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What is Niyama Criterion in Cast Iron Porosity about?

This document discusses the applicability of the Niyama criterion for predicting porosity in cast iron castings. Specifically, it examines issues with using the classic definition-based approach of the Niyama criterion given that cast iron solidification involves the expanding phenomenon of graphite crystallization, which can compensate for shrinkage. It also discusses using differential thermal analysis systems with custom databases to better understand the metallurgical quality of cast iron and its stabil

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friend

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EN