CN105543875B - A kind of steel band descaling bath of slot external circulation heating - Google Patents
A kind of steel band descaling bath of slot external circulation heating Download PDFInfo
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- CN105543875B CN105543875B CN201510928588.1A CN201510928588A CN105543875B CN 105543875 B CN105543875 B CN 105543875B CN 201510928588 A CN201510928588 A CN 201510928588A CN 105543875 B CN105543875 B CN 105543875B
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- pickling
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- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/021—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by dipping
-
- C—CHEMISTRY; METALLURGY
- C23—COATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; CHEMICAL SURFACE TREATMENT; DIFFUSION TREATMENT OF METALLIC MATERIAL; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL; INHIBITING CORROSION OF METALLIC MATERIAL OR INCRUSTATION IN GENERAL
- C23G—CLEANING OR DE-GREASING OF METALLIC MATERIAL BY CHEMICAL METHODS OTHER THAN ELECTROLYSIS
- C23G3/00—Apparatus for cleaning or pickling metallic material
- C23G3/02—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously
- C23G3/025—Details of the apparatus, e.g. linings or sealing means
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- Chemical Kinetics & Catalysis (AREA)
- General Chemical & Material Sciences (AREA)
- Engineering & Computer Science (AREA)
- Materials Engineering (AREA)
- Mechanical Engineering (AREA)
- Metallurgy (AREA)
- Organic Chemistry (AREA)
- Cleaning And De-Greasing Of Metallic Materials By Chemical Methods (AREA)
Abstract
The invention discloses a kind of steel band descaling baths of slot external circulation heating, belong to steel band pickler technical field.The present invention includes pressure roller I, pressure roller II, pickling tube, acid tank cover, squeeze roller, drying air knife and circulating heater, and circulating heater is arranged in pickling tube side；Pressure roller I and pressure roller II are separately positioned on the entrance and exit position of descaling bath, and the outlet port of descaling bath is also disposed with squeeze roller and drying air knife；More than two pickling tubes are provided in descaling bath, the lower part of adjacent pickling tube is connected, and is fixed with sealing side wall in pickling tube side-wall outer side, sealing the groove formed between side wall and pickling tube side wall is water sealed tank；Acid tank cover is stamped above each pickling tube.According to the technical solution of the present invention it is possible to prevente effectively from generating a large amount of steam in pickling tube, and the leakage and waste of pickling solution can be prevented, save production cost.
Description
Technical field
The present invention relates to steel band pickler technical fields, more specifically to a kind of steel band of slot external circulation heating
Descaling bath.
Background technique
Steel band generally requires before entering cold rolling process and first passes through pickling processes, because steel band is in wet environment at present
In be easy to happen oxidation, there is one layer of thicker oxidation film on surface, cause its finished product discoloration it is more obvious, seriously affect steel band production
The quality and beauty of product, the main purpose of pickling are effective impurity for removing steel strip surface.If steel band pickling is not thorough, a side
Face directly results in impurity in manufacturing process and is pressed into steel strip surface, influences the quality of cold-rolled products；On the other hand to lower road Cold-roller
The gloss level of roll of sequence and emulsion service life adversely affect.Therefore preceding working procedure as cold rolling, pickling process is to closing again
It wants.
Pickling process is usually that steel band first passes through descaling bath pickling and then passes through washing and brushing device and scrubbed in the prior art,
The impurity of steel strip surface is brushed away, is then cleaned by service sink, however during descaling bath continuous acid-washing, it needs to make pickling solution
Certain temperature is kept, pickling solution is directly being carried out to be easy to make pickling line to generate a large amount of steam acid mists etc. in heating process, and
Acid mist is easy to spread into air, makes surrounding enviroment and equipment by different degrees of corrosion, along with the continuous propulsion of technology
With the continuous enhancing of environmental consciousness, steel band pickler is badly in need of being further improved.
