CN114959472A - 一种低强度高延伸精密焊管用冷轧板及其生产方法 - Google Patents

一种低强度高延伸精密焊管用冷轧板及其生产方法 Download PDF

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CN114959472A
CN114959472A CN202210574681.7A CN202210574681A CN114959472A CN 114959472 A CN114959472 A CN 114959472A CN 202210574681 A CN202210574681 A CN 202210574681A CN 114959472 A CN114959472 A CN 114959472A
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张冷
王晓宇
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Angang Steel Cold Rolled Steel Sheet Putian Co ltd
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    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/004Very low carbon steels, i.e. having a carbon content of less than 0,01%
    • 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
    • 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/005Heat treatment of ferrous alloys containing Mn
    • 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
    • C21D6/00Heat treatment of ferrous alloys
    • C21D6/008Heat treatment of ferrous alloys containing Si
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    • 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0205Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips of ferrous alloys
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    • 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0226Hot rolling
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    • 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0236Cold rolling
    • 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0221Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the working steps
    • C21D8/0242Flattening; Dressing; Flexing
    • 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
    • C21D8/00Modifying the physical properties by deformation combined with, or followed by, heat treatment
    • C21D8/02Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0273Final recrystallisation annealing
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    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/02Ferrous alloys, e.g. steel alloys containing silicon
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/04Ferrous alloys, e.g. steel alloys containing manganese
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/06Ferrous alloys, e.g. steel alloys containing aluminium
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/14Ferrous alloys, e.g. steel alloys containing titanium or zirconium

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  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Sheet Steel (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

一种低强度高延伸精密焊管用冷轧板,钢中化学成分按重量百分比计含有:C≤0.003%、Si≤0.02%、Mn 0.08%~0.15%、P≤0.012%、S≤0.012%、Als 0.01%~0.05%、Ti0.05%~0.07%,其余为Fe及不可避免的杂质。所述焊管用冷轧板屈服强度为120~135MPa、抗拉强度为280~295MPa、延伸率为51%~55%。本发明通过控制钢的化学成分、热轧、冷轧、连续退火及平整工艺参数,使精密焊管用冷轧板的屈服强度达到120~135MPa、抗拉强度达到280~295MPa、延伸率达到51~55%,完全能够满足用户需求,提高了产品质量和成品率,增加了企业效益。

