40Cr大方坯凝固传热行为研究

国家的现代化取决于民族的现代化,而民族的现代化在于民族自我的形成。日本现代自我正是在各种现代思想聚合、发酵之下产生的,它表现为日本人共同分享的一体感以及对共同命运、价值的广泛认同。其中,马克思主义哲学的输入也构成了重要的作用因,它为之注入了阶级的共同体意识、劳动价值论和历史主义立场等元素。本文通过对日本马克思主义哲学关于国体与国民观、世界中的日本以及知识分子地位等问题的分析,阐述日本现代自我是如何接受马克思主义哲学影响的。

Solidification and heat transfer behaviors of 40Cr steel bloom

In light of continuous casting technological conditions for producing 40Cr steel bloom, two-dimensional unsteady heat transfer model had been established, and this model had been corrected by the pin-shooting experimental data. The results show that the regenerative rate on bloom surface in the first and second partition of secondary cooling zone is higher under the actual water distribution. The bloom shell at the outlet of mould is thicker, and the intensity of cooling for the mould can be further reduced. The temperature gradients in the bloom are reduced gradually with distance from the center of bloom surface, and the temperature gradients in the central areas of bloom vary little. The temperature gradient at the same distance from bloom surface decreases first and then increases gradually with distance from the meniscus area. With the increase of cooling intensity, the temperature gradients in columnar-to-equiaxed transition of bloom increase. The increase of temperature gradients is not obvious by only increasing the cooling intensity in the fifth partition of secondary cooling zone.