CN108425002B - 一种12Cr2Mo1热轧容器钢板的制备方法 - Google Patents

一种12Cr2Mo1热轧容器钢板的制备方法 Download PDF

Info

Publication number
CN108425002B
CN108425002B CN201810321667.XA CN201810321667A CN108425002B CN 108425002 B CN108425002 B CN 108425002B CN 201810321667 A CN201810321667 A CN 201810321667A CN 108425002 B CN108425002 B CN 108425002B
Authority
CN
China
Prior art keywords
temperature
isothermal holding
hot rolling
rolling
preparation
Prior art date
Legal status (The legal status is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the status listed.)
Expired - Fee Related
Application number
CN201810321667.XA
Other languages
English (en)
Other versions
CN108425002A (zh
Inventor
李长生
王期文
涂兴洋
陈洁
陈礼清
Current Assignee (The listed assignees may be inaccurate. Google has not performed a legal analysis and makes no representation or warranty as to the accuracy of the list.)
Northeastern University China
Original Assignee
Northeastern University China
Priority date (The priority date is an assumption and is not a legal conclusion. Google has not performed a legal analysis and makes no representation as to the accuracy of the date listed.)
Filing date
Publication date
Application filed by Northeastern University China filed Critical Northeastern University China
Priority to CN201810321667.XA priority Critical patent/CN108425002B/zh
Publication of CN108425002A publication Critical patent/CN108425002A/zh
Application granted granted Critical
Publication of CN108425002B publication Critical patent/CN108425002B/zh
Expired - Fee Related legal-status Critical Current
Anticipated expiration legal-status Critical

Links

Classifications

    • 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
    • C21D8/0226Hot 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
    • C21D8/0247Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment
    • C21D8/0263Modifying the physical properties by deformation combined with, or followed by, heat treatment during manufacturing of plates or strips characterised by the heat treatment following hot rolling
    • CCHEMISTRY; METALLURGY
    • 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
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/22Ferrous alloys, e.g. steel alloys containing chromium with molybdenum or tungsten
    • CCHEMISTRY; METALLURGY
    • C22METALLURGY; FERROUS OR NON-FERROUS ALLOYS; TREATMENT OF ALLOYS OR NON-FERROUS METALS
    • C22CALLOYS
    • C22C38/00Ferrous alloys, e.g. steel alloys
    • C22C38/18Ferrous alloys, e.g. steel alloys containing chromium
    • C22C38/28Ferrous alloys, e.g. steel alloys containing chromium with titanium or zirconium
    • 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/002Bainite
    • 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
    • C21D2211/00Microstructure comprising significant phases
    • C21D2211/005Ferrite

Landscapes

  • Chemical & Material Sciences (AREA)
  • Engineering & Computer Science (AREA)
  • Materials Engineering (AREA)
  • Mechanical Engineering (AREA)
  • Metallurgy (AREA)
  • Organic Chemistry (AREA)
  • Physics & Mathematics (AREA)
  • Thermal Sciences (AREA)
  • Crystallography & Structural Chemistry (AREA)
  • Heat Treatment Of Steel (AREA)

Abstract

本发明涉及一种12Cr2Mo1热轧容器钢板的制备方法,属于冶金材料技术领域。本发明所述制备方法为:对热轧后的钢板升温至900‑940℃,保温30‑50min,进行一次保温处理;一次保温处理后降温至670‑730℃,保温20‑30min,进行二次保温处理,二次保温处理后降至室温。本发明所述的连续热处理方法生产效率高。

