CN101947557A - Preparation method for reducing scales generated on surfaces of hot-rolled steel plates - Google Patents

Preparation method for reducing scales generated on surfaces of hot-rolled steel plates Download PDF

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Publication number
CN101947557A
CN101947557A CN2010102640324A CN201010264032A CN101947557A CN 101947557 A CN101947557 A CN 101947557A CN 2010102640324 A CN2010102640324 A CN 2010102640324A CN 201010264032 A CN201010264032 A CN 201010264032A CN 101947557 A CN101947557 A CN 101947557A
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rolled steel
steel plate
hot rolled
hot
preparation
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CN2010102640324A
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CN101947557B (en
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左军
李卫平
黄徐晶
罗击
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Pangang Group Steel Vanadium and Titanium Co Ltd
Pangang Group Research Institute Co Ltd
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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Pangang Group Steel Vanadium and Titanium Co Ltd
Pangang Group Research Institute Co Ltd
Pangang Group Panzhihua Steel and Vanadium Co Ltd
Pangang Group Panzhihua Iron and Steel Research Institute Co Ltd
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Priority to CN 201010264032 priority Critical patent/CN101947557B/en
Publication of CN101947557A publication Critical patent/CN101947557A/en
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Abstract

The invention belongs to the technical field of hot-rolled strips and relates to a method for controlling the surface quality of hot-rolled steel plates, namely a preparation method for reducing scales generated on the surfaces of the hot-rolled steel plates. The chemical components of the steel in the method have wider application range and are especially suitable for the hot-rolled steel plates containing such microalloying elements as Nb, V, Mn and Si. The hot-rolled steel plates have the following chemical components by weight: not less than 0.05% and not more than 0.20% of C, not more than 0.70% of Si, not less than 0.20% and not more than 2.00% of Mn, not less than 0.02% and not more than 0.10% of Nb, not less than 0.03% and not more than 0.15% of V, not more than 0.12% of Ti, not more than 0.040% of P, not more than 0.030% of S and the balance Fe and inevitable impurities. The control method dispenses with improvement of existing equipment, is simple and controllable in process conditions, realizes the aim of reducing the scales by controlling the slab tapping temperature, the finish rolling, initial rolling and final rolling temperature, the coiling temperature and the cooling method and has the advantages of low energy consumption, low cost and wide applicable scope.

