CN116748297B - 一种翘曲钢板平整处理方法 - Google Patents

一种翘曲钢板平整处理方法 Download PDF

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CN116748297B
CN116748297B CN202310747804.7A CN202310747804A CN116748297B CN 116748297 B CN116748297 B CN 116748297B CN 202310747804 A CN202310747804 A CN 202310747804A CN 116748297 B CN116748297 B CN 116748297B
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rolling
steel plate
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CN116748297A (zh
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范振英
沈益
韩林林
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Institute Of Research Of Iron & Steel shagang jiangsu Province
Jiangsu Shagang Group Co Ltd
Zhangjiagang Hongchang Steel Plate Co Ltd
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Institute Of Research Of Iron & Steel shagang jiangsu Province
Jiangsu Shagang Group Co Ltd
Zhangjiagang Hongchang Steel Plate Co Ltd
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    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B1/00Metal-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
    • B21B1/22Metal-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
    • B21B1/30Metal-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
    • B21B1/32Metal-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
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B37/00Control devices or methods specially adapted for metal-rolling mills or the work produced thereby
    • B21B37/58Roll-force control; Roll-gap control
    • BPERFORMING OPERATIONS; TRANSPORTING
    • B21MECHANICAL METAL-WORKING WITHOUT ESSENTIALLY REMOVING MATERIAL; PUNCHING METAL
    • B21BROLLING OF METAL
    • B21B15/00Arrangements for performing additional metal-working operations specially combined with or arranged in, or specially adapted for use in connection with, metal-rolling mills
    • B21B2015/0071Levelling the rolled product
    • YGENERAL TAGGING OF NEW TECHNOLOGICAL DEVELOPMENTS; GENERAL TAGGING OF CROSS-SECTIONAL TECHNOLOGIES SPANNING OVER SEVERAL SECTIONS OF THE IPC; TECHNICAL SUBJECTS COVERED BY FORMER USPC CROSS-REFERENCE ART COLLECTIONS [XRACs] AND DIGESTS
    • Y02TECHNOLOGIES OR APPLICATIONS FOR MITIGATION OR ADAPTATION AGAINST CLIMATE CHANGE
    • Y02PCLIMATE CHANGE MITIGATION TECHNOLOGIES IN THE PRODUCTION OR PROCESSING OF GOODS
    • Y02P70/00Climate change mitigation technologies in the production process for final industrial or consumer products
    • Y02P70/10Greenhouse gas [GHG] capture, material saving, heat recovery or other energy efficient measures, e.g. motor control, characterised by manufacturing processes, e.g. for rolling metal or metal working

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  • Engineering & Computer Science (AREA)
  • Mechanical Engineering (AREA)
  • Control Of Metal Rolling (AREA)
  • Metal Rolling (AREA)

Abstract

本申请公开了本申请公开了一种翘曲钢板平整处理方法,包括以下步骤:对待加工钢板进行图像采集,并根据采集图像计算待加工钢板弯曲度a;当待加工钢板弯曲度a大于轧机最大可轧弯曲度amax时,设置下一轧机道次为预处理道次,执行下一步;当待加工钢板弯曲度a小于等于轧机最大可轧弯曲度amax时,设置下一轧机道次为正常轧制道次,在轧制完成后,返回上一步;根据辊缝计算公式Hgap=H空载+b计算预处理道次的辊缝数值;根据得到的Hgap数值进行调整后开启道次,采集道次中产生的轧制力F;当F小于等于8000kN,返回第一步;当F大于8000kN且小于等于20000kN时,提升平整参数b,返回第三步。通过增设预处理道次,结合轧制力进行准确测量和分析,解决了轧制量控制问题。