Description

一种12Cr2Mo1热轧容器钢板的制备方法
技术领域
本发明涉及一种12Cr2Mo1热轧容器钢板的制备方法,属于冶金材料技术领域。
背景技术
随着石油、化工等行业的迅速发展,对12Cr2Mo1热轧容器钢提出了更高的要求。12Cr2Mo1热轧容器钢在中高温(375-595℃)具有良好的组织和性能稳定性。目前,12Cr2Mo1热轧容器钢板的热处理工艺是正火+回火,但是,该方法的生产效率较低。
发明内容
本发明通过采用连续热处理方法,解决了上述问题。
本发明提供了一种12Cr2Mo1热轧容器钢板的制备方法,所述制备方法为:
对热轧后的钢板升温至900-940℃,保温30-50min,进行一次保温处理;一次保温处理后降温至670-730℃,保温20-30min,进行二次保温处理,二次保温处理后降至室温。
本发明优选为所述制备方法包括如下步骤:
①按设计的成分冶炼钢水并连铸成220-320mm厚的板坯,其成分按重量百分比为:C 0.12%、Si 0.15%、Mn 0.4-0.6%、Cr 2.18%、Mo 1%、Ti 0.03%、P≤0.01%、S≤0.003%、Sn≤0.008%、As≤0.01%、Sb≤0.003%、Pb≤0.01%、N≤0.006%、Fe余量;
②将步骤①所得产品加热至1200℃,保温1-2h,出炉后利用高压水除磷,再进行两阶段控制轧制,得到12-48mm厚的钢板;
③将步骤②所得产品进行一道次平整,热轧后利用水冷至550-600℃,冷速为20-30℃/s,再空冷至室温;
④将步骤③所得产品升温至900-940℃,保温30-50min,进行一次保温处理,一次保温处理后降温至670-730℃,保温20-30min,进行二次保温处理,二次保温处理后降至室温。
本发明优选为所述两阶段控制轧制为:
粗轧的开轧温度为1000-1100℃,终轧温度为980-1040℃,轧制为3-6道次,总压下率为57-77%;
精轧的开轧温度为880-920℃,终轧温度为820-850℃,轧制为3-5道次,总压下率为63-76%。
12Cr2Mo1热轧容器钢板的现有热处理方法为:正火(NS)+回火(TS)处理,工艺如图1所示。
本发明所述12Cr2Mo1热轧容器钢板的连续热处理方法为:包括加热段(HS段)、一次保温段(1SS段)、一次空冷段(1AC段)、二次保温段(2TS段)、二次冷却段(2AC),工艺如图2所示。
本发明所述热轧钢板经过加热、一次保温和一次空冷后,微合金化合物充分固溶后弥散析出,在二次保温(2TS段)过程中,促进了碳的扩散,有利于碳化物在晶内和晶界的析出,提高了钢的强度和韧性。
与现有的正火+回火工艺相比,本发明的优点在于:
①本发明所述的连续热处理方法生产效率高;
②本发明在670-730℃二次保温过程中,由于有足够的形核时间,可充分促进钢中M23C6碳化物的形核和弥散析出,提高了钢的抗拉强度和裂纹扩展阻力,进而也提高了钢的韧性。
附图说明
本发明附图5幅,
图1为12Cr2Mo1热轧容器钢板现有热处理方法的温度-时间曲线图;
图2为本发明所述12Cr2Mo1热轧容器钢板连续热处理方法的温度-时间曲线图;
图3为本发明实施例1所述12Cr2Mo1热轧容器钢板连续热处理后的微观组织图;
图4为本发明实施例2所述12Cr2Mo1热轧容器钢板连续热处理后的微观组织图;
图5为本发明实施例3所述12Cr2Mo1热轧容器钢板连续热处理后的微观组织图。
具体实施方式
下述非限制性实施例可以使本领域的普通技术人员更全面地理解本发明,但不以任何方式限制本发明。
采用FEI Quanta 600型扫描电子显微镜观察下述实施例所述12Cr2Mo1热轧容器钢板连续热处理后的组织;
下述室温拉伸试样按GB/T228-2002制成矩形截面标准拉伸试样,室温拉伸在CMT5105-SANS微机控制电子万能实验机上进行;
下述冲击实验在落锤冲击实验机上进行。
实施例1
