WO2017104926A1 - 산세장치 및 산세방법 - Google Patents
산세장치 및 산세방법 Download PDFInfo
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- WO2017104926A1 WO2017104926A1 PCT/KR2016/008279 KR2016008279W WO2017104926A1 WO 2017104926 A1 WO2017104926 A1 WO 2017104926A1 KR 2016008279 W KR2016008279 W KR 2016008279W WO 2017104926 A1 WO2017104926 A1 WO 2017104926A1
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- pickling
- tank
- pickling solution
- solution
- tanks
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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
- C23G3/024—Apparatus for cleaning or pickling metallic material for cleaning wires, strips, filaments continuously by a combination of dipping and spraying
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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
- C23G3/025—Details of the apparatus, e.g. linings or sealing means
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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
- C23G3/027—Associated apparatus, e.g. for pretreating or after-treating
- C23G3/029—Associated apparatus, e.g. for pretreating or after-treating for removing the pickling fluid from the objects
Definitions
- the present invention relates to a pickling apparatus and a pickling method, and a pickling apparatus and a pickling method for removing the scale of the steel sheet.
- hot rolled steel sheet is deposited on a plurality of pickling tanks in which pickling solutions are accommodated to remove scale through chemical reactions with pickling solutions.
- a plurality of pickling tanks 10 are sequentially arranged as shown in FIG. 1, and the plurality of pickling tanks 10 are disposed in the steel sheet 1. Deposition proceeds to remove scale.
- the plurality of pickling tanks 10 have different concentrations of pickling solutions contained in each tank, and are deposited in the pickling tank 10 at the front end and then transferred to the pickling tank 10 at the front end. As the pickling solution contained in) is buried in the steel plate 1 and enters the pickling tank 10 at the rear end, it affects the concentration of the pickling tank 10 at the rear end.
- a ringer roll (W) is disposed between the plurality of pickling tanks (10), and the ringer roll (W) is a pair of two pressing the steel sheet (1) from the upper side, the lower side to the steel sheet ( The pickling solution in 1) is squeezed out to remove the pickling solution entering the pickling tank 10 at the rear end.
- the ringer roll (W) is made of a rubber material, due to uneven wear of the steel sheet (1) will cause uneven wear.
- the ringer roll W in which uneven wear occurs is caused by causing the pickling tank 10 to be inclined by meandering the steel sheet 1 to be advanced, and at the same time, lowering the pickling speed.
- the ringer roll (W) has a limitation that the productivity is reduced due to the repair cost and replacement time of about 2 months life.
- the present invention has been made to solve the above problems, and an object thereof is to provide a pickling device and a pickling method configured to remove a ringer roll disposed between a plurality of pickling tanks.
- a pickling device the pickling tank is disposed, the steel plate is sequentially deposited as the steel plate proceeds to remove the scale of the steel plate;
- An intermediate injection unit disposed between the pickling tank at the front end and the pickling tank at the rear end to spray the pickling solution on the steel sheet;
- pickling solution providing means configured to provide a pickling solution of a concentration used in the pickling tank at a later stage to the intermediate injection unit, wherein the ringer roll disposed between the plurality of pickling tanks is removed.
- the pickling solution providing means a plurality of tanks disposed to correspond to each of the plurality of pickling tanks, circulation tank for maintaining the pickling solution level of the pickling tank while the corresponding pickling tank and the pickling solution is circulated; And a supply line for supplying pickling solution to the intermediate injection unit from the circulation tank at the rear end corresponding to the pickling tank at the rear end.
- the present invention further comprises a pickling solution transfer means for transferring the pickling solution injected by the intermediate spray unit to the circulation tank of the front end corresponding to the pickling tank of the front end, the pickling solution transfer means, A connection chamber in which the intermediate spray unit is built while connecting the pickling tank to the pickling tank at a rear end thereof; And a transfer line connected to the circulation tank at the front end corresponding to the pickling tank at the front end from the connection chamber and transferring the pickling solution injected by the intermediate injection unit.
