板坯定宽过程狗骨分布的有限元分析

利用有限元方法建立了板坯定宽的有限元模型 ,系统研究了板坯定宽过程中金属的流动规律 ,并模拟了板坯狗骨形成过程。得到狗骨的分布规律 ,对研究板坯定宽有重要指导意义。     

Ozone Gas Scrubbing for Air-Operated Ozone Generation Systems

In laboratory testing as well as in tests using a semi-technical plant it was found that removal of the gaseous N₂O₅ as a by-product of ozone generation from air can be realized from a chemical point of view by gas scrubbing using treated drinking water, and forming nitric acid. At the same time this measure accomplishes a reduction of the trichloronitromethane (TCNM = chloropicrin) concentration in the treated water from Lake Constance by 30%. Surprisingly it was also found that the material used herein (stainless steel DIN 1.4571) will be attacked under conditions such as these.