About the technological improvement of steel band descaling bath, has related patents in the prior art and disclose, such as Chinese patent application
Number: 2013205907586, the applying date is on September 24th, 2013, invention and created name are as follows: a kind of steel band derusting pickling line, the Shen
Please case be related to a kind of steel band derusting pickling line, including descaling bath and Rinsing Area, be equipped with acid fog absorption tower and correspondence above descaling bath
The stone roll slot cover of stone roll, top is equipped with excessive acid tank cover between descaling bath and Rinsing Area, and excessive acid tank cover is connect with stone roll slot cover
Place, stone roll slot cover and acid fog absorption tower junction are equipped with groove, and clear water is marked in groove, and this application will by water seal
Acid mist is enclosed in descaling bath, thus so that acid mist is leaked outside, but this application can only reduce acid mist leaking into air, it can not
The generation of acid mist is reduced from source, and can not solve the problems, such as that pickling solution wastes caused by pickling solution is evaporate into groove,
It requires further improvement.
Summary of the invention
Technical problems to be solved by the inivention
Acid mist is serious when the present invention is heated for pickling line in the prior art and pickling solution is easy the deficiency that evaporation wastes, and mentions
The steel band descaling bath for having supplied a kind of slot external circulation heating, can effectively reduce the generation of acid mist, and avoid the waste of pickling solution, from
And production cost is reduced, improve pickling environment.
Technical solution
In order to achieve the above objectives, technical solution provided by the invention are as follows:
A kind of steel band descaling bath of slot external circulation heating of the invention, including pressure roller I, pressure roller II, pickling tube, acid tank cover,
Squeeze roller, drying air knife and circulating heater, the pressure roller I and pressure roller II are separately positioned on the entrance and exit position of descaling bath
It sets, steel band is pressed into the pickling solution in pickling tube by pressure roller I and pressure roller II, and wherein the outlet port of descaling bath is also disposed with
Squeeze roller and drying air knife；
More than two pickling tubes is provided in descaling bath, the lower part of adjacent pickling tube is connected, in pickling tube side wall
Outside is provided with sealing structure, including the sealing side wall being fixedly connected with pickling tube side wall, the sealing side wall and pickling tube side wall
Between the groove that is formed be water sealed tank；Acid tank cover is stamped above each pickling tube；
The circulating heater is arranged in the side of descaling bath, including acid tube, deposits sour pond, heater body and into acid
Pipe, one end of the acid tube are connected with pickling tube, and the other end of acid tube is connected with sour pond is deposited, the heater body
On be provided with acid extracting pipe road and be connected with sour pond is deposited, one end of the acid inlet tube is connected with pickling tube, the other end of acid inlet tube
It is connected with heater body, heater body is internally provided with capillary.
Further, the acid tank cover includes inner wall, outer wall, upper cover and deflector, and inner wall is located at below upper cover, and is connected
In the surrounding position of upper cover, inner wall and upper cover form a hollow cavity, and inner wall is placed in above-mentioned water sealed tank；Outer wall is set
It sets in the outside of inner wall, and is in contact with the upper surface of sealing side wall；The medial surface of upper cover is also fixed with deflector along surrounding, institute
The inside that deflector is located at inner wall is stated, and deflector is tilted to upper cover centre, so that deflector and pickling tube side wall is interior
Side is in contact, and the angle between deflector and pickling tube side wall is α, and α is acute angle.
Further, the acid tank cover further includes stiffening plate, and wherein upper cover is arcuate structure, and the stiffening plate is arranged upper
The center of lid medial surface, and the both ends of stiffening plate are fixedly connected with deflector respectively.
Further, the explosionproof hole through its thickness is offered on the upper lid.
Further, the size of the angle α is 15 ~ 30 °.
Further, it is additionally provided with acid mist purifying device above the descaling bath, is set gradually in the acid mist purifying device
There are cooling zone, a neutral zone, secondary neutral zone and demister device.
