation PVD technology, by induction heating, the zinc ingot metal that is placed in the crucible is melted, evaporation, the narrow slit through in the face of steel plate deposits on the steel plate.After the band steel leaves vacuum environment, carry out 500 degree induction heating and insulation and handle, form galvanized sheet, coating film thickness is at 3 microns.
The band steel moves with 100 meters/minute speed.
Wherein the DBD section is about 9 meters, and the plated film section is about 30 meters, about 10 meters of heating zone.The length of sliver is about 80 meters.
Embodiment 2
Realize stainless steel plating Ti with the DBD-magnetron sputtering
In this example, use the DBD-magnetron sputtering on stainless steel plate, to realize plating Ti.
In the DBD section, under normal pressure, feed 80sccm oxygen, energising produces plasma, and stainless steel enters in the activation section, passes through with 100 meters/minute, to deoiling and clean and activate in the surface.
In the magnetron sputtering plating section, select the Ti target for use, feed argon gas, under the normal atmosphere of 10-4mbar, carry out plated film.Coating film thickness is in 500 nanometers.
The band steel moves with 120 meters/minute speed.
Wherein the DBD section is about 9 meters, and the plated film section is about 30 meters.The length of sliver is about 60 meters.
Embodiment 3
Realize stainless steel plating TiO with DBD-magnetron sputtering-electron beam evaporation
2+ SiO
2Laminated film.
In this example, use DBD-magnetron sputtering-electron beam evaporation on stainless steel plate, to realize plating TiO2+SiO2 laminated film.
In the DBD section, under normal pressure, feed 80sccm oxygen, energising produces plasma, and stainless steel enters in the activation section, passes through with 100 meters/minute, to deoiling and clean and activate in the surface.
In the magnetron sputtering plating section, select TiO for use
2Target feeds argon gas, carries out plated film under the normal atmosphere of 10-4mbar.Coating film thickness is in 500 nanometers.In order further to improve the solidity to corrosion and the stability of plated film, need plate one deck SiO again
2Film.
Using the 60kV electron beam gun, under the 10-4mbar normal atmosphere, is starting material with the quartz, and heating evaporation feeds 20sccm oxygen then, plating TiO2 plate by the time realize plated film, the thickness of film is in 200 nanometers.
The band steel moves with 120 meters/minute speed.
Wherein the DBD section is about 9 meters, and the plated film section is about 50 meters.The length of sliver is about 85 meters.
Claims (15)
1. a band steel film coating method is characterized in that this method comprises the following steps:
A) after the uncoiling of band steel, enter the pre-treatment of carrying out surface cleaning and surface active in the plasma ambient;
B) the band steel after the pre-treatment enters the vacuum plating unit, adopts physical gas-phase deposition to realize plated film.
2. band steel film coating method according to claim 1, wherein step a) is the atmospheric plasma pre-treating technology, adopts the DBD mode to produce plasma.
3. band steel film coating method according to claim 1 and 2 wherein produces the combination that isoionic gas is oxygen, nitrogen, hydrogen, argon gas or these several gases.
4. band steel film coating method according to claim 1, wherein the physical gas-phase deposition that step b) adopted is selected from one or more in thermal evaporation, magnetron sputtering, the electron beam evaporation.
5. according to claim 1 or 4 described band steel film coating method, wherein said physical gas-phase deposition adopts plasma enhanced mode to carry out.
6. according to claim 1 or 4 described band steel film coating method, wherein the vacuum ranges of the unitary plated film part of vacuum plating is 1 * 10
-7To 1 * 10
-1Between the Pa.
7. according to claim 1 or 2 or 4 described band steel film coating method, wherein the operating rate with strip substrate is controlled between 10 to 200 meters/minute.
8. according to claim 1 or 2 or 4 described band steel film coating method, wherein this method is used to realize the plated film of one or more materials in metal, nonmetal, oxide compound and the nitride.
9. be with the steel coating system for one kind, it is characterized in that this system comprises the following units at least:
A) pretreatment unit, this pretreatment unit can form plasma ambient, and the band steel that enters is wherein carried out surface cleaning and surface active;
B) vacuum plating unit, this vacuum plating unit has vacuum environment, can carry out physical vapor deposition to realize plated film to the band steel that enters wherein.
