CN100455370C - Leveling machine, black strip acid-free derusting device using the same and method thereof - Google Patents
Leveling machine, black strip acid-free derusting device using the same and method thereof Download PDFInfo
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- CN100455370C CN100455370C CNB2006101250404A CN200610125040A CN100455370C CN 100455370 C CN100455370 C CN 100455370C CN B2006101250404 A CNB2006101250404 A CN B2006101250404A CN 200610125040 A CN200610125040 A CN 200610125040A CN 100455370 C CN100455370 C CN 100455370C
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Abstract
The invention relates to a flattener, relative thermal rolling band steel non-acid scaling device and method, wherein said flattener comprises a roller cleaner (15) whose end contacts the lower roller and compression lower roller (14); the cleaner (15) can clean the ferric oxide in each rotation of roller, to improve work efficiency. And the scaling device comprises emulsion feeder (1), flattener (2), high-pressure water injector (3), iron brush (4), washing drier (5), and coiling machine (6). The invention can improve the service life and effect of iron brush. And the method comprises that adjusting the injected amount of emulsion to adjust the scaling quality and save cost.
Description
Technical field
The present invention relates to the planisher that uses in a kind of hot-strip rust cleaning process and a kind of anacidity derusting device that uses this planisher.
Background technology
In order to guarantee the surface quality of cold-strip steel, cold rolling preceding must the removing to the iron scale on hot-strip supplied materials surface.At present, the main method of hot-rolled sheet strip steel scale on surface is removed by iron and steel enterprise and steel processing enterprise, is to adopt sulfuric acid or hydrochloric acid to carry out pickling, by acid solution iron scale is dissolved, to reach the purpose of rust cleaning.The bending pickling again of peeling off is generally adopted in the rust cleaning of ordinary steel, and used medium is sulfuric acid or hydrochloric acid; Stainless rust cleaning generally adopts hydrofluoric acid to add the method for nitric acid dissolve scale on surface; The method of pickling is more then mainly adopted behind the surface sand-blasting in the rust cleaning of silicon steel.Someone test with the steel sand that suspends spray strip steel surface or in neutral solution the method for electrolysis eliminate rust, but these two kinds of methods are still under test.
Analysis-by-synthesis, more than these several rust cleaning technology all exist some problems, the shortcoming of conventional pickling technology maximum is exactly that acid solution causes environmental pollution easily, the recycling operation of pickle is numerous and diverse, and acid cleaning process long flow path, floor space are big; Adopt the steel sand that suspends to spray strip steel surface, make the slab belt surface pit occur easily, and the rust cleaning rate is lower, strip steel surface quality is descended; Adopt the method for neutral solution electrolysis, also relate to problems such as the pollution of electrolyte and recycling, and present derusting device also all is an acid dip pickle, method for the anacidity rust cleaning, existing apparatus can't use, people are at the device and method of attempting to seek a kind of anacidity rust cleaning, to solve the negative effect that pickling brings at present.
Chinese patent ZL02137851.7 discloses the processing method and the isolated plant thereof on a kind of hot-strip surface, be used to remove the hot-strip scale on surface, its key step comprises that band steel loose rind part (makes the flexural deformation of band steel by depress roller and carrying roller, the physical arrangement of destruction iron scale), belt steel flating partly, upward lower plane wire brush dish iron scale is cleaned part (water quench when cleaning with water), tension strain part with water, before entering cold-rolling mill again, the belt steel surface iron scale is removed.The existing operation of pickling is numerous and diverse though this patent has solved, floor space big, the drawback of contaminated environment, but the problem of its existence is in actual applications, the band steel enters the belt steel flating part after loose decorticator destroys the physical arrangement of iron scale, the iron scale of peeling off can be glued on the transfer roller of planisher in the continuous rotary course of planisher, like this when transfer roller continues thereafter belt steel flating just with it on the iron scale of adhesive tape press to the belt steel surface of back once more, thereby rust cleaning causes obstacle to belt steel surface; In addition, this patent promptly utilizes the wire brush dish to clean with water after to belt steel flating, because belt steel surface is stained with the iron scale that is broken in a large number and separates when cleaning with water, therefore quality is cleaned in influence with water easily, and a large amount of iron scales can cause the reduction in service life of wire brush dish, does not utilize actual use.
