CN105903763B - 冷轧板的生产方法 - Google Patents
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- 238000004519 manufacturing process Methods 0.000 title claims abstract description 20
- 229910000831 Steel Inorganic materials 0.000 claims abstract description 29
- 239000010959 steel Substances 0.000 claims abstract description 29
- 238000005096 rolling process Methods 0.000 claims abstract description 13
- 238000005238 degreasing Methods 0.000 claims abstract description 12
- 239000000839 emulsion Substances 0.000 claims abstract description 12
- 238000000137 annealing Methods 0.000 claims abstract description 11
- 238000001816 cooling Methods 0.000 claims abstract description 8
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims abstract description 8
- 235000019628 coolness Nutrition 0.000 claims abstract description 4
- 238000002791 soaking Methods 0.000 claims abstract description 4
- XEEYBQQBJWHFJM-UHFFFAOYSA-N Iron Chemical compound [Fe] XEEYBQQBJWHFJM-UHFFFAOYSA-N 0.000 claims description 6
- 229910052742 iron Inorganic materials 0.000 claims description 3
- 239000000463 material Substances 0.000 claims description 3
- 230000009467 reduction Effects 0.000 claims description 3
- 238000000034 method Methods 0.000 abstract description 6
- 239000000758 substrate Substances 0.000 abstract description 2
- 230000009286 beneficial effect Effects 0.000 description 4
- 238000005516 engineering process Methods 0.000 description 2
- 230000006872 improvement Effects 0.000 description 2
- 239000000243 solution Substances 0.000 description 2
- ATJFFYVFTNAWJD-UHFFFAOYSA-N Tin Chemical compound [Sn] ATJFFYVFTNAWJD-UHFFFAOYSA-N 0.000 description 1
- 230000008901 benefit Effects 0.000 description 1
- 238000010924 continuous production Methods 0.000 description 1
- 230000005489 elastic deformation Effects 0.000 description 1
- 238000002347 injection Methods 0.000 description 1
- 239000007924 injection Substances 0.000 description 1
- 238000003801 milling Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 201000009240 nasopharyngitis Diseases 0.000 description 1
- 238000007747 plating Methods 0.000 description 1
- 230000008569 process Effects 0.000 description 1
- 239000007921 spray Substances 0.000 description 1
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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
- B21B1/22—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 plates, strips, bands or sheets of indefinite length
