CN103418571A - Ultrasonic cleaning device and method for surface of metal plate strip - Google Patents
Ultrasonic cleaning device and method for surface of metal plate strip Download PDFInfo
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- CN103418571A CN103418571A CN2012101674394A CN201210167439A CN103418571A CN 103418571 A CN103418571 A CN 103418571A CN 2012101674394 A CN2012101674394 A CN 2012101674394A CN 201210167439 A CN201210167439 A CN 201210167439A CN 103418571 A CN103418571 A CN 103418571A
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Abstract
The invention relates to an ultrasonic cleaning device and method for the surface of a metal plate strip. The device comprises at least one set of prepositioned pretreatment units (2) for pretreatment, such as scale breading and flattening, on upper and lower surfaces of the metal plate strip (71). The device is characterized by further comprising at least one set of ultrasonic cleaning tanks (3), slurries (31) of certain volume are accommodated in the cleaning tanks (3) and are mixed media formed by liquid media and solid particle media, and a plurality of ultrasonic generation sources (32) are mounted on the sides of the cleaning tanks respectively for achieving acceleration of media in the cleaning tanks. By means of the ultrasonic cleaning device and method, the energy-saving and emission-reduction capacity of the metallurgy industry is improved, the quality of the surfaces of cold/hot-rolled metal plate strips is improved, and surface quality defects of the metal plate strips are reduced. The ultrasonic cleaning device and method have broad application prospects in the cold rolling production field.
Description
Technical field
The present invention relates to the cleaning metal surface technical field, particularly, the present invention relates to a kind of cold conditions metal plate and belt surface solid jet descaling device, described cold conditions metal plate and belt surface solid jet descaling device is mainly used in realizing that the positive and negative to the cold conditions metal plate and belt carries out the continuity Ultrasonic Cleaning, the positive and negative that simultaneously guarantees the metal plate and belt after the jet de-scaling is not only fully residual without firecoat, guarantee simultaneously positive and negative can be all the time dry, clean enter next step process section.
Background technology
Metal material can form the fine and close covering that one deck is comprised of metal oxide in hot rolling or heat treatment process on surface, be commonly called as " firecoat ".The existence of this firecoat can cause impact as described below to further processing processing:
Make on the one hand the surface crack of material be difficult for being found in advance, thereby make the finished product processed have quality problems; On the other hand, easily firecoat is pressed into to metal surface, causes surface quality problems.In addition, the existence of hard oxide also can be accelerated the wearing and tearing of roll or drawbench.Therefore entering the front surface of steel plate firecoat removing step of cold-rolling mill is one of operation indispensable on cold rolling product line.
Impact for above-mentioned surperficial firecoat on metal material, the processing mode that manufacturing enterprise all adopts wet chemical to be cleaned is at present both at home and abroad removed the firecoat that adheres on metal plate and belt surface.For steel plate, it adopts the strongly acidic solution of sulfuric acid, hydrochloric acid and hydrofluoric acid usually.The production environment very severe of this wet chemical acid cleaning process, and must carry out the circular regeneration processing to a large amount of residual acid produced because produce, current described circular regeneration technique also certainly leads to corresponding toxic emission, contain a large amount of acidity, corrosivity composition in the waste gas of its discharge, as HCL, SO2 etc., direct atmosphere pollution.
Based on this, clean for solving above-mentioned chemical method the serious problem of environmental pollution brought, researcher has carried out a large amount of research, has developed multiple technologies, removes the firecoat of metal surface to substitute this chemical method.As the electrolysis de-scaling, as described in method comprise, for example, electrolysis is ground and is eliminated squama, electric discharge de-scaling, electron beam de-scaling, laser de-scaling, grinds the descaling method of de-scaling, ball blast de-scaling, alternating bending de-scaling and the combination of above-mentioned distinct methods.Wherein especially with fastest developing speed with the high-pressure spray technique of scale removal, its process of industrialization is also obvious all the more.
