WO2013174232A1 - 一种冷态金属板带表面处理系统及其处理方法 - Google Patents
一种冷态金属板带表面处理系统及其处理方法 Download PDFInfo
- Publication number
- WO2013174232A1 WO2013174232A1 PCT/CN2013/075789 CN2013075789W WO2013174232A1 WO 2013174232 A1 WO2013174232 A1 WO 2013174232A1 CN 2013075789 W CN2013075789 W CN 2013075789W WO 2013174232 A1 WO2013174232 A1 WO 2013174232A1
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- WIPO (PCT)
- Prior art keywords
- descaling
- metal plate
- roller
- strip
- surface treatment
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Classifications
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B45/00—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B45/04—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing
- B21B45/08—Devices for surface or other treatment of work, specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills for de-scaling, e.g. by brushing hydraulically
Definitions
- the present invention relates to the field of surface treatment of metal strips, and in particular to a cold metal strip surface treatment system and a treatment method thereof, the cold metal strip surface treatment system and the treatment method thereof are mainly used for realizing
- the continuous descaling of the full plate surface of the cold metal strip is effective, and the invention can effectively improve the descaling efficiency of the jet descaling and the stability of the descaling effect.
- the surface crack of the material is not easily found in advance, so that the finished product has a quality problem; on the other hand, it is easy to press the scale into the metal surface, causing surface quality problems.
- the presence of hard oxides can accelerate the wear of the rolls or the drawing machine. Therefore, the process of removing the surface of the steel sheet before entering the cold rolling mill is one of the necessary processes on the cold rolling line.
- the method includes, for example, electrolytic grinding descaling, discharge descaling, electron beam descaling, laser descaling, grinding descaling, shot blasting, repeated bending descaling, and the combination of the above different methods.
- Scale method the high-pressure jet descaling technology is the fastest growing, and its industrialization process is becoming more and more obvious.
- this jet method has the following main problems in the scale surface after descaling due to the unique descaling method:
- JP 061 08277A discloses a descaling process using a combination of a spray acid and a brush roll on a continuous cold rolling line
- Japanese JP55034688A discloses a combined PV rolling broken scale-mixed abrasive high pressure jet.
- the present invention aims to provide a novel cold metal strip surface treatment system and a treatment method thereof, the cold metal strip surface treatment system and the treatment method thereof for high pressure jet removal of a metal strip
- the scale cleaning by setting the tension unit, the bending roller unit, and the jetting and cleaning unit, realizes the synchronization of the front and back of the strip and the effective descaling at high speed.
- the front and rear tensioning devices are used to provide sufficient tension to the metal strip, and at the same time, the bending of the front and back sides of the strip is used to perform the respective bending of the front and back surfaces, and the bending is performed.
- the pulling side of the steel plate is subjected to descaling spraying, followed by water washing and spraying, so that the repeated treatment of the plurality of units realizes the synchronization of the front and back surfaces of the metal strip, continuous descaling, and the strip after descaling
- the compressed air is purged on the front and back sides, and the front and back sides of the strip are kept dry after descaling to meet the requirements of the next step.
- the high-pressure jet descaling section 6 is characterized by:
- a tensioning unit and a stabilizing roller 21 are disposed before the high-pressure jet descaling section 6, and a stabilizing roller 22, a compressed air drying device 7 and a tensioning unit are disposed after the high-pressure jet descaling section 6;
- the dephosphorization unit comprising: first and second bending rolls 51, 52 for realizing bending of the metal strip 8 and corresponding first and second The two jet descaling nozzles 31, 32, the first and second flushing nozzle groups 41, 42.
- the tensioning unit is a tensioning roller set 1 for effecting tensioning of the metal strip 8 in this process section to achieve a predetermined level of tension.
- the stabilizing roller is used to achieve plate stability when the metal strip 8 enters the jet descaling section 6 and is output from the descaling section 6.