- the present invention is connected to the circulation tank of the foremost end and the circulation tank of the last end of the plurality of circulation tanks, regenerate the pickling solution discharged from the circulation tank of the foremost stage and put into the circulation tank of the last stage
- the pickling solution regeneration unit further comprises a circulation structure of the pickling solution, wherein the flow rate of the pickling solution injected by the intermediate spraying unit is adjusted by the pickling solution regeneration unit. It may be the same or larger compared to the flow rate.
- a support roll may be disposed between the plurality of pickling tanks to prevent the steel sheet.
- the plurality of pickling tanks may have a higher concentration of the pickling solution accommodated toward the rear end side.
- a scale removal step of sequentially depositing a plurality of pickling tanks as the steel sheet proceeds to remove the scale of the steel sheet;
- the intermediate injection step of spraying the pickling solution to the steel sheet by an intermediate injection unit;
- a pickling solution providing step configured to provide a pickling solution having a concentration used in the pickling tank at a rear stage before the intermediate spraying step to the intermediate spraying unit; a ringer roll disposed between the plurality of pickling tanks.
- the pickling solution providing step a plurality of arranged in correspondence with each of the plurality of pickling tanks, the rear end of the circulation tank for maintaining the pickling solution level of the pickling tank while the corresponding pickling tank and the pickling solution is circulated
- Pickling solution may be supplied to the intermediate injection unit from the circulation tank of the rear end corresponding to the pickling tank.
- the present invention is connected to the pickling tank of the front end and the pickling tank of the rear end of the pickling solution sprayed by the intermediate injection unit in the connection chamber in which the intermediate injection unit is built-in of the front end corresponding to the pickling tank of the front end
- a pickling solution transfer step of transferring to the circulation tank may be further included.
- the present invention by the pickling solution regeneration unit connected to the circulation tank of the foremost end and the circulation tank of the last end of the plurality of circulation tanks, by regenerating the pickling solution discharged from the circulation tank of the foremost end And a pickling solution circulating step to be introduced into the circulation tank, wherein the flow rate of the pickling solution injected by the intermediate spray unit includes a flow rate of the pickling solution introduced into the circulation tank of the last stage from the pickling solution regeneration unit. May be the same or larger in comparison.
- the pickling apparatus and the pickling method according to the present invention are configured to spray the pickling solution of the concentration used in the pickling tank at the rear stage by the intermediate spray unit and the pickling solution providing means to the steel plate between the pickling tank at the front stage and the pickling tank at the rear stage.
- the shape of the steel sheet is removed while removing the ringer roll disposed between the plurality of pickling tanks while washing the pickling solution from the pickling tank in the front pickling tank instead of the ringer roll so that the concentration of the pickling tank at the rear end is not affected.
- FIG. 1 is a schematic view showing a pickling apparatus according to the prior art.
- Figure 2 is a schematic diagram showing a pickling apparatus according to an embodiment of the present invention.
- Figure 2 is a schematic diagram showing a pickling apparatus according to an embodiment of the present invention.
- the pickling apparatus is a pickling tank 100, the intermediate spray unit 200 for spraying the pickling solution to the steel plate (1), and the pickling solution to the intermediate spray unit 200 It includes a pickling solution providing means 300 to provide.
- the main structural features of the present invention pickling buried in the steel sheet 1 in the pickling tank 100 of the front end in place of the ringer roll while removing the ringer roll disposed between the plurality of pickling tanks 100.
- the intermediate spray unit 200 and the pickling solution providing means 300 are configured so that the pickling solution concentration of the pickling tank 100 of the rear stage is not affected by the solution.
- the present invention is configured by the intermediate injection unit 200 and the pickling solution providing means 300, by removing the ringer roll disposed between the plurality of pickling tank 100, the problems and limitations caused by the ringer roll It can be overcome.
- the ringer roll is a rubber material, and the wear occurs due to a shape defect of the steel sheet 1, and the steel sheet 1 is meandered due to such uneven wear, thereby causing a defect in the pickling tank 100 and increasing the pickling speed. It has a problem of lowering, and furthermore has a limit of lowering productivity due to repair cost and replacement time according to maintenance.