Yet this jetting method is because distinctive de-scaling mode, cause the firecoat surface after this method de-scaling also to have following subject matter:
1) because jet directly carries out the de-scaling processing with metal plate, and the plate face is shaken, the inhomogeneous etc. of firecoat tissue all can directly be caused inconsistent to plate face scale removal effect of jet;
2) de-scaling speed is slower, can't realize revolutionary raising;
By consulting Patents, there has been proposed patent or the patent application technology of numerous relevant solid jets, polish-brush technique of scale removal.As Japanese JP06108277A discloses the descaling process that adopts spray acid and brush roll to be used in combination on the continuous cold rolling line, Japan JP55034688A discloses a kind of associating PV rolling scale breading-compound abrasive high-pressure spray de-scaling mode, Japan JP57142710A, JP57068217A, Japan JP59097711A, and Canadian TMW company discloses a series of US20080108281 of the clearance technique for the surface of steel plate firecoat (A1) after calendar year 2001, US20080182486 (A1) and US20090227184 (A1) etc., in addition, as U.S. US5388602, day JP05092231A of the present invention, the patent such as JP09085329A and JP2002102915 or patent application technical scheme, but remain in the part that has much room for improvement aspect the processing validity of the metal plate after processing the jet de-scaling.
In addition, conventional art all only provides pure liquid medium to carry out the surface bombardment, and the cavitation bubble that utilizes neat liquid to produce carries out surface clean, exists efficiency to hang down problem.On the other hand, hyperacoustic sound field can, according to wavelength and frequency and sound field form parameter, can obtain a very strong cavitation zone by debugging.This zone generates bubbles of vacuum by ultrasonic wave because producing the extra-high voltage Reeb, then explosion, and the result of explosion is to form very high explosion pressure and temperature, and liquid is formed to impacting with high pressure.How to utilize the bubbles of vacuum processing generated because producing the extra-high voltage Reeb by ultrasonic wave, the technology that the metal plate after the jet de-scaling is carried out effectively processing has to be developed.
Summary of the invention
For the problems referred to above, the object of the invention is: a kind of ultrasonic cleaning equipment that can realize metal plate and belt is carried out surface clean is provided, hyperacoustic special sound field that adopts this device realizes the medium of the special height position in rinse bath is accelerated, realize shock, grinding between medium and Target Board face, thereby reach the effective cleaning action to the Target Board face, as surperficial de-scaling, except wet goods, realize efficient, green surface clean.
For achieving the above object, a kind of metal plate and belt ultrasonic surface surface cleaning apparatus technical scheme of the present invention is as follows:
A kind of metal plate and belt ultrasonic surface surface cleaning apparatus, comprise at least a set of preposition pretreatment unit 2, for realizing, the upper and lower surface of metal plate and belt 71 carried out to the pretreatment as scale breading, leveling, it is characterized in that,
Described metal plate and belt ultrasonic surface surface cleaning apparatus also comprises that at least one cover is arranged at 1～20 after preposition pretreatment unit 2, and the ultrasonic cleaner 3 of arranged in series, be loaded with slurry 31 in described rinse bath 3, described slurry 31 is to accelerate by liquid medium and ultrasonic wave the blending agent formed with the solid abrasive particle, a plurality of ultrasonic wave generating source 32 are installed on the rinse bath side, for realizing the acceleration of slurry medium described in rinse bath 3.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, it is characterized in that, described ultrasonic cleaner 3 arranges 5-8.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, it is characterized in that,
Under the effect of a plurality of ultrasonic wave generating source 32 that this slurry 31 is installed at rinse bath 3 outer walls, realize the acceleration effect that the medium 32 in the slurry 31 of certain position occurs in small scope, this scope is just in time the actual height position of metal plate and belt 71 in rinse bath 3, the i.e. physical location of metal plate and belt 71 upper and lower surfaces.
Metal plate and belt 71(temperature is not higher than the metal plate and belt of 200 ℃) alter band by roller-way and enter in rinse bath 3, rinse bath 3 is for possessing the grooved container of certain depth and volume, its inside is loaded with slurry 31, described slurry 31 is to accelerate by liquid medium and ultrasonic wave the blending agent formed with the solid abrasive particle, under the effect of a plurality of ultrasonic wave generating source 32 that this slurry 31 is installed at rinse bath 3 outer walls, realize the acceleration effect that the medium 32 in the slurry 31 of certain position occurs in small scope, this scope is just in time the actual height position of metal plate and belt 71 in rinse bath 3, it is the physical location of metal plate and belt 71 upper and lower surfaces, violent shock occurs with metal plate 71 in the medium 32 accelerated under ul-trasonic irradiation, while is in conjunction with the translational speed of metal plate and belt 71, realize carrying out violent ablation between medium 32 and metal plate and belt 71 surfaces, thereby realize the cleaning action on metal plate and belt 71 surfaces.
