Ductile Iron Cast Gearbox Cover development history

- Jan 16, 2021-

In 1981 , Chinese nodular iron experts used modern scientific methods to study 513 pieces of ancient Han and Wei ironware unearthed , and through a large amount of data, it was concluded that nodular graphite cast iron appeared in China in the Han Dynasty. Relevant papers were read out at the 18th World Conference on the History of Science and Technology, which caused a sensation in the international casting community and the history of science and technology. After verifying this in 1987 , international experts in metallurgical history believed that this is of great significance to the re-division of world metallurgical history.