- B21B1/30—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 plates, strips, bands or sheets of indefinite length in a non-continuous process
- B21B1/32—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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work
- B21B1/36—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 plates, strips, bands or sheets of indefinite length in a non-continuous process in reversing single stand mills, e.g. with intermediate storage reels for accumulating work by cold-rolling
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- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
-
- B—PERFORMING OPERATIONS; TRANSPORTING
- B21—MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
- B21B—ROLLING OF METAL
- B21B15/00—Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
- B21B15/0007—Cutting or shearing the product
-
- 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
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
-
- 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
- B21B37/74—Temperature control, e.g. by cooling or heating the rolls or the product
-
- 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
-
- 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
- B21B27/06—Lubricating, cooling or heating rolls
- B21B27/10—Lubricating, cooling or heating rolls externally
- B21B2027/103—Lubricating, cooling or heating rolls externally cooling externally
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- Engineering & Computer Science (AREA)
- Mechanical Engineering (AREA)
- Metal Rolling (AREA)
- Heat Treatment Of Strip Materials And Filament Materials (AREA)
Abstract
本发明提供一种冷轧板的生产方法,包括以下步骤:将钢带经过六辊可逆轧机进行左右来回8个道次的轧制,在轧制时,通过设置于钢带上表面以及下表面的喷嘴向钢带表面喷射乳化液;脱脂时采用硬态拉矫机进行拉矫,拉矫张力≥20T;将退火温度控制在550‑560℃之间,保温时间10小时,然后带罩冷却到500℃后进行风冷,风冷到250℃以下进行水冷,水冷到70℃出炉;在平整机上进行平整,平整力大于500T;通过两弯两矫拉矫机进行进行分剪拉矫,通过后几道工序改善板形以达到成品镀锡基板的要求浪高≤3mm;急峻度≤1.5%,板形指数达到10I,同时解决生产成本较高的问题。
Description
技术领域
本发明涉及一种冷轧板的生产方法。
背景技术
因成品厚度0.18mm的冷轧板的性能良好、表面光洁度良好及又具有一定的可塑性,所以现代社会对于0.18mm极薄冷轧板的应用越来越广泛,特别是在高端家电板行业和高端食品行业进行了推广使用,故对0.18mm冷轧板的各种要求也在进一步提高,特别是表面质量和板形的要求。它比普通的冷轧板在某些领域具有更好的实用性。
目前,各大企业都是采用常规的2.75mm的热轧板轧制到0.18mm的冷轧板,其生产方式主要有两种:
一种是采用十二辊可逆轧机的方式进行轧制,因十二辊轧机的工作辊辊径较小,一般在180mm以下,这样利于极薄钢板0.18mm的生产,但其轧制速度较慢,一般为300m/min左右,生产效率低下。
另一种为用六辊轧机进行轧制,先轧制到0.4mm厚度,然后经过脱脂、退火后再到轧机轧制到0.18mm,即采用二次退火的方式进行生产,这样一来多经过两道工序导致的生产成本居高不下,生产周期较长。
国内一些公司也正在致力于采用六辊轧机一次性轧制到成本的方法,但都未获得成功,因为六辊轧机的工作辊直径一般都在200mm以上,所以轧制极薄板0.18mm难度很大,即使试生产出来,其表面质量和板形指数都不能满足最终客户的要求,所以都未获得批量性生产的成功。主要原因有三个,第一个是工作辊直径过大无法轧制到要求的厚度,即使勉强生产出,但其板形又非常差;第二个是乳化液的工艺参数未调整到最佳状态;第三个是后续生产工序未起到改善来料板形的作用。
发明内容