Rely on the parameter influences such as the material kind of metal plate and belt 71, the surperficial rank requirement that need to clean and metal plate and belt 71 translational speeds, need to be passed to controller 35 by control cables 36 by middle control 34, directly controlled again a plurality of ultrasonic waves 32 generating sources of rinse bath 3 outer walls by holding wire 34 by controller 35, realize the adjustment of supersonic source 32 parameters, can realize effectively cleaning with metal plate and belt 71 surfaces that meet under this technological parameter.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, it is characterized in that, described ultrasonic wave generating source 32 is arranged in bottom surface and the side wall of rinse bath 3, and its ultrasonic frequency is controlled at 50～200KHz.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, it is characterized in that, it is more than 120 orders by the particle size range of solid abrasive particle that described ultrasonic wave accelerates, that is, its particle diameter is at 0.025mm-0.1mm.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, preferably, described ultrasonic wave accelerates to use the particle diameter of solid abrasive particle at 0.025mm-0.06mm.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, preferably, described ultrasonic wave accelerates to use the particle diameter of solid abrasive particle at 0.06mm-0.1mm.
Described slurry medium 32 can specify and be: by two media at least, mixed, a kind of is the tiny abrasive particulate material (ultrasonic wave accelerates to use the solid abrasive particle) of hard, and concrete detailed description the in detail of this particle is to comprise the metal processing ball classes such as natural corundum class abrasive material (as brown corundum, white fused alumina, single alundum etc.), carbide abrasive material (as black silicon carbide, green silicon carbide, boron carbide etc.), shot, steel wire cut pill; A kind of medium is common water for industrial use;
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, it is characterized in that, described ultrasonic wave accelerates concentration with solid abrasive particle and aqueous medium in mass concentration, is the 18%-20% mass percent.
According to a kind of metal plate and belt ultrasonic surface surface cleaning apparatus of the present invention, it is characterized in that, the total power value of the single cell body of described ultrasonic cleaner is not less than 20Kw, and the power number of single supersonic generator is 3-5Kw.
The present invention provides again a kind of metal plate and belt ultrasonic surface method for cleaning surface, and technical scheme is as follows:
A kind of metal plate and belt ultrasonic surface method for cleaning surface, comprise at least a set of preposition pretreatment unit 2, for realizing, the upper and lower surface of metal plate and belt 71 is carried out as scale breading, the pretreatment of leveling, it is characterized in that, described metal plate and belt ultrasonic surface surface cleaning apparatus also comprises that at least one cover is arranged at 1～20 after preposition pretreatment unit 2, and the ultrasonic cleaner 3 of arranged in series, be loaded with slurry 31 in described rinse bath 3, described slurry 31 is to accelerate by liquid medium and ultrasonic wave the blending agent formed with the solid abrasive particle, a plurality of ultrasonic wave generating source 32 are installed on the rinse bath side, for realizing the acceleration of slurry medium described in rinse bath 3.
According to a kind of metal plate and belt ultrasonic surface method for cleaning surface of the present invention, it is characterized in that, described ultrasonic cleaner 3 arranges 5-8.
According to a kind of metal plate and belt ultrasonic surface method for cleaning surface of the present invention, it is characterized in that, described ultrasonic wave generating source 32 is arranged in bottom surface and the side wall of rinse bath 3, and its ultrasonic frequency is controlled at 50～200KHz.
According to a kind of metal plate and belt ultrasonic surface method for cleaning surface of the present invention, it is characterized in that,
Hyperacoustic frequency is selected from one of three frequency ranges:
Low frequency ultrasound cleans (20～50KHz), and high frequency ultrasound is cleaned (50～200KHz) and megahertz ultrasonic cleaning (700KHz～1MHz).
