WO2001061073A2 - Method and device for pickling rolled metal, in particular steel strip - Google Patents
Method and device for pickling rolled metal, in particular steel strip Download PDFInfo
- Publication number
- WO2001061073A2 WO2001061073A2 PCT/EP2001/001683 EP0101683W WO0161073A2 WO 2001061073 A2 WO2001061073 A2 WO 2001061073A2 EP 0101683 W EP0101683 W EP 0101683W WO 0161073 A2 WO0161073 A2 WO 0161073A2
- Authority
- WO
- WIPO (PCT)
- Prior art keywords
- pickling
- measured values
- coil
- scale
- measured
- Prior art date
Links
Classifications
-
- 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
-
- 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
- C23G1/00—Cleaning or pickling metallic material with solutions or molten salts
- C23G1/02—Cleaning or pickling metallic material with solutions or molten salts with acid solutions
- C23G1/08—Iron or steel
Definitions
- the invention relates to a method and a device for pickling metal, in particular steel strip, which is fed to a controlled pickling process.
- a method for pickling a metal strip is known from DE 19743 022 A1, which is based on a measurement in the direction of flow behind the pickling system and in which pickling parameters are set according to defect categories that the measuring device detects, such as Temperature of the pickling liquid, throughput speed of the metal strip, the acid content in the pickling liquid, the metal content, in particular the iron content, strip parameters, e.g. Material and geometrical dimensions.
- the defects can only be determined retrospectively and conclusions can be drawn about a cheaper stain.
- the controlled system only covers the pickling system itself.
- EP 0482725 A1 Another known method (EP 0482725 A1) works with turbulent flows which are generated in the pickling tank by nozzles. The aim is to achieve an optimal pickling result with minimal consumption of pickling medium. This result is to be achieved by regulating the turbulence of the flow in the pickling medium as a function of the throughput speed of the strip to be pickled. Further effects are not expected.
- Another method for pickling a rolled strip in a pickling plant is known from EP 0602437 B1. The process is based on a special mode of operation of several pickling tanks connected in series.
- An acidic pickling medium is injected into the pickling tank via injection nozzles arranged at least on the side, above and below the belt running level on the pool, the nozzles being variably controlled and the pickling medium being input in any desired quantity.
- the acid concentration and / or the medium temperature and / or the nozzle outlet speed of the pickling medium can be preselected.
- the object of the invention is to carry out the pickling process not only on the basis of the usual pickling parameters, but also to take additional parameters outside the pickling tank into account.
- the object is achieved according to the invention in that the pickling process in addition to the pickling medium parameters is regulated on the basis of parameters of the coil and / or the metal strip that have been determined and / or measured before the metal strip enters the pickling part.
- the advantage is to set the pickling parameters in advance so that under or over pickling is avoided, the acid concentration and the acid supply are set correctly and the pickling medium is used economically so that the correct temperature can be calculated in advance together with other pickling parameters to be set in advance. After casting, hot forming and after annealing removed scale, pre-descaling and other deposits can already be taken into account.
- the invention therefore also takes into account the fact that the scale has broken up (via stretch bending straighteners), with cracks and pores in the scale layer which enlarge the surface wetted by acid.
- the amount of scale to be dissolved in the pickling process can be reduced, so that the pickling time is reduced depending on the type of pre-descaling can be. If the temperature of the metal strip is increased before it runs into the stain, the contact time between the strip surface and the pickling medium is extended at the optimum pickling temperature. The heating distance of the metal strip is shortened and the pickling time is reduced. The pickling time also decreases if the scale is removed by laser optics before entering the pickle and the amount of scale to be removed is reduced.
- the method is used in such a way that the pickling process is preset with measured values of a coil on the basis of a built-up calculation model and on the basis of a control calculation model that at least measures values for scale; Strip temperature; Pickling medium temperature and / or acid concentration is taken into account, is regulated.