- the pickling solution of the concentration used in the pickling tank 100 of the rear end between the pickling tank 100 of the front end and the pickling tank 100 of the rear end is configured to spray on the steel sheet (1).
- the intermediate injection unit 200 is configured to spray the pickling solution to the steel sheet 1, disposed between the pickling tank 100 of the front end and the pickling tank 100 of the rear end in the arrangement structure side, the pickling The solution providing means 300 is characterized in that the intermediate injection unit 200 is configured to provide a pickling solution of the concentration used in the pickling tank 100 of the rear end.
- the pickling solution buried in (1) can be removed before the steel sheet 1 is moved to the pickling tank 100 at the rear end.
- the intermediate spray unit 200 receives the pickling solution having a concentration used in the pickling tank 100 at the rear end by the pickling solution providing means 300, and the pickling tank 100 at the front end and the pickling tank at the rear end ( By spraying the steel sheet 1 between 100, the pickling solution buried in the steel sheet 1 in the pickling tank 100 at the front end can be removed by washing.
- the pickling solution sprayed by the intermediate spraying unit 200 may be buried in the pickling tank 100 at the rear end by being buried in the steel sheet 1, and the pickling solution sprayed by the intermediate spraying unit 200 may be By the same concentration as the pickling solution used in the pickling tank 100, the pickling solution concentration of the pickling tank 100 at the rear end does not affect at all.
- the pickling solution providing means 300 is a circulation tank 310 connected to the pickling tank 100, and a supply line 320 connecting the circulation tank 310 and the intermediate spray unit 200. ) May be provided.
- a plurality of circulation tanks 310 are disposed to correspond to each of the plurality of pickling tanks 100, and the pickling solution level of the pickling tank 100 is maintained while the corresponding pickling tank 100 and the pickling solution are circulated. Is configured to.
- the circulation tank 310 is connected to each of the inlet line 110 and the outlet line 120 of the pickling tank 100, the heat exchanger 111 is installed in the inlet line 110 and the outlet line
- the flow control valve 121 is installed at 120.
- the pickling solution which is used in the pickling tank 100 and exchanges heat with the steel sheet 1, is dropped into the circulation tank 310 through the outlet line 120 of the pickling tank 100, and then the inflow pump 112.
- the flow control valve 121 serves to continuously maintain the proper level of pickling solution in the pickling tank (100).
- the supply line 320 is an intermediate spray unit 200 disposed between the pickling tank 100 at the front end and the pickling tank 100 at the front end, and the circulation tank at the rear end corresponding to the pickling tank 100 at the rear end. Connect 310.
- the supply line 320 is a pickling solution from the rear end circulation tank 310 corresponding to the pickling tank 100 of the rear end, the pickling tank 100 of the front end and the pickling tank 100 of the rear end by the supply pump 321. It serves to supply to the intermediate injection unit 200 disposed between.
- the present invention may further include a pickling solution transfer means 400 for transferring the pickling solution injected by the intermediate spray unit 200 to the circulation tank 310 of the front end corresponding to the pickling tank 100 of the front end.
- a pickling solution transfer means 400 for transferring the pickling solution injected by the intermediate spray unit 200 to the circulation tank 310 of the front end corresponding to the pickling tank 100 of the front end. Can be.
- a connection line 30 is formed between a plurality of pickling tanks 10 and a circulation tank 20 corresponding to the pickling tanks 10, thereby providing a circulation tank 20 at a rear end thereof.
- the pickling solution transferring means 400 is a pickling solution sprayed by the intermediate injection unit 200 as shown in FIG. It serves to transfer to the circulation tank 310 of the front end corresponding to the pickling tank 100 of the front end.
- the pickling solution transfer means 400 is connected to the pickling tank 100 of the front end and the pickling tank 100 of the rear end, the connection chamber 410 in which the intermediate injection unit 200 is built, and the connection chamber ( It may be provided with a transfer line 420 is connected to the circulation tank 310 of the front end corresponding to the pickling tank 100 of the front end from 410 to transfer the pickling solution sprayed by the intermediate injection unit 200.