一种12Cr2Mo1热轧容器钢板的制备方法,所述制备方法包括如下步骤:
①按设计的成分冶炼钢水并连铸成220mm厚的板坯,其成分按重量百分比为:C0.12%、Si 0.15%、Mn 0.4-0.6%、Cr 2.18%、Mo 1%、Ti 0.03%、P≤0.01%、S≤0.003%、Sn≤0.008%、As≤0.01%、Sb≤0.003%、Pb≤0.01%、N≤0.006%、Fe余量;
②将步骤①所得产品加热至1200℃,保温1h,出炉后利用高压水除磷,再进行两阶段控制轧制,其中,粗轧的开轧温度为1100℃,终轧温度为1040℃,轧制为6道次,总压下率为76.82%;精轧的开轧温度为920℃,终轧温度为850℃,轧制为5道次,总压下率为76%,得到12mm厚的钢板;
③将步骤②所得产品进行一道次平整,热轧后利用水冷至600℃,冷速为30℃/s,再空冷至室温;
④将步骤③所得产品升温至900℃,保温30min,进行一次保温处理,一次保温处理后降温至670℃,保温20min,进行二次保温处理,二次保温处理后降至室温;
其金相组织如图3所示,为均匀分布的贝氏体铁素体,并带有少量的马奥岛;
其性能检测结果为:室温屈服强度420MPa,抗拉强度625MPa,断后伸长率23.3%,室温冲击功255J。
实施例2
一种12Cr2Mo1热轧容器钢板的制备方法,所述制备方法包括如下步骤:
①按设计的成分冶炼钢水并连铸成260mm厚的板坯,其成分按重量百分比为:C0.12%、Si 0.15%、Mn 0.4-0.6%、Cr 2.18%、Mo 1%、Ti 0.03%、P≤0.01%、S≤0.003%、Sn≤0.008%、As≤0.01%、Sb≤0.003%、Pb≤0.01%、N≤0.006%、Fe余量;
②将步骤①所得产品加热至1200℃,保温1.5h,出炉后利用高压水除磷,再进行两阶段控制轧制,其中,粗轧的开轧温度为1050℃,终轧温度为1000℃,轧制为4道次,总压下率为68.85%;精轧的开轧温度为900℃,终轧温度为830℃,轧制为4道次,总压下率为63.75%,得到30mm厚的钢板;
③将步骤②所得产品进行一道次平整,热轧后利用水冷至600℃,冷速为25℃/s,再空冷至室温;
④将步骤③所得产品升温至920℃,保温45min,进行一次保温处理,一次保温处理后降温至700℃,保温20min,进行二次保温处理,二次保温处理后降至室温;
其金相组织如图4所示,为均匀分布的贝氏体铁素体,并带有少量的马奥岛;
其性能检测结果为:室温屈服强度421MPa,抗拉强度565MPa,断后伸长率21.2%,室温冲击功188J。
实施例3
一种12Cr2Mo1热轧容器钢板的制备方法,所述制备方法包括如下步骤:
①按设计的成分冶炼钢水并连铸成320mm厚的板坯,其成分按重量百分比为:C0.12%、Si 0.15%、Mn 0.4-0.6%、Cr 2.18%、Mo 1%、Ti 0.03%、P≤0.01%、S≤0.003%、Sn≤0.008%、As≤0.01%、Sb≤0.003%、Pb≤0.01%、N≤0.006%、Fe余量;
②将步骤①所得产品加热至1200℃,保温2h,出炉后利用高压水除磷,再进行两阶段控制轧制,其中,粗轧的开轧温度为1000℃,终轧温度为980℃,轧制为3道次,总压下率为57.82%;精轧的开轧温度为880℃,终轧温度为820℃,轧制为3道次,总压下率为64.44%,得到48mm厚的钢板;
③将步骤②所得产品进行一道次平整,热轧后利用水冷至550℃,冷速为20℃/s,再空冷至室温;
④将步骤③所得产品升温至940℃,保温50min,进行一次保温处理,一次保温处理后降温至730℃,保温30min,进行二次保温处理,二次保温处理后降至室温;
其金相组织如图5所示,为均匀分布的贝氏体铁素体,并带有少量的马奥岛;
其性能检测结果为:室温屈服强度400MPa,抗拉强度503MPa,断后伸长率20.2%,室温冲击功125J。