Beneficial effect
Using technical solution provided by the invention, compared with prior art, there is following remarkable result:
(1) present invention is provided with circulating heater in the side of descaling bath, including acid tube, deposits sour pond, heater sheet
One end of body and acid inlet tube, acid tube is connected with pickling tube, and the other end is connected with sour pond is deposited, and is provided in heater body
Acid extracting pipe road is connected with sour pond is deposited, and one end of acid inlet tube is connected with pickling tube, the other end and heater body of acid inlet tube
It is connected, heater body is internally provided with a large amount of capillaries；Heater body is also connected with the boiler room of workshop, boiler
High temperature hot steam is constantly delivered in the capillary in heater body by room, so that circulation has a large amount of high temperature to steam in capillary
Vapour, when the pickling solution in pickling tube is discharged into and deposits in sour pond when the temperature drops, opening acid tube by the pickling solution of pickling tube, then plus
Acid extracting pipe road on hot device ontology is driven by kinetic pump, the pickling solution deposited in sour pond is pumped into heater body, pickling solution
It is slowly flowed through from the lateral surface of a large amount of capillaries, to be gradually heated up by the high-temperature steam inside capillary, after heated
Pickling solution passes through acid inlet tube again and flows back into pickling tube, finally makes the pickling solution temperature of pickling tube constantly increase, use is this
The mode of slot external circulation heating avoids hot steam and enters directly into pickling tube, so as to avoid pressure in pickling tube it is continuous on
It rises, pickling solution is also easier to the problem of evaporation leaks.
(2) present invention is provided with sealing structure in pickling tube side-wall outer side, including the sealing being fixedly connected with pickling tube side wall
Side wall, sealing the groove formed between side wall and pickling tube side wall is water sealed tank, the injected clear water in the water sealed tank, each pickling
Acid tank cover is stamped above pond, and the inner wall of acid tank cover is placed in water sealed tank, the clear water in water sealed tank will be inside pickling tube
It is fully sealed with the external world, the pickling solution inside pickling tube can be effectively prevent, to external diffusion, to avoid pickling solution due to by thermal evaporation
To the pollution with external environment.
(3) present invention is provided with deflector on upper lid, and deflector is tilted to upper cover centre, and acid tank cover is covered
When above pickling tube, inner wall is located in water sealed tank, and deflector is in contact on the inside of pickling tube side wall just, i.e., by pickling tube
Obstructed completely between side wall and water sealed tank, after acid mist liquefaction when flowing back along upper cover, can because the blocking of deflector and can not be into
Enter water sealed tank, so that the smooth surface along deflector all flows back into pickling tube, further avoids the diffusion of pickling solution
With waste.
Detailed description of the invention
Fig. 1 is the structural diagram of the present invention；
Fig. 2 is the pickling tube structural schematic diagram in the present invention.
Label declaration in schematic diagram: 2, acid mist purifying device；3, pressure roller I；4, acid tank cover；6, pressure roller II；8, squeeze roller；9,
Drying air knife；401, inner wall；402, outer wall；403, upper cover；404, deflector；405, stiffening plate；501, pickling tube；502, water seal
Slot；503, pickling tube side wall；504, side wall is sealed.
Specific embodiment
To further appreciate that the contents of the present invention, the present invention is described in detail with reference to the accompanying drawings and examples.
Embodiment 1
As depicted in figs. 1 and 2, the steel band descaling bath of a kind of slot external circulation heating of the present embodiment, including pressure roller I 3, pressure roller
II 6, pickling tube 501, acid tank cover 4, squeeze roller 8, drying air knife 9 and circulating heater, wherein pressure roller I 3 and pressure roller II 6 are distinguished
It is arranged in the pickling solution that steel band is pressed into pickling tube 501 by the entrance and exit position of descaling bath, pressure roller I 3 and pressure roller II 6,
So that steel band is acid washed liquid always in continuous forward movement and is completely soaked, acid cleaning process is realized；The outlet position of descaling bath
Set and be also disposed with squeeze roller 8 and drying air knife 9, steel strip surface after pickling adheres to one layer of pickling solution, steel band first from
Pass through between the up-down rollers of squeeze roller 8, this is extracted surface acid-washing liquid-based, then by drying air knife 9 to remaining pickling solution into
One step purging.