- the two bending rolls in the descaling unit 6 are respectively used to realize a bending roll 51 in which the metal strip 8 is bent upward and a bending roll 52 for realizing the downward bending of the metal strip 8.
- the compressed air drying device 7 is configured to purify and dry the front and back surfaces of the metal strip 8.
- a cold metal strip surface treatment system characterized in that
- the high pressure jet descaling section 6 is provided with two descaling units, namely a first descaling unit 6-1 and a second descaling unit 6-2.
- a cold metal strip surface treatment system characterized in that
- the second bending roll 52 is disposed opposite to the first bending roll 51, and the roll face height of the second bending roll 52 is maintained at a height difference from the roll face height of the stabilizing roll 21, and the range of the height difference is usually in the range of It is kept between 1 mm and 50 mm, preferably 20 mm.
- a cold metal strip surface treatment system characterized in that
- the roll diameters of the first and second bending rolls 51, 52 vary depending on the specification level of the metal strip 8, and generally the peripheral roll diameter is 50 mm to 500 mm.
- the object of the present invention is to provide: a cold metal sheet surface treatment method, which uses the above-mentioned cold metal strip surface treatment system for high-pressure jet descaling cleaning of metal strips, including high-pressure jet descaling Segment 6, which is characterized in that
- a tensioning unit and a stabilizing roller 21 are disposed before the high-pressure jet descaling section 6, and a stabilizing roller 22, a compressed air drying device 7 and a tensioning unit are disposed after the high-pressure jet descaling section 6;
- At least one descaling unit is disposed in the high-pressure jet descaling section 6, the dephosphorization unit includes: first and second bending rollers 51 for realizing bending of the metal strip 8 , and first and second jet descaling nozzles 31, 32 and corresponding first and second flushing nozzle groups 41, 42.
- the metal strip 8 is tensioned by the tensioning unit and enters the descaling unit, through the first and second bending rolls 51, After the bending of 52 and the corresponding first and second jet descaling nozzles 31, 32, the first and second cleaning nozzles 41, 42, the scales on the upper and lower surfaces of the metal strip 8 are simultaneously removed.
- the temperature of the cold rolled metal strip 8 is not higher than 200 °C.
- a cold metal sheet surface treatment method characterized in that
- the bending roller 52 is disposed in the opposite manner to the one-side bending roller 51, and the roller surface height of the one-side bending roller 52 is maintained at the same height as the roller surface height of the stabilizer roller 21.
- a cold metal sheet surface treatment method characterized in that
- the unit tension level provided by the tensioning unit 1 to the metal strip 8 is usually maintained at 0. IMpa ⁇ 1 0 read pa level.
- a cold metal sheet surface treatment method characterized in that
- the roll diameters of the first and second bending rolls 51, 52 are different according to the specification level of the metal strip 8, and generally the peripheral roll diameter value is usually 5 Omm ⁇ 500 mm;
- a cold metal sheet surface treatment method characterized in that
- the first and second jet descaling nozzle units 31, 32 are high pressure jet nozzles, which typically include at least one jetting medium comprising at least water (H20) and sand-like hard particles.
- the detailed description of the sand-like hard particles may include and be selected from natural corundum abrasives (such as brown corundum, white corundum, single crystal corundum, etc.), carbide abrasives (such as black silicon carbide, green silicon carbide, boron carbide, etc.). ), metal pellets such as steel pellets and wire cutting pellets.
- natural corundum abrasives such as brown corundum, white corundum, single crystal corundum, etc.
- carbide abrasives such as black silicon carbide, green silicon carbide, boron carbide, etc.
- metal pellets such as steel pellets and wire cutting pellets.
- a cold metal sheet surface treatment method characterized in that
- the first and second jet descaling units 31, 32 have a particle size range and an injection pressure which are generally different due to different injection targets, and the injection pressure of the aqueous medium is between 5 Mpa and 8 reading pa, sand hard
- the particle size range of the particles ranges from 10 mesh to 120 mesh.
