CN107435122A - Q345降合金系列钢板的轧制工艺 - Google Patents

Q345降合金系列钢板的轧制工艺 Download PDF

Info

Publication number
CN107435122A
CN107435122A CN201710529730.4A CN201710529730A CN107435122A CN 107435122 A CN107435122 A CN 107435122A CN 201710529730 A CN201710529730 A CN 201710529730A CN 107435122 A CN107435122 A CN 107435122A
Authority
CN
China
Prior art keywords
temperature
rolling mill
mill practice
steel plate
finishing
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.)
Pending
Application number
CN201710529730.4A
Other languages
English (en)
Inventor
孔鹏
李进宝
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.)
Xinjiang Bayi Iron and Steel Co Ltd
Original Assignee
Xinjiang Bayi Iron and Steel Co Ltd
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 Xinjiang Bayi Iron and Steel Co Ltd filed Critical Xinjiang Bayi Iron and Steel Co Ltd
Priority to CN201710529730.4A priority Critical patent/CN107435122A/zh
Publication of CN107435122A publication Critical patent/CN107435122A/zh
Pending legal-status Critical Current

Links

Classifications

    • 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
    • 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
    • B21B37/74Temperature control, e.g. by cooling or heating the rolls or the product
    • 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
    • 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
    • C22C38/06Ferrous 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
    • C22C38/12Ferrous alloys, e.g. steel alloys containing tungsten, tantalum, molybdenum, vanadium, or niobium
    • 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

Landscapes

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

Abstract

本发明公开了一种Q345降合金系列钢板的轧制工艺,该工艺所采用板坯的主要元素重量百分比含量为C:0.15‑0.18%;Si:0.25‑0.35%;Mn:1.1‑1.2%;Al:0.025‑0.04%;Nb:0.012‑0.02%;Ti:0.01‑0.02%;采用的工艺流程:板坯加热→除鳞→控制轧制→控制冷却→矫直→精整,主要TMCP工艺参数:待温温度≤920℃,待温厚度≥2.2h;终轧温度790±20℃,返红温度620±20℃,该轧制工艺所轧制的板坯厚度为14‑40mm。

Description

Q345降合金系列钢板的轧制工艺
技术领域
本发明涉及一种Q345降合金系列钢板的轧制工艺。
背景技术
现有的Q345系列采用控制轧制的方法进行生产,在此生产过程中要求钢板的C含量在0.15%左右,Mn含量在1.5%左右。在现有的生产条件下,要求控制钢板的终轧温度在840℃左右,以保证钢板的力学性能满足国标要求。现有技术条件下,由于终轧温度的限制,制约了Q345系列钢板产能的提升;而且,由于Mn含量在1.5%左右,合金含量较高,限制了此钢种的降成本空间。
发明内容
本发明的目的在于提供一种Q345降合金系列钢板的轧制工艺,能够有效降低生产成本,提高该系列钢板产能。
本发明的目的是这样实现的,一种Q345降合金系列钢板的轧制工艺,该工艺所采用板坯的主要元素重量百分比含量为C:0.15-0.18%;Si:0.25-0.35%;Mn:1.1-1.2%;Al:0.025-0.04%;Nb:0.012-0.02%;Ti:0.01-0.02%;采用的工艺流程:板坯加热→除鳞→控制轧制→控制冷却→矫直→精整,主要TMCP工艺参数:待温温度≤920℃,待温厚度≥2.2h;终轧温度790±20℃,返红温度620±20℃,该轧制工艺所轧制的板坯厚度为14-40mm。
成分在C、Mn含量来看属于Q235系列钢板,添加适量的Nb以保证其在TMCP轧制过程中能细化晶粒从而提高钢板的强度,添加适量的Ti以保证钢坯在连铸过程中减少铸坯表面裂纹的产生。本发明生产钢板的性能可以满足GB1591-2008的要求。本发明适用于厚度规格在14-40mm之间的Q345B钢板。通过继续调整TMCP工艺参数可以获得更高级别的Q345系列钢板,如Q345CD等。
具体实施方式
一种Q345降合金系列钢板的轧制工艺,以轧制厚度为20mm的板坯为例,该工艺所采用板坯的主要元素重量百分比含量为C:0.15-0.18%;Si:0.25-0.35%;Mn:1.1-1.2%;Al:0.025-0.04%;Nb:0.012-0.02%;Ti:0.01-0.02%;采用的工艺流程:板坯加热→除鳞→控制轧制→控制冷却→矫直→精整,主要TMCP工艺参数:待温温度890℃,待温厚度3h;终轧温度790℃,返红温度620℃。

Claims (1)

1.一种Q345降合金系列钢板的轧制工艺,其特征在于该工艺所采用板坯的主要元素重量百分比含量为C:0.15-0.18%;Si:0.25-0.35%;Mn:1.1-1.2%;Al:0.025-0.04%;Nb:0.012-0.02%;Ti:0.01-0.02%;采用的工艺流程:板坯加热→除鳞→控制轧制→控制冷却→矫直→精整,主要TMCP工艺参数:待温温度≤920℃,待温厚度≥2.2h;终轧温度790±20℃,返红温度620±20℃,该轧制工艺所轧制的板坯厚度为14-40mm。
CN201710529730.4A 2017-07-02 2017-07-02 Q345降合金系列钢板的轧制工艺 Pending CN107435122A (zh)