10. band steel coating system according to claim 9, wherein the plasma ambient that a) forms of pretreatment unit is the atmospheric plasma environment, adopts the DBD mode to produce plasma.
11. according to claim 9 or 10 described band steel coating systems, wherein producing isoionic gas in pretreatment unit is the combination of oxygen, nitrogen, hydrogen, argon gas or these several gases.
12. band steel coating system according to claim 9, wherein vacuum plating unit b) comprise a kind of or plant the Pvd equipment of thermal evaporation, magnetron sputtering, electron-beam evaporation mode arbitrarily.
13. according to claim 9 or 12 described band steel coating systems, wherein said vacuum plating unit b) comprise that also plasma strengthens equipment.
14. according to claim 9 or 12 described band steel coating systems, the unitary length of wherein said vacuum plating is 40-50 rice.
15., also comprise according to claim 9 or 10 or 12 described band steel coating systems:
C) heating and/or cooling unit, this heating and/or cooling unit are used to improve the performance of plated film.
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| CNA200710043177XA CN101333642A (en) | 2007-06-29 | 2007-06-29 | Band steel filming method and system thereof |
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| CNA200710043177XA CN101333642A (en) | 2007-06-29 | 2007-06-29 | Band steel filming method and system thereof |
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Cited By (5)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN106232859A (en) * | 2014-04-17 | 2016-12-14 | 麦格纳国际公司 | Produce the method and system of coated steel parts |
| CN110872681A (en) * | 2018-09-03 | 2020-03-10 | 中国石油化工股份有限公司 | Plasma-assisted oxidation treatment device and use thereof |
| CN113755797A (en) * | 2020-06-02 | 2021-12-07 | 宝山钢铁股份有限公司 | System and method for moving heating and coating Zn layer on surface of strip steel |
| CN113846291A (en) * | 2020-06-28 | 2021-12-28 | 宝山钢铁股份有限公司 | Cleaning, coating and plating combined unit for galvanized steel sheet/coil and production method thereof |
| CN113930738A (en) * | 2020-06-29 | 2022-01-14 | 宝山钢铁股份有限公司 | Metal vapor modulation device for vacuum coating and modulation method thereof |
-
2007
- 2007-06-29 CN CNA200710043177XA patent/CN101333642A/en active Pending
Cited By (10)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN106232859A (en) * | 2014-04-17 | 2016-12-14 | 麦格纳国际公司 | Produce the method and system of coated steel parts |
| EP3132068A1 (en) * | 2014-04-17 | 2017-02-22 | Magna International Inc. | Method and system for producing coated steel components |
| EP3132068A4 (en) * | 2014-04-17 | 2017-05-10 | Magna International Inc. | Method and system for producing coated steel components |
| CN106232859B (en) * | 2014-04-17 | 2020-01-10 | 麦格纳国际公司 | Method and system for producing coated steel components |
| US10648086B2 (en) | 2014-04-17 | 2020-05-12 | Magna International Inc. | Method and system for producing coated steel components |
| CN110872681A (en) * | 2018-09-03 | 2020-03-10 | 中国石油化工股份有限公司 | Plasma-assisted oxidation treatment device and use thereof |
| CN113755797A (en) * | 2020-06-02 | 2021-12-07 | 宝山钢铁股份有限公司 | System and method for moving heating and coating Zn layer on surface of strip steel |
| CN113846291A (en) * | 2020-06-28 | 2021-12-28 | 宝山钢铁股份有限公司 | Cleaning, coating and plating combined unit for galvanized steel sheet/coil and production method thereof |
| CN113930738A (en) * | 2020-06-29 | 2022-01-14 | 宝山钢铁股份有限公司 | Metal vapor modulation device for vacuum coating and modulation method thereof |
| CN113930738B (en) * | 2020-06-29 | 2023-09-12 | 宝山钢铁股份有限公司 | Metal vapor modulation device for vacuum coating and modulation method thereof |
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Open date: 20081231 |