Description

A kind of preparation method who reduces hot rolled steel plate surface generation iron scale
Technical field
The invention belongs to hot continuous rolling strip technical field, relate to a kind of hot rolled steel plate surface quality control method, promptly reduce the preparation method that the hot rolled steel plate surface generates iron scale, the scope of application of this method steel grade chemical composition is wider, is particularly useful for containing the hot rolled steel plate of Nb, V, Mn and Si microalloy element.
Background technology
Hot rolled steel plate is mainly used in the making constitutional detail, as parts such as engineering machinery, steel construction, automobile frame, compartments, intensity, toughness, plasticity to steel plate are had relatively high expectations, and its tensile strength scope is between 370~700MPa, and the microalloying mode of its steel grade is more.At present, domestic iron and steel enterprises is according to separately resources characteristic and technological equipment condition, adopts V, Ti, Nb as the microalloying element car hot rolled steel plate that steams next life usually, all has red iron oxide skin phenomenon to some extent at the finished product surface of steel plate.For a long time, in user's use,, thereby obtain user's generally approval because the red iron oxide skin does not influence the mechanical property and the processing performance of hot rolled steel plate.In recent years, because the requirement to the hot rolled steel plate surface quality is more and more harsher, and automobile frame (as crossbeam, longeron) has become appearance part by original inner part, especially it is more strict to the surface quality requirement of vehicle beam and longeron to export vehicle, and vehicle structure then becomes one of key factor of quality evaluation with the red iron oxide skin that hot rolled steel plate occurs.
According to studies show that, red iron oxide skin essence is the comparatively fine and close iron scale that is difficult to remove of a kind of structure, and it produces relevant with factors such as steel grade chemical composition, the control of rolling mill practice process temperature and band steel cooling procedures.
At present, both at home and abroad for removing the red iron oxide skin, or the report of controlling its generation is more, and " the making the method and apparatus (CN 01805403.X) of hot rolled strip " of carrying female invention as Lee of Korea S Pohang Iron and Steel Corporation provides a kind of effective ways and device of mechanically removing elevated temperature heat steel rolling belt surface iron scale; " method for cleaning of surface of steel plate and cleaning plant (CN 95190817.0) " of inventions such as Kawasaki, Japan system iron Shimizu K. K. benefit people are by being optimized to the nozzle injection pressure of descaling device, flow and with the normal angle of surface of steel plate, and scale removal effect is better; " the quick-fried method of water is removed hot-rolled steel base scale on surface technology (CN 85108549) " of Taiyuan Iron and Steel Co., Shanxi Prov invention with water as medium, the quick-fried method of water is removed the hot rolling steel billet scale on surface, and this technology is applicable to the surface removal iron scale of high-temperature hot-rolled steel billet and finished steel; The continuous casting billet lower surface is swept in the press water spray that " continuous casting billet descaling device (CN 03269581.0) " of Handan Iron ﹠ Steel Group Co., Ltd's invention utilizes sparge pipe to spray, iron scale is effectively removed, suited in the plate rolling production line that uses continuous casting billet, to install and use; " the medium thin slab continuous casting and rolling belt steel surface iron scale control method " of the Yu Yang of Angang Stock Co., Ltd etc. invention (CN200710010183.5), Composition Control exists: C 0.049-0.20, Si 0.015-0.20, Mn 0.15-1.50, P 0.009-0.013, S0.004-0.01, Nb 0-0.04, V 0-0.04, Ti 0-0.02, and surplus is Fe and trace impurity; And propose that the Si content in the steel is strict controlled in Si≤0.20% (even Si≤0.05%) and just can get up to eliminate preferably the effect of red iron oxide skin.As seen, the method of removing the red iron scale in hot rolled steel plate surface mainly contains mechanical descaling method, high-pressure water descaling method and the Si content in the steel is strict controlled in Si≤0.20%, but no matter adopt above which kind of method, the increase that all can bring the hot rolled steel plate production cost.So, how to reduce or eliminate the red iron oxide skin on hot rolled steel plate surface, again the production cost of steel plate is controlled at simultaneously a reasonable range with interior be the problem that iron and steel enterprise is worth further investigation.
Summary of the invention
The surface quality control method of a kind of hot rolled steel plate that technical problem solved by the invention provides, can reduce the hot rolled steel plate surface and generate iron scale, the scope of application of this method steel grade chemical composition is wider, is particularly useful for containing the hot rolled steel plate of Nb, V, Mn and Si microalloy element.
The hot rolled steel plate that contains Nb, V, Mn and Si microalloy element according to production technology preparation of the present invention, it is characterized in that: chemical component weight percentage is 0.05≤C≤0.20%, Si≤0.70%, 0.20%≤Mn≤2.00%, 0.02%≤Nb≤0.10%, 0.03%≤V≤0.15%, Ti≤0.12%, P≤0.040%, S≤0.030%, and surplus is iron and unavoidable impurities.The characteristics of hot rolled steel plate of the present invention on composition are: the scope of application to the hot rolled steel plate chemical composition is very wide, do not need to control the to the utmost point low degree of Si content, as need not to control Si and be lower than 0.2%, even be lower than 0.05%, still can reduce generating the relatively poor Fe of fissility 2SiO 4(2FeOSiO 2) iron scale of structure; Can also avoid controlling the smelting cost that low Si content increases.
The present invention realizes to reach control hot rolled steel plate surface quality by the following method in order to reduce hot rolled steel plate surface generation iron scale:
The chemical component weight percentage of hot rolled steel plate is 0.05≤C≤0.20%, Si≤0.70%, 0.20%≤Mn≤2.00%, 0.02%≤Nb≤0.10%, 0.03%≤V≤0.15%, Ti≤0.12%, P≤0.040%, S≤0.030%, and surplus is iron and unavoidable impurities; Its preparation method may further comprise the steps: casting slab → heating → high-pressure water descaling → roughing → Coil Box is batched → finish rolling → cool off → batch.