- the pickling solution injected by the intermediate spray unit 200 may be collected in the connection chamber 410 and transferred to the circulation tank 310 of the front end through the transfer line 420.
- the pickling solution used in the pickling tank 100 of the front end is lower than the pickling solution used in the pickling tank 100 of the rear end, the pickling solution sprayed by the intermediate spray unit 200 is a steel sheet (1)
- the pickling solution transferred to the circulation tank 310 at the front end is almost the same concentration as the circulation tank 310 at the front end.
- the present invention further includes a pickling solution regeneration unit 500 to achieve a circulation structure of the pickling solution, wherein the pickling solution regeneration unit 500 includes a circulation tank 310 at the foremost end of the plurality of circulation tanks 310. ) And the last end circulation tank 310, the pickling solution discharged from the front end circulation tank 310 through the discharge line 510 is recycled to the last end circulation tank 310. It plays a role of input through).
- the flow rate of the pickling solution injected by the intermediate spraying unit 200 is equal to the flow rate of the pickling solution injected from the pickling solution regeneration unit 500 into the circulation tank 310 at the end. Larger is preferred.
- the intermediate spray unit 200 is configured to transfer the pickling solution regeneration unit 500 from the front end circulation tank 310 to the rear end circulation tank 310 rather than the flow rate of the pickling solution injected into the circulation tank 310 at the last stage. If the flow rate of the pickling solution sprayed by a) decreases, the pickling solution overflows from the rear end circulation tank 310, and if the flow rate increases, the pickling solution overflows from the front end circulation tank 310.
- the flow rate of the pickling solution injected by the intermediate spray unit 200 is preferably the same as the flow rate of the pickling solution supplied from the pickling solution regeneration unit 500 to the last circulation tank 310.
- the spraying by the intermediate spraying unit 200 is performed.
- the flow rate of the pickling solution to be used is more preferably larger than the flow rate of the pickling solution supplied to the circulation tank 310 from the pickling solution regeneration unit 500 by the flow rate that is buried in the steel plate 1 and moved.
- the support roll 600 may be disposed to support the steel sheet 1 between the plurality of pickling tanks 100.
- the support roll 600 may have a structure of preventing the steel sheet 1 from being prevented between the pickling tanks 100.
- the pickling tank 100 of the present invention is disposed so that the steel plate 1 is sequentially deposited so that the scale of the steel sheet 1 is removed, the concentration of the pickling solution accommodated toward the rear end is increased. . Accordingly, the scale removal efficiency may be increased in the process of sequentially depositing the steel sheet 1 on the plurality of pickling tanks 100 arranged so that the concentration of the pickling solution is increased.
- the scale removing step of sequentially depositing the plurality of pickling tanks 100 to remove the scale of the steel sheet 1 is performed.
- an intermediate spraying step is performed between the pickling tank 100 at the front end and the pickling tank 100 at the rear end by spraying the pickling solution on the steel sheet 1 by the intermediate spraying unit 200. do.
- a pickling solution providing step configured to provide the pickling solution of the concentration used in the pickling tank 100 at the rear stage to the intermediate spraying unit 200 is performed.
- the ringer roll disposed between the plurality of pickling tanks 100 may be removed through the pickling method of the present invention.
- a plurality of pickling tanks are disposed to correspond to each of the plurality of pickling tanks 100, and the pickling solution level of the pickling tank 100 is maintained while the corresponding pickling tank 100 and the pickling solution are circulated.
- Pickling solution is supplied to the intermediate injection unit 200 from the circulation tank 310 of the rear end corresponding to the pickling tank 100 of the rear end of the circulation tank 310 to be.
- the present invention may further include a pickling solution transfer step to transfer the pickling solution from the circulation tank 310 of the rear end to the circulation tank 310 of the front end.
- the intermediate pickling unit 100 is sprayed by the intermediate spraying unit 200 in the connection chamber 410 in which the intermediate spraying unit 200 is built while connecting the pickling tank 100 of the front end and the pickling tank 100 of the rear end.
- the pickling solution is transferred to the circulation tank 310 of the front end corresponding to the pickling tank 100 of the front end.
