Modern steel making and hot rolling processes like CSP® thin slab technology require precise data on casting and rolling behavior of the produced steel grades. Up today only few data is available for the latest generations of advanced high strength steel (AHSS) grades. AHSS have developed by 3 generations [1, 2]. 1st Generation AHSS as dual phase (DP), complex phase (CP), martensitic (MS) and transformation induced plasticity (TRIP) steel grades are currently applied in automotive industry. 2nd and 3rd Generation AHSS typically have elevated Mn-content as well as Al and Si content. High Mn-content of up to 30% seriously affects casting and forming properties of 2nd Generation AHSS. In particular, the large solidification range of more than 100 K prevents commercial production of these steel grades by continuous casting [3]. 3rd Generation AHSS with reduced Mn-content up to about 12% are currently under development [1-4]. Investigations have been carried out to assess the CSP® thin slab process for the production of such grades. To this purpose solidification and hot forming properties of different alloys having Mn-content up to 10% have been examined by thermodynamic calculations and laboratory testing by hot forming dilatometry. The achieved flow curves match figures achieved on a hot rolling mill.
Global warming is one of the major concerns of the modernera. It is caused bythe surplus presence ofgases like CO2, CH4, NOx, and SF6, which can entrap the sun’s warmth within our atmosphere leading to the greenhouse effect. Past surveys showthat the atmospheric CO2levels, which has been on a steady rise due to burning of fossil fuels as well as incomplete combustion in IC engines, is the key factor to the climate change problem the world is facing right now. One of the ways to reduce thisCO2crisis is to capture carbon emissions at the source itself. This paper deals with a process to reduce CO2 levels by employing a combination of zeolite, activated carbon and monoethanolamine (MEA) with the help of Aluminium fine wire mesh. The properties of zeolite 5A have been adapted in capturing the CO2 due to their high micro porous structure and MEA due to its high CO2 absorbing characteristics. A slurry is prepared and the aluminium wire mesh is dipped in it, dried and is later kept in the exhaust pipe for the results. A comparison of the carbon emission with and without mesh is tabulated and presented with discussions.
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