CN104561875A - 一种高强度镀锌板的热镀锌生产工艺 - Google Patents

一种高强度镀锌板的热镀锌生产工艺 Download PDF

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CN104561875A
CN104561875A CN201410803686.8A CN201410803686A CN104561875A CN 104561875 A CN104561875 A CN 104561875A CN 201410803686 A CN201410803686 A CN 201410803686A CN 104561875 A CN104561875 A CN 104561875A
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raw material
plate shape
hot dip
galvanized sheet
dip galvanizing
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胡洪林
张永钢
马孝娟
卢鹏程
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Xinjiang Bayi Iron and Steel Co Ltd
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Baosteel Group Xinjiang Bayi Iron and Steel Co Ltd
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    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/04Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the coating material
    • C23C2/06Zinc or cadmium or alloys based thereon
    • CCHEMISTRY; METALLURGY
    • C21METALLURGY OF IRON
    • C21DMODIFYING THE PHYSICAL STRUCTURE OF FERROUS METALS; GENERAL DEVICES FOR HEAT TREATMENT OF FERROUS OR NON-FERROUS METALS OR ALLOYS; MAKING METAL MALLEABLE, e.g. BY DECARBURISATION OR TEMPERING
    • C21D1/00General methods or devices for heat treatment, e.g. annealing, hardening, quenching or tempering
    • C21D1/26Methods of annealing
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/02Pretreatment of the material to be coated, e.g. for coating on selected surface areas
    • CCHEMISTRY; METALLURGY
    • C23COATING 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
    • C23CCOATING METALLIC MATERIAL; COATING MATERIAL WITH METALLIC MATERIAL; SURFACE TREATMENT OF METALLIC MATERIAL BY DIFFUSION INTO THE SURFACE, BY CHEMICAL CONVERSION OR SUBSTITUTION; COATING BY VACUUM EVAPORATION, BY SPUTTERING, BY ION IMPLANTATION OR BY CHEMICAL VAPOUR DEPOSITION, IN GENERAL
    • C23C2/00Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor
    • C23C2/34Hot-dipping or immersion processes for applying the coating material in the molten state without affecting the shape; Apparatus therefor characterised by the shape of the material to be treated
    • C23C2/36Elongated material
    • C23C2/40Plates; Strips

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  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Chemical Kinetics & Catalysis (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Coating With Molten Metal (AREA)
  • Heat Treatment Of Strip Materials And Filament Materials (AREA)

Abstract

本发明公开了一种高强度镀锌板的热镀锌生产工艺,牌号定为S600GD+Z,采用拉矫机进行生产,工艺步骤如下:1、采用冷轧低碳钢的基板,2、选用原料板形要求急峻度<1.2%,无荷叶边等缺陷;由于全硬钢退火温度低,缩颈量为0-1mm,要求原料板形宽度按照镀锌原料内控标准的下限执行,3、为全硬钢原料板形进行连续退火炉热工制度配置参数:4、镀锌板各段张力配置参数,5、炉压控制,将退火炉炉压从70-80Pa提高到100-150Pa,6、过渡过程控制,机组速度控制在45MPM,在运行的大约60分钟内,将退火板温由570℃逐渐降低到480℃,保持稳定的机组速度,直到计划的钢卷生产接近完成,7、调整镀锌液化学成分,将锌液中Al含量提高到0.15-0.19%;8、拉矫机控制,延伸率设定为0.2%-0.25%。

Description

一种高强度镀锌板的热镀锌生产工艺
技术领域
本发明涉及一种高强度镀锌板的热镀锌生产工艺。
背景技术
高强度镀锌板的镀锌工艺其关键是控制好回复再结晶程度,以获得预期的材料强度。钢板冷轧后晶粒变形扭曲,位错堆积产生应变硬化,使内应力和强度增高。生产实践表明强度高达800MPa 以上,通过镀锌退火炉再结晶退火,使其组织发生回复、再结晶形核、晶粒长大,当织构完全形成后,其强度可降到400MPa以下。因此,通过控制退火温度和退火时间,可得到最终的产品性能。
发明内容
本发明的目的在于提供一种高强度镀锌板的热镀锌生产工艺,高强度热镀锌板利用低碳冷板轧后硬化作用,控制连续退火炉板温在合适的低温,通过不完全退火,使得镀锌板材料内部发生适度的回复,让钢板保持冷变形纤维,从而在提高镀锌板强度的同时保持一定的延伸率,生产的高强镀锌板性能较好。
本发明的目的是这样实现的,一种高强度镀锌板的热镀锌生产工艺,牌号定为S600GD+Z,采用拉矫机进行生产,工艺步骤如下:
1、采用冷轧低碳钢的基板,基板化学成分见下表:
2、选用原料板形要求急峻度<1.2%,无荷叶边等缺陷;由于全硬钢退火温度低,缩颈量为0-1mm,要求原料板形宽度按照镀锌原料内控标准的下限执行,即原料板形宽度误差为+2—+5mm;
3、全硬钢原料板形经过连续退火炉热工制度配置参数:
4、镀锌板各段张力配置参数,单位为KN,
 