本发明的目的在于克服上述技术的不足,从而提供一种冷轧板的生产方法,解决六辊可逆轧机轧制0.18mm极薄板较困难及生产后板形不良的问题。
本发明所采用的技术方案是这样的:冷轧板的生产方法,包括以下步骤:
S1:将材质为SPHC、MR的钢带以大于300m/min的进料速度经过六辊可逆轧机进行左右来回8个道次的轧制,将其从2.75mm的厚度轧制到0.18mm,总压下量达到93.45%,在轧制时,通过设置于钢带上表面以及下表面的喷嘴向钢带表面喷射乳化液;
S2:将轧制后的钢带进行脱脂,脱脂时采用硬态拉矫机进行拉矫,拉矫张力≥20T;
S3:将经过脱脂后的钢带进行退火,将退火温度控制在550-560℃之间,保温时间10小时,然后带罩冷却到500℃后进行风冷,风冷到250℃以下进行水冷,水冷到70℃出炉;
S4:将经过退火后的钢带在平整机上进行平整,平整力大于500T;
S5:将经过平整后的钢带进行通过两弯两矫拉矫机进行进行分剪拉矫。
进一步改进的是:乳化液温度在55-60℃之间,浓度为2.0%,PH值在6.5-7.5之间,铁粉含量控制在150-250mg/l。
通过采用前述技术方案,本发明的有益效果是:通过后几道工序改善板形以达到成品镀锡基板的要求浪高≤3mm;急峻度≤1.5%,板形指数达到10I,同时解决生产成本较高的问题。
具体实施方式
以下结合具体实施方式来进一步说明本发明。
本发明公开一种冷轧板的生产方法,包括以下步骤:
S1:将材质为SPHC、MR的钢带以大于300m/min的进料速度经过六辊可逆轧机进行左右来回8个道次的轧制,将其从2.75mm的厚度轧制到0.18mm,总压下量达到93.45%,在轧制时,通过设置于钢带上表面以及下表面的喷嘴向钢带表面喷射乳化液;
S2:将轧制后的钢带进行脱脂,脱脂时采用硬态拉矫机进行拉矫,拉矫张力≥20T;
S3:将经过脱脂后的钢带进行退火,将退火温度控制在550-560℃之间,保温时间10小时,然后带罩冷却到500℃后进行风冷,风冷到250℃以下进行水冷,水冷到70℃出炉,利于板形的修复;
S4:将经过退火后的钢带在平整机上进行平整,平整力大于500T,完全消除屈服平台;
S5:将经过平整后的钢带进行通过两弯两矫拉矫机进行进行分剪拉矫,并且根据平整来料板形情况对两弯两矫进行调节以保证出来的板形。
本实施例中优化的实施方式为,乳化液温度在55-60℃之间,浓度为2.0%,PH值在6.5-7.5之间,铁粉含量控制在150-250mg/l,通过对钢带进行双面喷乳化液以及对乳化液参数的控制,从而可以在轧制的过程中使乳化液的润滑性能达到最优化,便于极薄板的生产,双面喷射乳化液能够降低工作辊的温度,使轧辊的弹性变形减小,这样利于薄板的压下,通过以上方法的调整,在生产时速度可以提高到500m/min,并且轧制力在400-500吨左右就能轧制到0.18mm。
经过上述工序的改善,此0.18mm钢板的板形指数达到10I,满足镀锡成品对于板形的要求,同时,生产时一次性轧制而不需要二次退火,节约了两个机组和物流的成本,使吨钢成本下降170元/吨左右(脱脂成本40元/吨,退火成本110元/吨,物流成本20元/吨)。
以上显示和描述了本发明的基本原理和主要特征及其优点,本行业的技术人员应该了解,本发明不受上述实施例的限制,上述实施例和说明中描述的只是说明本发明的原理,在不脱离本发明精神和范围的前提下,本发明还会有各种变化和改进,这些变化和改进都落入要求保护的本发明范围内,本发明要求保护范围由所附的权利要求书及其等效物界定。
Claims (1)
1.冷轧板的生产方法,其特征在于:包括以下步骤:
S1:将材质为SPHC、MR的钢带以大于300m/min的进料速度经过六辊可逆轧机进行左右来回8个道次的轧制,将其从2.75mm的厚度轧制到0.18mm,总压下量达到93.45%,在轧制时,通过设置于钢带上表面以及下表面的喷嘴向钢带表面喷射乳化液,乳化液温度在55-60℃之间,浓度为2.0%,pH值在6.5-7.5之间,铁粉含量控制在150-250mg/l;
S2:将轧制后的钢带进行脱脂,脱脂时采用硬态拉矫机进行拉矫,拉矫张力≥20T;
S3:将经过脱脂后的钢带进行退火,将退火温度控制在550-560℃之间,保温时间10小时,然后带罩冷却到500℃后进行风冷,风冷到250℃以下进行水冷,水冷到70℃出炉;
S4:将经过退火后的钢带在平整机上进行平整,平整力大于500T;
S5:将经过平整后的钢带进行通过两弯两矫拉矫机进行分剪拉矫。
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CN101871105A (zh) * | 2010-06-24 | 2010-10-27 | 永鑫精密材料(无锡)有限公司 | 一种电子行业用高精度冷轧碳钢钢带的生产工艺 |
CN103700641A (zh) * | 2013-11-29 | 2014-04-02 | 武汉钢铁(集团)公司 | 一种引线框架用钢带及其生产方法 |
CN104377281A (zh) * | 2014-11-24 | 2015-02-25 | 武汉钢铁(集团)公司 | 一种led贴片支架用冷轧钢及生产方法 |
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CN101871105A (zh) * | 2010-06-24 | 2010-10-27 | 永鑫精密材料(无锡)有限公司 | 一种电子行业用高精度冷轧碳钢钢带的生产工艺 |
CN103700641A (zh) * | 2013-11-29 | 2014-04-02 | 武汉钢铁(集团)公司 | 一种引线框架用钢带及其生产方法 |
CN104377281A (zh) * | 2014-11-24 | 2015-02-25 | 武汉钢铁(集团)公司 | 一种led贴片支架用冷轧钢及生产方法 |
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