Circulating heater is arranged in the side of descaling bath, including acid tube, deposits sour pond, heater body and acid inlet tube,
One end of acid tube is connected with pickling tube 501, and the other end of acid tube is connected with sour pond is deposited, and is provided in heater body
Acid extracting pipe road is connected with sour pond is deposited, and kinetic pump is provided on acid extracting pipe road, and one end of acid inlet tube is connected with pickling tube 501,
The other end and heater body of acid inlet tube are connected, and heater body is internally provided with a large amount of capillaries；Heater body also with
The boiler room of workshop is connected, and high temperature hot steam is constantly delivered in the capillary in heater body by boiler room, makes
Obtaining circulation in capillary has a large amount of high-temperature steams, when the pickling solution in pickling tube 501 when the temperature drops, opening acid tube for pickling
Pickling solution in pond 501, which is discharged into, to be deposited in sour pond, and then the acid extracting pipe road in heater body is driven by kinetic pump, will deposit sour pond
In pickling solution be pumped into heater body in, pickling solution is slowly flowed through from the lateral surface of a large amount of capillaries, thus by capillary
The high-temperature steam in portion is gradually heated up, it is heated after pickling solution pass through acid inlet tube again and flow back into pickling tube 501, finally make
Pickling solution temperature in pickling tube 501 constantly rises, since the discharge and reflux of pickling solution are continuous circulation progress, so plus
The normal traveling of steel band is had no effect in thermal process.Traditional heating method mostly uses directly in pickling tube 501 to pickling solution
It is heated at high temperature, this mode can not only make to be covered with hot steam in entire pickling tube 501, and pressure constantly rises, to equipment material
Matter performance has requirements at the higher level, also results in the continuous evaporation leakage of pickling solution itself, it is also possible to because frequent suddenly by thermal conductivity
Cause the cracking of pickling tube side wall 503；For technical staff by the way of slot external circulation heating, hot steam will not be directly entered pickling tube
It, then can effective these problems in 501.
More than two pickling tubes 501 is provided in descaling bath, the lower part of adjacent pickling tube 501 is connected, steel band acid
Be to be pierced by pickling tube 501 when washing, be provided with sealing structure on the outside of pickling tube side wall 503, including with pickling tube side wall
The 503 sealing side walls 504 being fixedly connected with, sealing the groove formed between side wall 504 and pickling tube side wall 503 is water sealed tank 502,
501 inside of pickling tube is fully sealed with the external world for injected clear water in the water sealed tank 502, the clear water in water sealed tank 502, can be effective
Prevent the pickling solution inside pickling tube 501 from, to external diffusion, avoiding pollution of the pickling solution pair with external environment due to by thermal evaporation；
It is stamped acid tank cover 4 in each 501 top of pickling tube.
Acid tank cover 4 includes inner wall 401, outer wall 402, upper cover 403 and deflector 404, and inner wall 401 is located at 403 lower section of upper cover,
And it is connected in the surrounding position of upper cover 403, inner wall 401 and upper cover 403 form a hollow cavity, in order to reduce pickling to the greatest extent
The height of heat diffusion in pond 501, the small volume of the hollow cavity, upper cover 403 is lower；Inner wall 401 is placed on water seal
In slot 502；The outside of inner wall 401 is arranged in outer wall 402, and is in contact with the upper surface of sealing side wall 504；Upper cover 403 it is interior
Side is also fixed with deflector 404 along surrounding, and deflector 404 is located at the inside of inner wall 401, and deflector 404 is into upper cover 403
The inclination of center portion position so that deflector 404 is in contact with the inside of pickling tube side wall 503, the design of the deflector 404 be in order into
One step prevents the leakage of pickling solution and evaporation from wasting.
When pickling pickling solution because temperature influence will form acid mist, acid mist is gathered and can be liquefied again below upper cover 403, along
The medial surface of upper cover 403 flows back into pickling tube 501, and upper cover 403 is arcuate structure, is more advantageous to the reflux of pickling solution；But skill
Art personnel have found that the part pickling solution after liquefaction can finally flow back into water sealed tank 502 along upper cover 403 during long-term production
In, gradually the clear water in water sealed tank 502 is acidified, the wasting of resources of pickling solution is also resulted in, improves production cost；To avoid
This phenomenon, technical staff are creatively added to the design of deflector 404, which is arranged in the inside of inner wall 401, and
Deflector 404 is tilted to 403 centre of upper cover, and when acid tank cover 4 is covered above pickling tube 501, inner wall 401 is located at water sealed tank
In 502, and deflector 404 is in contact with the inside of pickling tube side wall 503 just, i.e., by pickling tube side wall 503 and water sealed tank 502
Between obstruct completely, acid mist liquefaction after along upper cover 403 flow back when, can because deflector 404 blocking and cannot be introduced into water seal
Slot 502 avoids diffusion and the wave of pickling solution so that the smooth surface along deflector 404 all flows back into pickling tube 501
Take.Angle between the deflector 404 and pickling tube side wall 503 is that α (is specifically deflector 404 and longitudinal vertical line in Fig. 2
Between angle be α, the longitudinal direction vertical line is parallel with pickling tube side wall 503), the effect that the size of α flows back for pickling solution
Tool has a certain impact, if α is excessive, will lead to excessive by resistance and speed is excessively slow in pickling solution reflux, if α is too small and is unfavorable for
The cooperation of entire acid tank cover 4 and pickling tube 501 leads to cover being limited with the movement opened；Technical staff is by continuous experiment
Grope, finally found that when α is 15 ~ 30 ° most useful for production and application, neither influence the back-flow velocity of pickling solution, is also conducive to entire
The cooperation of acid tank cover 4 and pickling tube 501, specifically α is 15 ° in the present embodiment.