 5、炉压控制,将退火炉炉压从70-80Pa 提高到100-150Pa,保证氢气浓度保持在20%;
6、过渡过程控制,用于降温的过渡卷,机组速度控制在45MPM,在运行的大约60分钟内,将退火板温由570℃逐渐降低到480℃,为了避免快冷段1#风机对均热段板温仪的影响,从生产过渡卷之前的一个钢卷开始,直到全硬钢试生产结束,快冷段1#风机停用,只根据需要开启2-5#部分或者全部风机;第一个过渡卷生产完,从第二个过渡卷开始将机组速度提高到45 MPM,将退火板温控制在480±10℃,保持稳定的机组速度,直到计划的钢卷生产接近完成,从计划的最后1卷开始降低机组速度,恢复正常生产;
7、调整镀锌液化学成分,通过添加高铝锭的方式,将锌液中Al含量提高到0.15-0.19%;
8、拉矫机控制,由于全硬钢退火温度低,抗拉强度高,拉矫辊受力增加,延伸率设定为0.2%-0.25%。
 采用本发明方法控制稳定的机组速度,保持连续退火炉较低板温的方式已成功的批量生产高强度镀锌板(S600GD+Z),对生产出的产品进行检测,其性能指标完全满足性能指标要求,经用户使用验证也完全符合高强度镀锌板的质量要求。产品的检测性能指标见下表
高强度镀锌板(S600GD+Z)性能指标检测结果
本发明方法适用于轧钢具有:加热-热连轧-层流冷却-卷取-冷轧酸洗-冷轧轧机-镀锌-包装的工装设备的钢铁生产企业。
具体实施方式
一种高强度镀锌板的热镀锌生产工艺,牌号定为S600GD+Z,采用拉矫机进行生产,工艺步骤如下:
1、采用冷轧低碳钢的基板,基板化学成分见下表:
2、选用原料板形要求急峻度<1.2%,无荷叶边等缺陷;由于全硬钢退火温度低,缩颈量为0-1mm,要求原料板形宽度按照镀锌原料内控标准的下限执行,即原料板形宽度误差为+2—+5mm;
3、全硬钢原料板形经过连续退火炉热工制度配置参数:
4、镀锌板各段张力配置参数,单位为KN,
5、炉压控制,将退火炉炉压从70-80Pa 提高到100-150Pa,保证氢气浓度保持在20%;
6、过渡过程控制,用于降温的过渡卷,机组速度控制在45MPM,在运行的大约60分钟内,将退火板温由570℃逐渐降低到480℃,为了避免快冷段1#风机对均热段板温仪的影响,从生产过渡卷之前的一个钢卷开始,直到全硬钢试生产结束,快冷段1#风机停用,只根据需要开启2-5#部分或者全部风机。第一个过渡卷生产完,从第二个过渡卷开始将机组速度提高到45 MPM,将退火板温控制在480±10℃,保持稳定的机组速度,直到计划的钢卷生产接近完成,从计划的最后1卷开始降低机组速度,恢复正常生产。
7、调整镀锌液化学成分,通过添加高铝锭的方式,将锌液中Al含量提高到0.15-0.19%;
8、拉矫机控制,由于全硬钢退火温度低,抗拉强度高,拉矫辊受力增加,延伸率设定为0.2%-0.25%。

Claims (1)

1.一种高强度镀锌板的热镀锌生产工艺,牌号定为S600GD+Z,采用拉矫机进行生产,工艺步骤如下:
1)、采用冷轧低碳钢的基板,基板化学成分见下表:
2)、选用原料板形要求急峻度<1.2%,无荷叶边等缺陷;由于全硬钢退火温度低,缩颈量为0-1mm,要求原料板形宽度按照镀锌原料内控标准的下限执行,即原料板形宽度误差为+2—+5mm;
3)、全硬钢原料板形经过连续退火炉热工制度配置参数:
4)、镀锌板各段张力配置参数,单位为KN,
 