According to a kind of metal plate and belt ultrasonic surface method for cleaning surface of the present invention, it is characterized in that, it is more than 120 orders by the particle size range of solid abrasive particle that described ultrasonic wave accelerates, that is, its particle diameter is at 0.025mm-0.1mm.
According to a kind of metal plate and belt ultrasonic surface method for cleaning surface of the present invention, it is characterized in that, described ultrasonic wave accelerates concentration with solid abrasive particle and aqueous medium in mass concentration, is the 18%-20% mass percent.
According to a kind of metal plate and belt ultrasonic surface method for cleaning surface of the present invention, it is characterized in that, the total power value of the single cell body of described ultrasonic cleaner is not less than 20Kw, and the power number of single supersonic generator is preferably 3-5Kw.
Hyperacoustic sound field can, according to wavelength and frequency and sound field form parameter, can obtain a very strong cavitation zone by debugging.This zone generates bubbles of vacuum by ultrasonic wave because producing the extra-high voltage Reeb, then explosion, and the result of explosion is to form very high explosion pressure and temperature, and liquid is formed to impacting with high pressure.Conventional art all only provides pure liquid medium to carry out the surface bombardment, and the cavitation bubble that utilizes neat liquid to produce carries out surface clean, yet this mode efficiency is low.
The particle size range that the present invention adopts ultrasonic wave to accelerate abrasive grain is generally the above solid particulate matter of 120 orders, its particle size range is no more than the particle diameter level of 0.1mm usually, preferably in the particle diameter level of 0.025mm, the density of this solid particulate matter is directly related with abrasive species, if highdensity metal abrasives, required granular level is less, if low-density common tribolite, required granular level is slightly large; The concentration of abrasive material and water, in mass concentration, is preferably the 16-20% mass percent.
For guaranteeing the operation of continous way surface clean, need the ultrasonic cleaner arranged to be necessary for a plurality of grooves (cell body quantity is generally 1～20), and on arranged in series and product line, allow metal plate and belt get final product by these rinse baths successively, the total power value of single cell body is not less than 20Kw, and the power number of single supersonic generator is preferably 3-5Kw.
Hyperacoustic frequency and power relation are close.Frequency is higher, and the power needed is larger, just favourable dry cleaning action.The operating frequency of supersonic wave cleaning machine, according to cleaning object, roughly is divided into three frequency ranges at present; Low frequency ultrasound cleans (20～50KHz), and high frequency ultrasound is cleaned (50～200KHz) and megahertz ultrasonic cleaning (more than 700KHz～1MHz).The particle of different sizes on ultrasonic wave energy cleaning workpiece under each frequency.The dirt of the corresponding larger particles of common low frequency, high-frequency energy is washed micron-sized dirt off, and million can wash the dirt of micron, submicron order frequently.For the granularity requirements of the abrasive grain of acceleration required for the present invention, set of frequency is lower, usually remains on the 40-100KHz level.
According to the present invention, by add hard composition granule tiny and that certain mass is arranged in liquid after, these hard composition granules can directly be accelerated by liquid in ultrasonic wave cumulative zone, thereby by the acceleration of these hard composition granules, metal surface are clashed into, thereby realize surface clean.Implementation of the present invention and traditional Ultrasonic Cleaning mode have essential distinction, and difference is exactly: tradition is the neat liquid medium, and the mixture that the present invention is liquid and tiny hard composition granule, be solid liquid media.The present invention, for substituting the continuous de-scaling pickling of existing metal plate and belt cold conditions unit, to meet modern continuous formula cold conditions metal plate and belt high speed, continuity Characteristics, does not affect original production capacity of producing line.
Its agent set is referring to shown in Fig. 1～Fig. 3.
The accompanying drawing explanation
Fig. 1 is novel surface cleaning device schematic diagram;
Fig. 2 embodiment mono-schematic diagram;
Fig. 3 embodiment bis-schematic diagrames.
In figure, the pretreatment section of 1 preliminary processes section, 2 metal plate and belts, 3 Ultrasonic Cleaning sections, 4 rearmounted processing sections, 5 intermediate treatment sections, 71 are cleaned front metal plate and belt, 72 and are cleaned control (device), 35 controllers, 36 control cables in rear metal plate and belt, 31 slurries, 32 ultrasonic wave generating source, 33 signal transmssion lines, 34.