Claims (1)

1.一种12Cr2Mo1热轧容器钢板的制备方法,其特征在于:所述制备方法包括如下步骤:
①按设计的成分冶炼钢水并连铸成220-320mm厚的板坯,其成分按重量百分比为:C0.12%、Si 0.15%、Mn 0.4-0.6%、Cr 2.18%、Mo 1%、Ti 0.03%、P≤0.01%、S≤0.003%、Sn≤0.008%、As≤0.01%、Sb≤0.003%、Pb≤0.01%、N≤0.006%、Fe余量;
②将步骤①所得产品加热至1200℃,保温1-2h,出炉后利用高压水除磷,再进行两阶段控制轧制,得到12-48mm厚的钢板;
所述两阶段控制轧制为:
粗轧的开轧温度为1000-1100℃,终轧温度为980-1040℃,轧制为3-6道次,总压下率为57-77%;
精轧的开轧温度为880-920℃,终轧温度为820-850℃,轧制为3-5道次,总压下率为63-76%;
③将步骤②所得产品进行一道次平整,热轧后利用水冷至550-600℃,冷速为20-30℃/s,再空冷至室温;
④将步骤③所得产品升温至900-940℃,保温30-50min,进行一次保温处理,一次保温处理后降温至670-730℃,保温20-30min,进行二次保温处理,二次保温处理后降至室温。
CN201810321667.XA 2018-04-11 2018-04-11 一种12Cr2Mo1热轧容器钢板的制备方法 Expired - Fee Related CN108425002B (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201810321667.XA CN108425002B (zh) 2018-04-11 2018-04-11 一种12Cr2Mo1热轧容器钢板的制备方法

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201810321667.XA CN108425002B (zh) 2018-04-11 2018-04-11 一种12Cr2Mo1热轧容器钢板的制备方法

Publications (2)

Publication Number Publication Date
CN108425002A CN108425002A (zh) 2018-08-21
CN108425002B true CN108425002B (zh) 2019-10-01

Family

ID=63161082

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201810321667.XA Expired - Fee Related CN108425002B (zh) 2018-04-11 2018-04-11 一种12Cr2Mo1热轧容器钢板的制备方法

Country Status (1)

Country Link
CN (1) CN108425002B (zh)

Families Citing this family (2)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110106308A (zh) * 2019-04-30 2019-08-09 无锡市法兰锻造有限公司 一种高性能12Cr2Mo1锻件的制造方法
CN114410895B (zh) * 2021-12-29 2024-01-23 舞阳钢铁有限责任公司 一种减少合金钢淬火变形的方法

Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1847413A (zh) * 2005-04-12 2006-10-18 万向钱潮股份有限公司 20Cr2Ni4钢材的正火热处理工艺
CN102312160A (zh) * 2011-07-08 2012-01-11 南阳汉冶特钢有限公司 一种特厚临氢设备用钢板12Cr2Mo1R钢及生产方法
CN103215512A (zh) * 2013-03-16 2013-07-24 南阳汉冶特钢有限公司 一种压力容器钢12Cr2Mo1R及其150mm厚板的生产工艺
CN103882200A (zh) * 2013-12-12 2014-06-25 柳州金特机械有限公司 对ZG35SiMn钢进行正火回火的热处理工艺

Family Cites Families (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
KR101641797B1 (ko) * 2014-12-26 2016-07-22 주식회사 포스코 마르텐사이트계 스테인리스강 및 그 제조 방법

