CN114472521B - 一种毛面酸连轧热轧酸洗板的生产方法 - Google Patents
一种毛面酸连轧热轧酸洗板的生产方法 Download PDFInfo
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- 239000002253 acid Substances 0.000 title claims abstract description 43
- 238000005096 rolling process Methods 0.000 title claims abstract description 36
- 238000004519 manufacturing process Methods 0.000 title claims abstract description 14
- 238000005554 pickling Methods 0.000 claims abstract description 23
- 239000002994 raw material Substances 0.000 claims abstract description 14
- 238000000034 method Methods 0.000 claims abstract description 5
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- 238000007788 roughening Methods 0.000 claims description 3
- 230000000903 blocking effect Effects 0.000 claims description 2
- 238000007664 blowing Methods 0.000 claims description 2
- 238000005520 cutting process Methods 0.000 claims description 2
- 238000005098 hot rolling Methods 0.000 abstract description 6
- 238000012827 research and development Methods 0.000 abstract description 2
- 239000000047 product Substances 0.000 description 11
- 229910000831 Steel Inorganic materials 0.000 description 10
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- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 description 8
- 229910052742 iron Inorganic materials 0.000 description 4
- 239000002184 metal Substances 0.000 description 4
- 229910052751 metal Inorganic materials 0.000 description 4
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- 125000003158 alcohol group Chemical group 0.000 description 1
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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
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B27/00—Rolls, roll alloys or roll fabrication; Lubricating, cooling or heating rolls while in use
- B21B27/02—Shape or construction of rolls
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B37/00—Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
- B21B37/16—Control of thickness, width, diameter or other transverse dimensions
-
- 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
- B21B45/02—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 lubricating, cooling, or cleaning
- B21B45/0239—Lubricating
- B21B45/0245—Lubricating devices
- B21B45/0248—Lubricating devices using liquid lubricants, e.g. for sections, for tubes
