CN113430460A - 一种屈服强度690MPa级低成本高强非调质钢板及其制造方法 - Google Patents
一种屈服强度690MPa级低成本高强非调质钢板及其制造方法 Download PDFInfo
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Abstract
本发明公开了一种屈服强度690MPa级低成本高强非调质钢板及制造方法,其中,钢板的化学成分重量百分比为:C:0.06‑0.09%;Si:0.1‑0.5%;Mn:1.3‑2.0%;P≤0.015%;S≤0.002%;Nb:0.03‑0.06%;Ti:0.01‑0.02%;Al:0.025‑0.045%;B:0.001‑0.0016%;其余为Fe和不可避免杂质。上述钢板的制造方法为,经冶炼浇铸、加热、两阶段轧制、冷却、缓冷的工序。本发明具体采用纯DQ冷却工艺+冷后堆缓冷自回火工艺,充分发挥合金元素作用,采用控制轧制及强化冷却的方式达到钢板所需性能。
Description
技术领域
本发明属于690Mpa级高强钢板制造技术领域,具体涉及一种屈服强度大于690MPa级低成本高强钢板及其制造方法。
背景技术
目前针对690MPa级高强结构钢的生产主要用于煤矿机械、工程机械等行业,生产工艺一般采用调质态或者TMCP+T态生产,但该工艺生产制造成本相对较高。
例如公开号CN109055657A的专利-“690MPa级低成本高强韧贝氏体钢板及其生产工艺”钢的化学成分重量百分比为C本发明公开了一种690MPa级低成本高强韧贝氏体钢板及其生产工艺,钢板化学成分组成及其质量百分含量为C:0.03~0.09%、Si:0.10~0.30%、Mn:1.50~1.80%、Nb:0.030~0.070%、Ti≤0.02%、Mo:0.10~0.40%、Ni:0.20~0.30%、Alt≤0.045%、Bt≤0.002%,余量为Fe和不可避免的杂质;生产工艺包括冶炼、连铸、加热、轧制和热处理工序。
又例如公开号CN102851604A的专利-“一种屈服强度690MPa级高强度钢板的生产方法”其成分重量百分比为:所述钢板的化学成分按重量百分比为C:0.04~0.09%、Si:0.25~0.50%、Mn:1.4~1.7%、P:≤0.020%、S:≤0.010%、Cr≤0.45%、Mo≤0.20%、Nb:0.04~0.05%、V:0.05~0.07%、Ti:0.005~0.020%、B:0.0005~0.0025%,余量为Fe和不可避免的杂质。采用低碳微合金化设计,控制轧制后通过在线淬火(DQ)+回火工艺(T),获得了回火马氏体+回火贝氏体的整合组织,从而获得了强度、塑性和韧性的良好匹配,
上述两个公开的专利,从生产工艺及合金成分设计方面来看,合金元素种类多、含量高,生产工序复杂,进而生产制造成本较高。
发明内容
本发明的目的在于提供一种屈服强度690MPa级低成本高强钢板及其制造方法,打破原始调质钢及DQ+T钢的生产观念,采用控制轧制及强化冷却工艺,充分发挥合金元素、及冷后堆缓冷的自回火作用达到钢板所需性能。
为了实现上述目的,本发明采用的技术方案是:一种屈服强度690MPa级低成本高强非调质钢板,其特征在于:其化学成分重量百分比为:C:0.06-0.09%;Si:0.1-0.5%;Mn:1.3-2.0%;P≤0.015%;S≤0.002%;Nb:0.03-0.06%;Ti:0.01-0.02%;Al:0.025-0.045%;B:0.001-0.0016%;其余为Fe和不可避免杂质。
进一步地,所述钢板的屈服强度≥690MPa,抗拉强度770MPa,断后伸长率≥14%,-20℃纵横向冲击功≥47J。
本发明还公开一种上述屈服强度690MPa级低成本高强非调质钢板的制造方法,其特征在于:包括如下步骤:
(1)冶炼、浇铸:按照所述屈服强度690MPa级低成本高强非调质钢板的化学成分及配比进行冶炼,转炉出钢后然后通过LF+RH真空处理系统有效减少钢种的S元素及气体元素,再进行连铸机浇铸;
(2)加热:加热温度:1110-1170℃,保温时间220-280min;
(3)轧制阶段:轧制阶段分两阶段轧制,第一阶段在奥氏体完全再结晶区大压下率进行连续轧制,道次压下率≥8%,第一阶段终轧温度≥975℃;第二阶段采用控制轧制,即在奥氏体未再结晶区轧制,控轧开轧温度控制在870℃~920℃,终轧温度820℃~880℃,每道次压下率≥8%;
