课题基金基金详情
精炼钢包用透气塞服役过程中狭缝内流固耦合传热及其热应力损毁研究
结题报告
批准号:
51974211
项目类别:
面上项目
资助金额:
60.0 万元
负责人:
贺铸
依托单位:
学科分类:
钢铁冶金
结题年份:
2023
批准年份:
2019
项目状态:
已结题
项目参与者:
贺铸
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中文摘要
炉外精炼是高品质钢生产过程的重要环节,吹氩元件透气塞的使用寿命已成为钢包精炼安全生产的关键因素和钢包寿命的限制性环节。针对狭缝式透气塞长时间承受温度急剧变化引起热应力失效,却又对狭缝内氩气的微尺度流动及其与透气塞热应力、变形间相互作用缺乏认识,本项目以精炼钢包用狭缝式透气塞为研究对象,基于非连续性微尺度流动和流固耦合传热分析方法,研究气体流动及微观通道特性等对吹氩过程流固界面传热的影响,建立透气塞吹氩传热过程的数学模型,揭示氩气与透气砖之间流动/变形/传热的相互作用规律;利用虚拟裂纹模型并考虑蠕变效应,反向拟合实测载荷位移曲线,获取材料的真实拉伸强度等参数;基于流固耦合传热模型和材料参数,真实再现透气塞在高温服役过程中热应力分布与温度的瞬态变化,建立高温服役条件下透气塞的寿命预测和定量评价体系;结合试验设计和模拟探究其最小化不可逆形变的物性参数范围,推动透气塞用耐火材料使用寿命的提高。
英文摘要
Secondary refining technology is an imperative process to make high quality steels and the lifetime of the purging plugs is the key functional for the safety in refining production. Thermal stress due to the longtime rapid temperature change during the refining process is the efficient cause of the purging plugs fracture failure. At the same time, the micro-fluid motion in the slit as well as the interaction between the fluid motion and the thermal stress/deformation are still lack of awareness. Focused on this, the present project is specification of research target key with the purging plugs for the ladle furnace and micro-channel heat transfer in slit of the purging plugs are investigate firstly to fully master the impacts of the discontinuous fluid motion of the argon on the heat transfer between the gas and the purging plugs during the argon blowing process. Based on this, the numerical models, which include the micro fluid description and the fluid structure heat interaction, will be developed to study the heat transfer process during the argon blowing process. By computing the relative length of the interface crack, the transcrystalline crack and the matrix crack, irreversible mechanical behavior of corundum-spinel refractories at high temperatures are characterized. The real tensile strength, fracture energy and the Strain displacement curve are obtained by using the virtual crack model and the creep effects as well as the inversely estimation methods. The transient variation of the thermal stress and thermochemical wear processes in high temperature service will be realistically reproduced. Lifetime prediction and quantitative evaluation system of the purging plugs under service conditions will be build based the developed model, which will offer the fundamental for the optimization of purging plug structure and material performance. Combining with the experimental design and simulation, the range of physical parameters that could minimize irreversible deformation will be explored, and the refractories for purging plugs in the range of objective physical parameters will be prepared.As a result, the improvement of such knowledge will be promoted the lifetime of the refractories for purging plugs and the efficiency and quality of the refining process through the present investigation.
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DOI:10.2355/isijinternational.ISIJINT-2020-048
发表时间:2021
期刊:ISIJ International
影响因子:--
作者:Tan Fangguan;He Zhu;Jin Shengli;Wang Qiang;Pan Liping;Li Yawei;Li Baokuan
通讯作者:Li Baokuan
DOI:10.1007/s42243-022-00749-9
发表时间:2022-02
期刊:Journal of Iron and Steel Research International
影响因子:2.5
作者:Fang-guan Tan;S. Jin;Z. He;Xiong Liang;Ya-wei Li;Jing Li
通讯作者:Fang-guan Tan;S. Jin;Z. He;Xiong Liang;Ya-wei Li;Jing Li
DOI:10.1016/j.ceramint.2022.06.076
发表时间:2022
期刊:Ceramics International
影响因子:5.2
作者:Yang Wu;Guangqiang Li;Fangguan Tan;Yawei Li;Zhu He
通讯作者:Zhu He
DOI:10.1016/j.jeurceramsoc.2020.11.039
发表时间:2021-01-22
期刊:JOURNAL OF THE EUROPEAN CERAMIC SOCIETY
影响因子:5.7
作者:Liang, Xiong;Li, Yawei;Sang, Shaobai
通讯作者:Sang, Shaobai
DOI:10.1002/srin.201900606
发表时间:2020-06-01
期刊:STEEL RESEARCH INTERNATIONAL
影响因子:2.2
作者:Tan, Fangguan;He, Zhu;Li, Baokuan
通讯作者:Li, Baokuan
麦尔兹窑内移动床层间煤粉的燃烧特性及石灰石分解反应规律研究
  • 批准号:
    51404176
  • 项目类别:
    青年科学基金项目
  • 资助金额:
    25.0万元
  • 批准年份:
    2014
  • 负责人:
    贺铸
  • 依托单位:
国内基金
海外基金