Patent Citations (4)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN1847413A (zh) * 2005-04-12 2006-10-18 万向钱潮股份有限公司 20Cr2Ni4钢材的正火热处理工艺
CN102312160A (zh) * 2011-07-08 2012-01-11 南阳汉冶特钢有限公司 一种特厚临氢设备用钢板12Cr2Mo1R钢及生产方法
CN103215512A (zh) * 2013-03-16 2013-07-24 南阳汉冶特钢有限公司 一种压力容器钢12Cr2Mo1R及其150mm厚板的生产工艺
CN103882200A (zh) * 2013-12-12 2014-06-25 柳州金特机械有限公司 对ZG35SiMn钢进行正火回火的热处理工艺

Non-Patent Citations (1)

* Cited by examiner, † Cited by third party
Title
压力容器用12Cr2Mo1R钢150mm超厚板热处理对组织和性能的影响;何贝等;《特殊钢》;20151231;第36卷(第6期);第45-48页 *

Also Published As

Publication number Publication date
CN108425002A (zh) 2018-08-21

Similar Documents

Publication Publication Date Title
CN104532126B (zh) 一种低屈强比超高强度热轧q&p钢及其制造方法
US11261504B2 (en) Method for producing ultra-high-strength martensitic cold-rolled steel sheet by ultra rapid heating process
CN105506494B (zh) 一种屈服强度800MPa级高韧性热轧高强钢及其制造方法
CN106868415B (zh) 超高强度超细晶铁素体/纳米贝氏体双相钢及其制备方法
CN112981235A (zh) 一种屈服强度420MPa级的调质型建筑结构用钢板及其生产方法
CN104593675A (zh) 一种同时具有twip与trip效应金属材料制备方法
WO2022206911A1 (zh) 抗拉强度≥1180MPa的低碳低合金Q&P钢或热镀锌Q&P钢及其制造方法
CN104195455A (zh) 一种基于碳配分原理的热冲压烘烤韧化钢及其加工方法
CN105886717B (zh) 一种钢的锻造余热正火方法
CN105331890B (zh) 一种在线淬火生产高韧性5Ni钢中厚板的方法
CN107012398A (zh) 一种铌微合金化trip钢及其制备方法
CN108411203A (zh) 高硅高铝混凝土搅拌车用nm300耐磨钢及生产方法
CN104846293A (zh) 高强韧性钢板及其制备方法
CN109266812A (zh) 一种煤矿液压支架用低屈强比高强度调质钢及其制造方法
CN106756547A (zh) 一种屈服强度500MPa级冷轧钢板及其制备方法
CN108085591A (zh) 一种具有低焊接裂纹敏感性能的钢板htnm400及其生产方法
CN108425002B (zh) 一种12Cr2Mo1热轧容器钢板的制备方法
CN104593573A (zh) 一种高效提升非调质钢强韧性的复合形变热处理强化方法
US20240167138A1 (en) Dual-phase steel and hot-dip galvanized dual-phase steel having tensile strength greater than or equal to 980mpa and method for manufacturing same by means of rapid heat treatment
CN106957995B (zh) 细晶铁素体/低温贝氏体双相低碳钢及其制备方法
CN105251783B (zh) 一种综合力学性能和氧化铁皮结构控制的柔性化生产方法
CN106929772A (zh) 一种钢棒用钢及其制备方法和钢棒
CN107130093B (zh) 一种高强蠕墨铸铁板材的制备方法
CN109518092A (zh) 高强塑积铌微合金化低硅含铝热轧trip钢及制备方法
CN109161647A (zh) 中碳调质锰钢铸钢件的热处理方法

Legal Events

Date Code Title Description
PB01 Publication
PB01 Publication
SE01 Entry into force of request for substantive examination
SE01 Entry into force of request for substantive examination
GR01 Patent grant
GR01 Patent grant
CF01 Termination of patent right due to non-payment of annual fee
CF01 Termination of patent right due to non-payment of annual fee

Granted publication date: 20191001