Description

一种翘曲钢板平整处理方法
技术领域
本申请涉及冶金工业技术领域,尤其涉及一种翘曲钢板平整处理方法。
背景技术
在中厚板可逆式轧机生产过程中,钢板本体易翘曲,在翘曲程度较大的情况下,无法进入下一生产道次进行生产;在现有技术中,往往需要对钢板进行吊装后使用压机平整处理后重新进入轧制道次,该方法成本较高,生产效率较低;也有部分使用轧机进行微轧制量的单道次轧制后,重新进入下一轧制道次,但是该道次的轧制量控制较为困难,一旦轧制量设置不合理,会造成钢板报废,生产风险较高。
发明内容
解决的技术问题:现有技术对于钢板轧制中产生的翘曲现象无法做到高效的处理,故本申请的目的是提供一种高效处理钢板翘曲平整的方法。
技术方案:本申请公开了一种翘曲钢板平整处理方法,包括以下步骤:
步骤一、弯曲度采集和计算:对待加工中厚钢板进行图像采集,并根据采集图像计算待加工中厚钢板弯曲度a;
步骤二、轧机道次规划:当待加工中厚钢板弯曲度a大于轧机最大可轧弯曲度amax时,设置下一轧机道次为预处理道次,执行步骤三;当待加工中厚钢板弯曲度a小于等于轧机最大可轧弯曲度amax时,设置下一轧机道次为正常轧制道次,在轧制完成后,返回步骤一;
步骤三、辊缝计算:根据辊缝计算公式Hgap=H空载+b计算预处理道次的辊缝数值;
其中Hgap为计算得到的预处理道次的辊缝数值,H空载为空载道次时的辊缝数值,b为平整参数;其中,所述平整参数b的范围为20~30mm;
步骤四、轧制力监控:根据得到的Hgap数值进行调整后开始进行预处理道次,采集预处理道次中产生的轧制力F,并根据轧制力范围判定该道次的具体类型;
当F小于等于8000kN,判定该道次为平整道次,返回步骤一;
当F大于8000kN且小于等于20000kN时,判定该道次为有效载荷道次,提升平整参数b,返回步骤三。
优选地,步骤四还包括当F大于8000kN且小于等于20000kN时,判定该道次为有效载荷道次,在轧机系统内删除该次道次数据,提升平整参数b,返回执行步骤三。
优选地,步骤四还包括当F大于20000kN时,判定该道次为正常轧制道次,返回步骤一。
有益效果:通过增设预处理道次,有效处理了在待加工中厚钢板弯曲度过高情况下的平整度问题,并且结合轧制力进行准确测量和分析,从而准确高效地解决了平整道次的轧制量控制问题。
附图说明
图1为本申请翘曲钢板平整处理方法的流程图;
图2为本申请翘曲钢板平整处理方法完整道次类型判定的流程图。
实施方式
下面结合附图对本申请的技术方案作进一步说明。
如图1和2步骤所示,首先,通过轧机内设置的图像识别装置,对待加工中厚钢板进行图像采集,将采集后的图像转化为钢板弯曲度a,将该钢板弯曲度a与轧机内设置的最大可轧制弯曲度参数amax进行对比,若a小于等于amax,则直接将钢板通过预设的标准轧制参数进行轧制;若a大于amax,则无法直接将钢板运输至轧机轧制,需先进行预处理操作,具体操作如下:
设置轧机下一道次为预处理道次,通过计算机根据辊缝计算公式Hgap=H空载+b计算预处理道次的辊缝数值;其中Hgap为计算得到的预处理道次的辊缝数值,H空载为空载道次时的辊缝数值,b为平整参数;后进行预处理道次,在预处理道次进行过程中,轧制力记录仪会时刻记录轧制力大小,通过最终得到的整个预处理道次的轧制力均值,对该预处理道次进行分类:
当F小于等于8000kN,计算机将判定该道次为平整道次,故本次预处理为平整处理,经过平整处理后的待加工中厚钢板,再次回到图像识别装置进行复查,当复查合格后,可进行正常轧制道次;
当F大于8000kN且小于等于20000kN时,计算机将判定该道次为有效载荷道次,代表待加工中厚钢板进行了过度的平整处理,往往是由于平整参数b过低导致,故提升平整参数b后,再次进行预处理道次,之后再次回到图像识别装置进行复查,当复查合格后,可进行正常轧制道次;并且,由于该次有效载荷道次由于轧制力较大会被计算机记录,影响后续的正常轧制道次参数计算,故删除本次有效载荷道次数据,以后续正常进行的平整道次数据为准,以提高正常轧制道次的精确度;
当F大于20000kN时,计算机将判定该道次为正常轧制道次,故再次回到图像识别装置进行复查,当复查合格后,可进行正常轧制道次。
其中,根据常规中厚板可逆式轧机轧制的钢板尺寸,平整参数b范围为20~30mm。

Claims (3)

1.一种翘曲钢板平整处理方法,其特征在于,包括以下步骤:
步骤一、弯曲度采集和计算:对待加工中厚钢板进行图像采集,并根据采集图像计算待加工中厚钢板弯曲度a;
步骤二、轧机道次规划:当待加工中厚钢板弯曲度a大于轧机最大可轧弯曲度amax时,设置下一轧机道次为预处理道次,执行步骤三;当待加工中厚钢板弯曲度a小于等于轧机最大可轧弯曲度amax时,设置下一轧机道次为正常轧制道次,在轧制完成后,返回步骤一;
步骤三、辊缝计算:根据辊缝计算公式Hgap=H空载+b计算预处理道次的辊缝数值;
其中Hgap为计算得到的预处理道次的辊缝数值,H空载为空载道次时的辊缝数值,b为平整参数;其中,平整参数b的范围为20~30mm;
步骤四、轧制力监控:根据得到的Hgap数值进行调整后开始进行预处理道次,采集预处理道次中产生的轧制力F,并根据轧制力范围判定该道次的具体类型;
当F小于等于8000kN,判定该道次为平整道次,返回步骤一;
当F大于8000kN且小于等于20000kN时,判定该道次为有效载荷道次,提升平整参数b,返回步骤三。
2.根据权利要求1所述的翘曲钢板平整处理方法,其特征在于,步骤四还包括当F大于8000kN且小于等于20000kN时,判定该道次为有效载荷道次,在轧机系统内删除该道次数据,提升平整参数b,返回执行步骤三。
3.根据权利要求1所述的翘曲钢板平整处理方法,其特征在于,步骤四还包括当F大于20000kN时,判定该道次为正常轧制道次,返回步骤一。
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