- the present invention may further include a pickling solution circulation step by the pickling solution regeneration unit 500, wherein the flow rate of the pickling solution injected by the intermediate injection unit 200 is from the pickling solution regeneration unit 500.
- the flow rate control may be equal to or greater than the flow rate of the pickling solution introduced into the last circulation tank 310.
- the pickling solution regeneration unit 500 connected to the foremost circulation tank 310 and the foremost circulation tank 310 of the plurality of circulation tanks 310, the circulation of the foremost stage
- the pickling solution discharged from the tank 310 is regenerated and introduced into the circulation tank 310 of the last stage.
- the pickling apparatus and the pickling method of the present invention as described above, the pickling solution of the concentration used in the pickling tank 100 of the rear stage by the intermediate spray unit 200 and the pickling solution providing means 300 It is configured to spray the steel plate 1 between the pickling tank 100 and the pickling tank 100 at the rear end, thereby removing the ringer rolls disposed between the plurality of pickling tanks 100 while replacing the pickling rolls at the front end of the pickling tanks.
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Abstract
Description
Claims (10)
- 복수 개가 배치되며, 강판이 진행되면서 순차적으로 침적되어 상기 강판의 스케일이 제거되는 산세탱크;전단의 상기 산세탱크와 후단의 상기 산세탱크 사이에 배치되어, 상기 강판에 산세용액을 분사하는 중간분사유닛; 및후단의 상기 산세탱크에서 사용되는 농도의 산세용액을 상기 중간분사유닛에 제공하도록 구성되는 산세용액제공수단;을 포함하여,복수 개의 상기 산세탱크 사이에 배치되는 링거롤이 제거된 산세장치.
- 제1항에 있어서,상기 산세용액제공수단은,복수 개의 상기 산세탱크 각각과 대응되게 복수 개가 배치되어, 대응되는 상기 산세탱크와 산세용액이 유통되면서 상기 산세탱크의 산세용액 수위를 유지시키는 순환탱크;후단의 상기 산세탱크에 대응되는 후단의 상기 순환탱크로부터 산세용액을 상기 중간분사유닛에 공급하는 공급라인;을 구비하는 것을 특징으로 하는 산세장치.
- 제2항에 있어서,상기 중간분사유닛에 의해 분사된 산세용액을 전단의 상기 산세탱크에 대응되는 전단의 상기 순환탱크로 이송하는 산세용액이송수단;을 더 포함하며,상기 산세용액이송수단은,전단의 상기 산세탱크와 후단의 상기 산세탱크를 연결하면서 상기 중간분사유닛이 내장된 연결챔버; 및상기 연결챔버로부터 전단의 상기 산세탱크에 대응되는 전단의 상기 순환탱크에 연결되어, 상기 중간분사유닛에 의해 분사된 산세용액을 이송하는 이송라인;을 구비하는 것을 특징으로 하는 산세장치.
- 제3항에 있어서,복수 개의 상기 순환탱크 중 최전단의 상기 순환탱크 및 최후단의 상기 순환탱크와 연결되어, 최전단의 상기 순환탱크로부터 배출된 산세용액을 재생시켜 최후단의 상기 순환탱크에 투입하는 산세용액재생유닛;을 더 포함하여 산세용액의 순환구조를 이루며,상기 중간분사유닛에 의해 분사되는 산세용액의 유량은, 상기 산세용액재생유닛으로부터 최후단의 상기 순환탱크에 투입되는 산세용액의 유량과 비교하여 동일하거나 더 큰 것을 특징으로 하는 산세장치.
- 제1항 내지 제4항 중 어느 한 항에 있어서,복수 개의 상기 산세탱크 사이에는 상기 강판을 상방지지하는 지지롤이 배치된 것을 특징으로 하는 산세장치.
- 제1항 내지 제4항 중 어느 한 항에 있어서,복수 개의 상기 산세탱크는 후단 측으로 갈수록 수용된 산세용액의 농도가 높아지는 것을 특징으로 하는 산세장치.
