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2.Si-Ca加到炉内时,铁水过热温度及其停留时间对蠕铁组织和机械性能的影响。为了同前述的三种Si-Ca加入方式的实验结果具有可比性,处理时的原铁水成份及主要工艺参数等,力求做到一致。 Si-Ca加入方法为:在熔化末期(此时
2.Si-Ca added to the furnace, the hot metal overheating temperature and residence time on the performance of vermicular ferrite and mechanical properties. In order to be comparable with the experimental results of the above-mentioned three kinds of Si-Ca addition methods, the original hot metal composition and the main process parameters during the process are sought to be consistent. Si-Ca is added as follows: at the end of melting (at this time