The problem that the hot-strip surface treatment method of this patent disclosure exists is owing to lack the process that sprays emulsion to belt steel surface, therefore to occur the strip deformation inequality easily before it enters planisher, the loose uneven situation of iron scale; For fear of the loose uneven problem of iron scale occurring, people repay and try to spray a large amount of emulsifying agents to belt steel surface, but find that effect is not very good, and the loose uneven problem of iron scale still exists, and be accompanied by the loss of a large amount of emulsifying agents, the cost increase has also been polluted peripheral environment simultaneously.In addition, which type of degree the reduction ratio that people be difficult to grasp planisher in practical operation reaches on earth just has the iron scale of both having realized the crushing shell belt steel surface, can the strip steel not produced considerable influence again, because it is found that in the practical operation, drafts is crossed conference makes iron scale be pressed into the band steel, can't realize purpose to the iron scale fragmentation if drafts is too little, therefore people are seeking a kind of effective reduction ratio, thereby realize neither the band steel being exerted an influence and method that can effective broken iron scale.
Summary of the invention
Have the drawback that can not effectively remove iron scale attached thereto at existing planisher, the invention provides a kind of planisher, it can solve iron scale effectively and be attached to problem on the planisher roll.
Clean problem of poor quality, that the life-span is low with water at present anacidity derusting device existence, the invention provides a kind of anacidity derusting device, it can significantly improve the life-span and the washing effect of iron brush.
Have emulsion waste, problem of environment pollution caused at present anacidity derusting method, the invention provides a kind of anacidity derusting method, it can reduce cost the protection environment again under the situation of broken iron scale preferably.
The concrete scheme of dealing with problems is as follows:
A kind of planisher mainly comprises frame 12, smooth lower roll 13, smooth depress roller 14, is fixed with roll on the described frame 12 and wipes examination device 15, and the termination of described roll wiper 15 contacts with smooth lower roll 13, smooth depress roller 14.Roll wiper 15 can be removed whenever the rotate a circle iron scale of institute's adhesive tape of roll, reduces the removing difficulty in later stage, increases work efficiency.
Preferably, roll wiper 15 is wire brushes, and wire brush can be removed the iron scale that roller surface adheres to preferably.
Preferably, roll wiper 15 is hairbrush, the advantage that hairbrush has is cheap, do not damage the roll body.
A kind of hot-strip anacidity derusting device that uses aforementioned planisher, this device comprises from front to back successively with the lower part: emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, described each several part all connects by band steel 7, and the band steel can be realized removing to its scale on surface by the said equipment successively.
Especially, when needs eliminate rust continuously, then this anacidity derusting device also comprises uncoiler 8, pinch roll 9, bonding machine 10 and the kink 11 that is arranged on emulsion supply equipment 1 the place ahead, and described each several part all connects by band steel 7, can guarantee the operating continuity that eliminates rust like this.
A kind of method of using aforementioned anacidity derusting device that hot-strip is eliminated rust, detailed process is, control band steel 7 is successively through emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, two surfaces up and down of 1 pair of described emulsion supply equipment band steel spray the emulsion of 5～10 μ m respectively, the reduction ratio of planisher is controlled to be, general steel plate: 3～8%, silicon steel 5～10%; The pressure of the water under high pressure that smooth afterflush is used adopts 6.3～16.3MPa.
Preferably, two whens spraying surface up and down of band steel are adopted electrostatic coating method, electrostatic spraying has conservation, the manageable advantage of thickness.
Preferably, two surfaces up and down of 1 pair of emulsion supply equipment band steel spray the emulsion of 6 μ m respectively, and control band steel enters planisher then, at general steel plate, the reduction ratio of planisher is controlled to be 4～5%, and the pressure of the water under high pressure that smooth afterflush is used adopts 7～9MPa.
Preferably, two surfaces up and down of 1 pair of emulsion supply equipment band steel spray the emulsion of 8 μ m respectively, and control band steel enters planisher then, at general steel plate, the reduction ratio of planisher is controlled to be 6～7%, and the pressure of the water under high pressure that smooth afterflush is used adopts 13～15MPa.