The specific embodiment
As mentioned above, metal plate and belt cleaning of the present invention specifically as shown in FIG. 1 to 3, has good effect for guaranteeing process of the present invention, and it mainly adopts following measure:
1) adopt hyperacoustic special sound field reflecting, realize the removing of metal plate and belt surface attachments, possess the characteristics of environment-friendly high-efficiency;
2) hyperacoustic accelerating medium adopts the slurry that is mixed with finite concentration hard particles thing (ultrasonic wave accelerates to use the solid abrasive particle), under hyperacoustic sound field reflecting, realize acceleration, the shock Target Board face of medium in slurry, thereby realize surface clean effect more efficiently.
The present invention be take the continuity de-scaling of cold conditions steel plate and is embodiment, specific as follows:
Embodiment mono-: with reference to Fig. 2, the band steel 70 alter the band enter preposition pretreating process section 2 by preliminary processes section 1, this process section realizes being with steel 70 upper and lower surface firecoats evenly to break by the mode of tension straingtening, plate shape with steel 70 is corrected simultaneously, band steel 71 after so processing enters ultrasonic cleaning process section 3 again, by the ultrasonic surface cleaning action, the firecoat that realization has been broken with steel 71 surfaces, attachment etc. are effectively removed, band steel 72 after so processing can enter next process section 4, such as surface washing, purging and coating, rolling etc. continuously.
Embodiment bis-: with reference to Fig. 3, the band steel 70 alter the band enter preposition pretreating process section 2 by preliminary processes section 1, this process section 2 realizes being with steel 70 upper and lower surface firecoats evenly to break by the mode of tension straingtening, plate shape with steel 70 is corrected simultaneously, band steel 71 after so processing enters intermediate treatment section 5 again, this processing section can be the ball blast mode, the firecoat that realization has been broken with steel 71 surfaces is further removed, realization is removed with steel 71 firecoats of surface more than 80%, now the band steel 73 after de-scaling enters ultrasonic cleaning process section 3 again, by the ultrasonic surface cleaning action, realization is with the steel 73 remaining firecoats in surface, attachments etc. are effectively removed, band steel 72 after so processing can enter next process section 4 continuously, for example surface washing, purge and coating, rolling etc.
The above specific embodiment of having described patent of the present invention by means of specific embodiment; but it should be understood that; here concrete description should not be construed as the restriction to the spirit and scope of the invention; this invention is not only applicable to the continuous de-scaling of metal plate and belt and processes; equally also can apply in the continuous de-scaling of metal strip thing, tubular metal thing, metal club; all these one of ordinary skilled in the art, reading the various modifications of after this specification, above-described embodiment being made, belong to the scope that the present invention protects.
The synergy that the present invention takes full advantage of ultrasonic wave and slurry blending agent has realized the high-efficiency washing processing is carried out in cold conditions metal plate surface.Because institute of the present invention employing technology is ripe, can implement, apply feasible.On the other hand, the present invention can well adapt to company to the environmental requirement of metallurgical production and the further requirement of improving product competitiveness, improves the ability of the energy-saving and emission-reduction of smelter.Therefore, the present invention has broad application prospects at cold rolling production field.
Claims (11)
1. a metal plate and belt ultrasonic surface surface cleaning apparatus, comprise at least a set of preposition pretreatment unit (2), for realizing, the upper and lower surface of metal plate and belt (71) is carried out as scale breading, the pretreatment of leveling, it is characterized in that, described metal plate and belt ultrasonic surface surface cleaning apparatus also comprises that at least one cover is arranged at afterwards 1～20 of preposition pretreatment unit (2), and the ultrasonic cleaner of arranged in series (3), be loaded with slurry (31) in described rinse bath (3), described slurry (31) is to accelerate by liquid medium and ultrasonic wave the blending agent formed with the solid abrasive particle, a plurality of ultrasonic wave generating source (32) are installed on the rinse bath side, for realizing the acceleration of slurry medium described in rinse bath (3).
