本文選題：超快速冷卻 + 汽霧冷卻��； 參考：《東北大學(xué)學(xué)報(自然科學(xué)版)》2017年10期

【摘要】：采用汽霧射流冷卻方式,在射流角為0°~60°時,研究了10 mm厚不銹鋼板軋后超快速冷卻過程中表面射流流動結(jié)構(gòu)、換熱區(qū)分布和鋼板溫降規(guī)律,分析了傾斜射流對鋼板表面熱流密度和冷速的影響.結(jié)果表明:射流角通過改變鋼板表面滯止區(qū)和橫向流區(qū)面積、水流密度、介質(zhì)流動形態(tài)和流動速度,影響鋼板表面換熱形式和熱流密度分布,進而影響超快速冷卻冷速;射流角為30°時鋼板平均冷速和臨界熱流密度均達到最大值,分別為146.5℃/s和2.75 MW/m~2.
[Abstract]:In this paper, the surface jet flow structure, heat transfer zone distribution and temperature drop of 10 mm thick stainless steel plate during ultra-fast cooling process were studied when the jet angle was 0 擄~ 60 擄. The effect of inclined jet on heat flux and cooling rate on steel plate surface is analyzed. The results show that the jet angle affects the heat transfer and heat flux distribution of the steel plate surface by changing the area of the lag zone and the transverse flow zone, the density of the water flow, the shape of the medium flow and the velocity of the flow on the surface of the steel plate, and then affects the cooling rate of ultra-fast cooling. When the jet angle is 30 擄, the average cooling rate and critical heat flux of the steel plate reach the maximum value, which are 146.5 鈩，

本文編號：1817366