The improvement of process portion is:
1, heating: the control tapping temperature is 1150 ℃-1250 ℃.
2, finish rolling: start rolling temperature is controlled at 950-1050 ℃, and finishing temperature is controlled at 830 ℃-900 ℃.
3, cooling: leading portion is cold soon+type of cooling of the sparse cooling of back segment.Concrete, leading portion: the cooling velocity with 20-60 ℃/s is cooled to 650-780 ℃; Back segment: the cooling velocity with 2-20 ℃/s is cooled to 550-650 ℃.
By preparation method's control surface quality of the present invention, can reduce the hot rolled steel plate surface and generate iron scale, and the scope of application of steel grade chemical composition is wider; Need not the existing equipment transformation, the process conditions simple controllable, and have the advantage that energy consumption is low, cost is low.
To sum up, preparation method's of the present invention advantage is:
1, in view of the characteristic of hot rolled steel plate chemical composition of the present invention, preparation method of the present invention is the lower characteristics of solid solubility temperature according to the precipitated phases such as VN in the steel grade combined microalloying, can suitably reduce hot rolling tapping temperature, finish rolling inlet temperature (being start rolling temperature), finishing temperature and coiling temperature, thereby reduce the generation quantity (increasing fast) of iron scale because of iron scale can raise with temperature.
2, after the band steel goes out finishing mill, adopt leading portion cold soon+mode of the sparse cooling of back segment, thereby reduce the band steel in the time of high temperature section, it is long-pending to have increased the belt steel surface that laminar cooling water covers, stop the band steel to contact, thereby reduce the generation quantity of iron scale with oxygen in the air.Simultaneously,, help increasing the quantity of ferritic structure and the size of suitable control ferrite crystal grain, thereby improve the toughness and the punch forming performance of hot rolled steel plate because the sparse type of cooling has reduced the intensity of cooling of band steel in the laminar flow cooling procedure.
3, the temperature (being tapping temperature, finish rolling inlet temperature, finishing temperature and coiling temperature) of reduction rolling mill practice process helps reducing heating furnace energy resource consumption and burning scaling loss, has greatly reduced the rolling cost of hot rolled steel plate.
The specific embodiment
Below by specific description of embodiments of the present invention the explanation but do not limit the present invention.
Prior art is: CN200710010183.5 " medium thin slab continuous casting and rolling belt steel surface iron scale control method ".
Composition Control exists: C 0.049-0.20, Si 0.015-0.20, Mn 0.15-1.50, P 0.009-0.013, S 0.004-0.01, Nb 0-0.04, V 0-0.04, Ti 0-0.02, surplus is Fe and trace impurity.
Preparation process condition:
Heating cycle: strand is heated to 1180-1300 ℃;
Hot rolling technology: the operation of rolling is taked the elevated temperature heat rolling method, roughing start rolling temperature>1130 ℃; Finish rolling start rolling temperature>1030 ℃; Finishing temperature>880 ℃;
Process for cooling: roll back laminar flow cooling and take to force the method cooled off, 4 ℃ of cooling velocities/s-17 ℃/s;
Coiling technique: coiling temperature is controlled at 550-650 ℃.
The chemical component weight percentage of hot rolled steel plate of the present invention is: 0.05≤C≤0.20%, Si≤0.70%, 0.20%≤Mn≤2.00%, 0.02%≤Nb≤0.10%, 0.03%≤V≤0.15%, Ti≤0.12%, P≤0.040%, S≤0.030%, surplus are iron and unavoidable impurities.The preparation method may further comprise the steps: casting slab → heating → high-pressure water descaling → roughing → Coil Box is batched → finish rolling → cool off → batch.
The improvement of process portion is:
1, heating: the control tapping temperature is 1150 ℃-1250 ℃.
2, finish rolling: start rolling temperature is controlled at 950-1050 ℃, and finishing temperature is controlled at 830 ℃-900 ℃.
3, cooling: leading portion is cold soon+type of cooling of the sparse cooling of back segment.Concrete, leading portion: the cooling velocity with 20-60 ℃/s is cooled to 650-780 ℃; Back segment: the cooling velocity with 2-20 ℃/s is cooled to 550-650 ℃.
Embodiment
The chemical component weight percentage of hot rolled steel plate of the present invention is: 0.05≤C≤0.20%, Si≤0.70%, 0.20%≤Mn≤2.00%, 0.02%≤Nb≤0.10%, 0.03%≤V≤0.15%, Ti≤0.12%, P≤0.040%, S≤0.030%, surplus are iron and unavoidable impurities.According to table 1 smelt molten steel.
The chemical composition of table 1 hot rolled steel plate of the present invention (percentage by weight %)
Sequence number C Si Mn P S Nb V Ti
1 0.15 0.68 1.50 0.018 0.019 0.035 0.075 0.095
2 0.20 0.22 0.92 0.022 0.021 0.086 0.048 0.025
3 0.08 0.51 0.58 0.031 0.008 0.051 0.032 0.074
4 0.05 0.32 2.00 0.015 0.016 0.020 0.050 0.052
5 0.10 0.48 1.35 0.014 0.017 0.029 0.046 0.108
6 0.07 0.25 0.80 0.019 0.009 0.025 0.045 0
7 0.08 0.28 0.90 0.012 0.012 0.030 0.050 0
8 0.06 0.30 0.70 0.016 0.007 0.022 0.041 0
9 0.07 0.21 0.85 0.017 0.015 0.020 0.048 0
10 0.06 0.24 0.75 0.012 0.008 0.026 0.046 0
Above-mentioned five groups of molten steel are cast into the continuous casting steel billet of 200mm * (700-1300mm) * 11000mm with conventional continuous cast method with it.In walking beam furnace, heat, tapping temperature is 1150 ℃-1250 ℃, send R1 (first roughing mill) roughing mill rolling three roads through behind the high-pressure water descaling, rolling three roads of R2 (second roughing mill) roughing mill, intermediate slab thickness is at 36-40mm after the roughing.Intermediate blank adopts centreless to transfer Coil Box and batches.Send F1-F6 (sequence number of each frame of mm finishing mill unit) finishing mill to be rolled then, the finish rolling start rolling temperature is controlled at 950-1050 ℃, and the finishing temperature scope is 830 ℃-900 ℃.Cooling rate with 20-60 ℃/s after the finish rolling is cooled to 650-780 ℃, is cooled to batch in 550-650 ℃ the temperature range with the cooling rate of 2-20 ℃/s then.Finished product steel plate any surface finish does not all produce iron scale, satisfies user's instructions for use fully.The detailed process parameter sees Table 2, and mechanical property sees Table 3.
Table 2 rolling technological parameter/℃
Table 3 mechanical property