- the amount of scale needs e.g. no longer being valued, as has been the case so far.
- the goal of such an optimization can be: minimal energy consumption, more variable coil sequences, accelerated reaction to the type and amount of surface contamination, minimization of pickling consumption and pickling losses, minimization of over-pickling and minimization of under-pickling.
- measuring devices for detecting the scale its layer thickness, shape, distribution and color can be used. Exact calculation models are used for this.
- actuators of the pickling are regulated or readjusted. This enables regulation of the pickling section with the shortest possible transmission times.
- the procedure is such that additional measured values for scale deposits or deposits are recorded in an area in the direction of movement in front of the pickling part and are used for readjusting the actuators of the pickling part and / or for comparing measured or calculated values. Additional parameters outside the pickling section are taken into account in that the pickling times are regulated based on the strip entrance information of the coil and the machine setting.
- Another method step provides that the recorded measured values via the deposits or the scale are used for regulating a pretreatment unit upstream of the pickling part.
- the pickling medium can be regulated even more precisely in its parameters due to the pretreatment unit.
- pretreatment unit and the actuators of the pickling part are readjusted in comparison with the measured or calculated values.
- the device for pickling rolled metal, in particular steel strip, which can be fed in the treatment direction from a coil of a pickling system, for which a control of several parameters is provided solves the task in that coil measurement or information sensors have a structure - Computational model Measured values can be switched to the control units of the pickling section using a control computing model. This allows the pickling section to be operated more economically and more precisely, which leads to the advantages mentioned.
- measured values from coil measured value sensors can be entered into the control calculation model.
- the construction computing model uses general input information for the metal strip. From this, scale orders can already be calculated using calculation approaches to preset or adjust the slow and fast actuators of the pickling section.
- measured values from a transducer via the linings or the scale can be used to readjust the actuator of the pickling part.
- the pickling part is preceded by a pretreatment unit, the measured values of which can be input into the control computing model.
- the pretreatment unit can influence the pickling time if the necessity is recognized and the coil information and the current machine setting are evaluated appropriately.
- the pretreatment unit can be a preheating unit, a mechanical, an abrasive, a hydromechanical, a laser-optical or a vibration descaler.
- a further improvement is given by the fact that an induction heater for the strip is switched on between the pretreatment unit and the pickling part.
- the inductive preheating of the metal strip is switched on before the pickling and is used to quickly regulate the metal strip temperature and to set the metal strip pickling temperature.
- Fig. 1 is a block diagram of the coil and pickling plant with control in one
- FIG. 3 shows the block diagram in a second variant with a pretreatment unit
- Fig. 4 shows the block diagram in a third variant with the transducer and the pretreatment unit and
- Fig. 5 shows the block diagram in a fourth variant with the sensor, the pretreatment unit and an induction heater.
- the metal strip 1 runs from a coil 2 into the pickling section 3.
- coil information 4 is input by an information sensor 4a and an information sensor 4b into a superstructure computing model 6 and / or into a control computing model 8 and processed according to the program. Further measured values 7 can be taken into account in the construction computing model 6.
- the pickling process is regulated on the basis of parameters of the coil 2 and / or the metal strip 1 that have been determined and / or measured with actuators before the metal strip 1 enters the pickling part 3 within the machine 5.
- a scale determination 10 On the basis of a first variant according to FIG. 2, in addition to the presetting of the pickling parameters, additionally measured values about the deposits or the scale are processed in a scale determination 10 with a measurement sensor M in the control computing model 8.
- the pickling process is preset in each case (FIGS. 1 to 5) on the basis of the built-up computing model 6 with measured values of the coil 2 and is regulated on the basis of the regulating computing model 8, which takes into account at least measured values for scale, bath temperature, pickling medium temperature and / or acid concentration.
- the additionally measured values for scale deposits in front of the pickling part 3 are used to regulate or readjust the actuators in the machine 5.