Description

一种低强度高延伸精密焊管用冷轧板及其生产方法
技术领域
本发明属于冷轧技术领域,尤其涉及一种低强度高延伸精密焊管钢及其生产方法。
背景技术
随着国内外钢材市场的竞争日趋激烈,市场利益空间已越来越来小,成本压力越来越大。精密焊管用冷轧板主要用于家电和汽车等行业,相比其他冷轧品种有较高附加值,是某钢铁公司最主要的盈利品种。但用户在使用过程中普遍反映精密焊管钢经拉拔、退火后强度偏高、延伸率偏低(屈服强度达170MPa以上、抗拉强度达330MPa以上、延伸率仅为42%以下,而用户要求屈服强度为140MPa以下、抗拉强度为300MPa以下、延伸率为50%以上),严重影响中间用户的生产效率和最终用户的装配使用,因此迫切要求加以改进。
发明内容
本发明提供了一种低强度高延伸精密焊管用冷轧板及其生产方法,降低精密焊管用冷轧板的强度、提高精密焊管钢的延伸率,使之符合产品要求。
为了达到上述目的,本发明采用以下技术方案实现:
一种低强度高延伸精密焊管用冷轧板,钢中化学成分按重量百分比计含有:C≤0.003%、Si≤0.02%、Mn 0.08%~0.15%、P≤0.012%、S≤0.012%、Als 0.01%~0.05%、Ti0.05%~0.07%,其余为Fe及不可避免的杂质。
所述焊管用冷轧板屈服强度为120~135MPa、抗拉强度为280~295MPa、延伸率为51%~55%。
一种低强度高延伸精密焊管用冷轧板的生产方法,包括钢水冶炼、连铸、热轧、冷轧、连续退火、平整工艺过程;
1)热轧工艺参数:
加热温度:1210~1270℃;终轧温度:900~960℃;卷曲温度:700~760℃;
3)冷轧压下率:
成品厚度0.4~0.49mm时,压下率82.18%~85.45%;
成品厚度0.5~0.54mm时,压下率82%~83.33%;
成品厚度0.55~0.64mm时,压下率80.31%~83.08%;
4)连续退火工艺参数:
加热段温度为820~825℃,均热段温度为835~840℃,缓冷段出口温度为640~650℃,快冷段出口温度为440~450℃;
5)平整工艺参数:
平整延伸率:0.5~0.6%。
与现有技术相比,本发明的有益效果是:
本发明通过控制钢的化学成分、热轧、冷轧、连续退火及平整工艺参数,使精密焊管用冷轧板的屈服强度达到120~135MPa、抗拉强度达到280~295MPa、延伸率达到51~55%,完全能够满足用户需求,提高了产品质量和成品率,增加了企业效益。
具体实施方式
下面结合实施例对本发明的具体实施方式作进一步说明:
一种低强度高延伸精密焊管用冷轧板,钢中化学成分按重量百分比计含有:C≤0.003%、Si≤0.02%、Mn 0.08%~0.15%、P≤0.012%、S≤0.012%、Als 0.01%~0.05%、Ti0.05%~0.07%,其余为Fe及不可避免的杂质。
所述焊管用冷轧板屈服强度为120~135MPa、抗拉强度为280~295MPa、延伸率为51%~55%。
一种低强度高延伸精密焊管用冷轧板的生产方法,包括钢水冶炼、连铸、热轧、冷轧、连续退火、平整工艺过程;
1)热轧工艺参数:
加热温度:1210~1270℃;终轧温度:900~960℃;卷曲温度:700~760℃;
3)冷轧压下率:
成品厚度0.4~0.49mm时,压下率82.18%~85.45%;
成品厚度0.5~0.54mm时,压下率82%~83.33%;
成品厚度0.55~0.64mm时,压下率80.31%~83.08%;
4)连续退火工艺参数:
加热段温度为820~825℃,均热段温度为835~840℃,缓冷段出口温度为640~650℃,快冷段出口温度为440~450℃;
5)平整工艺参数:
平整延伸率:0.5~0.6%。
实施例1-7见表1-表3。
表1本发明实施例钢的成分(wt%)
示例 C Si Mn P S Als Ti
1 0.002 0.028 0.09 0.006 0.002 0.015 0.051
2 0.001 0.025 0.10 0.012 0.006 0.032 0.060
3 0.0015 0.01 0.13 0.011 0.005 0.035 0.053
4 0.0025 0.005 0.12 0.010 0.004 0.041 0.068
5 0.0028 0.015 0.14 0.008 0.003 0.030 0.065
6 0.0008 0.018 0.15 0.009 0.005 0.033 0.062
7 0.0016 0.023 0.08 0.004 0.007 0.045 0.058
注:余量为铁及不可避免杂质。
表2本发明产品的制造工艺参数
Figure BDA0003661623800000031
表3本发明产品的力学性能
成分编号 屈服强度/MPa 抗拉强度/MPa 延伸率/%
1 120 289 52
2 130 286 53
3 125 294 54
4 133 285 55
5 134 290 51
6 128 281 54
7 124 288 53

Claims (3)

1.一种低强度高延伸精密焊管用冷轧板,其特征在于,钢中化学成分按重量百分比计含有:C≤0.003%、Si≤0.02%、Mn 0.08%~0.15%、P≤0.012%、S≤0.012%、Als 0.01%~0.05%、Ti 0.05%~0.07%,其余为Fe及不可避免的杂质。
2.根据权利要求1所述的低强度高延伸精密焊管用冷轧板,其特征在于,所述焊管用冷轧板屈服强度为120~135MPa、抗拉强度为280~295MPa、延伸率为51%~55%。
3.一种如权利要求1或2所述的低强度高延伸精密焊管用冷轧板的生产方法,包括钢水冶炼、连铸、热轧、冷轧、连续退火、平整工艺过程;其特征在于:
1)热轧工艺参数:
加热温度:1210~1270℃;终轧温度:900~960℃;卷曲温度:700~760℃;
3)冷轧压下率:
成品厚度0.4~0.49mm时,压下率82.18%~85.45%;
成品厚度0.5~0.54mm时,压下率82%~83.33%;
成品厚度0.55~0.64mm时,压下率80.31%~83.08%;
4)连续退火工艺参数:
加热段温度为820~825℃,均热段温度为835~840℃,缓冷段出口温度为640~650℃,快冷段出口温度为440~450℃;
5)平整工艺参数:
平整延伸率:0.5~0.6%。
CN202210574681.7A 2022-05-25 2022-05-25 一种低强度高延伸精密焊管用冷轧板及其生产方法 Pending CN114959472A (zh)