(4)冷却阶段:钢板轧制结束后,立即送入加速冷却设备,钢板开冷温度在770-830之间,冷区速率23-30℃/S,终冷温度420-500℃
(5)缓冷工序:钢板冷却完成后,立即完成热矫直下线堆缓冷,堆缓冷温度≥300℃,堆缓冷时间≥24h。
本发明的有益效果是:本发明采用纯DQ冷却工艺+冷后堆缓冷自回火工艺,充分发挥合金元素作用,采用控制轧制及强化冷却的方式达到钢板所需性能。与现有技术相比,在保证了力学性能的前期下,减少贵金属元素的加入种类及含量,精简生产工序,生产制造成本相应的降低。
(1)本发明针对690MPa级高强结构用非调质钢采用Si-Mn-B-Nb-Al合金成分设计,钢板合金成本大大降低。
(2)本发明打破传统工艺设计思路,采用轧后加速冷却并快速进行堆缓冷工序。利用堆缓冷的自回火功能代替原始热处理炉回火工艺,进一步降低生产制造成本,并有效提高生产效率。
附图说明
图1为本发明实施例1的金相照片。
具体实施方式
本发明一种屈服强度690MPa级低成本高强非调质钢板,其化学成分重量百分比为:C:0.06-0.09%;Si:0.1-0.5%;Mn:1.3-2.0%;P≤0.015%;S≤0.002%;Nb:0.03-0.06%;Ti:0.01-0.02%;Al:0.025-0.045%;B:0.001-0.0016%;其余为Fe和不可避免杂质。
所述钢板的屈服强度≥690MPa,抗拉强度770MPa,断后伸长率≥14%,-20℃纵横向冲击功≥47J。
上述屈服强度690MPa级低成本高强非调质钢板的制造方法,包括如下步骤:
(1)冶炼、浇铸:按照所述屈服强度690MPa级低成本高强非调质钢板的化学成分及配比进行冶炼,转炉出钢后然后通过LF+RH真空处理系统有效减少钢种的S元素及气体元素,再进行连铸机浇铸。
(2)加热:加热温度:1110-1170℃,保温时间220-280min。
(3)轧制阶段:轧制阶段分两阶段轧制,第一阶段在奥氏体完全再结晶区大压下率进行连续轧制,道次压下率≥8%,第一阶段终轧温度≥975℃;第二阶段采用控制轧制,即在奥氏体未再结晶区轧制,控轧开轧温度控制在870℃~920℃,终轧温度820℃~880℃,每道次压下率≥8%。
(4)冷却阶段:钢板轧制结束后,立即送入加速冷却设备,钢板开冷温度在770-830之间,冷区速率23-30℃/S,终冷温度420-500℃。
(5)缓冷工序:钢板冷却完成后,立即完成热矫直下线堆缓冷,堆缓冷温度≥300℃,堆缓冷时间≥24h。
具体的,钢板化学成分的配比及制造方法中涉及的参数,可以在对应的范围内选择设置,下面通过举例说明,如表1、表2所示。
以上实施例对应的力学性能测验结果如表3所示。
由表1、表2和表3中所列的实施例可以看出,采用本发明制备的钢板的抗拉强度、屈服强度、断后伸长率均满足用户要求,-20夏比冲击功≥200J、其与现有技术相比,在保证了力学性能的前期下,减少贵金属元素的加入种类及含量,精简生产工序,生产制造成本相应的降低。
以上仅为本发明的优选实施例而已,并不用于限制本发明,对于本领域的技术人员来说,本发明可以有各种更改和变化。凡在本发明的精神和原则之内,所作的任何修改、等同替换、改进等,均应包含在本发明的保护范围之内。
Claims (3)
1.一种屈服强度690MPa级低成本高强非调质钢板,其特征在于:其化学成分重量百分比为:C:0.06-0.09%;Si:0.1-0.5%;Mn:1.3-2.0%;P≤0.015%;S≤0.002%;Nb:0.03-0.06%;Ti:0.01-0.02%;Al:0.025-0.045%;B:0.001-0.0016%;其余为Fe和不可避免杂质。
2.根据权利要求1所述的屈服强度690MPa级低成本高强非调质钢板,其特征在于:其屈服强度≥690MPa,抗拉强度770MPa,断后伸长率≥14%,-20℃纵横向冲击功≥47J。
3.一种如权利要求1或2所述屈服强度690MPa级低成本高强非调质钢板的制造方法,其特征在于:包括如下步骤:
(1)冶炼、浇铸:按照所述屈服强度690MPa级低成本高强非调质钢板的化学成分及配比进行冶炼,转炉出钢后然后通过LF+RH真空处理系统有效减少钢种的S元素及气体元素,再进行连铸机浇铸;
(2)加热:加热温度:1110-1170℃,保温时间220-280min;