- a pretreatment unit H which influences the pickling time.
- the slow and fast actuators of the pickling part 3 are readjusted in the comparison of measured or calculated values from the control computing model 8, in particular taking into account the changed pickling times.
- a third variant additional measured values for scale deposits or deposits are recorded in parallel by the measurement sensor M of the scale detector 10 in the direction of movement 9 in front of the pickling part 3 and for the adjustment of the members of the pickling part 3 and / or used in the comparison of measured or calculated values.
- the pickling times are regulated on the basis of strip input information from coil 2 and the machine setting.
- the measured values recorded on the deposits or the scale are used to regulate a pretreatment unit H upstream of the pickling part 3.
- the pre-treatment unit H and the actuators of the pickling part 3 are readjusted in comparison with the measured or calculated values.
- an induction heater W is switched on between the pickling part 3 and the pretreatment unit H in addition to the scale detection 10 and the pretreatment unit H.
- the pickling time is defined as the contact time between the surface to be cleaned and the pickling medium, which is necessary to reliably remove the dirt from the metal strip 1.
- the pretreatment unit H can also accommodate the preheating unit in the form of the induction heater W.
- the pretreatment unit H basically has a mechanical, abrasive, hydromechanical, laser-optical or vibration-technical descaler.
- An inductive preheating of the metal strip 1 by the induction heater W is installed in front of the pickling part 3 and serves to quickly regulate the metal strip and the pickling medium temperature.
Landscapes
- Chemical & Material Sciences (AREA)
- 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)
- ing And Chemical Polishing (AREA)
Abstract
Description
Claims
Priority Applications (8)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
JP2001559906A JP2003528978A (en) | 2000-02-16 | 2001-02-15 | Method and apparatus for pickling rolled metal strips, especially steel strips |
CA002399754A CA2399754A1 (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
KR1020027008889A KR20020077879A (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
AU2001246436A AU2001246436A2 (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
SK1185-2002A SK11852002A3 (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
EP01919285A EP1257687A2 (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
AU4643601A AU4643601A (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
BR0107950-6A BR0107950A (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, especially steel strip |
Applications Claiming Priority (4)
Application Number | Priority Date | Filing Date | Title |
---|---|---|---|
DE10007080.9 | 2000-02-16 | ||
DE10007080 | 2000-02-16 | ||
DE10062869.9 | 2000-12-16 | ||
DE10062869A DE10062869A1 (en) | 2000-02-16 | 2000-12-16 | Method and device for pickling rolled metal, in particular steel strip |
Publications (2)
Publication Number | Publication Date |
---|---|
WO2001061073A2 true WO2001061073A2 (en) | 2001-08-23 |
WO2001061073A3 WO2001061073A3 (en) | 2002-04-25 |
Family
ID=26004374
Family Applications (1)
Application Number | Title | Priority Date | Filing Date |
---|---|---|---|
PCT/EP2001/001683 WO2001061073A2 (en) | 2000-02-16 | 2001-02-15 | Method and device for pickling rolled metal, in particular steel strip |