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Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852441A (ja) * 1981-09-22 1983-03-28 Sumitomo Metal Ind Ltd プレス成形性の良好な高強度冷延鋼板の製造法
CN104694817A (zh) * 2015-03-26 2015-06-10 攀钢集团西昌钢钒有限公司 超低碳冷轧钢板生产方法
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CN105239001A (zh) * 2015-11-11 2016-01-13 攀钢集团攀枝花钢铁研究院有限公司 油汀用冷轧钢板及其制备方法
CN108396242A (zh) * 2018-01-10 2018-08-14 唐山钢铁集团有限责任公司 一种低成本焊管用超高强度冷轧连退带钢及其生产方法
US20180265945A1 (en) * 2015-09-28 2018-09-20 Baoshan Iron & Steel Co., Ltd. Continuous annealing method for low coercive force cold-rolled electromagnetic pure iron plate and strip
CN113088794A (zh) * 2021-04-16 2021-07-09 攀钢集团攀枝花钢铁研究院有限公司 低△r值IF钢热镀锌钢板及其制备方法
CN113122689A (zh) * 2021-04-16 2021-07-16 攀钢集团攀枝花钢铁研究院有限公司 低△r值IF钢冷轧钢板及其制备方法
CN113122690A (zh) * 2021-04-16 2021-07-16 攀钢集团攀枝花钢铁研究院有限公司 低△r值微碳钢冷轧钢板及其制备方法
CN114525449A (zh) * 2022-01-28 2022-05-24 包头钢铁(集团)有限责任公司 一种冷轧深冲用dc04汽车钢板及其制造方法

Patent Citations (10)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
JPS5852441A (ja) * 1981-09-22 1983-03-28 Sumitomo Metal Ind Ltd プレス成形性の良好な高強度冷延鋼板の製造法
CN104694817A (zh) * 2015-03-26 2015-06-10 攀钢集团西昌钢钒有限公司 超低碳冷轧钢板生产方法
CN104745935A (zh) * 2015-03-26 2015-07-01 攀钢集团西昌钢钒有限公司 冲压性能优良的冷轧钢板生产方法
US20180265945A1 (en) * 2015-09-28 2018-09-20 Baoshan Iron & Steel Co., Ltd. Continuous annealing method for low coercive force cold-rolled electromagnetic pure iron plate and strip
CN105239001A (zh) * 2015-11-11 2016-01-13 攀钢集团攀枝花钢铁研究院有限公司 油汀用冷轧钢板及其制备方法
CN108396242A (zh) * 2018-01-10 2018-08-14 唐山钢铁集团有限责任公司 一种低成本焊管用超高强度冷轧连退带钢及其生产方法
CN113088794A (zh) * 2021-04-16 2021-07-09 攀钢集团攀枝花钢铁研究院有限公司 低△r值IF钢热镀锌钢板及其制备方法
CN113122689A (zh) * 2021-04-16 2021-07-16 攀钢集团攀枝花钢铁研究院有限公司 低△r值IF钢冷轧钢板及其制备方法
CN113122690A (zh) * 2021-04-16 2021-07-16 攀钢集团攀枝花钢铁研究院有限公司 低△r值微碳钢冷轧钢板及其制备方法
CN114525449A (zh) * 2022-01-28 2022-05-24 包头钢铁(集团)有限责任公司 一种冷轧深冲用dc04汽车钢板及其制造方法

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