- the first and second rinsing nozzles 41, 42 are usually a single medium water, the water medium must meet the factory's net water standard, the temperature is below 100 ° C, and the pH is between 6. 5 and 9. And the injection pressure level is usually 0. IMpa ⁇ 5Mpa.
- the compressed medium of the compressed air spraying unit 7 is a single compressed air, and the air medium is usually a compressed gas after drying, and the pressure ranges from 0. O lMpa to 1 read pa.
- the cold metal strip surface treatment system and the treatment method thereof according to the invention can be used to replace the existing metal strip cold continuous descaling pickling unit to meet the modern continuous cold metal strip high speed, even
- the continuity feature does not affect the original production capacity of the production line. That is to realize the synchronous and continuous descaling of the front and back sides of the metal strip, and at the same time, the compressed air is purged on the front and back sides of the strip after descaling, and the front and back sides of the strip are kept dry after descaling to meet the next step. Board requirements. DRAWINGS
- FIG. 1 is a process layout diagram of a continuous curved jet descaling disclosed in the present disclosure
- Figure 2 is a process layout diagram of tensioning using a three-roll tensioning unit
- Figure 3 is the overall process layout of the tensioning machine directly using the unwinder and the coiler.
- 1 tension unit, 6 jet descaling section, 21, 22 are first and second stabilizing roller sets, 31, 32 are first and second jet descaling nozzle units, respectively, 41, 42 are respectively first
- the second jet flushing unit, 51, 52 are first and second side bending rolls, 6-1, 6-2 are first and second jet descaling units, 7 compressed air purging device, and 8 metal plates, respectively.
- Belt, 9 three tension rollers, 10 zero unwinder, 11 coiler, 12, 1 3 other process stages that can be connected in series. detailed description
- the continuous descaling process scheme is specifically shown in FIG. 1 to FIG. 3, and in order to ensure the jet-flow continuous descaling process disclosed in the present case has good effects, the following measures are mainly adopted:
- the side bending rolls 51, 52 disposed inside the jet descaling unit 6 ensure that the metal strip 8 forms a certain wrap angle on the roll surface by its own small roll diameter and roll surface height difference, thereby causing a metal strip 8
- the side attachments form a crack, which facilitates jet descaling;
- corresponding jet descaling units 31, 32 are arranged in the area of each of the side bending rollers 51, 52 to realize jet descaling on one side of the bent and tensioned metal strip 8;
- a jet flushing unit 41, 42 is arranged to wash the surface of the stripped metal strip 8 to ensure that no significant hard residue remains on the surface of the strip 8 .
- the continuous descaling of the cold steel plate is taken as an example, as follows:
- the billet is rolled after being rolled by a hot rolling mill, and then it needs to be continuous before entering the cold rolling mill. Descaling, at this time, the steel coil 8 realizes the continuous processing of the head and tail welding under the action of the production line front equipment, that is, the steel sheet 8 becomes an infinite length continuous steel plate 8 before entering the bending roll group 1, the temperature thereof Not higher than 200 ° C, after entering the tension roller set 1, the strip 8 is kept in tension under the tension of the tension roller set 1.
- the strip 8 is bent and tensioned on the upper roller surface of the side bending roller 51, and the upper surface of the strip 8 is composited by tension and bending. Under the action, the surface is slightly cracked.
- the mixed jet nozzle 31 is sprayed with the garnet under the driving of the high-pressure water medium, and then sprayed onto the surface of the strip 8 to remove the scale on the upper surface of the strip 8 and remove
- the rear strip 8 is immediately flushed by the pure water of the rinsing nozzle 41, so that the upper surface scale of the strip 8 is completely removed, so that the stripped strip 8 sequentially enters the other side bending roll 52, in the same manner.
- the lower surface of the strip 8 is removed from the scale.
- the upper and lower surfaces of the strip 8 realize the removal of the scale, and the stripped strip 8 passes through the drying and purging unit 7 in sequence, purging
- the unit 7 uses the dry compressed air with a pressure of 0. 5Mpa to synchronously purge and dry the front and back sides of the strip 8 so that the upper and lower descaling plates of the strip 8 are dried to ensure that they enter the next process.
