Development history of ductile iron in China

- Oct 28, 2019-

In 1981, Chinese ductile iron experts used modern scientific methods to study the 513 pieces of ancient Han and Wei irons unearthed. Through a large amount of data, it was determined that spheroidal graphite cast iron appeared in the Han Dynasty. The relevant papers were read at the 18th World Congress of Science and Technology History, which sensationalized the international foundry industry and the history of science and technology. After verifying this in 1987, the international metallurgical history experts believed that this is of great significance for the re-segmentation of the world metallurgical history.