用超声波速度试验测定ggg40球墨铸铁的球化度的方法学

Douglas Agnoletto, G. Lemos, A. B. Beskow, C. R. D. L. Lessa, A. Reguly
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引用次数: 0

摘要

铸铁合金结合了许多元素,如碳、铁、硅、镁,通常可以根据它们的微观结构分为延展性、灰色、致密、白色和可锻性。每一种都有其特性和应用。因此,本研究旨在评估球墨铸铁合金ggg40的球化程度(%)。在此背景下,提出了一种研究球化程度的方法。超声波法用于确定韧性石墨的量以及零件的释放,从而促进了工业操作的执行。研究了超声波对67种球墨铸铁的影响,并将这些分析结果与金相观察到的球化程度进行了比较。最后,基于这些发现,铸铁的质量得到了保证,从而节省了时间,避免了显微组织检查,从而促进了成本的降低。
本文章由计算机程序翻译,如有差异,请以英文原文为准。
METHODOLOGY FOR DETERMINATION OF DEGREE OF NODULARITY IN A DUCTILE CAST IRON GGG 40 BY ULTRASONIC VELOCITY TEST
Cast iron alloys combine many elements such as carbon, iron, silicon, magnesium and can be usually classified according to their microstructure in ductile, gray, compacted, white, and malleable. Each one has particularities in terms of properties and applications. Hence, this study aims to evaluate the degree of nodularity (%) in a ductile cast iron alloy GGG 40. In this context, a methodology to investigate the degree of nodularity was proposed. The ultrasonic method was used to determine the amount of ductile graphite as well as for parts release and thus facilitated the industrial operational execution. The effect of ultrasonic sound was investigated in sixty-seven ductile cast irons, and these analyses were further compared to the level of nodularity observed by metallography. Finally, based on the findings, the cast iron quality was guaranteed, leading to time savings, avoiding the microstructural examination, and thus promoting cost reductions.
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