2. a kind of metal plate and belt ultrasonic surface surface cleaning apparatus as claimed in claim 1, is characterized in that, described ultrasonic wave generating source (32) is arranged in bottom surface and the side wall of rinse bath (3), and its ultrasonic frequency is controlled at 50～200KHz.
3. a kind of metal plate and belt ultrasonic surface surface cleaning apparatus as claimed in claim 1, is characterized in that, it is more than 120 orders by the particle size range of solid abrasive particle that described ultrasonic wave accelerates, that is, its particle diameter is at 0.025mm-0.1mm.
4. a kind of metal plate and belt ultrasonic surface surface cleaning apparatus as claimed in claim 1, is characterized in that, described ultrasonic wave accelerates concentration with solid abrasive particle and aqueous medium in mass concentration, is the 18%-20% mass percent.
5. a kind of metal plate and belt ultrasonic surface surface cleaning apparatus as claimed in claim 1, is characterized in that, the total power value of the single cell body of described ultrasonic cleaner is not less than 20Kw, and the power number of single supersonic generator is 3-5Kw.
6. a metal plate and belt ultrasonic surface method for cleaning surface,
Use at least a set of preposition pretreatment unit (2), for realizing, the upper and lower surface of metal plate and belt (71) is carried out as scale breading, the pretreatment of leveling, it is characterized in that, described metal plate and belt ultrasonic surface surface cleaning apparatus also comprises that at least one cover is arranged at afterwards 1～20 of preposition pretreatment unit (2), and the ultrasonic cleaner of arranged in series (3), be loaded with slurry (31) in described rinse bath (3), described slurry (31) is to accelerate by liquid medium and ultrasonic wave the blending agent formed with the solid abrasive particle, a plurality of ultrasonic wave generating source (32) are installed on the rinse bath side, for realizing the acceleration of slurry medium described in rinse bath (3).
7. a kind of metal plate and belt ultrasonic surface method for cleaning surface as claimed in claim 6, is characterized in that, described ultrasonic wave generating source (32) is arranged in bottom surface and the side wall of rinse bath (3), and its ultrasonic frequency is controlled at 50～200KHz.
8. a kind of metal plate and belt ultrasonic surface method for cleaning surface as claimed in claim 6, is characterized in that, it is more than 120 orders by the particle size range of solid abrasive particle that described ultrasonic wave accelerates, that is, its particle diameter is at 0.025mm-0.1mm.
9. a kind of metal plate and belt ultrasonic surface method for cleaning surface as claimed in claim 6, is characterized in that, described ultrasonic wave accelerates concentration with solid abrasive particle and aqueous medium in mass concentration, is the 18%-20% mass percent.
10. a kind of metal plate and belt ultrasonic surface method for cleaning surface as claimed in claim 6, is characterized in that,
Hyperacoustic frequency is selected from one of three frequency ranges:
Low frequency ultrasound cleans: 20～50KHz,
High frequency ultrasound is cleaned: 50～200KHz, and
More than megahertz ultrasonic cleaning 700KHz～1MHz.
11. a kind of metal plate and belt ultrasonic surface method for cleaning surface, is characterized in that as claimed in claim 6, the total power value of the single cell body of described ultrasonic cleaner is not less than 20Kw, and the power number of single supersonic generator is preferably 3-5Kw.
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Cited By (5)
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| CN106513061A (en) * | 2017-01-03 | 2017-03-22 | 大唐南京环保科技有限责任公司 | Ultrasonic cleaning device and method for deactivated denitration catalyst |
| CN106766696A (en) * | 2017-03-21 | 2017-05-31 | 安徽众源新材料股份有限公司 | Band on-line cleaning equipment |
| CN108247503A (en) * | 2018-03-21 | 2018-07-06 | 张家港市瑞特金属材料有限公司 | Steel wire derusting apparatus and derusting system |
| CN110013997A (en) * | 2019-05-28 | 2019-07-16 | 嘉兴远信五金科技股份有限公司 | A kind of nut automatic cleaning equipment |
| CN111230749A (en) * | 2020-01-22 | 2020-06-05 | 辽宁科技大学 | Metal strip surface descaling device and method |
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Application publication date: 20131204 |