For the structural strength for reinforcing acid tank cover 4, in the center of 403 medial surface of the upper cover setting stiffening plate 405, and add
The both ends of strong plate 405 are fixedly connected with deflector 404 respectively.The explosionproof hole through its thickness is offered in upper cover 403, steel band is in acid
A small amount of hydrogen may be displaced because there is chemical reaction during washing, hydrogen is assembled in pickling tube 501 excessively to be then easy to lead
Cause safety accident, in order to improve production security, technical staff has opened up explosionproof hole in upper cover 403, the explosion-proof pore size compared with
It is small, the hydrogen of generation can be discharged at any time, and not will lead to a lot of leakage of acid mist.
It is additionally provided with acid mist purifying device 2 above descaling bath, cooling zone, primary neutralization are disposed in acid mist purifying device 2
Area, secondary neutral zone and demister device, the present invention in be provided with two groups of acid mist purifying devices 2 altogether, respectively in the entrance of descaling bath
And outlet port, the acid mist of entrance first pass around cooling zone and liquefy, then pass through a neutral zone and secondary neutral zone respectively
Acid-base neutralization is carried out, is finally filtered by demister, clean gas is discharged.
Embodiment 2
With embodiment 1, except that α size is 20 ° in the present embodiment.
Embodiment 3
With embodiment 1, except that α size is 30 ° in the present embodiment.
Schematically the present invention and embodiments thereof are described above, description is not limiting, institute in attached drawing
What is shown is also one of embodiments of the present invention, and actual structure is not limited to this.So if the common skill of this field
Art personnel are enlightened by it, without departing from the spirit of the invention, are not inventively designed and the technical solution
Similar frame mode and embodiment, are within the scope of protection of the invention.
Claims (3)
1. a kind of steel band descaling bath of slot external circulation heating, it is characterised in that: including pressure roller I (3), pressure roller II (6), pickling tube
(501), acid tank cover (4), squeeze roller (8), drying air knife (9) and circulating heater, the pressure roller I (3) and pressure roller II (6) point
The acid that steel band is pressed into pickling tube (501) by the entrance and exit position of descaling bath, pressure roller I (3) and pressure roller II (6) is not set
In washing lotion, wherein the outlet port of descaling bath is also disposed with squeeze roller (8) and drying air knife (9)；
It is provided in descaling bath more than two pickling tubes (501), the lower part of adjacent pickling tube (501) is connected, in pickling
It is provided with sealing structure on the outside of pond side wall (503), it is described including the sealing side wall (504) being fixedly connected with pickling tube side wall (503)
The groove formed between sealing side wall (504) and pickling tube side wall (503) is water sealed tank (502)；Above each pickling tube (501)
It is stamped acid tank cover (4)；
The circulating heater is arranged in the side of descaling bath, including acid tube, deposits sour pond, heater body and acid inlet tube,
One end of the acid tube is connected with pickling tube (501), and the other end of acid tube is connected with sour pond is deposited, the heater sheet
It is provided with acid extracting pipe road on body and is connected with sour pond is deposited, one end of the acid inlet tube is connected with pickling tube (501), acid inlet tube
The other end and heater body are connected, and heater body is internally provided with capillary；
The acid tank cover (4) includes inner wall (401), outer wall (402), upper cover (403) and deflector (404), and inner wall (401) is located at
Below upper cover (403), and it is connected in the surrounding position of upper cover (403), inner wall (401) and upper cover (403) composition one are hollow
Cavity, inner wall (401) are placed in above-mentioned water sealed tank (502)；Outer wall (402) be arranged in the outside of inner wall (401), and with it is close
The upper surface of envelope side wall (504) is in contact；The medial surface of upper cover (403) is also fixed with deflector (404), the water conservancy diversion along surrounding
Plate (404) is located at the inside of inner wall (401), and deflector (404) is tilted to upper cover (403) centre, so that deflector
(404) it is in contact on the inside of pickling tube side wall (503), and the angle between deflector (404) and pickling tube side wall (503) is
α, α are acute angle；The size of the angle α is 15~30 °；The explosionproof hole through its thickness is offered on the upper cover (403).