Claims (5)

1. hot rolled steel plate that contains Nb, V, Mn and Si microalloy element, it is characterized in that: chemical component weight percentage is: 0.05≤C≤0.20%, Si≤0.70%, 0.20%≤Mn≤2.00%, 0.02%≤Nb≤0.10%, 0.03%≤V≤0.15%, Ti≤0.12%, P≤0.040%, S≤0.030%, surplus are iron and unavoidable impurities.
2. one kind is reduced the preparation method that the hot rolled steel plate surface generates iron scale,
The preparation method may further comprise the steps: casting slab → heating → high-pressure water descaling → roughing → Coil Box is batched → finish rolling → cool off → batch;
Wherein, the chemical component weight percentage of hot rolled steel plate is: 0.05≤C≤0.20%, Si≤0.70%, 0.20%≤Mn≤2.00%, 0.02%≤Nb≤0.10%, 0.03%≤V≤0.15%, Ti≤0.12%, P≤0.040%, S≤0.030%, surplus are iron and unavoidable impurities;
It is characterized in that: it is 1150 ℃-1250 ℃ that furnace temperature is made in the heating time control.
3. minimizing hot rolled steel plate according to claim 2 surface generates the preparation method of iron scale, and it is characterized in that: the finish rolling start rolling temperature is controlled at 950-1050 ℃, and finishing temperature is controlled at 830 ℃-900 ℃.
4. minimizing hot rolled steel plate according to claim 2 surface generates the preparation method of iron scale, it is characterized in that: adopt leading portion cold soon+type of cooling of the sparse cooling of back segment.
5. minimizing hot rolled steel plate according to claim 2 surface generates the preparation method of iron scale, and it is characterized in that: cooling condition is: leading portion is cooled to 650-780 ℃ with the cooling velocity of 20-60 ℃/s; Back segment is cooled to 550-650 ℃ with the cooling velocity of 2-20 ℃/s.
CN 201010264032 2010-08-27 2010-08-27 Preparation method for reducing scales generated on surfaces of hot-rolled steel plates Expired - Fee Related CN101947557B (en)

