东北大学学报(自然科学版) ›› 2013, Vol. 34 ›› Issue (8): 1118-1122.DOI: -

• 材料与冶金 • 上一篇    下一篇

热轧带钢发射率软测量及影响因素分析

彭良贵1,张殿华1,郭涛2,雷洪刚2   

  1. (1东北大学轧制技术及连轧自动化国家重点实验室,辽宁沈阳110819;2攀枝花钢铁集团公司热轧板厂,四川攀枝花617062)
  • 收稿日期:2012-11-27 修回日期:2012-11-27 出版日期:2013-08-15 发布日期:2013-03-22
  • 通讯作者: 彭良贵
  • 作者简介:彭良贵(1975-),男,四川宣汉人,东北大学讲师,博士;张殿华(1963-),男,内蒙古赤峰人,东北大学教授,博士生导师.
  • 基金资助:
    国家自然科学基金资助项目(51034009).

Emissivity IndirectMeasurement and Analysis for Hot Rolled Strip

PENG Lianggui1, ZHANG Dianhua1, GUO Tao2, LEI Honggang2   

  1. 1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China; 2. Hot Strip Mill, Panzhihua Steel Group, Panzhihua 617062, China.
  • Received:2012-11-27 Revised:2012-11-27 Online:2013-08-15 Published:2013-03-22
  • Contact: PENG Lianggui
  • About author:-
  • Supported by:
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摘要: 根据现场实测带钢温度值,采用温度场反算方法计算了热轧带钢层流冷却之后卷取之前的发射率.主要分析了材料碳当量、带钢厚度、带钢所处的温度区间对发射率的影响.结果表明:带钢所处的温度区间不同,影响带钢发射率的因素不同.在高于550℃的温度区间,不同材质的带钢,其发射率在08±01之间,随材料碳当量的增加,带钢发射率稍微增大,与带钢厚度没有明显的关系;在低于550℃的温度区间,不同材质的带钢,其发射率与碳当量没有明显的关系,但随带钢厚度的增大显著降低.

关键词: 发射率, 温度场, 传热模型, 热轧带钢, 热输出辊道

Abstract: Emissivity of hot rolled strip after laminar cooling and before coiling was calculated by temperature field technology which uses CrankNicolson implicit difference method based on measured temperature data. The effects of carbon equivalent, strip thickness and strip temperature on the emissivity were analyzed. The results showed that the prime influencing factors are different under different strip temperature range. When the temperature is beyond 550℃, the strip emissivity varies between 07 and 09, and with the increasing in carbon equivalent, the accordingly strip emissivity increases smoothly. However, when the temperature is below 550℃, the strip emissivity decreases rapidly with the increasing of strip thickness, and there is no obvious relationship between strip emissivity and carbon equivalent.

Key words: emissivity, temperature field, heat transfer model, hot rolled strip, runout table

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