2. a kind of steel band descaling bath of slot external circulation heating according to claim 1, it is characterised in that: the acid tank cover
It (4) further include stiffening plate (405), wherein upper cover (403) is arcuate structure, and stiffening plate (405) setting is in upper cover (403)
The center of side, and the both ends of stiffening plate (405) are fixedly connected with deflector (404) respectively.
3. a kind of steel band descaling bath of slot external circulation heating according to claim 1, it is characterised in that: on the descaling bath
Side is additionally provided with acid mist purifying device (2), be disposed in the acid mist purifying device (2) cooling zone, a neutral zone, it is secondary in
With area and demister device.
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201510928588.1A CN105543875B (en) | 2015-12-15 | 2015-12-15 | A kind of steel band descaling bath of slot external circulation heating |
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| Application Number | Priority Date | Filing Date | Title |
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| CN201510928588.1A CN105543875B (en) | 2015-12-15 | 2015-12-15 | A kind of steel band descaling bath of slot external circulation heating |
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| CN105543875A CN105543875A (en) | 2016-05-04 |
| CN105543875B true CN105543875B (en) | 2018-12-04 |
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Families Citing this family (3)
| Publication number | Priority date | Publication date | Assignee | Title |
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| CN110257847A (en) * | 2019-07-29 | 2019-09-20 | 温州宪江防腐设备有限公司 | A kind of descaling bath of recyclable heating |
| CN112458478A (en) * | 2020-10-23 | 2021-03-09 | 宝钢集团南通线材制品有限公司 | Galvanized steel wire pickling tank and pickling production line |
| CN114574873B (en) * | 2022-03-04 | 2022-11-25 | 江苏国源稀土新材料有限公司 | Neodymium iron boron waste recovery device and method for manufacturing praseodymium neodymium oxide |
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| CN201538542U (en) * | 2009-10-14 | 2010-08-04 | 北京京杰锐思技术开发有限公司 | Sealing cover structure |
| CN101956201A (en) * | 2009-07-16 | 2011-01-26 | 宝钢集团新疆八一钢铁有限公司 | Environment-friendly steel wire pickling bath |
| CN102995040A (en) * | 2012-10-15 | 2013-03-27 | 天津市亿博制钢有限公司 | Method for heating acid washing solution |
| CN204237870U (en) * | 2014-11-10 | 2015-04-01 | 芜湖双源管业有限公司 | A kind of pickling tank with built-in air knife |
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|---|---|---|---|---|
| JPS5982110A (en) * | 1982-11-02 | 1984-05-12 | Kawasaki Steel Corp | Descaling method of hot rolled steel sheet |
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| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN101956201A (en) * | 2009-07-16 | 2011-01-26 | 宝钢集团新疆八一钢铁有限公司 | Environment-friendly steel wire pickling bath |
| CN201538542U (en) * | 2009-10-14 | 2010-08-04 | 北京京杰锐思技术开发有限公司 | Sealing cover structure |
| CN102995040A (en) * | 2012-10-15 | 2013-03-27 | 天津市亿博制钢有限公司 | Method for heating acid washing solution |
| CN204237870U (en) * | 2014-11-10 | 2015-04-01 | 芜湖双源管业有限公司 | A kind of pickling tank with built-in air knife |
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