Country Status (12)
Country | Link |
---|---|
US (1) | US20030015259A1 (en) |
EP (1) | EP1257687A2 (en) |
JP (1) | JP2003528978A (en) |
CN (1) | CN1401015A (en) |
AU (2) | AU4643601A (en) |
BR (1) | BR0107950A (en) |
CA (1) | CA2399754A1 (en) |
CZ (1) | CZ20022770A3 (en) |
PL (1) | PL362146A1 (en) |
RU (1) | RU2002124590A (en) |
SK (1) | SK11852002A3 (en) |
WO (1) | WO2001061073A2 (en) |
Cited By (3)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1167577A2 (en) * | 2000-06-30 | 2002-01-02 | SMS Demag AG | Process and apparatus for automatically detecting scale on metallic strip surfaces, in particular hot rolled steel or stainless steel strip |
KR100899687B1 (en) * | 2002-08-23 | 2009-05-28 | 주식회사 포스코 | Descaling method of hot coil |
WO2010006895A1 (en) * | 2008-07-16 | 2010-01-21 | Siemens Aktiengesellschaft | Operating method for a processing device processing a metal strip and system for processing a metal strip |
Families Citing this family (11)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN102220595A (en) * | 2011-05-31 | 2011-10-19 | 马鞍山钢铁股份有限公司 | Induction heating method and device for acid washing of hot rolled steel strip |
CN106238470A (en) * | 2015-06-09 | 2016-12-21 | 宝山钢铁股份有限公司 | Consider the pickling time forecasting procedure of straightening scale breading effect |
CN107923050B (en) * | 2015-07-22 | 2019-12-31 | 寇林公司 | Oxide skin adjusting method for optimizing high-strength carbon steel alloy |
CN105648460B (en) * | 2016-03-14 | 2018-02-13 | 佛山市网冠金属制品有限公司 | A kind of intelligent spray system and method |
CN106825080A (en) * | 2017-01-11 | 2017-06-13 | 首钢京唐钢铁联合有限责任公司 | Method for removing red rust defect of steel for automobile plate |
IT201700056336A1 (en) * | 2017-05-24 | 2018-11-24 | Danieli Off Mecc | CLEANING SYSTEM FOR METAL PRODUCTS |
DE102018117475A1 (en) * | 2018-07-19 | 2020-01-23 | Sms Group Gmbh | Pickling line for surface treatment of steel strips |
JP7307815B2 (en) * | 2019-04-25 | 2023-07-12 | スペイラ ゲゼルシャフト ミット ベシュレンクテル ハフツング | Surface treatment of flat products made of aluminum alloys, including color measurement |
JP7448673B2 (en) * | 2020-02-18 | 2024-03-12 | ポスコホールディングス インコーポレーティッド | Process control system and its operating method |
CN111519194B (en) * | 2020-03-27 | 2022-02-11 | 佛山津西金兰冷轧板有限公司 | Cold-rolled sheet manufacturing process |
CN115044917B (en) * | 2022-06-21 | 2023-10-03 | 北京首钢冷轧薄板有限公司 | Method and device for determining pickling speed of hot rolled strip steel |
Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4325746A (en) * | 1979-10-01 | 1982-04-20 | Olin Corporation | System for cleaning metal strip |
FR2701410A1 (en) * | 1993-02-12 | 1994-08-19 | Clecim Sa | Installation for pickling a metal strip |
US5800694A (en) * | 1995-02-15 | 1998-09-01 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Process and plant for pickling materials made of steel, in particular stainless steel |
US6096137A (en) * | 1997-03-03 | 2000-08-01 | Hitachi, Ltd. | Pickling plant and method of controlling the same |
Family Cites Families (5)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
KR900007072B1 (en) * | 1985-03-15 | 1990-09-28 | 신닛뽄 세이데쓰 가부시끼가이샤 | Method and apparatus for manufacturing coldrolled steel strip |
US5175502A (en) * | 1990-09-14 | 1992-12-29 | Armco Steel Company, L.P. | Method and apparatus for determining acid concentration |
JPH05202419A (en) * | 1992-01-27 | 1993-08-10 | Kawasaki Steel Corp | Method for descaling hot rolled silicon steel plate |