- B21B45/0251—Lubricating devices using liquid lubricants, e.g. for sections, for tubes for strips, sheets, or plates
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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
- B21B45/06—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 of strip material
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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
- 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
- C23G1/04—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors
- C23G1/06—Cleaning or pickling metallic material with solutions or molten salts with acid solutions using inhibitors organic inhibitors
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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
- 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
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B1/00—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations
- B21B1/38—Metal-rolling methods or mills for making semi-finished products of solid or profiled cross-section; Sequence of operations in milling trains; Layout of rolling-mill plant, e.g. grouping of stands; Succession of passes or of sectional pass alternations for rolling sheets of limited length, e.g. folded sheets, superimposed sheets, pack rolling
- B21B2001/386—Plates
Abstract
本发明提供了一种毛面酸连轧热轧酸洗板的生产方法,满足技术要求的热轧原料,经过开卷‑头尾连接‑拉矫破鳞‑酸洗‑漂洗‑烘干‑切边‑轧制‑卷取,实现毛面热轧酸洗板在酸连轧机组上生产的目的。本发明生产毛面热轧酸洗板时,充分利用酸连轧机组的设备功能,节省投资,降低风险,满足毛面热轧酸洗板的研发需要,扩大酸连轧机组生产的产品类别,在国内属于首创。
Description
技术领域
本发明属于钢铁材料工程技术领域,具体为一种毛面酸连轧热轧酸洗板的生产方法。
背景技术
经过开卷、酸洗、平整和卷取后热轧板被加工成热轧酸洗板,热轧酸洗板要求尺寸精度、表面质量、平整度介于热轧板和冷轧板之间。热轧酸洗板尺寸精度高,厚度精度完全依靠热轧原料的尺寸精度和补偿来保证,宽度精度需要热轧酸洗板生产时切边;表面质量依赖于热卷原料和酸洗质量,甚至酸洗过程中投用的缓蚀剂;平整度属于板形控制范畴,提高操作工的板形控制水平。热轧酸洗板通常采用专用线生产,如推拉式酸洗机组。
酸轧机组除供连退镀锌用原料外仍有部分富裕产能,冷硬卷为中间产品,受下游影响,售价较低,无法满足释放富裕产能的需要。为了减少投资,充分利用现有酸连轧的设备功能,扩大酸轧产品的类别,选择在酸连轧机组上生产热轧酸洗板前景广阔。
发明内容
本发明的目的是提供一种毛面酸连轧热轧酸洗板的生产方法,满足技术要求的热轧原料,经过开卷-头尾连接-拉矫破鳞-酸洗-漂洗-烘干-切边-轧制-卷取,实现毛面热轧酸洗板在酸连轧机组上生产的目的。本发明生产毛面热轧酸洗板时,充分利用酸连轧机组的设备功能,节省投资,降低风险,满足毛面热轧酸洗板的研发需要,扩大酸连轧机组生产的产品类别,在国内属于首创。
为实现上述目的,本发明采用的技术方案为:
一种毛面酸连轧热轧酸洗板的生产方法,该方法采用酸连轧机组对毛面热轧酸洗板进行酸洗、轧制处理,具体为:
(1)热卷原料CT温度560-640℃;
(2)原料厚度1.8-4.0mm,并预留厚度补偿;
(3)拉矫破鳞机延伸率0.5-1.0%;
(4)酸洗温度:70-87℃;
(5)酸洗浓度:1#槽游离酸30-80g/L,2#槽游离酸80-140g/L,3#槽游离酸140-180g/L;
(6)酸洗速度:50-200mpm;
(7)缓蚀剂流量:1-2kg/吨酸,均匀加注;
(8)边部切除10-50mm;
(9)S1-S4机架工作辊、中间辊离线;
(10)S1机架入口测厚仪投用,S1机架出口测速仪投用;
(11)S1-S4机架出口挡辊和张力计辊投用;
(12)S5机架出口测厚仪投用,S5机架出口测速仪投用;