- the segment does not affect the treatment effect of the next process segment, such as rolling, coating, etc.
- the strip 8 directly realizes the tensioning action of the strip 8 by using two "S"-shaped roller sets arranged one behind the other, using two stabilizing rollers arranged inside the tensioning unit 1
- the units 21, 22 realize that the actual height of the strip 8 is consistent with the process height; at the same time, by using two sub-units 61, 62 arranged in parallel in the jet descaling unit 6, the front and back sides of the strip 8 are simultaneously descaled, and
- the de-scaled strip 8 enters the drying unit 7 to effect surface drying of the strip 8.
- the second embodiment can be seen in FIG. 2, the strip 8 realizes the tensioning action of the strip 8 by means of two three-roll tensioning units arranged one behind the other, using two stabilizing roller units 21 arranged inside the tensioning unit 1. 22, the actual height of the strip 8 is consistent with the process height; at the same time, the front and back sides of the strip 8 are synchronously descaled by the jet descaling unit 6, and the stripped steel 8 enters the drying unit 7 to realize the strip The surface of 8 is dried.
- the third embodiment can be referred to FIG. 3, and the strip 8 utilizes the uncoiler unit and the coiler unit arranged in front and rear to ensure the tension level of the strip 8, and the jet descaling unit 6 is used to synchronize the front and back surfaces of the strip 8.
- Descaling, and the de-scaled strip 8 enters the drying unit 7 to achieve surface drying of the strip 8; in this arrangement, other process equipment 12 may be disposed before the jet descaling unit 6, the process equipment Including head and tail shears, welders, loopers, etc., and can be arranged by other processes after the drying unit 7
- the process equipment can include a looper, a flying shear, a rolling mill or a coating unit.
- Cold rolled sheet metal strip 8 (metal strip with a temperature not higher than 200 °C, such as steel plate, aluminum plate, titanium plate, etc.) runs through the roller to the inlet of the tensioning unit 1, through the inlet roller set of the tensioning roller set 1. Thereafter, the inlet stabilizing roller 21 is sequentially introduced, and the stabilizing action of the inlet stabilizing roller 21 ensures that the metal strip 8 is always maintained at the level required by the process.
- the metal strip 8 enters the jet descaling unit 6 in sequence (the descaling unit 6 is composed of a plurality of sub-units 61, 62, etc., and the arrangement and function of each sub-unit 61, 62 are completely identical), and the metal strip 8 is stabilized.
- the roller 21 then sequentially enters the first subunit 61 of the jet descaling unit 6, and the metal strip 8 first passes through the one-side bending roller 51 inside the subunit 61, and the height of the upper roller surface of the one-side bending roller 51 is stabilized and stabilized.
- the thus treated metal strip 8 sequentially enters the other one-side bending roll 52 of the sub-unit 61, the bending roll 52 being disposed opposite to the one-side bending roll 51, and the roll height of the one-side bending roll 52 The height of the roll surface of the stabilizing roller 21 is maintained at the same level.
- the difference a2 directly determines the roll angle of the metal strip 8 on the one-side bending roll 52, and the roll diameter of the one-side bending roll 52 determines the radius of curvature of the metal strip 8 when bent, so that when the metal strip 8 is After maintaining the tension level required by the process, the unilateral surface of the metal strip 8 under the tension of the one-side bending roll 52 is inevitably significantly tensioned, thereby causing the surface of the side to be attached to the crop (such as scales).
- the jet descaling nozzle 32 disposed on the side sprays the side plate surface with a high-pressure jet, so that the scale is easily removed, and the surface of the metal strip 8 after the removal is passed through the flushing nozzle arranged on the side. 42
- the surface residue is rinsed to ensure that the side of the metal strip 8 is descaled and remains free of adhering residue.
- the metal strip 8 is to maintain a higher speed and high efficiency of scale removal, and the jet descaling unit 6 is usually connected in series with other descaling units 62 to ensure that the stripping speed of the strip 8 is faster. Scale better result.
