In ductile iron, silicon strengthens the ferrite

The selection of medium and heavy plate rolling mills is a very important task, and many mistakes in the selection of medium and heavy plate rolling mills have occurred in the past. When the Oita Plant in Japan built a new thick plate rolling mill in 1976, the original design plan selected a 3800mm double-stand rolling mill, and a lot of preliminary work had been done. Later, it was resolutely changed to a 5500mm single-stand rolling mill, which delayed the construction period by nearly 3 years.