Priority Applications (1)

Application Number Priority Date Filing Date Title
CN201710529730.4A CN107435122A (zh) 2017-07-02 2017-07-02 Q345降合金系列钢板的轧制工艺

Applications Claiming Priority (1)

Application Number Priority Date Filing Date Title
CN201710529730.4A CN107435122A (zh) 2017-07-02 2017-07-02 Q345降合金系列钢板的轧制工艺

Publications (1)

Publication Number Publication Date
CN107435122A true CN107435122A (zh) 2017-12-05

Family

ID=60459665

Family Applications (1)

Application Number Title Priority Date Filing Date
CN201710529730.4A Pending CN107435122A (zh) 2017-07-02 2017-07-02 Q345降合金系列钢板的轧制工艺

Country Status (1)

Country Link
CN (1) CN107435122A (zh)

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110616379A (zh) * 2019-09-27 2019-12-27 邯郸钢铁集团有限责任公司 一种q345c钢及其生产方法

Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103031489A (zh) * 2012-06-03 2013-04-10 宝钢集团新疆八一钢铁有限公司 一种q345b钢板的生产方法
CN103045939A (zh) * 2012-12-27 2013-04-17 安阳钢铁股份有限公司 一种资源节约型q345低合金系列钢板及其生产方法
CN103409686A (zh) * 2013-08-19 2013-11-27 宝钢集团新疆八一钢铁有限公司 一种q345d钢板的生产方法
CN103725964A (zh) * 2013-12-30 2014-04-16 南阳汉冶特钢有限公司 一种新型低合金钢q345系列特厚板及其生产方法
CN105420599A (zh) * 2015-12-29 2016-03-23 新疆八一钢铁股份有限公司 一种q345降合金钢板的生产方法

Patent Citations (5)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN103031489A (zh) * 2012-06-03 2013-04-10 宝钢集团新疆八一钢铁有限公司 一种q345b钢板的生产方法
CN103045939A (zh) * 2012-12-27 2013-04-17 安阳钢铁股份有限公司 一种资源节约型q345低合金系列钢板及其生产方法
CN103409686A (zh) * 2013-08-19 2013-11-27 宝钢集团新疆八一钢铁有限公司 一种q345d钢板的生产方法
CN103725964A (zh) * 2013-12-30 2014-04-16 南阳汉冶特钢有限公司 一种新型低合金钢q345系列特厚板及其生产方法
CN105420599A (zh) * 2015-12-29 2016-03-23 新疆八一钢铁股份有限公司 一种q345降合金钢板的生产方法

Cited By (1)

* Cited by examiner, † Cited by third party
Publication number Priority date Publication date Assignee Title
CN110616379A (zh) * 2019-09-27 2019-12-27 邯郸钢铁集团有限责任公司 一种q345c钢及其生产方法

Similar Documents

Publication Publication Date Title
CN109266815B (zh) 在线淬火高强钢板的板形控制方法
CN106636747B (zh) 一种采用中厚板轧机二次退火生产工业纯钛板的制造方法
CN106987773A (zh) 一种高强钢板及其板形控制方法
JP2016524653A5 (zh)
CN107557673B (zh) 一种高延伸率高强热轧酸洗钢板及其制造方法
KR101714916B1 (ko) 냉간단조성이 우수한 선재 및 그 제조방법
JP6138347B2 (ja) 金属ストリップを製造するための方法
CN101147920A (zh) 含钒汽车梁用热轧钢板表面氧化铁皮控制方法
CN105689408A (zh) 一种低碳铝镇静钢边部氧化铁皮的热轧控制方法
CN107099752A (zh) 一种低合金12Cr1MoV钢板及其生产方法
CN107746911A (zh) 一种锻造余热淬火钢的生产方法
CN102304668B (zh) 一种高性能特厚钢板的制造方法
CN102399959A (zh) 一种减小钢轨脱碳层厚度的方法
CN104831167A (zh) 一种q550e高强用钢热轧板卷及其生产方法
CN104342598A (zh) 一种600MPa级别汽车大梁用热轧钢带的生产方法
CN108866431A (zh) 一种工程机械高淬透性用钢及其控轧控冷制备方法
CN104561826A (zh) 低合金高强度结构钢q460c带钢及其生产工艺
CN104018060B (zh) 150mm厚保探伤保性能Q345B钢板的生产方法
CN104498840B (zh) 锯片用钢及其生产方法
CN108796191B (zh) 一种if钢薄带的制备方法
CN107435122A (zh) Q345降合金系列钢板的轧制工艺
CN103447295B (zh) 一种低合金结构钢热轧钢板的制造方法
CN105274434B (zh) 一种能降低由偏析引起开裂的热轧低合金钢及生产方法
CN108728747A (zh) 一种消除大梁钢b510l表面黑灰的方法
CN107119237A (zh) Q690d中厚钢板和降低q690d中厚钢板能耗的生产方法

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
WD01 Invention patent application deemed withdrawn after publication
WD01 Invention patent application deemed withdrawn after publication

Application publication date: 20171205