- the tensioning method of the tensioning unit 1 generally includes an S roller tensioning method, a three-roll tensioning method (a three-roll tensioning unit is respectively arranged at the inlet and the outlet of the metal strip 8), or directly adopts opening and winding.
- the device is tensioned; the unit tension level provided by the tensioning unit 1 to the metal strip 8 is generally maintained at 0. IMpa ⁇ 1 0 read pa level.
- the roll diameters of the one-side bending rolls 51, 52 vary depending on the specification level of the metal strip 8, and generally the peripheral roll diameter value is usually from 50 mm to 500 mm.
- the jet descaling nozzle units 31, 32 are high pressure jet nozzles which typically include at least one jetting medium comprising at least water (H20) and sand-like hard particles.
- the sand-like hard particles sprayed by the jet descaling units 31, 32 may specifically include natural corundum abrasives (such as brown corundum, white corundum, single crystal corundum, etc.), and carbide abrasives (such as black silicon carbide). , green silicon carbide, boron carbide, etc., steel pellets, steel wire cutting pills and other metal processing pills.
- natural corundum abrasives such as brown corundum, white corundum, single crystal corundum, etc.
- carbide abrasives such as black silicon carbide.
- green silicon carbide, boron carbide, etc. steel pellets, steel wire cutting pills and other metal processing pills.
- the water medium sprayed in the jet descaling units 31 and 32 has a water quality standard of industrial net circulating water at normal temperature, and can be specifically described as follows: the temperature is below 100 ° C, and the pH is between 6. 5 and 9.
- the jet descaling units 31, 32 have a particle size range and an injection pressure which are usually slightly different depending on the object to be sprayed, and the injection pressure of the aqueous medium is usually between 5 Mpa and 8 reading pa, and another hard particle is used.
- the particle size range is usually between 10 and 120 mesh.
- the rinsing nozzles 41, 42 are usually a single medium water, the water medium must meet the factory's net water standard, the temperature is below 100 ° C, the PH value is 6.5 ⁇ 9 , and the injection pressure level is usually It is 0. IMpa ⁇ 5Mpa.
- the compressed medium of the compressed air spraying unit 7 is a single compressed air, and the air medium is usually a compressed gas after drying, and the pressure ranges from 0. O lMpa to 1 read pa.
- the scale treatment can also be applied to the continuous descaling of metal strips, metal tubes, metal rods, all of which are modified by the above-described embodiments after reading this specification by those of ordinary skill in the art, All fall within the scope of protection of the present invention.
- the cold metal strip surface treatment system and the processing method thereof according to the invention can be used to replace the existing metal strip cold continuous descaling pickling unit to meet the high speed and continuity characteristics of the modern continuous cold metal strip. Does not affect the original production capacity of the production line.
- the compressed air is purged on the front and back sides of the strip, and the front and back sides of the strip are kept dry after descaling to meet the requirements of the next step.
- the invention has broad application prospects in the field of cold rolling production.
