Journal of Northeastern University Natural Science ›› 2017, Vol. 38 ›› Issue (10): 1399-1404.DOI: 10.12068/j.issn.1005-3026.2017.10.007

• Materials & Metallurgy • Previous Articles     Next Articles

Experimental Studies on Heat Transfer of Ultra Fast Cooling for Steel Plate

FU Tian-liang, DENG Xiang-tao, HAN Jun,WANG Zhao-dong   

  1. State Key Laboratory of Rolling and Automation, Northeastern University, Shenyang 110819, China.
  • Received:2016-04-29 Revised:2016-04-29 Online:2017-10-15 Published:2017-10-13
  • Contact: FU Tian-liang
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Abstract: Spray jet cooling method was used to study the surface jet flow structure, heat transfer zone and plate temperature drop during the ultra fast cooling process for a steel plate with the thickness of 10mm, and the effects of inclination jet on heat flux and cooling rate of the plate surface were also analyzed, where the spray inclination angle was ranging from 0° to 60°. The results showed that the spray inclination angle can affect the heat transfer type of plate surface and heat flux distribution by changing plate surface stagnation zone and transverse flow zone’s area, water flow density, flow state and flow velocity, so that it will further influence the cooling rate of ultra fast cooling greatly. The average cooling rate and heat flux density reach the maximum values with 146.5℃/s and 2.75MW/m2, when the spray inclination angle is 30°.

Key words: ultra fast cooling, spray cooling, spray inclination angle, heat flux density, cooling rate

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