不同碱度精炼渣系对弹簧钢夹杂物的影响

哈贝马斯对《启蒙辩证法》的否定性解读,使得该著中的拯救逻辑遭到歪曲。由哈贝马斯的解读所延伸出的对《启蒙辩证法》拯救逻辑的美学化和精神分析化的重构与阿多尔诺的哲学思想相矛盾,由此我们必须重新反思哈贝马斯的解读模式。《启蒙辩证法》并非仅仅局限于工具理性批判,它通过有规定的否定达到了对现代启蒙当中现实权力因素的内在批判,它因此并没有彻底否定启蒙也没有重新树立新的乌托邦。对自然的回忆的拯救逻辑意味着思想必须对自身展开批判,以达到重新正视社会现实中的苦难现象,从而解构抽象主体的优先地位。

Effect of refining slag system with different basicities on the inclusion in spring steel

The existence of non-deformable inclusions with large size is one of the major factors that cause the fatigue failure of spring steel. To optimize the composition, morphology and distribution of inclusions in high grade spring steel 55SiCr,two LF refining processes were carried out when two kinds of refining slag system with different basicities were designed and employed in steel making process. Total oxygen content, the size and composition of inclusions in spring steel were analyzed with oxygen-nitrogen analyzer and EPMA. It is concluded that refining slag with lower basicity makes the composition of inclusions in spring steel approaching to the plastifying zone with low melting points in ternary system of Al₂O₃-SiO₂-CaO, but is unfavourable for the removal and control of inclusions with larger size. The slag with higher basicity contributes to the formation of inclusions with smaller and even size, but increases Al₂O_3content in inclusions. Refining slag with higher basicity is beneficial for deeply-deoxidation to achieve high purity steel, at the same time, reoxidation of molten steel during continuous casting process should be prevented.