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Abstract
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Priority Applications (4)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| DE112013000850.5T DE112013000850T5 (de) | 2012-05-25 | 2013-05-17 | Oberflächenbearbeitungssystem für ein Blechband in kaltem Zustand und Bearbeitungsverfahren für dasselbe |
| US14/382,086 US9604268B2 (en) | 2012-05-25 | 2013-05-17 | Cold state metal plate strip surface treatment system and treatment method of the same |
| JP2014559080A JP2015511890A (ja) | 2012-05-25 | 2013-05-17 | 冷間金属帯板表面処理システムおよびその処理方法 |
| KR1020147023297A KR101789267B1 (ko) | 2012-05-25 | 2013-05-17 | 냉간 상태 금속판 스트립 표면 처리 시스템 및 표면 처리 방법 |
Applications Claiming Priority (2)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN201210165950.0A CN103418623B (zh) | 2012-05-25 | 2012-05-25 | 一种冷态金属板带表面处理系统及其处理方法 |
| CN201210165950.0 | 2012-05-25 |
Publications (1)
| Publication Number | Publication Date |
|---|---|
| WO2013174232A1 true WO2013174232A1 (zh) | 2013-11-28 |
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| Application Number | Title | Priority Date | Filing Date |
|---|---|---|---|
| PCT/CN2013/075789 Ceased WO2013174232A1 (zh) | 2012-05-25 | 2013-05-17 | 一种冷态金属板带表面处理系统及其处理方法 |
Country Status (6)
| Country | Link |
|---|---|
| US (1) | US9604268B2 (zh) |
| JP (1) | JP2015511890A (zh) |
| KR (1) | KR101789267B1 (zh) |
| CN (1) | CN103418623B (zh) |
| DE (1) | DE112013000850T5 (zh) |
| WO (1) | WO2013174232A1 (zh) |
Cited By (1)
| Publication number | Priority date | Publication date | Assignee | Title |
|---|---|---|---|---|
| CN113000616A (zh) * | 2021-03-16 | 2021-06-22 | 秦皇岛市国阳钢铁有限公司 | 轧线氧化铁皮回收装置及回收方法 |
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|---|---|---|---|---|
| CN105880199A (zh) * | 2016-04-06 | 2016-08-24 | 北京中冶设备研究设计总院有限公司 | 一种磨料射流带钢双面清洗装置及方法 |
| WO2018110944A1 (ko) * | 2016-12-12 | 2018-06-21 | 주식회사 포스코 | 표면 처리 장치 |
| CN107350974A (zh) * | 2017-09-12 | 2017-11-17 | 刘媛婷 | 一种小斜度双腔室脉动射流柔性金属表面清理系统 |
| TR201901954A2 (tr) * | 2019-02-08 | 2019-03-21 | Ilhan Demir Celik Ve Boru Profil Enduestrisi A S | SOĞUK HADDELENMİŞ SICAK RULO SAC (CHRC) ve SOĞUK HADDELENMİŞ SICAK SAC (CHR) ÜRETİM YÖNTEMİ |
| CN112743456B (zh) * | 2020-11-27 | 2022-04-08 | 北京电子科技职业学院 | 一种带钢无酸除鳞装置 |
| CN116550778A (zh) * | 2023-05-17 | 2023-08-08 | 武汉乾冶工程技术有限公司 | 一种金属板带表面刷洗实验系统 |
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| US8128460B2 (en) | 2006-09-14 | 2012-03-06 | The Material Works, Ltd. | Method of producing rust inhibitive sheet metal through scale removal with a slurry blasting descaling cell |
| US8074331B2 (en) | 2006-09-14 | 2011-12-13 | The Material Works, Ltd. | Slurry blasting apparatus for removing scale from sheet metal |
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- 2013-05-17 WO PCT/CN2013/075789 patent/WO2013174232A1/zh not_active Ceased
- 2013-05-17 KR KR1020147023297A patent/KR101789267B1/ko active Active
- 2013-05-17 US US14/382,086 patent/US9604268B2/en active Active
- 2013-05-17 JP JP2014559080A patent/JP2015511890A/ja active Pending
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| Publication number | Priority date | Publication date | Assignee | Title |
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| CN113000616A (zh) * | 2021-03-16 | 2021-06-22 | 秦皇岛市国阳钢铁有限公司 | 轧线氧化铁皮回收装置及回收方法 |
Also Published As
| Publication number | Publication date |
|---|---|
| KR101789267B1 (ko) | 2017-10-23 |
| US20150143862A1 (en) | 2015-05-28 |
| DE112013000850T5 (de) | 2014-11-13 |
| CN103418623B (zh) | 2016-06-01 |
| US9604268B2 (en) | 2017-03-28 |
| JP2015511890A (ja) | 2015-04-23 |
| CN103418623A (zh) | 2013-12-04 |
| KR20140113741A (ko) | 2014-09-24 |
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