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Cited By (14)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN102319742A (en) * 2011-10-08 2012-01-18 山西太钢不锈钢股份有限公司 A kind of temperature-controlled process that solves hot rolling automotive frame steel plate surface grey black
CN102416404A (en) * 2011-09-21 2012-04-18 首钢总公司 Method for producing cold-rolled steel strips
CN102699030A (en) * 2012-05-30 2012-10-03 东北大学 Preparation method of sheet billet continuous casting and rolling easy-acid washing hot rolling strip steel
CN102896161A (en) * 2012-10-22 2013-01-30 河北省首钢迁安钢铁有限责任公司 Method for removing steel hot rolling oxidized iron sheets for boracic cold rolling
CN103014487A (en) * 2011-09-20 2013-04-03 攀钢集团攀枝花钢铁研究院有限公司 Hot rolling steel plate for automobile girder, and production method thereof
CN103028608A (en) * 2011-09-30 2013-04-10 鞍钢股份有限公司 Control method of component and thickness of iron oxide scale on surface of hot rolled strip steel
CN103909104A (en) * 2014-03-24 2014-07-09 济钢集团有限公司 Method for controlling piebaldness on surface of steel plate
CN104307897A (en) * 2014-10-14 2015-01-28 首钢总公司 Process method for removing pit defects from surface of steel strip
CN104588418A (en) * 2014-11-28 2015-05-06 首钢总公司 Method for overcoming defect of pocks on surface of ultra-low carbon steel
CN105256235A (en) * 2015-11-19 2016-01-20 攀钢集团西昌钢钒有限公司 High-pressure gas cylinder steel and method for removing scale on surface of high-pressure gas cylinder steel
CN105624382A (en) * 2016-03-11 2016-06-01 攀钢集团攀枝花钢铁研究院有限公司 Hot-rolling method for V-Ti microalloyed steel
CN105921515A (en) * 2016-05-20 2016-09-07 首钢总公司 Descaling method for hot-rolled high-strength steel automobile plate
CN106544485A (en) * 2016-11-08 2017-03-29 武汉钢铁股份有限公司 The manufacture method of CSP great surface quality medium and high carbon steel
CN111036692A (en) * 2019-11-07 2020-04-21 河钢股份有限公司承德分公司 Rolling temperature control method for eliminating red rust on surface of weather-resistant steel of hot-rolled coiled plate

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040050445A1 (en) * 2002-07-10 2004-03-18 Masahiro Ohgami Steel pipe having low yield ratio
CN101147920A (en) * 2007-11-06 2008-03-26 攀钢集团攀枝花钢铁研究院 Hot rolled steel plate surface oxidation iron sheet control method for vanadium-containing automobile beam
CN100443201C (en) * 2007-01-25 2008-12-17 鞍钢股份有限公司 Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate
CN101008043B (en) * 2006-01-27 2010-05-12 宝山钢铁股份有限公司 Process for producing ferritic stainless steel