Scheme of the present invention can produce following effect:
1. derusting device of the present invention can be realized the rust cleaning to straight carbon steel, stainless steel and silicon steel, applied range.
2. adopt derusting device of the present invention can realize the anacidity rust cleaning, saved the extremely strong acid solution of corrosivity, eliminated the corrosion of acid solution simultaneously, greatly reduce production cost equipment.
3. owing to adopt the anacidity rust cleaning, the based on very high purity of iron oxide in the iron rust is different from pickling rear oxidation iron and has changed into molysite, has improved the price and the utilization rate of iron oxide.
4. owing to be anacidity rust cleaning, saved the acid solution stocking system, acid solution is followed ball system, acid solution recovery system, acid solution regenerative system and acid mist and reclaimed exhaust system etc., can save great amount of investment, has improved environmental pollution.
National common cold rolled sheet output about 2,580 ten thousand tons (containing the postorder clad plate) in 2005, ton steel acid consumption 3-5kg, ten thousand tons of year about 7.5-13 of consumption hydrochloric acid, one ton of hydrochloric acid then adopt device of the present invention can save ten thousand yuan of acid expense 4300-7000 every year by 560 yuan.
Along with environmental protection and the formation social with association, country uses and controls more and more stricter acid, therefore anacidity derusting device of the present invention is steel industry and steel processing industry, a small investment is provided, has consumed low, as not have filth greening production technology, and market prospects are wide.
5. anacidity derusting device of the present invention adopts the emulsion supply equipment to spray emulsion to belt steel surface simultaneously, the iron scale of the drafts crushing shell belt steel surface by planisher, the equipment of spraying water with high pressure can tentatively be removed broken iron scale, thereby make the iron scale of belt steel surface under the effect of iron brush, remove more thoroughly, and owing to reduced the live load of iron brush, so improved the service life of brush.
6. be provided with the roll wiper on the planisher of the present invention, it can remove whenever the rotate a circle iron scale of institute's adhesive tape of roll, avoids iron scale to press on thereafter the band steel with roll once more, has therefore reduced the removing difficulty in later stage, has improved operating efficiency.
7. anacidity derusting method of the present invention is when having saved a large amount of emulsifying agents, having reduced cost; protected peripheral environment again; and by the adjustment to reduction ratio realized neither to the band steel exert an influence and can be evenly, the purpose of broken iron scale effectively, therefore be beneficial to and apply.
Description of drawings
Fig. 1 is the structural representation of planisher;
Fig. 2 is the structural representation of anacidity derusting device.
The specific embodiment
The present invention will be further described below in conjunction with accompanying drawing.
With reference to Fig. 1, a kind of planisher mainly comprises frame 12, smooth lower roll 13, smooth depress roller 14, is fixed with roll and wipes examination device 15 on frame 12, and the termination of described roll wiper 15 contacts with smooth lower roll 13, smooth depress roller 14.Roll is wiped examination device 15 can be removed its surface adhesion in the roll rotary course iron scale, avoids iron scale to be pressed into the band steel once more, has therefore reduced the difficulty of later stage removing.
Should be appreciated that; described roll wiper 15 is not limited to be fixed on the frame 12; because when reality is used, can as required it be arranged on any position easily; as long as can contacting with roll, its termination it is realized the purpose of scraping, so all should be within protection scope of the present invention.
Can know that roll has certain-length in the axial direction, so roll wiper 15 should have the length that adapts with roll to remove the iron scale of each position of roll.
Certainly, roll wiper 15 can have form and structure arbitrarily, such as being a wiper that is strapped on the support, perhaps it is arranged to one as required and scrapes wiping board, as long as can realize friction between itself and the roll.
Preferably, described roll wiper 15 is wire brushes, because find in test, the stiffness of wire brush can produce bigger friction between itself and roll, thereby removes the iron scale of roller surface preferably.
Wire brush can be made with steel wire, certainly, can consider that also cost problem or raw material are equipped with problem and select to make with iron, copper or other metal materials.
