Research on measurement of the surface emissivity of casting billets

被引：0
|
作者：
Wang P. [1 ]
Xie Z. [1 ]
Hu Z. [1 ]
机构：
[1] College of Information Science and Engineering, Northeastern University, Shenyang, 110819, Liaoning
来源：
Hu, Zhenwei (huzhenwei@ise.neu.edu.cn) | 1600年 / Chinese Optical Society卷 / 36期
关键词：
Emissivity of casting billet; Measurement; Oxide film; Radiation thermometry; Uncertainty;
D O I：
10.3788/AOS201636.0412001
中图分类号：
学科分类号：
摘要：
Surface emissivity of casting billets is an important parameter that affects the temperature measurement on the billets. In this paper, an experimental apparatus is established by the method of radiation energy comparison. The apparatus consists of a heating system, an angle rotating system, a temperature detection system, a vacuum control system and a background radiation shielding system. The emissivity of GCr15 steel at different angles, temperatures and oxidations is measured by this apparatus. Research shows that emissivity increases first and then decreases with the increase of the angle. Emissivity increases with the increasing oxidation, and the angel of the maximum emissivity is gradually reduced. In addition, emissivity increases with the increasing temperature but the influence of the temperature is limited once the temperature is over 1000℃. At last, the measurement uncertainty is analyzed and the maximum emissivity uncertainty of the deep oxidized GCr15 steel is 0.0205 when the temperature is above 1000℃. © 2016, Chinese Lasers Press. All right reserved.
引用
收藏
页数：8
相关论文
共 13 条
  • [1] Bai H., Zhang Y., Hu Z., Et al., Research on the measuring instrument for surface temperature field of casting billet, Chinese J Scientific Instrument, 33, 6, pp. 1392-1399, (2012)
  • [2] Campo L.D., Perez-Saez R.B., Esquisabel X., Et al., New experimental device for infrared spectral directional emissivity measurements in a controlled environment, Review of Scientific Instruments, 77, 11, (2006)
  • [3] Campo L.D., Perez-Saez R.B., Tello M.J., Et al., Armco iron normal spectral emissivity measurements, International Journal of Thermophysics, 27, 4, pp. 1160-1172, (2006)
  • [4] Liu Y., Hu Z., Shi D., An experimental apparatus for emissivity measurement, Acta Optica Sinica, 30, 3, pp. 772-776, (2010)
  • [5] Liu H., Ji Y., Zhang F., Et al., Dispersive properties of optical constants of some metallic oxide thin films in the mid-infrared regions, Acta Optica Sinica, 34, 8, (2014)
  • [6] Tohru I., Tohru F., Shigenobu W., Emissivity modeling of metals during the growth of oxide film and comparison of the model with experimental results, Applied Optics, 42, 13, pp. 2317-2326, (2003)
  • [7] Tohru F., Tohru I., Experimental apparatus for radiometric emissivity measurements of metals, Review of Scientific Instruments, 71, 7, pp. 2843-2847, (2000)
  • [8] Wen C.D., Investigation of steel emissivity behaviors examination of multispectral radiation thermometry (MRT) emissivity models, International Journal of Heat and Mass Transfer, 53, 9-10, pp. 2035-2043, (2010)
  • [9] Yajima T., Yamaguchi Y., Geological mapping of the Francistown area in northeastern Botswana by surface temperature and spectral emissivity information derived from advanced spaceborne thermal emission and reflection radiometer (ASTER) thermal infrared data, Ore Geology Reviews, 53, 8, pp. 134-144, (2013)
  • [10] Zhang L., Yang J., Jiang Y., Et al., Research on target image matching algorithm for binocular CCD ranging, Laser & Optoelectronics Progress, 51, 9, (2014)
12