The use of thermal analysis as a tool for the real-time chemistry control of carbon and silicon in ductile base iron is very important for seamless melt productivity by avoiding delays in waiting for laboratory analyses of those elements by the direct but time-consuming methods via spectrometer or combustion. With the standard market availability of four (4) different thermal analysis cup types encompassing the two binary choices of ‘round versus square’ and ‘plain versus tellurium’ in amounting to the four choices, thorough comparative testing of each cup type was conducted for gage repeatability and reproducibility (GR & R) analyses and other correlativity analyses. Major results of this testing and data analysis are presented herein along with discussion and conclusions regarding the relative merits of each of the four available cup types. Based on comparative GR&R analyses and subsequent regression analysis of the data, it is concluded that, among the four (4) thermal analysis cup types to choose from for real-time control of the carbon equivalent, carbon and silicon contents of ductile base iron, the ‘RD–PL’ (round and plain) and ‘SQ–TE’ (square and tellurium) cups perform superiorly to the ‘RD–TE’ (round and tellurium) and ‘SQ–PL’ (square and plain) cups.

使用热分析作为可塑性化学成分实时控制碳和硅的工具，对于无缝熔体生产率而言非常重要，因为它避免了通过直接但费时的方法通过等待这些元素进行实验室分析而造成的等待时间。光谱仪或燃烧。凭借四（4）种不同的热分析杯类型的标准市场可用性，涵盖了“圆形对正方形”和“普通对碲”两个二元选择（共计四个选择），对每种类型的量杯进行了全面的对比测试重复性和再现性（GR＆R）分析以及其他相关性分析。本文介绍了该测试和数据分析的主要结果，以及有关四种可用杯子类型中每种类型的相对优点的讨论和结论。