东北大学学报:自然科学版 ›› 2017, Vol. 38 ›› Issue (8): 1093-1098.DOI: 10.12068/j.issn.1005-3026.2017.08.007

• 材料与冶金 • 上一篇    下一篇

空心环形件电渣熔铸内结晶器的对流换热系数

王安国1,2, 姜周华1, 娄延春2, 熊云龙2   

  1. (1. 东北大学 冶金学院, 辽宁 沈阳110819; 2. 沈阳铸造研究所, 辽宁 沈阳110022)
  • 收稿日期:2016-03-20 修回日期:2016-03-20 出版日期:2017-08-15 发布日期:2017-08-12
  • 通讯作者: 王安国
  • 作者简介:王安国(1979-),男,辽宁盖州人,东北大学博士研究生,沈阳铸造研究所高级工程师; 姜周华(1963-),男,浙江萧山人,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(51674070, 51434004, 51475313).

Heat Transfer Coefficient for ESR Inner Mold of Hollow Cylindrical Casting

WANG An-guo1,2, JIANG Zhou-hua1, LOU Yan-chun2, XIONG Yun-long2   

  1. 1. School of Metallurgy, Northeastern University, Shenyang 110819, China; 2. Shenyang Research Institute of Foundry, Shenyang 110022, China.
  • Received:2016-03-20 Revised:2016-03-20 Online:2017-08-15 Published:2017-08-12
  • Contact: WANG An-guo
  • About author:-
  • Supported by:
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摘要: “空心环形件电渣熔铸”内结晶器对流换热系数α○in是衡量其内结晶器冷却效果的核心参数.本文将实测的内结晶器铜板水冷面温度、流体温度值代入基本算式求取并利用有限元分析验证来确定α○in的取值范围,通过比照水平环形套管对流换热系数的经验公式来确定计算α○in的经验公式.该经验公式用温差函数、效应因子、速度函数解析了内结晶器水模型温差、短管效应、内外径及高度等形状因素对α○in的综合影响,提供了α○in数据库建立的理论依据.

关键词: 空心环形件电渣熔铸, 内结晶器, 对流换热系数, 水速, 温度

Abstract: ESR hollow cylindrical casting inner mold heat transfer coefficient α○in is the core parameter to measure the effect of inner mold cooling. The range of α○in was determined by inputting the measured values, including cooling surface temperature of the inner mold copper plate and water temperature, into basic formula and finite element analysis. The empirical formula for calculating αin was determined by comparing with the empirical formula of heat transfer coefficient for annular casting. The experiential formula of α○in explicates the effects of temperature difference, the short pipe effect and the shape factor of inner mold water model on αin by using temperature difference function, effector and velocity function, which provides a theoretical basis for α○in database establishment.

Key words: ESR hollow cylindrical casting, inner mold, heat transfer coefficient, water velocity, temperature

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