(3)轧制阶段:轧制阶段分两阶段轧制,第一阶段在奥氏体完全再结晶区大压下率进行连续轧制,道次压下率≥8%,第一阶段终轧温度≥975℃;第二阶段采用控制轧制,即在奥氏体未再结晶区轧制,控轧开轧温度控制在870℃~920℃,终轧温度820℃~880℃,每道次压下率≥8%;
(4)冷却阶段:钢板轧制结束后,立即送入加速冷却设备,钢板开冷温度在770-830之间,冷区速率23-30℃/S,终冷温度420-500℃
(5)缓冷工序:钢板冷却完成后,立即完成热矫直下线堆缓冷,堆缓冷温度≥300℃,堆缓冷时间≥24h。
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Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101619414A (zh) * | 2009-07-29 | 2010-01-06 | 马鞍山钢铁股份有限公司 | 10.9级含铌非调质冷镦钢及其热轧盘条的轧制方法 |
CN102260823A (zh) * | 2010-05-27 | 2011-11-30 | 宝山钢铁股份有限公司 | 一种经济型屈服强度690MPa级高强钢板及其制造方法 |
CN103147004A (zh) * | 2013-03-21 | 2013-06-12 | 宝山钢铁股份有限公司 | 一种热轧低合金高强度钢板及其制造方法 |
CN103898406A (zh) * | 2014-03-25 | 2014-07-02 | 宝山钢铁股份有限公司 | 一种屈服强度890MPa级低焊接裂纹敏感性钢板及其制造方法 |
CN103952626A (zh) * | 2014-05-12 | 2014-07-30 | 安徽工业大学 | 一种贝氏体非调质紧固件用钢性能的调控方法 |
CN108350540A (zh) * | 2015-12-04 | 2018-07-31 | 株式会社神户制钢所 | 抑制了焊接热影响部的低温韧性劣化和焊接热影响部的硬度的具有高屈服强度的非调质钢板 |
CN112575257A (zh) * | 2020-12-04 | 2021-03-30 | 安阳钢铁股份有限公司 | 一种低成本含硼非调质700MPa高强度钢及其制造方法 |
-
2021
- 2021-06-19 CN CN202110682050.2A patent/CN113430460A/zh active Pending
Patent Citations (7)
Publication number | Priority date | Publication date | Assignee | Title |
---|---|---|---|---|
CN101619414A (zh) * | 2009-07-29 | 2010-01-06 | 马鞍山钢铁股份有限公司 | 10.9级含铌非调质冷镦钢及其热轧盘条的轧制方法 |
CN102260823A (zh) * | 2010-05-27 | 2011-11-30 | 宝山钢铁股份有限公司 | 一种经济型屈服强度690MPa级高强钢板及其制造方法 |
CN103147004A (zh) * | 2013-03-21 | 2013-06-12 | 宝山钢铁股份有限公司 | 一种热轧低合金高强度钢板及其制造方法 |
CN103898406A (zh) * | 2014-03-25 | 2014-07-02 | 宝山钢铁股份有限公司 | 一种屈服强度890MPa级低焊接裂纹敏感性钢板及其制造方法 |
CN103952626A (zh) * | 2014-05-12 | 2014-07-30 | 安徽工业大学 | 一种贝氏体非调质紧固件用钢性能的调控方法 |
CN108350540A (zh) * | 2015-12-04 | 2018-07-31 | 株式会社神户制钢所 | 抑制了焊接热影响部的低温韧性劣化和焊接热影响部的硬度的具有高屈服强度的非调质钢板 |
CN112575257A (zh) * | 2020-12-04 | 2021-03-30 | 安阳钢铁股份有限公司 | 一种低成本含硼非调质700MPa高强度钢及其制造方法 |
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