Preferably, described roll wiper 15 is hairbrush, can determine whether according to the size of actual iron scale removing amount using, and can select to use hairbrush for the roll that the adhesion amount of iron scale is little, cost can be saved like this, and roller surface can be avoided damaging.
The hair of hairbrush can be prepared from plastics, also can adopt other to prepare as elastomeric material.
With reference to Fig. 2, a kind of hot-strip anacidity derusting device that uses above-mentioned planisher, it comprises from front to back successively with the lower part: emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, described each several part all connects by band steel 7, described each equipment overall work can realize the purpose that the band steel is eliminated rust preferably.
The method that a kind of aforementioned anacidity derusting device eliminates rust to hot-strip, its process is, control band steel 7 is successively through emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, two surfaces up and down of 1 pair of described emulsion supply equipment band steel spray the emulsion of 5～10 μ m respectively, the reduction ratio of planisher is controlled to be, general steel plate: 3～8%, silicon steel 5～10%; The pressure of the water under high pressure that smooth afterflush is used adopts 6.3～16.3MPa.
During work, at first that described equipment is horizontally disposed successively on a production line, described each equipment can be fixed on the frame to realize the fixing of relative position.During band steel process emulsion supply equipment, the method for preferentially selecting electrostatic spraying for use can certainly adopt the method for hand spray, mechanically spraying or atomizing spraying to hot rolling belt steel surface spraying 5～10 μ m emulsions; Then control band steel enter planisher carry out smooth, thereby make the distortion of steel band in planisher even, and reduced the load of planisher.Planisher can adopt two rollers, also can adopt four rollers, and the main effect of planisher is the iron scale by drafts crushing shell belt steel surface, need control different reduction ratios at different steel grades, is specially, and at general steel plate, reduction ratio is controlled to be 3～8%; At silicon steel, reduction ratio is controlled to be 5～10%; The emulsion that strip steel surface adds when smooth is lubricated it and cools off, after smooth, the roll wiper will be attached to the iron scale wiped clean on the roll, it is the high pressure water washing of 6.3～16.3Mpa that pressure is adopted on strip steel surface, with the preliminary iron scale of removing fragmentation, for the iron scale that makes strip steel surface remove more thorough, behind the high pressure water washing, adopt the brush of iron in groups to scrub the surface of strip steel continuously again, the described iron brush of present embodiment adopts two groups, and every group has two cover brushes, so promptly can reach the purpose of removing iron scale fully, and then through cleaning, oven dry and the operation of batching are finished the whole operation process that anacidity eliminates rust.
Preferably, two surfaces up and down of 1 pair of described emulsion supply equipment band steel spray the emulsion of 6 μ m respectively, control band steel enters planisher then, at general steel plate, the reduction ratio of planisher is controlled to be 4～5%, the pressure of the water under high pressure that smooth afterflush is used adopts 7～9MPa, and described numerical value can evenly be realized the fragmentation to iron scale effectively.
Preferably, two surfaces up and down of 1 pair of described emulsion supply equipment band steel spray the emulsion of 8 μ m respectively, control band steel enters planisher then, at general steel plate, the reduction ratio of planisher is controlled to be 6～7%, the pressure of the water under high pressure that smooth afterflush is used adopts 13～15MPa, and described numerical value can evenly be realized the fragmentation to iron scale effectively.
This process of going up is applicable to discontinuous rust cleaning process, each volume rust cleaning separately just.And for continuous rust cleaning, then must be through welding and kink technology, to guarantee the rust cleaning operating continuity.Therefore, described anacidity derusting device also comprises uncoiler 8, pinch roll 9, bonding machine 10 and the kink 11 that is arranged on emulsion supply equipment 1 the place ahead, and described each several part all connects by band steel 7.During work, hot-rolled sheet coil passes through uncoiler 8, pinch roll 9, bonding machine 10 and kink 11 successively, sprays into emulsion through the emulsion supply equipment to its surface, enters planisher then and carries out smooth getting final product, and subsequent process is with aforementioned consistent.
