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真空精炼轴承钢锭红热送工艺试验 被引量:1
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作者 陈汉辉 陆奇峰 +1 位作者 邱金林 毛羽 《特殊钢》 北大核心 1992年第6期15-17,共3页
本文通过对钢包真空精炼(LF)轴承钢锭红热送工艺调整和生产试验发现,真空精炼轴承钢锭以传搁时间180分钟作为红钢与热钢的分界,分别直接装入热均热坑内烧钢、轧后钢坯表面裂纹量不受影响、可以取消以往工艺中规定传搁时间禁区(165~240... 本文通过对钢包真空精炼(LF)轴承钢锭红热送工艺调整和生产试验发现,真空精炼轴承钢锭以传搁时间180分钟作为红钢与热钢的分界,分别直接装入热均热坑内烧钢、轧后钢坯表面裂纹量不受影响、可以取消以往工艺中规定传搁时间禁区(165~240分钟)内不得直接装坑的限制。 展开更多
关键词 轴承钢 真空精炼 红热送 钢锭
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Coupled Transfer of Water and Heat in Red Soil: Experiment and Numerical Modelling 被引量:4
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作者 HANXIAOFEI LUJUN 《Pedosphere》 SCIE CAS CSCD 2001年第2期123-130,共8页
Coupled transfer of soil water and heat in closed columns of homogeneous red soil was studied under laboratory conditions. A coupled model was constructed using soil physical theory, empirical equations and experiment... Coupled transfer of soil water and heat in closed columns of homogeneous red soil was studied under laboratory conditions. A coupled model was constructed using soil physical theory, empirical equations and experimental data to predict the coupled transfer. The results show that transport of soil water was affected by temperature gradient, and the largest net water transport was found in the soil column with initial water content of 0.148 m3 m-3. At the same time, temperature changes with the transport of soil water was in a nonlinear shape as heat parameters were function of water content, and the changes of temperature were positively correlated with the net amount of water transported. Numerical modelling results show that the predicted values of temperature distribution were close to the observed values, while the predicted values of water content exhibited limited deviation at both ends of the soil column due to the slight temperature changes at both ends. It was indicated that the model proposed here was applicable. 展开更多
关键词 coupled transfer of water and heat numerical modelling red soil
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