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
US20040050445A1 (en) * 2002-07-10 2004-03-18 Masahiro Ohgami Steel pipe having low yield ratio
CN101008043B (en) * 2006-01-27 2010-05-12 宝山钢铁股份有限公司 Process for producing ferritic stainless steel
CN100443201C (en) * 2007-01-25 2008-12-17 鞍钢股份有限公司 Surface iron scale control method for middle sheet billet continuous casting and rolling steel plate
CN101147920A (en) * 2007-11-06 2008-03-26 攀钢集团攀枝花钢铁研究院 Hot rolled steel plate surface oxidation iron sheet control method for vanadium-containing automobile beam

Non-Patent Citations (2)

* Cited by examiner, † Cited by third party
Title
《中国重型装备》 20091231 杨瑞宇 沙钢1450 mm热带钢轧机结构设计 参见第11页2轧线主要设备结构特征及技术参数及图1 2-5 , 第4期 *
杨瑞宇: "沙钢1450 mm热带钢轧机结构设计", 《中国重型装备》, no. 4, 31 December 2009 (2009-12-31) *

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CN103014487A (en) * 2011-09-20 2013-04-03 攀钢集团攀枝花钢铁研究院有限公司 Hot rolling steel plate for automobile girder, and production method thereof
CN102416404A (en) * 2011-09-21 2012-04-18 首钢总公司 Method for producing cold-rolled steel strips
CN103028608A (en) * 2011-09-30 2013-04-10 鞍钢股份有限公司 Control method of component and thickness of iron oxide scale on surface of hot rolled strip steel
CN102319742A (en) * 2011-10-08 2012-01-18 山西太钢不锈钢股份有限公司 A kind of temperature-controlled process that solves hot rolling automotive frame steel plate surface grey black
CN102699030A (en) * 2012-05-30 2012-10-03 东北大学 Preparation method of sheet billet continuous casting and rolling easy-acid washing hot rolling strip steel
CN102896161B (en) * 2012-10-22 2016-01-13 北京首钢股份有限公司 A kind of minimizing technology of boracic cold-rolled steel hot rolling iron scale
CN102896161A (en) * 2012-10-22 2013-01-30 河北省首钢迁安钢铁有限责任公司 Method for removing steel hot rolling oxidized iron sheets for boracic cold rolling
CN103909104A (en) * 2014-03-24 2014-07-09 济钢集团有限公司 Method for controlling piebaldness on surface of steel plate
CN104307897A (en) * 2014-10-14 2015-01-28 首钢总公司 Process method for removing pit defects from surface of steel strip
CN104588418A (en) * 2014-11-28 2015-05-06 首钢总公司 Method for overcoming defect of pocks on surface of ultra-low carbon steel
CN105256235A (en) * 2015-11-19 2016-01-20 攀钢集团西昌钢钒有限公司 High-pressure gas cylinder steel and method for removing scale on surface of high-pressure gas cylinder steel
CN105256235B (en) * 2015-11-19 2017-07-07 攀钢集团西昌钢钒有限公司 The minimizing technology of steel alloy for high-pressure tank and its scale on surface
CN105624382A (en) * 2016-03-11 2016-06-01 攀钢集团攀枝花钢铁研究院有限公司 Hot-rolling method for V-Ti microalloyed steel
CN105921515A (en) * 2016-05-20 2016-09-07 首钢总公司 Descaling method for hot-rolled high-strength steel automobile plate
CN105921515B (en) * 2016-05-20 2018-10-19 首钢集团有限公司 Hot-rolling high-strength steel Automobile Plate descaling method
CN106544485A (en) * 2016-11-08 2017-03-29 武汉钢铁股份有限公司 The manufacture method of CSP great surface quality medium and high carbon steel
CN106544485B (en) * 2016-11-08 2018-07-03 武汉钢铁有限公司 The manufacturing method of thin slab continuous casting and rolling great surface quality medium and high carbon steel
CN111036692A (en) * 2019-11-07 2020-04-21 河钢股份有限公司承德分公司 Rolling temperature control method for eliminating red rust on surface of weather-resistant steel of hot-rolled coiled plate

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