 5)、炉压控制,将退火炉炉压从70-80Pa 提高到100-150Pa,保证氢气浓度保持在20%;
6)、过渡过程控制,用于降温的过渡卷,机组速度控制在45MPM,在运行的大约60分钟内,将退火板温由570℃逐渐降低到480℃,为了避免快冷段1#风机对均热段板温仪的影响,从生产过渡卷之前的一个钢卷开始,直到全硬钢试生产结束,快冷段1#风机停用,只根据需要开启2-5#部分或者全部风机,第一个过渡卷生产完,从第二个过渡卷开始将机组速度提高到45 MPM,将退火板温控制在480±10℃,保持稳定的机组速度,直到计划的钢卷生产接近完成,从计划的最后一卷开始降低机组速度,恢复正常生产;
7)、调整镀锌液化学成分,通过添加高铝锭的方式,将锌液中Al含量提高到0.15-0.19%;
8)、拉矫机控制,由于全硬钢退火温度低,抗拉强度高,拉矫辊受力增加,延伸率设定为0.2%-0.25%。
CN201410803686.8A 2014-12-23 2014-12-23 一种高强度镀锌板的热镀锌生产工艺 Pending CN104561875A (zh)

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Cited By (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107179749A (zh) * 2016-03-11 2017-09-19 宝山钢铁股份有限公司 热镀锌产品全流程质量控制方法
CN107201477A (zh) * 2016-10-11 2017-09-26 宝钢集团新疆八钢铁有限公司 一种深冲镀锌门板用钢的冷轧生产工艺
CN107254631A (zh) * 2017-06-13 2017-10-17 新疆八钢铁股份有限公司 一种打包用镀锌钢卷生产方法
CN107587089A (zh) * 2017-07-19 2018-01-16 宝钢集团新疆八钢铁有限公司 一种消除镀锌门板钢表面拉矫纹的工艺
CN114226549A (zh) * 2021-12-21 2022-03-25 成都华川电装有限责任公司 起动机定子外壳的制备方法

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CN101736195A (zh) * 2008-11-24 2010-06-16 攀钢集团研究院有限公司 热镀铝锌合金钢板及其生产方法
CN102787271A (zh) * 2012-07-17 2012-11-21 马钢(集团)控股有限公司 一种460MPa级高表面质量结构用热镀锌钢板的生产方法及其产品
CN103215534A (zh) * 2013-03-21 2013-07-24 宝钢集团新疆八一钢铁有限公司 一种高强度热镀锌板的生产工艺

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CN101736195A (zh) * 2008-11-24 2010-06-16 攀钢集团研究院有限公司 热镀铝锌合金钢板及其生产方法
CN102787271A (zh) * 2012-07-17 2012-11-21 马钢(集团)控股有限公司 一种460MPa级高表面质量结构用热镀锌钢板的生产方法及其产品
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Cited By (8)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN107179749A (zh) * 2016-03-11 2017-09-19 宝山钢铁股份有限公司 热镀锌产品全流程质量控制方法
CN107179749B (zh) * 2016-03-11 2019-10-15 宝钢湛江钢铁有限公司 热镀锌产品全流程质量控制方法
CN107201477A (zh) * 2016-10-11 2017-09-26 宝钢集团新疆八钢铁有限公司 一种深冲镀锌门板用钢的冷轧生产工艺
CN107254631A (zh) * 2017-06-13 2017-10-17 新疆八钢铁股份有限公司 一种打包用镀锌钢卷生产方法
CN107587089A (zh) * 2017-07-19 2018-01-16 宝钢集团新疆八钢铁有限公司 一种消除镀锌门板钢表面拉矫纹的工艺
CN107587089B (zh) * 2017-07-19 2021-05-28 新疆八一钢铁股份有限公司 一种消除镀锌门板钢表面拉矫纹的工艺
CN114226549A (zh) * 2021-12-21 2022-03-25 成都华川电装有限责任公司 起动机定子外壳的制备方法
CN114226549B (zh) * 2021-12-21 2024-05-10 成都华川电装有限责任公司 起动机定子外壳的制备方法

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