DE19743022A1 (en) * | 1997-09-29 | 1999-04-01 | Siemens Ag | Method and device for pickling a metal strip |
US6450183B1 (en) * | 1999-12-22 | 2002-09-17 | Kolene Corporation | Composition, apparatus, and method of conditioning scale on a metal surface |
-
2001
- 2001-02-15 RU RU2002124590/02A patent/RU2002124590A/en unknown
- 2001-02-15 BR BR0107950-6A patent/BR0107950A/en not_active Application Discontinuation
- 2001-02-15 WO PCT/EP2001/001683 patent/WO2001061073A2/en not_active Application Discontinuation
- 2001-02-15 US US10/203,846 patent/US20030015259A1/en not_active Abandoned
- 2001-02-15 CN CN01805176A patent/CN1401015A/en active Pending
- 2001-02-15 CZ CZ20022770A patent/CZ20022770A3/en unknown
- 2001-02-15 SK SK1185-2002A patent/SK11852002A3/en unknown
- 2001-02-15 JP JP2001559906A patent/JP2003528978A/en not_active Withdrawn
- 2001-02-15 EP EP01919285A patent/EP1257687A2/en not_active Withdrawn
- 2001-02-15 AU AU4643601A patent/AU4643601A/en active Pending
- 2001-02-15 AU AU2001246436A patent/AU2001246436A2/en not_active Abandoned
- 2001-02-15 PL PL36214601A patent/PL362146A1/en not_active Application Discontinuation
- 2001-02-15 CA CA002399754A patent/CA2399754A1/en not_active Abandoned
Patent Citations (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
US4325746A (en) * | 1979-10-01 | 1982-04-20 | Olin Corporation | System for cleaning metal strip |
FR2701410A1 (en) * | 1993-02-12 | 1994-08-19 | Clecim Sa | Installation for pickling a metal strip |
US5800694A (en) * | 1995-02-15 | 1998-09-01 | Andritz-Patentverwaltungs-Gesellschaft M.B.H. | Process and plant for pickling materials made of steel, in particular stainless steel |
US6096137A (en) * | 1997-03-03 | 2000-08-01 | Hitachi, Ltd. | Pickling plant and method of controlling the same |
Non-Patent Citations (2)
Title |
---|
DOERNEMANN A G: "MODEL-BASED CONTROL SYSTEM FOR PICKLING LINES" IRON AND STEEL ENGINEER, ASSOCIATION OF IRON AND STEEL ENGINEERS. PITTSBURGH, US, Bd. 74, Nr. 1, 1997, Seiten 47-50, XP000640997 ISSN: 0021-1559 * |
PATENT ABSTRACTS OF JAPAN vol. 017, no. 644 (C-1134), 30. November 1993 (1993-11-30) & JP 05 202419 A (KAWASAKI STEEL CORP), 10. August 1993 (1993-08-10) * |
Cited By (4)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
EP1167577A2 (en) * | 2000-06-30 | 2002-01-02 | SMS Demag AG | Process and apparatus for automatically detecting scale on metallic strip surfaces, in particular hot rolled steel or stainless steel strip |
EP1167577B1 (en) * | 2000-06-30 | 2008-04-16 | SMS Demag AG | Process and apparatus for automatically detecting scale on metallic strip surfaces, in particular hot rolled steel or stainless steel strip |
KR100899687B1 (en) * | 2002-08-23 | 2009-05-28 | 주식회사 포스코 | Descaling method of hot coil |
WO2010006895A1 (en) * | 2008-07-16 | 2010-01-21 | Siemens Aktiengesellschaft | Operating method for a processing device processing a metal strip and system for processing a metal strip |
Also Published As
Publication number | Publication date |
---|---|
WO2001061073A3 (en) | 2002-04-25 |
AU4643601A (en) | 2001-08-27 |
CN1401015A (en) | 2003-03-05 |
SK11852002A3 (en) | 2002-12-03 |
US20030015259A1 (en) | 2003-01-23 |
CZ20022770A3 (en) | 2003-03-12 |
BR0107950A (en) | 2004-01-06 |
AU2001246436A2 (en) | 2001-08-27 |
CA2399754A1 (en) | 2001-08-23 |
RU2002124590A (en) | 2004-03-20 |
JP2003528978A (en) | 2003-09-30 |
PL362146A1 (en) | 2004-10-18 |
EP1257687A2 (en) | 2002-11-20 |
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