Now, people are the band steel is cooled off to a large amount of emulsifying agent purposes of hot-strip surface spraying, but for occurring the loose uneven problem of iron scale simultaneously, people attempt to solve but never find suitable method.At this kind situation, analyze reason, may be to flow by the emulsifying agent that plumbing nozzle ejects, therefore can't be evenly distributed at belt steel surface, thereby can't make strip deformation even,, reduce the effect of loose iron scale so the problem of the loose inequality of iron scale just can occur.At this situation, invention goes into to have done following contrast test:
Hot-strip anacidity derusting device at first is set, and it comprises emulsion supply equipment 1, planisher 2 from front to back successively, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6, and the roll wiper is set on the planisher 2.Described each several part is fixed on the frame in order.
The control general steel plate is successively through emulsion supply equipment 1, planisher 2, the equipment 3 that sprays water with high pressure, iron brush 4, cleaning, drying equipment 5 and coiling machine 6:
(1) adopt by plumbing nozzle two methods that emulsion is sprayed on the surface in a large number up and down, emulsion is trickled in steel strip surface steel plate, main in the cooling effect that rises steel band and roll.The reduction ratio of control planisher is 0.3～0.5, and water under high pressure pressure is 4.5MPa.
It is as follows that the strip steel that comes out from coiling machine is carried out testing result: the once oxidation iron sheet is handled inhomogeneous, also has the secondary of iron scale to be pressed into.
(2) adopt the up and down emulsion of two surface respectively even spraying 5～10 μ ms of the method for electrostatic spraying to steel plate.The reduction ratio of control planisher is 5～7%, and the pressure of water under high pressure adopts 10.3MPa.
It is as follows that the strip steel that comes out from coiling machine is carried out testing result: strip plastic deformation is even, and iron scale is evenly broken, does not have the secondary of iron scale to be pressed into.
Sum up: above-mentioned description of test, the method for the invention significantly reduces the quantity for spray of emulsion, makes it evenly adhere to belt steel surface, can realize that like this strip plastic deformation is even, the broken uniform purpose of iron scale, thereby realizes the anacidity rust cleaning better.
Need explanation; present embodiment is just done an exemplary illustration and is not limited its protection domain the present invention; in actual use; those skilled in the art can carry out structural change to it according to the aim of this paper fully; and under the prerequisite of not paying creative work with respect to the present invention just to its altered structure; all be considered as being equal to replacement to of the present invention, so all within protection scope of the present invention.
Claims (5)
1. planisher, mainly comprise frame (12), smooth lower roll (13), smooth depress roller (14), it is characterized in that: be fixed with roll on the described frame (12) and wipe examination device (15), the termination of described roll wiper (15) contacts with smooth lower roll (13), smooth depress roller (14).
2. planisher according to claim 1 is characterized in that described roll wiper (15) is a wire brush.
3. planisher according to claim 1 is characterized in that described roll wiper (15) is a hairbrush.
4. hot-strip anacidity derusting device that uses the described planisher of claim 1, it is characterized in that comprising successively from front to back with the lower part: emulsion supply equipment (1), planisher (2), the equipment that sprays water with high pressure (3), iron brush (4), cleaning, drying equipment (5) and coiling machine (6), described each several part all passes through band steel (7) and connects.
5. hot-strip anacidity derusting device according to claim 4, it is characterized in that also comprising the uncoiler (8), pinch roll (9), bonding machine (10) and the kink (11) that are arranged on emulsion supply equipment (1) the place ahead, described each several part all passes through band steel (7) and connects.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101250404A CN100455370C (en) | 2006-11-15 | 2006-11-15 | Leveling machine, black strip acid-free derusting device using the same and method thereof |
Applications Claiming Priority (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CNB2006101250404A CN100455370C (en) | 2006-11-15 | 2006-11-15 | Leveling machine, black strip acid-free derusting device using the same and method thereof |
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| CN1962105A CN1962105A (en) | 2007-05-16 |
| CN100455370C true CN100455370C (en) | 2009-01-28 |
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| CNB2006101250404A Expired - Fee Related CN100455370C (en) | 2006-11-15 | 2006-11-15 | Leveling machine, black strip acid-free derusting device using the same and method thereof |
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