(13)S5机架乳化液投用;
(14)S5机架使用毛化辊,粗糙度3.0-4.0μm;
(15)S5机架延伸率1.0-2.5%;
(16)S5机架乳化液吹扫投用;
(17)S5机架出口增加静电涂油机。
与现有技术相比,本发明的有益效果为:
1、热卷原料的CT温度在保证性能的条件下应尽可能低些,这样酸洗时便于去除表面的氧化铁皮。热卷原料的CT温度越高,钢带表面的氧化铁皮越致密,越难以清洗干净;CT温度越低,毛面热轧酸洗板的力学性能越高,不利于加工使用。
2、由于金属和表层氧化铁皮破损时需要的延伸不同,适当的拉矫破鳞机延伸率,使表层氧化铁皮破损而金属保持完好,酸洗时更有利于去除氧化铁皮。
3、酸液的温度、浓度和速度合理匹配时,钢带表面的氧化铁皮去除效果达到最佳。增加酸洗缓蚀剂的作用是提高钢带酸洗速度,同时降低金属被酸液溶解的速率,减少金属损失。
4、S1机架入口测厚仪、出口测速仪,S5机架出口测厚仪、出口测速仪,分别测量带钢的厚度和速度,与控制模型形成闭环系统,控制钢带的延伸率。
5、投用S1-S4机架出口挡辊和张力计辊,支撑带钢高度。
6、S5机架投用乳化液并采用毛化辊,稳定轧制,复制轧辊表面粗糙度到带钢上。
7、S5机架出口增加静电涂油机,使防锈油均匀地涂抹在钢带表面上,保护钢带防止表面锈蚀。
8、本发明毛面酸洗板的生产方法设计合理、投资少、风险低、生产稳定;采用热轧原料,经本发明破鳞、酸洗后,再通过轧制、涂油,毛面热轧酸洗板的表面质量优良,产品符合国家标准。采用本发明不仅充分利用现有酸连轧设备,扩大酸轧机组的产品类别,还可提高酸轧机组产品的产量。
具体实施方式
下面结合具体的实施例对本发明的技术方案及效果做进一步描述,但本发明的保护范围并不限于此。
实施例
本发明实施例毛面热轧酸洗板的生产方法在酸轧机组上完成,具体流程为:CT温度580℃、厚度为3.0mm的热卷原料依次经过开卷、激光焊接、拉矫破鳞、酸洗、漂洗、烘干、切边、轧制、涂油、卷取。通过破鳞、酸洗、轧制、涂油后,经检验产品的表面质量和性能等符合国标标准。表1为本发明实施例的生产方法和产品检验结果。
表1本发明实施例的生产方法和产品检验结果
注:酸洗缓蚀剂的主要成分为醇类离子型缩合物。
本发明毛面酸洗板的生产方法设计合理、投资少、风险低、生产稳定;采用热轧原料,经本发明破鳞、酸洗后,再通过轧制、涂油,毛面热轧酸洗板的表面质量优良,产品符合国家标准。采用本发明不仅充分利用现有酸连轧设备,扩大酸轧机组的产品类别,还可提高酸轧机组产品的产量。
尽管已经示出和描述了本发明的实施例,对于本领域的普通技术人员而言,可以理解在不脱离本发明的原理和精神的情况下可以对这些实施例进行多种变化、修改、替换和变型,本发明的范围由所附权利要求及其等同物限定。
Claims (1)
1.一种采用酸连轧机组生产毛面酸连轧热轧酸洗板SPHC-P的方法,其特征在于,该方法经过开卷-头尾连接-拉矫破鳞-酸洗-漂洗-烘干-切边-轧制-涂油-卷取,实现毛面热轧酸洗板在酸连轧机组上生产的目的,所生产毛面酸连轧热轧酸洗板SPHC-P的屈服强度为281MPa,抗拉强度为362MPa,伸长率为46%,具体包括:
(1)热卷原料CT温度580℃;
(2)原料厚度3.07mm,并预留厚度补偿;
(3)拉矫破鳞机延伸率0.8%;
(4)酸洗温度:83℃;
(5)酸洗浓度:1#槽游离酸50g/L,2#槽游离酸100g/L,3#槽游离酸170g/L;
(6)酸洗速度:160mpm;
(7)缓蚀剂流量:1.0kg/吨酸,均匀加注;
(8)边部切除10mm;
(9)S1-S4机架工作辊、中间辊离线;
(10)S1机架入口测厚仪投用,S1机架出口测速仪投用;
(11)S1-S4机架出口挡辊和张力计辊投用;
(12)S5机架出口测厚仪投用,S5机架出口测速仪投用;
(13)S5机架乳化液投用;
(14)S5机架使用毛化辊,粗糙度4.0μm;
(15)S5机架延伸率1. 5%;
(16)S5机架乳化液吹扫投用;
(17)S5机架出口增加静电涂油机。
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JP2001314915A (ja) * | 2000-04-28 | 2001-11-13 | Nisshin Steel Co Ltd | 酸洗鋼帯の冷間圧延機内通板方法及び装置 |
JP2002294477A (ja) * | 2001-03-29 | 2002-10-09 | Kawasaki Steel Corp | 酸洗後の表面性状に優れる熱延鋼帯の酸洗方法 |
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CN110576047A (zh) * | 2019-09-12 | 2019-12-17 | 湖南华菱涟钢薄板有限公司 | 冷轧机组全自动生产酸洗板的控制方法及控制系统 |
CN111155033A (zh) * | 2020-02-26 | 2020-05-15 | 攀钢集团攀枝花钢铁研究院有限公司 | 含b高成形性极薄规格热轧酸洗板及其制备方法 |
CN112742868A (zh) * | 2020-12-10 | 2021-05-04 | 安阳钢铁股份有限公司 | 一种普通取向硅钢六辊五机架冷连轧一次冷轧工艺 |
CN113664037A (zh) * | 2021-07-23 | 2021-11-19 | 山东钢铁集团日照有限公司 | 一种高表面清洁性冷轧if钢的生产方法 |
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