Influence of FeSi in Double-chamber Sample Cup on Thermal Analysis Characteristic Values and Vermiculating Rate
Author of the article:JIANG Ailong;LIU Zeyu;LIU Qingyi;LI Nana;XU Zhenyu;SHI Dequan
Author's Workplace：Weichai Power Co.,Ltd.,Weifang 261061,China;School of Materials Science&Chemical Engineering,Harbin University of Science&Technology,Harbin 150040,China
Key Words：vermiculating graphite cast iron FeSi additive characteristic values for thermal analysis vermiculating rate double-chamber sample cup
Abstract：Silicon is an important element affecting the solidification of vermicular graphite cast iron.FeSi was added into a single chamber of a two-chamber sample cup to study the influence of different FeSi content on the characteristic value and vermicular rate of molten iron during thermal analysis.The results show that with the increase of FeSi additive,the initial austenite formation temperature TAL firstly decreases and then increases,while and TSEF,TEU,TEM and TER all increase,while TES has little change with the increase of FeSi additive.The effect of FeSi additive on the vermicular rate of molten iron at different pre-vermicular levels is different.The vermicular rate of molten iron at low vermicular level increases with the addition of FeSi,while the vermicular rate of molten iron at high vermicular level decreases with the addition of FeSi.With the increase of vermicular rate,corresponding to the time difference of the maximum temperature TER of two-compartment molten iron eutectic increases first and then decreases,the relationship between the two is similar to a parabola.