- 강판이 진행되면서 복수 개의 산세탱크에 순차적으로 침적되어 상기 강판의 스케일이 제거되는 스케일제거단계;상기 스케일제거단계 과정 중, 전단의 상기 산세탱크와 후단의 상기 산세탱크 사이에서, 중간분사유닛에 의해 산세용액을 상기 강판에 분사하는 중간분사단계; 및상기 중간분사단계 이전에, 후단의 상기 산세탱크에서 사용되는 농도의 산세용액을 상기 중간분사유닛에 제공하도록 구성되는 산세용액제공단계;를 포함하여,복수 개의 상기 산세탱크 사이에 배치되는 링거롤이 제거된 산세방법.
- 제7항에 있어서,상기 산세용액제공단계는,복수 개의 상기 산세탱크 각각과 대응되게 복수 개가 배치되어, 대응되는 상기 산세탱크와 산세용액이 유통되면서 상기 산세탱크의 산세용액 수위를 유지시키는 순환탱크 중, 후단의 상기 산세탱크에 대응되는 후단의 상기 순환탱크로부터 산세용액을 상기 중간분사유닛에 공급하는 것을 특징으로 하는 산세방법.
- 제8항에 있어서,전단의 상기 산세탱크와 후단의 상기 산세탱크를 연결하면서 상기 중간분사유닛이 내장된 연결챔버에서 상기 중간분사유닛에 의해 분사된 산세용액을 전단의 상기 산세탱크에 대응되는 전단의 상기 순환탱크로 이송하는 산세용액이송단계;를 더 포함하는 것을 특징으로 하는 산세방법.
- 제9항에 있어서,복수 개의 상기 순환탱크 중 최전단의 상기 순환탱크 및 최후단의 상기 순환탱크와 연결된 산세용액재생유닛에 의해, 최전단의 상기 순환탱크로부터 배출된 산세용액을 재생시켜 최후단의 상기 순환탱크에 투입하는 산세용액순환단계;를 더 포함하며,상기 중간분사유닛에 의해 분사되는 산세용액의 유량은, 상기 산세용액재생유닛으로부터 최후단의 상기 순환탱크에 투입되는 산세용액의 유량과 비교하여 동일하거나 더 큰 것을 특징으로 하는 산세방법.
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EP16875868.8A EP3392381A4 (en) | 2015-12-18 | 2016-07-28 | DETACHING APPARATUS AND STRIPPING METHOD |
US16/062,560 US10704151B2 (en) | 2015-12-18 | 2016-07-28 | Pickling apparatus and pickling method |
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WO2020015950A1 (de) * | 2018-07-19 | 2020-01-23 | Sms Group Gmbh | Beizanlage zur oberflächenbehandlung von bandstahl |
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KR101898175B1 (ko) * | 2017-04-27 | 2018-09-12 | 주식회사 포스코 | 산세 공정용 탱크 |
KR101917531B1 (ko) | 2017-08-17 | 2018-11-09 | 주식회사 포스코 | 산세장치 |
KR20190071466A (ko) | 2017-12-14 | 2019-06-24 | 주식회사 포스코 | 산세 장치 및 이 장치의 제어 방법 |
KR102178741B1 (ko) | 2020-03-11 | 2020-11-13 | 주식회사 포스코 | 산세 장치 및 이 장치의 제어 방법 |
CN111663145A (zh) * | 2020-06-08 | 2020-09-15 | 浦项(张家港)不锈钢股份有限公司 | 喷射酸洗系统、奥氏体不锈钢冷轧酸洗工艺及不锈钢 |
CN111926341B (zh) * | 2020-09-04 | 2022-09-30 | 海盐金鼎钢管股份有限公司 | 一种钢管全自动酸洗线 |
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JP6664492B2 (ja) | 2020-03-13 |
US10704151B2 (en) | 2020-07-07 |
CN108368621B (zh) | 2020-05-01 |
KR101696108B1 (ko) | 2017-01-13 |
JP2018537593A (ja) | 2018-12-20 |
US20180371626A1 (en) | 2018-12-27 |
CN108368621A (zh) | 2018-08-03 |
EP3392381A1 (en) | 2018-10-24 |
EP3392381A4 (en) | 2019-01-16 |
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